index.esm.js.map

{"version":3,"file":"index.esm.js","sources":["../lib/schemas/config.js","../lib/envs.js","../lib/logger.js","../lib/utils.js","../lib/config.js","../lib/fetch.js","../lib/errors/ExportError.js","../lib/cache.js","../lib/highcharts.js","../lib/browser.js","../lib/export.js","../templates/svg_export/svg_export.js","../lib/pool.js","../lib/chart.js","../lib/sanitize.js","../lib/intervals.js","../lib/server/error.js","../lib/server/rate_limit.js","../lib/errors/HttpError.js","../lib/server/routes/change_hc_version.js","../lib/server/routes/export.js","../lib/server/routes/health.js","../lib/server/server.js","../lib/server/routes/ui.js","../lib/resource_release.js","../lib/index.js"],"sourcesContent":["/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\n// Possible names for Highcharts scripts\nexport const scriptsNames = {\n  core: ['highcharts', 'highcharts-more', 'highcharts-3d'],\n  modules: [\n    'stock',\n    'map',\n    'gantt',\n    'exporting',\n    'parallel-coordinates',\n    'accessibility',\n    // 'annotations-advanced',\n    'boost-canvas',\n    'boost',\n    'data',\n    'data-tools',\n    'draggable-points',\n    'static-scale',\n    'broken-axis',\n    'heatmap',\n    'tilemap',\n    'tiledwebmap',\n    'timeline',\n    'treemap',\n    'treegraph',\n    'item-series',\n    'drilldown',\n    'histogram-bellcurve',\n    'bullet',\n    'funnel',\n    'funnel3d',\n    'geoheatmap',\n    'pyramid3d',\n    'networkgraph',\n    'overlapping-datalabels',\n    'pareto',\n    'pattern-fill',\n    'pictorial',\n    'price-indicator',\n    'sankey',\n    'arc-diagram',\n    'dependency-wheel',\n    'series-label',\n    'series-on-point',\n    'solid-gauge',\n    'sonification',\n    // 'stock-tools',\n    'streamgraph',\n    'sunburst',\n    'variable-pie',\n    'variwide',\n    'vector',\n    'venn',\n    'windbarb',\n    'wordcloud',\n    'xrange',\n    'no-data-to-display',\n    'drag-panes',\n    'debugger',\n    'dumbbell',\n    'lollipop',\n    'cylinder',\n    'organization',\n    'dotplot',\n    'marker-clusters',\n    'hollowcandlestick',\n    'heikinashi',\n    'flowmap',\n    'export-data',\n    'navigator',\n    'textpath'\n  ],\n  indicators: ['indicators-all'],\n  custom: [\n    'https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.30.1/moment.min.js',\n    'https://cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.45/moment-timezone-with-data.min.js'\n  ]\n};\n\n// This is the configuration object with all options and their default values,\n// also from the .env file if one exists\nexport const defaultConfig = {\n  puppeteer: {\n    args: {\n      value: [\n        '--allow-running-insecure-content',\n        '--ash-no-nudges',\n        '--autoplay-policy=user-gesture-required',\n        '--block-new-web-contents',\n        '--disable-accelerated-2d-canvas',\n        '--disable-background-networking',\n        '--disable-background-timer-throttling',\n        '--disable-backgrounding-occluded-windows',\n        '--disable-breakpad',\n        '--disable-checker-imaging',\n        '--disable-client-side-phishing-detection',\n        '--disable-component-extensions-with-background-pages',\n        '--disable-component-update',\n        '--disable-default-apps',\n        '--disable-dev-shm-usage',\n        '--disable-domain-reliability',\n        '--disable-extensions',\n        '--disable-features=CalculateNativeWinOcclusion,InterestFeedContentSuggestions,WebOTP',\n        '--disable-hang-monitor',\n        '--disable-ipc-flooding-protection',\n        '--disable-logging',\n        '--disable-notifications',\n        '--disable-offer-store-unmasked-wallet-cards',\n        '--disable-popup-blocking',\n        '--disable-print-preview',\n        '--disable-prompt-on-repost',\n        '--disable-renderer-backgrounding',\n        '--disable-search-engine-choice-screen',\n        '--disable-session-crashed-bubble',\n        '--disable-setuid-sandbox',\n        '--disable-site-isolation-trials',\n        '--disable-speech-api',\n        '--disable-sync',\n        '--enable-unsafe-webgpu',\n        '--hide-crash-restore-bubble',\n        '--hide-scrollbars',\n        '--metrics-recording-only',\n        '--mute-audio',\n        '--no-default-browser-check',\n        '--no-first-run',\n        '--no-pings',\n        '--no-sandbox',\n        '--no-startup-window',\n        '--no-zygote',\n        '--password-store=basic',\n        '--process-per-tab',\n        '--use-mock-keychain'\n      ],\n      type: 'string[]',\n      description: 'Arguments array to send to Puppeteer.'\n    }\n  },\n  highcharts: {\n    version: {\n      value: 'latest',\n      type: 'string',\n      envLink: 'HIGHCHARTS_VERSION',\n      description: 'The Highcharts version to be used.'\n    },\n    cdnURL: {\n      value: 'https://code.highcharts.com/',\n      type: 'string',\n      envLink: 'HIGHCHARTS_CDN_URL',\n      description: 'The CDN URL for Highcharts scripts to be used.'\n    },\n    coreScripts: {\n      value: scriptsNames.core,\n      type: 'string[]',\n      envLink: 'HIGHCHARTS_CORE_SCRIPTS',\n      description: 'The core Highcharts scripts to fetch.'\n    },\n    moduleScripts: {\n      value: scriptsNames.modules,\n      type: 'string[]',\n      envLink: 'HIGHCHARTS_MODULE_SCRIPTS',\n      description: 'The modules of Highcharts to fetch.'\n    },\n    indicatorScripts: {\n      value: scriptsNames.indicators,\n      type: 'string[]',\n      envLink: 'HIGHCHARTS_INDICATOR_SCRIPTS',\n      description: 'The indicators of Highcharts to fetch.'\n    },\n    customScripts: {\n      value: scriptsNames.custom,\n      type: 'string[]',\n      description: 'Additional custom scripts or dependencies to fetch.'\n    },\n    forceFetch: {\n      value: false,\n      type: 'boolean',\n      envLink: 'HIGHCHARTS_FORCE_FETCH',\n      description:\n        'The flag to determine whether to refetch all scripts after each server rerun.'\n    },\n    cachePath: {\n      value: '.cache',\n      type: 'string',\n      envLink: 'HIGHCHARTS_CACHE_PATH',\n      description:\n        'The path to the cache directory. It is used to store the Highcharts scripts and custom scripts.'\n    }\n  },\n  export: {\n    infile: {\n      value: false,\n      type: 'string',\n      description:\n        'The input file should include a name and a type (json or svg). It must be correctly formatted as a JSON or SVG file.'\n    },\n    instr: {\n      value: false,\n      type: 'string',\n      description:\n        'Input, provided in the form of a stringified JSON or SVG file, will override the --infile option.'\n    },\n    options: {\n      value: false,\n      type: 'string',\n      description: 'An alias for the --instr option.'\n    },\n    outfile: {\n      value: false,\n      type: 'string',\n      description:\n        'The output filename along with a type (jpeg, png, pdf, or svg). This will ignore the --type flag.'\n    },\n    type: {\n      value: 'png',\n      type: 'string',\n      envLink: 'EXPORT_TYPE',\n      description: 'The file export format. It can be jpeg, png, pdf, or svg.'\n    },\n    constr: {\n      value: 'chart',\n      type: 'string',\n      envLink: 'EXPORT_CONSTR',\n      description:\n        'The constructor to use. Can be chart, stockChart, mapChart, or ganttChart.'\n    },\n    defaultHeight: {\n      value: 400,\n      type: 'number',\n      envLink: 'EXPORT_DEFAULT_HEIGHT',\n      description:\n        'the default height of the exported chart. Used when no value is set.'\n    },\n    defaultWidth: {\n      value: 600,\n      type: 'number',\n      envLink: 'EXPORT_DEFAULT_WIDTH',\n      description:\n        'The default width of the exported chart. Used when no value is set.'\n    },\n    defaultScale: {\n      value: 1,\n      type: 'number',\n      envLink: 'EXPORT_DEFAULT_SCALE',\n      description:\n        'The default scale of the exported chart. Used when no value is set.'\n    },\n    height: {\n      value: false,\n      type: 'number',\n      description:\n        'The height of the exported chart, overriding the option in the chart settings.'\n    },\n    width: {\n      value: false,\n      type: 'number',\n      description:\n        'The width of the exported chart, overriding the option in the chart settings.'\n    },\n    scale: {\n      value: false,\n      type: 'number',\n      description:\n        'The scale of the exported chart, overriding the option in the chart settings. Ranges between 0.1 and 5.0.'\n    },\n    globalOptions: {\n      value: false,\n      type: 'string',\n      description:\n        'Either a stringified JSON or a filename containing options to be passed into the Highcharts.setOptions.'\n    },\n    themeOptions: {\n      value: false,\n      type: 'string',\n      description:\n        'Either a stringified JSON or a filename containing theme options to be passed into the Highcharts.setOptions.'\n    },\n    batch: {\n      value: false,\n      type: 'string',\n      description:\n        'Initiates a batch job with a string containing input/output pairs: \"in=out;in=out;...\".'\n    },\n    rasterizationTimeout: {\n      value: 1500,\n      type: 'number',\n      envLink: 'EXPORT_RASTERIZATION_TIMEOUT',\n      description:\n        'The duration in milliseconds to wait for rendering a webpage.'\n    }\n  },\n  customLogic: {\n    allowCodeExecution: {\n      value: false,\n      type: 'boolean',\n      envLink: 'CUSTOM_LOGIC_ALLOW_CODE_EXECUTION',\n      description:\n        'Controls whether the execution of arbitrary code is allowed during the exporting process.'\n    },\n    allowFileResources: {\n      value: false,\n      type: 'boolean',\n      envLink: 'CUSTOM_LOGIC_ALLOW_FILE_RESOURCES',\n      description:\n        'Controls the ability to inject resources from the filesystem. This setting has no effect when running as a server.'\n    },\n    customCode: {\n      value: false,\n      type: 'string',\n      description:\n        'Custom code to execute before chart initialization. It can be a function, code wrapped within a function, or a filename with the .js extension.'\n    },\n    callback: {\n      value: false,\n      type: 'string',\n      description:\n        'JavaScript code to run during construction. It can be a function or a filename with the .js extension.'\n    },\n    resources: {\n      value: false,\n      type: 'string',\n      description:\n        'Additional resource in the form of a stringified JSON, which may contain files, js, and css sections.'\n    },\n    loadConfig: {\n      value: false,\n      type: 'string',\n      legacyName: 'fromFile',\n      description: 'A file containing a pre-defined configuration to use.'\n    },\n    createConfig: {\n      value: false,\n      type: 'string',\n      description:\n        'Enables setting options through a prompt and saving them in a provided config file.'\n    }\n  },\n  server: {\n    maxUploadSize: {\n      value: 3,\n      type: 'number',\n      cliName: 'maxUploadSize',\n      envLink: 'SERVER_MAX_UPLOAD_SIZE',\n      description:\n        'The maximum upload size, in megabytes, for the server'\n      \n    },\n    enable: {\n      value: false,\n      type: 'boolean',\n      envLink: 'SERVER_ENABLE',\n      cliName: 'enableServer',\n      description:\n        'When set to true, the server starts on the local IP address 0.0.0.0.'\n    },\n    host: {\n      value: '0.0.0.0',\n      type: 'string',\n      envLink: 'SERVER_HOST',\n      description:\n        'The hostname of the server. Additionally, it starts a server on the provided hostname.'\n    },\n    port: {\n      value: 7801,\n      type: 'number',\n      envLink: 'SERVER_PORT',\n      description: 'The server port when enabled.'\n    },\n    benchmarking: {\n      value: false,\n      type: 'boolean',\n      envLink: 'SERVER_BENCHMARKING',\n      cliName: 'serverBenchmarking',\n      description:\n        'Indicates whether to display the duration, in milliseconds, of specific actions that occur on the server while serving a request.'\n    },\n    proxy: {\n      host: {\n        value: false,\n        type: 'string',\n        envLink: 'SERVER_PROXY_HOST',\n        cliName: 'proxyHost',\n        description: 'The host of the proxy server to use, if it exists.'\n      },\n      port: {\n        value: 8080,\n        type: 'number',\n        envLink: 'SERVER_PROXY_PORT',\n        cliName: 'proxyPort',\n        description: 'The port of the proxy server to use, if it exists.'\n      },\n      username: {\n        value: false,\n        type: 'string',\n        envLink: 'SERVER_PROXY_USERNAME',\n        cliName: 'proxyUsername',\n        description: 'The username for the proxy server, if it exists.'\n      },\n      password: {\n        value: false,\n        type: 'string',\n        envLink: 'SERVER_PROXY_PASSWORD',\n        cliName: 'proxyPassword',\n        description: 'The password for the proxy server, if it exists.'\n      },\n      timeout: {\n        value: 5000,\n        type: 'number',\n        envLink: 'SERVER_PROXY_TIMEOUT',\n        cliName: 'proxyTimeout',\n        description: 'The timeout for the proxy server to use, if it exists.'\n      }\n    },\n    rateLimiting: {\n      enable: {\n        value: false,\n        type: 'boolean',\n        envLink: 'SERVER_RATE_LIMITING_ENABLE',\n        cliName: 'enableRateLimiting',\n        description: 'Enables rate limiting for the server.'\n      },\n      maxRequests: {\n        value: 10,\n        type: 'number',\n        envLink: 'SERVER_RATE_LIMITING_MAX_REQUESTS',\n        legacyName: 'rateLimit',\n        description: 'The maximum number of requests allowed in one minute.'\n      },\n      window: {\n        value: 1,\n        type: 'number',\n        envLink: 'SERVER_RATE_LIMITING_WINDOW',\n        description: 'The time window, in minutes, for the rate limiting.'\n      },\n      delay: {\n        value: 0,\n        type: 'number',\n        envLink: 'SERVER_RATE_LIMITING_DELAY',\n        description:\n          'The delay duration for each successive request before reaching the maximum limit.'\n      },\n      trustProxy: {\n        value: false,\n        type: 'boolean',\n        envLink: 'SERVER_RATE_LIMITING_TRUST_PROXY',\n        description: 'Set this to true if the server is behind a load balancer.'\n      },\n      skipKey: {\n        value: false,\n        type: 'string',\n        envLink: 'SERVER_RATE_LIMITING_SKIP_KEY',\n        description:\n          'Allows bypassing the rate limiter and should be provided with the skipToken argument.'\n      },\n      skipToken: {\n        value: false,\n        type: 'string',\n        envLink: 'SERVER_RATE_LIMITING_SKIP_TOKEN',\n        description:\n          'Allows bypassing the rate limiter and should be provided with the skipKey argument.'\n      }\n    },\n    ssl: {\n      enable: {\n        value: false,\n        type: 'boolean',\n        envLink: 'SERVER_SSL_ENABLE',\n        cliName: 'enableSsl',\n        description: 'Enables or disables the SSL protocol.'\n      },\n      force: {\n        value: false,\n        type: 'boolean',\n        envLink: 'SERVER_SSL_FORCE',\n        cliName: 'sslForce',\n        legacyName: 'sslOnly',\n        description:\n          'When set to true, the server is forced to serve only over HTTPS.'\n      },\n      port: {\n        value: 443,\n        type: 'number',\n        envLink: 'SERVER_SSL_PORT',\n        cliName: 'sslPort',\n        description: 'The port on which to run the SSL server.'\n      },\n      certPath: {\n        value: false,\n        type: 'string',\n        envLink: 'SERVER_SSL_CERT_PATH',\n        legacyName: 'sslPath',\n        description: 'The path to the SSL certificate/key file.'\n      }\n    }\n  },\n  pool: {\n    minWorkers: {\n      value: 4,\n      type: 'number',\n      envLink: 'POOL_MIN_WORKERS',\n      description: 'The number of minimum and initial pool workers to spawn.'\n    },\n    maxWorkers: {\n      value: 8,\n      type: 'number',\n      envLink: 'POOL_MAX_WORKERS',\n      legacyName: 'workers',\n      description: 'The number of maximum pool workers to spawn.'\n    },\n    workLimit: {\n      value: 40,\n      type: 'number',\n      envLink: 'POOL_WORK_LIMIT',\n      description:\n        'The number of work pieces that can be performed before restarting the worker process.'\n    },\n    acquireTimeout: {\n      value: 5000,\n      type: 'number',\n      envLink: 'POOL_ACQUIRE_TIMEOUT',\n      description:\n        'The duration, in milliseconds, to wait for acquiring a resource.'\n    },\n    createTimeout: {\n      value: 5000,\n      type: 'number',\n      envLink: 'POOL_CREATE_TIMEOUT',\n      description:\n        'The duration, in milliseconds, to wait for creating a resource.'\n    },\n    destroyTimeout: {\n      value: 5000,\n      type: 'number',\n      envLink: 'POOL_DESTROY_TIMEOUT',\n      description:\n        'The duration, in milliseconds, to wait for destroying a resource.'\n    },\n    idleTimeout: {\n      value: 30000,\n      type: 'number',\n      envLink: 'POOL_IDLE_TIMEOUT',\n      description:\n        'The duration, in milliseconds, after which an idle resource is destroyed.'\n    },\n    createRetryInterval: {\n      value: 200,\n      type: 'number',\n      envLink: 'POOL_CREATE_RETRY_INTERVAL',\n      description:\n        'The duration, in milliseconds, to wait before retrying the create process in case of a failure.'\n    },\n    reaperInterval: {\n      value: 1000,\n      type: 'number',\n      envLink: 'POOL_REAPER_INTERVAL',\n      description:\n        'The duration, in milliseconds, after which the check for idle resources to destroy is triggered.'\n    },\n    benchmarking: {\n      value: false,\n      type: 'boolean',\n      envLink: 'POOL_BENCHMARKING',\n      cliName: 'poolBenchmarking',\n      description:\n        'Indicate whether to show statistics for the pool of resources or not.'\n    }\n  },\n  logging: {\n    level: {\n      value: 4,\n      type: 'number',\n      envLink: 'LOGGING_LEVEL',\n      cliName: 'logLevel',\n      description: 'The logging level to be used.'\n    },\n    file: {\n      value: 'highcharts-export-server.log',\n      type: 'string',\n      envLink: 'LOGGING_FILE',\n      cliName: 'logFile',\n      description:\n        'The name of a log file. The `logToFile` and `logDest` options also need to be set to enable file logging.'\n    },\n    dest: {\n      value: 'log/',\n      type: 'string',\n      envLink: 'LOGGING_DEST',\n      cliName: 'logDest',\n      description:\n        'The path to store log files. The `logToFile` option also needs to be set to enable file logging.'\n    },\n    toConsole: {\n      value: true,\n      type: 'boolean',\n      envLink: 'LOGGING_TO_CONSOLE',\n      cliName: 'logToConsole',\n      description: 'Enables or disables showing logs in the console.'\n    },\n    toFile: {\n      value: true,\n      type: 'boolean',\n      envLink: 'LOGGING_TO_FILE',\n      cliName: 'logToFile',\n      description:\n        'Enables or disables creation of the log directory and saving the log into a .log file.'\n    }\n  },\n  ui: {\n    enable: {\n      value: false,\n      type: 'boolean',\n      envLink: 'UI_ENABLE',\n      cliName: 'enableUi',\n      description:\n        'Enables or disables the user interface (UI) for the export server.'\n    },\n    route: {\n      value: '/',\n      type: 'string',\n      envLink: 'UI_ROUTE',\n      cliName: 'uiRoute',\n      description:\n        'The endpoint route to which the user interface (UI) should be attached.'\n    }\n  },\n  other: {\n    nodeEnv: {\n      value: 'production',\n      type: 'string',\n      envLink: 'OTHER_NODE_ENV',\n      description: 'The type of Node.js environment.'\n    },\n    listenToProcessExits: {\n      value: true,\n      type: 'boolean',\n      envLink: 'OTHER_LISTEN_TO_PROCESS_EXITS',\n      description: 'Decides whether or not to attach process.exit handlers.'\n    },\n    noLogo: {\n      value: false,\n      type: 'boolean',\n      envLink: 'OTHER_NO_LOGO',\n      description:\n        'Skip printing the logo on a startup. Will be replaced by a simple text.'\n    },\n    hardResetPage: {\n      value: false,\n      type: 'boolean',\n      envLink: 'OTHER_HARD_RESET_PAGE',\n      description: 'Decides if the page content should be reset entirely.'\n    },\n    browserShellMode: {\n      value: true,\n      type: 'boolean',\n      envLink: 'OTHER_BROWSER_SHELL_MODE',\n      description: 'Decides if the browser runs in the shell mode.'\n    }\n  },\n  debug: {\n    enable: {\n      value: false,\n      type: 'boolean',\n      envLink: 'DEBUG_ENABLE',\n      cliName: 'enableDebug',\n      description: 'Enables or disables debug mode for the underlying browser.'\n    },\n    headless: {\n      value: true,\n      type: 'boolean',\n      envLink: 'DEBUG_HEADLESS',\n      description:\n        'Controls the mode in which the browser is launched when in the debug mode.'\n    },\n    devtools: {\n      value: false,\n      type: 'boolean',\n      envLink: 'DEBUG_DEVTOOLS',\n      description:\n        'Decides whether to enable DevTools when the browser is in a headful state.'\n    },\n    listenToConsole: {\n      value: false,\n      type: 'boolean',\n      envLink: 'DEBUG_LISTEN_TO_CONSOLE',\n      description:\n        'Decides whether to enable a listener for console messages sent from the browser.'\n    },\n    dumpio: {\n      value: false,\n      type: 'boolean',\n      envLink: 'DEBUG_DUMPIO',\n      description:\n        'Redirects browser process stdout and stderr to process.stdout and process.stderr.'\n    },\n    slowMo: {\n      value: 0,\n      type: 'number',\n      envLink: 'DEBUG_SLOW_MO',\n      description:\n        'Slows down Puppeteer operations by the specified number of milliseconds.'\n    },\n    debuggingPort: {\n      value: 9222,\n      type: 'number',\n      envLink: 'DEBUG_DEBUGGING_PORT',\n      description: 'Specifies the debugging port.'\n    }\n  }\n};\n\n// The config descriptions object for the prompts functionality. It contains\n// information like:\n// * Type of a prompt\n// * Name of an option\n// * Short description of a chosen option\n// * Initial value\nexport const promptsConfig = {\n  puppeteer: [\n    {\n      type: 'list',\n      name: 'args',\n      message: 'Puppeteer arguments',\n      initial: defaultConfig.puppeteer.args.value.join(','),\n      separator: ','\n    }\n  ],\n  highcharts: [\n    {\n      type: 'text',\n      name: 'version',\n      message: 'Highcharts version',\n      initial: defaultConfig.highcharts.version.value\n    },\n    {\n      type: 'text',\n      name: 'cdnURL',\n      message: 'The URL of CDN',\n      initial: defaultConfig.highcharts.cdnURL.value\n    },\n    {\n      type: 'multiselect',\n      name: 'coreScripts',\n      message: 'Available core scripts',\n      instructions: 'Space: Select specific, A: Select all, Enter: Confirm.',\n      choices: defaultConfig.highcharts.coreScripts.value\n    },\n    {\n      type: 'multiselect',\n      name: 'moduleScripts',\n      message: 'Available module scripts',\n      instructions: 'Space: Select specific, A: Select all, Enter: Confirm.',\n      choices: defaultConfig.highcharts.moduleScripts.value\n    },\n    {\n      type: 'multiselect',\n      name: 'indicatorScripts',\n      message: 'Available indicator scripts',\n      instructions: 'Space: Select specific, A: Select all, Enter: Confirm.',\n      choices: defaultConfig.highcharts.indicatorScripts.value\n    },\n    {\n      type: 'list',\n      name: 'customScripts',\n      message: 'Custom scripts',\n      initial: defaultConfig.highcharts.customScripts.value.join(','),\n      separator: ','\n    },\n    {\n      type: 'toggle',\n      name: 'forceFetch',\n      message: 'Force re-fetch the scripts',\n      initial: defaultConfig.highcharts.forceFetch.value\n    },\n    {\n      type: 'text',\n      name: 'cachePath',\n      message: 'The path to the cache directory',\n      initial: defaultConfig.highcharts.cachePath.value\n    }\n  ],\n  export: [\n    {\n      type: 'select',\n      name: 'type',\n      message: 'The default export file type',\n      hint: `Default: ${defaultConfig.export.type.value}`,\n      initial: 0,\n      choices: ['png', 'jpeg', 'pdf', 'svg']\n    },\n    {\n      type: 'select',\n      name: 'constr',\n      message: 'The default constructor for Highcharts',\n      hint: `Default: ${defaultConfig.export.constr.value}`,\n      initial: 0,\n      choices: ['chart', 'stockChart', 'mapChart', 'ganttChart']\n    },\n    {\n      type: 'number',\n      name: 'defaultHeight',\n      message: 'The default fallback height of the exported chart',\n      initial: defaultConfig.export.defaultHeight.value\n    },\n    {\n      type: 'number',\n      name: 'defaultWidth',\n      message: 'The default fallback width of the exported chart',\n      initial: defaultConfig.export.defaultWidth.value\n    },\n    {\n      type: 'number',\n      name: 'defaultScale',\n      message: 'The default fallback scale of the exported chart',\n      initial: defaultConfig.export.defaultScale.value,\n      min: 0.1,\n      max: 5\n    },\n    {\n      type: 'number',\n      name: 'rasterizationTimeout',\n      message: 'The rendering webpage timeout in milliseconds',\n      initial: defaultConfig.export.rasterizationTimeout.value\n    }\n  ],\n  customLogic: [\n    {\n      type: 'toggle',\n      name: 'allowCodeExecution',\n      message: 'Enable execution of custom code',\n      initial: defaultConfig.customLogic.allowCodeExecution.value\n    },\n    {\n      type: 'toggle',\n      name: 'allowFileResources',\n      message: 'Enable file resources',\n      initial: defaultConfig.customLogic.allowFileResources.value\n    }\n  ],\n  server: [\n    {\n      type: 'toggle',\n      name: 'enable',\n      message: 'Starts the server on 0.0.0.0',\n      initial: defaultConfig.server.enable.value\n    },\n    {\n      type: 'text',\n      name: 'host',\n      message: 'Server hostname',\n      initial: defaultConfig.server.host.value\n    },\n    {\n      type: 'number',\n      name: 'port',\n      message: 'Server port',\n      initial: defaultConfig.server.port.value\n    },\n    {\n      type: 'toggle',\n      name: 'benchmarking',\n      message: 'Enable server benchmarking',\n      initial: defaultConfig.server.benchmarking.value\n    },\n    {\n      type: 'text',\n      name: 'proxy.host',\n      message: 'The host of the proxy server to use',\n      initial: defaultConfig.server.proxy.host.value\n    },\n    {\n      type: 'number',\n      name: 'proxy.port',\n      message: 'The port of the proxy server to use',\n      initial: defaultConfig.server.proxy.port.value\n    },\n    {\n      type: 'number',\n      name: 'proxy.timeout',\n      message: 'The timeout for the proxy server to use',\n      initial: defaultConfig.server.proxy.timeout.value\n    },\n    {\n      type: 'toggle',\n      name: 'rateLimiting.enable',\n      message: 'Enable rate limiting',\n      initial: defaultConfig.server.rateLimiting.enable.value\n    },\n    {\n      type: 'number',\n      name: 'rateLimiting.maxRequests',\n      message: 'The maximum requests allowed per minute',\n      initial: defaultConfig.server.rateLimiting.maxRequests.value\n    },\n    {\n      type: 'number',\n      name: 'rateLimiting.window',\n      message: 'The rate-limiting time window in minutes',\n      initial: defaultConfig.server.rateLimiting.window.value\n    },\n    {\n      type: 'number',\n      name: 'rateLimiting.delay',\n      message:\n        'The delay for each successive request before reaching the maximum',\n      initial: defaultConfig.server.rateLimiting.delay.value\n    },\n    {\n      type: 'toggle',\n      name: 'rateLimiting.trustProxy',\n      message: 'Set to true if behind a load balancer',\n      initial: defaultConfig.server.rateLimiting.trustProxy.value\n    },\n    {\n      type: 'text',\n      name: 'rateLimiting.skipKey',\n      message:\n        'Allows bypassing the rate limiter when provided with the skipToken argument',\n      initial: defaultConfig.server.rateLimiting.skipKey.value\n    },\n    {\n      type: 'text',\n      name: 'rateLimiting.skipToken',\n      message:\n        'Allows bypassing the rate limiter when provided with the skipKey argument',\n      initial: defaultConfig.server.rateLimiting.skipToken.value\n    },\n    {\n      type: 'toggle',\n      name: 'ssl.enable',\n      message: 'Enable SSL protocol',\n      initial: defaultConfig.server.ssl.enable.value\n    },\n    {\n      type: 'toggle',\n      name: 'ssl.force',\n      message: 'Force serving only over HTTPS',\n      initial: defaultConfig.server.ssl.force.value\n    },\n    {\n      type: 'number',\n      name: 'ssl.port',\n      message: 'SSL server port',\n      initial: defaultConfig.server.ssl.port.value\n    },\n    {\n      type: 'text',\n      name: 'ssl.certPath',\n      message: 'The path to find the SSL certificate/key',\n      initial: defaultConfig.server.ssl.certPath.value\n    }\n  ],\n  pool: [\n    {\n      type: 'number',\n      name: 'minWorkers',\n      message: 'The initial number of workers to spawn',\n      initial: defaultConfig.pool.minWorkers.value\n    },\n    {\n      type: 'number',\n      name: 'maxWorkers',\n      message: 'The maximum number of workers to spawn',\n      initial: defaultConfig.pool.maxWorkers.value\n    },\n    {\n      type: 'number',\n      name: 'workLimit',\n      message:\n        'The pieces of work that can be performed before restarting a Puppeteer process',\n      initial: defaultConfig.pool.workLimit.value\n    },\n    {\n      type: 'number',\n      name: 'acquireTimeout',\n      message: 'The number of milliseconds to wait for acquiring a resource',\n      initial: defaultConfig.pool.acquireTimeout.value\n    },\n    {\n      type: 'number',\n      name: 'createTimeout',\n      message: 'The number of milliseconds to wait for creating a resource',\n      initial: defaultConfig.pool.createTimeout.value\n    },\n    {\n      type: 'number',\n      name: 'destroyTimeout',\n      message: 'The number of milliseconds to wait for destroying a resource',\n      initial: defaultConfig.pool.destroyTimeout.value\n    },\n    {\n      type: 'number',\n      name: 'idleTimeout',\n      message: 'The number of milliseconds after an idle resource is destroyed',\n      initial: defaultConfig.pool.idleTimeout.value\n    },\n    {\n      type: 'number',\n      name: 'createRetryInterval',\n      message:\n        'The retry interval in milliseconds after a create process fails',\n      initial: defaultConfig.pool.createRetryInterval.value\n    },\n    {\n      type: 'number',\n      name: 'reaperInterval',\n      message:\n        'The reaper interval in milliseconds after triggering the check for idle resources to destroy',\n      initial: defaultConfig.pool.reaperInterval.value\n    },\n    {\n      type: 'toggle',\n      name: 'benchmarking',\n      message: 'Enable benchmarking for a resource pool',\n      initial: defaultConfig.pool.benchmarking.value\n    }\n  ],\n  logging: [\n    {\n      type: 'number',\n      name: 'level',\n      message:\n        'The log level (0: silent, 1: error, 2: warning, 3: notice, 4: verbose, 5: benchmark)',\n      initial: defaultConfig.logging.level.value,\n      round: 0,\n      min: 0,\n      max: 5\n    },\n    {\n      type: 'text',\n      name: 'file',\n      message:\n        'A log file name. Set with --toFile and --logDest to enable file logging',\n      initial: defaultConfig.logging.file.value\n    },\n    {\n      type: 'text',\n      name: 'dest',\n      message: 'The path to a log file when the file logging is enabled',\n      initial: defaultConfig.logging.dest.value\n    },\n    {\n      type: 'toggle',\n      name: 'toConsole',\n      message: 'Enable logging to the console',\n      initial: defaultConfig.logging.toConsole.value\n    },\n    {\n      type: 'toggle',\n      name: 'toFile',\n      message: 'Enables logging to a file',\n      initial: defaultConfig.logging.toFile.value\n    }\n  ],\n  ui: [\n    {\n      type: 'toggle',\n      name: 'enable',\n      message: 'Enable UI for the export server',\n      initial: defaultConfig.ui.enable.value\n    },\n    {\n      type: 'text',\n      name: 'route',\n      message: 'A route to attach the UI',\n      initial: defaultConfig.ui.route.value\n    }\n  ],\n  other: [\n    {\n      type: 'text',\n      name: 'nodeEnv',\n      message: 'The type of Node.js environment',\n      initial: defaultConfig.other.nodeEnv.value\n    },\n    {\n      type: 'toggle',\n      name: 'listenToProcessExits',\n      message: 'Set to false to skip attaching process.exit handlers',\n      initial: defaultConfig.other.listenToProcessExits.value\n    },\n    {\n      type: 'toggle',\n      name: 'noLogo',\n      message: 'Skip printing the logo on startup. Replaced by simple text',\n      initial: defaultConfig.other.noLogo.value\n    },\n    {\n      type: 'toggle',\n      name: 'hardResetPage',\n      message: 'Decides if the page content should be reset entirely',\n      initial: defaultConfig.other.hardResetPage.value\n    },\n    {\n      type: 'toggle',\n      name: 'browserShellMode',\n      message: 'Decides if the browser runs in the shell mode',\n      initial: defaultConfig.other.browserShellMode.value\n    }\n  ],\n  debug: [\n    {\n      type: 'toggle',\n      name: 'enable',\n      message: 'Enables debug mode for the browser instance',\n      initial: defaultConfig.debug.enable.value\n    },\n    {\n      type: 'toggle',\n      name: 'headless',\n      message: 'The mode setting for the browser',\n      initial: defaultConfig.debug.headless.value\n    },\n    {\n      type: 'toggle',\n      name: 'devtools',\n      message: 'The DevTools for the headful browser',\n      initial: defaultConfig.debug.devtools.value\n    },\n    {\n      type: 'toggle',\n      name: 'listenToConsole',\n      message: 'The event listener for console messages from the browser',\n      initial: defaultConfig.debug.listenToConsole.value\n    },\n    {\n      type: 'toggle',\n      name: 'dumpio',\n      message: 'Redirects the browser stdout and stderr to NodeJS process',\n      initial: defaultConfig.debug.dumpio.value\n    },\n    {\n      type: 'number',\n      name: 'slowMo',\n      message: 'Puppeteer operations slow down in milliseconds',\n      initial: defaultConfig.debug.slowMo.value\n    },\n    {\n      type: 'number',\n      name: 'debuggingPort',\n      message: 'The port number for debugging',\n      initial: defaultConfig.debug.debuggingPort.value\n    }\n  ]\n};\n\n// Absolute props that, in case of merging recursively, need to be force merged\nexport const absoluteProps = [\n  'options',\n  'globalOptions',\n  'themeOptions',\n  'resources',\n  'payload'\n];\n\n// Argument nesting level of all export server options\nexport const nestedArgs = {};\n\n/**\n * Recursively creates a chain of nested arguments from an object.\n *\n * @param {Object} obj - The object containing nested arguments.\n * @param {string} propChain - The current chain of nested properties\n * (used internally during recursion).\n */\nconst createNestedArgs = (obj, propChain = '') => {\n  Object.keys(obj).forEach((k) => {\n    if (!['puppeteer', 'highcharts'].includes(k)) {\n      const entry = obj[k];\n      if (typeof entry.value === 'undefined') {\n        // Go deeper in the nested arguments\n        createNestedArgs(entry, `${propChain}.${k}`);\n      } else {\n        // Create the chain of nested arguments\n        nestedArgs[entry.cliName || k] = `${propChain}.${k}`.substring(1);\n\n        // Support for the legacy, PhantomJS properties names\n        if (entry.legacyName !== undefined) {\n          nestedArgs[entry.legacyName] = `${propChain}.${k}`.substring(1);\n        }\n      }\n    }\n  });\n};\n\ncreateNestedArgs(defaultConfig);\n","/**\n * @fileoverview\n * This file is responsible for parsing the environment variables with the 'zod'\n * library. The parsed environment variables are then exported to be used\n * in the application as \"envs\". We should not use process.env directly\n * in the application as these would not be parsed properly.\n *\n * The environment variables are parsed and validated only once when\n * the application starts. We should write a custom validator or a transformer\n * for each of the options.\n */\n\nimport dotenv from 'dotenv';\nimport { z } from 'zod';\n\nimport { scriptsNames } from './schemas/config.js';\n\n// Load .env into environment variables\ndotenv.config();\n\n// Object with custom validators and transformers, to avoid repetition\n// in the Config object\nconst v = {\n  // Splits string value into elements in an array, trims every element, checks\n  // if an array is correct, if it is empty, and if it is, returns undefined\n  array: (filterArray) =>\n    z\n      .string()\n      .transform((value) =>\n        value\n          .split(',')\n          .map((value) => value.trim())\n          .filter((value) => filterArray.includes(value))\n      )\n      .transform((value) => (value.length ? value : undefined)),\n\n  // Allows only true, false and correctly parse the value to boolean\n  // or no value in which case the returned value will be undefined\n  boolean: () =>\n    z\n      .enum(['true', 'false', ''])\n      .transform((value) => (value !== '' ? value === 'true' : undefined)),\n\n  // Allows passed values or no value in which case the returned value will\n  // be undefined\n  enum: (values) =>\n    z\n      .enum([...values, ''])\n      .transform((value) => (value !== '' ? value : undefined)),\n\n  // Trims the string value and checks if it is empty or contains stringified\n  // values such as false, undefined, null, NaN, if it does, returns undefined\n  string: () =>\n    z\n      .string()\n      .trim()\n      .refine(\n        (value) =>\n          !['false', 'undefined', 'null', 'NaN'].includes(value) ||\n          value === '',\n        (value) => ({\n          message: `The string contains forbidden values, received '${value}'`\n        })\n      )\n      .transform((value) => (value !== '' ? value : undefined)),\n\n  // Allows positive numbers or no value in which case the returned value will\n  // be undefined\n  positiveNum: () =>\n    z\n      .string()\n      .trim()\n      .refine(\n        (value) =>\n          value === '' || (!isNaN(parseFloat(value)) && parseFloat(value) > 0),\n        (value) => ({\n          message: `The value must be numeric and positive, received '${value}'`\n        })\n      )\n      .transform((value) => (value !== '' ? parseFloat(value) : undefined)),\n\n  // Allows non-negative numbers or no value in which case the returned value\n  // will be undefined\n  nonNegativeNum: () =>\n    z\n      .string()\n      .trim()\n      .refine(\n        (value) =>\n          value === '' || (!isNaN(parseFloat(value)) && parseFloat(value) >= 0),\n        (value) => ({\n          message: `The value must be numeric and non-negative, received '${value}'`\n        })\n      )\n      .transform((value) => (value !== '' ? parseFloat(value) : undefined))\n};\n\nexport const Config = z.object({\n  // highcharts\n  HIGHCHARTS_VERSION: z\n    .string()\n    .trim()\n    .refine(\n      (value) => /^(latest|\\d+(\\.\\d+){0,2})$/.test(value) || value === '',\n      (value) => ({\n        message: `HIGHCHARTS_VERSION must be 'latest', a major version, or in the form XX.YY.ZZ, received '${value}'`\n      })\n    )\n    .transform((value) => (value !== '' ? value : undefined)),\n  HIGHCHARTS_CDN_URL: z\n    .string()\n    .trim()\n    .refine(\n      (value) =>\n        value.startsWith('https://') ||\n        value.startsWith('http://') ||\n        value === '',\n      (value) => ({\n        message: `Invalid value for HIGHCHARTS_CDN_URL. It should start with http:// or https://, received '${value}'`\n      })\n    )\n    .transform((value) => (value !== '' ? value : undefined)),\n  HIGHCHARTS_CORE_SCRIPTS: v.array(scriptsNames.core),\n  HIGHCHARTS_MODULE_SCRIPTS: v.array(scriptsNames.modules),\n  HIGHCHARTS_INDICATOR_SCRIPTS: v.array(scriptsNames.indicators),\n  HIGHCHARTS_FORCE_FETCH: v.boolean(),\n  HIGHCHARTS_CACHE_PATH: v.string(),\n  HIGHCHARTS_ADMIN_TOKEN: v.string(),\n\n  // export\n  EXPORT_TYPE: v.enum(['jpeg', 'png', 'pdf', 'svg']),\n  EXPORT_CONSTR: v.enum(['chart', 'stockChart', 'mapChart', 'ganttChart']),\n  EXPORT_DEFAULT_HEIGHT: v.positiveNum(),\n  EXPORT_DEFAULT_WIDTH: v.positiveNum(),\n  EXPORT_DEFAULT_SCALE: v.positiveNum(),\n  EXPORT_RASTERIZATION_TIMEOUT: v.nonNegativeNum(),\n\n  // custom\n  CUSTOM_LOGIC_ALLOW_CODE_EXECUTION: v.boolean(),\n  CUSTOM_LOGIC_ALLOW_FILE_RESOURCES: v.boolean(),\n\n  // server\n  SERVER_ENABLE: v.boolean(),\n  SERVER_HOST: v.string(),\n  SERVER_PORT: v.positiveNum(),\n  SERVER_BENCHMARKING: v.boolean(),\n\n  // server proxy\n  SERVER_PROXY_HOST: v.string(),\n  SERVER_PROXY_PORT: v.positiveNum(),\n  SERVER_PROXY_USERNAME: v.string(),\n  SERVER_PROXY_PASSWORD: v.string(),\n  SERVER_PROXY_TIMEOUT: v.nonNegativeNum(),\n\n  // server rate limiting\n  SERVER_RATE_LIMITING_ENABLE: v.boolean(),\n  SERVER_RATE_LIMITING_MAX_REQUESTS: v.nonNegativeNum(),\n  SERVER_RATE_LIMITING_WINDOW: v.nonNegativeNum(),\n  SERVER_RATE_LIMITING_DELAY: v.nonNegativeNum(),\n  SERVER_RATE_LIMITING_TRUST_PROXY: v.boolean(),\n  SERVER_RATE_LIMITING_SKIP_KEY: v.string(),\n  SERVER_RATE_LIMITING_SKIP_TOKEN: v.string(),\n\n  // server ssl\n  SERVER_SSL_ENABLE: v.boolean(),\n  SERVER_SSL_FORCE: v.boolean(),\n  SERVER_SSL_PORT: v.positiveNum(),\n  SERVER_SSL_CERT_PATH: v.string(),\n\n  // pool\n  POOL_MIN_WORKERS: v.nonNegativeNum(),\n  POOL_MAX_WORKERS: v.nonNegativeNum(),\n  POOL_WORK_LIMIT: v.positiveNum(),\n  POOL_ACQUIRE_TIMEOUT: v.nonNegativeNum(),\n  POOL_CREATE_TIMEOUT: v.nonNegativeNum(),\n  POOL_DESTROY_TIMEOUT: v.nonNegativeNum(),\n  POOL_IDLE_TIMEOUT: v.nonNegativeNum(),\n  POOL_CREATE_RETRY_INTERVAL: v.nonNegativeNum(),\n  POOL_REAPER_INTERVAL: v.nonNegativeNum(),\n  POOL_BENCHMARKING: v.boolean(),\n\n  // logger\n  LOGGING_LEVEL: z\n    .string()\n    .trim()\n    .refine(\n      (value) =>\n        value === '' ||\n        (!isNaN(parseFloat(value)) &&\n          parseFloat(value) >= 0 &&\n          parseFloat(value) <= 5),\n      (value) => ({\n        message: `Invalid value for LOGGING_LEVEL. We only accept values from 0 to 5 as logging levels, received '${value}'`\n      })\n    )\n    .transform((value) => (value !== '' ? parseFloat(value) : undefined)),\n  LOGGING_FILE: v.string(),\n  LOGGING_DEST: v.string(),\n  LOGGING_TO_CONSOLE: v.boolean(),\n  LOGGING_TO_FILE: v.boolean(),\n\n  // ui\n  UI_ENABLE: v.boolean(),\n  UI_ROUTE: v.string(),\n\n  // other\n  OTHER_NODE_ENV: v.enum(['development', 'production', 'test']),\n  OTHER_LISTEN_TO_PROCESS_EXITS: v.boolean(),\n  OTHER_NO_LOGO: v.boolean(),\n  OTHER_HARD_RESET_PAGE: v.boolean(),\n  OTHER_BROWSER_SHELL_MODE: v.boolean(),\n\n  // debugger\n  DEBUG_ENABLE: v.boolean(),\n  DEBUG_HEADLESS: v.boolean(),\n  DEBUG_DEVTOOLS: v.boolean(),\n  DEBUG_LISTEN_TO_CONSOLE: v.boolean(),\n  DEBUG_DUMPIO: v.boolean(),\n  DEBUG_SLOW_MO: v.nonNegativeNum(),\n  DEBUG_DEBUGGING_PORT: v.positiveNum()\n});\n\nexport const envs = Config.partial().parse(process.env);\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { appendFile, existsSync, mkdirSync } from 'fs';\n\n// The available colors\nconst colors = ['red', 'yellow', 'blue', 'gray', 'green'];\n\n// The default logging config\nlet logging = {\n  // Flags for logging status\n  toConsole: true,\n  toFile: false,\n  pathCreated: false,\n  // Log levels\n  levelsDesc: [\n    {\n      title: 'error',\n      color: colors[0]\n    },\n    {\n      title: 'warning',\n      color: colors[1]\n    },\n    {\n      title: 'notice',\n      color: colors[2]\n    },\n    {\n      title: 'verbose',\n      color: colors[3]\n    },\n    {\n      title: 'benchmark',\n      color: colors[4]\n    }\n  ],\n  // Log listeners\n  listeners: []\n};\n\n/**\n * Logs the provided texts to a file, if file logging is enabled. It creates\n * the necessary directory structure if not already created and appends the\n * content, including an optional prefix, to the specified log file.\n *\n * @param {string[]} texts - An array of texts to be logged.\n * @param {string} prefix - An optional prefix to be added to each log entry.\n */\nconst logToFile = (texts, prefix) => {\n  if (!logging.pathCreated) {\n    // Create if does not exist\n    !existsSync(logging.dest) && mkdirSync(logging.dest);\n\n    // We now assume the path is available, e.g. it's the responsibility\n    // of the user to create the path with the correct access rights.\n    logging.pathCreated = true;\n  }\n\n  // Add the content to a file\n  appendFile(\n    `${logging.dest}${logging.file}`,\n    [prefix].concat(texts).join(' ') + '\\n',\n    (error) => {\n      if (error) {\n        console.log(`[logger] Unable to write to log file: ${error}`);\n        logging.toFile = false;\n      }\n    }\n  );\n};\n\n/**\n * Logs a message. Accepts a variable amount of arguments. Arguments after\n * `level` will be passed directly to console.log, and/or will be joined\n * and appended to the log file.\n *\n * @param {any} args - An array of arguments where the first is the log level\n * and the rest are strings to build a message with.\n */\nexport const log = (...args) => {\n  const [newLevel, ...texts] = args;\n\n  // Current logging options\n  const { levelsDesc, level } = logging;\n\n  // Check if log level is within a correct range or is a benchmark log\n  if (\n    newLevel !== 5 &&\n    (newLevel === 0 || newLevel > level || level > levelsDesc.length)\n  ) {\n    return;\n  }\n\n  // Get rid of the GMT text information\n  const newDate = new Date().toString().split('(')[0].trim();\n\n  // Create a message's prefix\n  const prefix = `${newDate} [${levelsDesc[newLevel - 1].title}] -`;\n\n  // Call available log listeners\n  logging.listeners.forEach((fn) => {\n    fn(prefix, texts.join(' '));\n  });\n\n  // Log to console\n  if (logging.toConsole) {\n    console.log.apply(\n      undefined,\n      [prefix.toString()[logging.levelsDesc[newLevel - 1].color]].concat(texts)\n    );\n  }\n\n  // Log to file\n  if (logging.toFile) {\n    logToFile(texts, prefix);\n  }\n};\n\n/**\n * Logs an error message with its stack trace. Optionally, a custom message\n * can be provided.\n *\n * @param {number} level - The log level.\n * @param {Error} error - The error object.\n * @param {string} customMessage - An optional custom message to be logged along\n * with the error.\n */\nexport const logWithStack = (newLevel, error, customMessage) => {\n  // Get the main message\n  const mainMessage = customMessage || error.message;\n\n  // Current logging options\n  const { level, levelsDesc } = logging;\n\n  // Check if log level is within a correct range\n  if (newLevel === 0 || newLevel > level || level > levelsDesc.length) {\n    return;\n  }\n\n  // Get rid of the GMT text information\n  const newDate = new Date().toString().split('(')[0].trim();\n\n  // Create a message's prefix\n  const prefix = `${newDate} [${levelsDesc[newLevel - 1].title}] -`;\n\n  // If the customMessage exists, we want to display the whole stack message\n  const stackMessage =\n    error.message !== error.stackMessage || error.stackMessage === undefined\n      ? error.stack\n      : error.stack.split('\\n').slice(1).join('\\n');\n\n  // Combine custom message or error message with error stack message\n  const texts = [mainMessage, '\\n', stackMessage];\n\n  // Log to console\n  if (logging.toConsole) {\n    console.log.apply(\n      undefined,\n      [prefix.toString()[logging.levelsDesc[newLevel - 1].color]].concat([\n        mainMessage[colors[newLevel - 1]],\n        '\\n',\n        stackMessage\n      ])\n    );\n  }\n\n  // Call available log listeners\n  logging.listeners.forEach((fn) => {\n    fn(prefix, texts.join(' '));\n  });\n\n  // Log to file\n  if (logging.toFile) {\n    logToFile(texts, prefix);\n  }\n};\n\n/**\n * Sets the log level to the specified value. Log levels are (0 = no logging,\n * 1 = error, 2 = warning, 3 = notice, 4 = verbose or 5 = benchmark)\n *\n * @param {number} newLevel - The new log level to be set.\n */\nexport const setLogLevel = (newLevel) => {\n  if (newLevel >= 0 && newLevel <= logging.levelsDesc.length) {\n    logging.level = newLevel;\n  }\n};\n\n/**\n * Enables file logging with the specified destination and log file.\n *\n * @param {string} logDest - The destination path for log files.\n * @param {string} logFile - The log file name.\n */\nexport const enableFileLogging = (logDest, logFile) => {\n  // Update logging options\n  logging = {\n    ...logging,\n    dest: logDest || logging.dest,\n    file: logFile || logging.file,\n    toFile: true\n  };\n\n  if (logging.dest.length === 0) {\n    return log(1, '[logger] File logging initialization: no path supplied.');\n  }\n\n  if (!logging.dest.endsWith('/')) {\n    logging.dest += '/';\n  }\n};\n\n/**\n * Initializes logging with the specified logging configuration.\n *\n * @param {Object} loggingOptions - The logging configuration object.\n */\nexport const initLogging = (loggingOptions) => {\n  // Set all the logging options on our logging module object\n  for (const [key, value] of Object.entries(loggingOptions)) {\n    logging[key] = value;\n  }\n\n  // Set the log level\n  setLogLevel(loggingOptions && parseInt(loggingOptions.level));\n\n  // Set the log file path and name\n  if (loggingOptions && loggingOptions.dest && loggingOptions.toFile) {\n    enableFileLogging(\n      loggingOptions.dest,\n      loggingOptions.file || 'highcharts-export-server.log'\n    );\n  }\n};\n\n/**\n * Adds a listener function to the logging system.\n *\n * @param {function} fn - The listener function to be added.\n */\nexport const listen = (fn) => {\n  logging.listeners.push(fn);\n};\n\nexport default {\n  log,\n  logWithStack,\n  setLogLevel,\n  enableFileLogging,\n  initLogging,\n  listen\n};\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { readFileSync } from 'fs';\nimport { join } from 'path';\nimport { fileURLToPath } from 'url';\n\nimport { defaultConfig } from '../lib/schemas/config.js';\nimport { log, logWithStack } from './logger.js';\n\nconst MAX_BACKOFF_ATTEMPTS = 6;\n\nexport const __dirname = fileURLToPath(new URL('../.', import.meta.url));\n\n/**\n * Clears and standardizes text by replacing multiple consecutive whitespace\n * characters with a single space and trimming any leading or trailing\n * whitespace.\n *\n * @param {string} text - The input text to be cleared.\n * @param {RegExp} [rule=/\\s\\s+/g] - The regular expression rule to match\n * multiple consecutive whitespace characters.\n * @param {string} [replacer=' '] - The string used to replace multiple\n * consecutive whitespace characters.\n *\n * @returns {string} - The cleared and standardized text.\n */\nexport const clearText = (text, rule = /\\s\\s+/g, replacer = ' ') =>\n  text.replaceAll(rule, replacer).trim();\n\n/**\n * Implements an exponential backoff strategy for retrying a function until\n * a certain number of attempts are reached.\n *\n * @param {Function} fn - The function to be retried.\n * @param {number} [attempt=0] - The current attempt number.\n * @param {...any} args - Arguments to be passed to the function.\n *\n * @returns {Promise} - A promise that resolves to the result of the function\n * if successful.\n *\n * @throws {Error} - Throws an error if the maximum number of attempts\n * is reached.\n */\nexport const expBackoff = async (fn, attempt = 0, ...args) => {\n  try {\n    // Try to call the function\n    return await fn(...args);\n  } catch (error) {\n    // Calculate delay in ms\n    const delayInMs = 2 ** attempt * 1000;\n\n    // If the attempt exceeds the maximum attempts of reapeat, throw an error\n    if (++attempt >= MAX_BACKOFF_ATTEMPTS) {\n      throw error;\n    }\n\n    // Wait given amount of time\n    await new Promise((response) => setTimeout(response, delayInMs));\n    log(\n      3,\n      `[pool] Waited ${delayInMs}ms until next call for the resource id: ${args[0]}.`\n    );\n\n    // Try again\n    return expBackoff(fn, attempt, ...args);\n  }\n};\n\n/**\n * Fixes the export type based on MIME types and file extensions.\n *\n * @param {string} type - The original export type.\n * @param {string} outfile - The file path or name.\n *\n * @returns {string} - The corrected export type.\n */\nexport const fixType = (type, outfile) => {\n  // MIME types\n  const mimeTypes = {\n    'image/png': 'png',\n    'image/jpeg': 'jpeg',\n    'application/pdf': 'pdf',\n    'image/svg+xml': 'svg'\n  };\n\n  // Formats\n  const formats = ['png', 'jpeg', 'pdf', 'svg'];\n\n  // Check if type and outfile's extensions are the same\n  if (outfile) {\n    const outType = outfile.split('.').pop();\n\n    if (outType === 'jpg') {\n      type = 'jpeg';\n    } else if (formats.includes(outType) && type !== outType) {\n      type = outType;\n    }\n  }\n\n  // Return a correct type\n  return mimeTypes[type] || formats.find((t) => t === type) || 'png';\n};\n\n/**\n * Handles and validates resources for export.\n *\n * @param {Object|string} resources - The resources to be handled. Can be either\n * a JSON object, stringified JSON or a path to a JSON file.\n * @param {boolean} allowFileResources - Whether to allow loading resources from\n * files.\n *\n * @returns {Object|undefined} - The handled resources or undefined if no valid\n * resources are found.\n */\nexport const handleResources = (resources = false, allowFileResources) => {\n  const allowedProps = ['js', 'css', 'files'];\n\n  let handledResources = resources;\n  let correctResources = false;\n\n  // Try to load resources from a file\n  if (allowFileResources && resources.endsWith('.json')) {\n    try {\n      handledResources = isCorrectJSON(readFileSync(resources, 'utf8'));\n    } catch (error) {\n      return logWithStack(2, error, `[cli] No resources found.`);\n    }\n  } else {\n    // Try to get JSON\n    handledResources = isCorrectJSON(resources);\n\n    // Get rid of the files section\n    if (handledResources && !allowFileResources) {\n      delete handledResources.files;\n    }\n  }\n\n  // Filter from unnecessary properties\n  for (const propName in handledResources) {\n    if (!allowedProps.includes(propName)) {\n      delete handledResources[propName];\n    } else if (!correctResources) {\n      correctResources = true;\n    }\n  }\n\n  // Check if at least one of allowed properties is present\n  if (!correctResources) {\n    return log(3, `[cli] No resources found.`);\n  }\n\n  // Handle files section\n  if (handledResources.files) {\n    handledResources.files = handledResources.files.map((item) => item.trim());\n    if (!handledResources.files || handledResources.files.length <= 0) {\n      delete handledResources.files;\n    }\n  }\n\n  // Return resources\n  return handledResources;\n};\n\n/**\n * Validates and parses JSON data. Checks if provided data is or can\n * be a correct JSON. If a primitive is provided, it is stringified and returned.\n *\n * @param {Object|string} data - The JSON data to be validated and parsed.\n * @param {boolean} toString - Whether to return a stringified representation\n * of the parsed JSON.\n *\n * @returns {Object|string|boolean} - The parsed JSON object, stringified JSON,\n * or false if validation fails.\n */\nexport function isCorrectJSON(data, toString) {\n  try {\n    // Get the string representation if not already before parsing\n    const parsedData = JSON.parse(\n      typeof data !== 'string' ? JSON.stringify(data) : data\n    );\n\n    // Return a stringified representation of a JSON if required\n    if (typeof parsedData !== 'string' && toString) {\n      return JSON.stringify(parsedData);\n    }\n\n    // Return a JSON\n    return parsedData;\n  } catch {\n    return false;\n  }\n}\n\n/**\n * Checks if the given item is an object.\n *\n * @param {any} item - The item to be checked.\n *\n * @returns {boolean} - True if the item is an object, false otherwise.\n */\nexport const isObject = (item) =>\n  typeof item === 'object' && !Array.isArray(item) && item !== null;\n\n/**\n * Checks if the given object is empty.\n *\n * @param {Object} item - The object to be checked.\n *\n * @returns {boolean} - True if the object is empty, false otherwise.\n */\nexport const isObjectEmpty = (item) =>\n  typeof item === 'object' &&\n  !Array.isArray(item) &&\n  item !== null &&\n  Object.keys(item).length === 0;\n\n/**\n * Checks if a private IP range URL is found in the given string.\n *\n * @param {string} item - The string to be checked for a private IP range URL.\n *\n * @returns {boolean} - True if a private IP range URL is found, false\n * otherwise.\n */\nexport const isPrivateRangeUrlFound = (item) => {\n  const regexPatterns = [\n    /xlink:href=\"(?:http:\\/\\/|https:\\/\\/)?localhost\\b/,\n    /xlink:href=\"(?:http:\\/\\/|https:\\/\\/)?10\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\b/,\n    /xlink:href=\"(?:http:\\/\\/|https:\\/\\/)?127\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\b/,\n    /xlink:href=\"(?:http:\\/\\/|https:\\/\\/)?172\\.(1[6-9]|2[0-9]|3[0-1])\\.\\d{1,3}\\.\\d{1,3}\\b/,\n    /xlink:href=\"(?:http:\\/\\/|https:\\/\\/)?192\\.168\\.\\d{1,3}\\.\\d{1,3}\\b/\n  ];\n\n  return regexPatterns.some((pattern) => pattern.test(item));\n};\n\n/**\n * Creates a deep copy of the given object or array.\n *\n * @param {Object|Array} obj - The object or array to be deeply copied.\n *\n * @returns {Object|Array} - The deep copy of the provided object or array.\n */\nexport const deepCopy = (obj) => {\n  if (obj === null || typeof obj !== 'object') {\n    return obj;\n  }\n\n  const copy = Array.isArray(obj) ? [] : {};\n\n  for (const key in obj) {\n    if (Object.prototype.hasOwnProperty.call(obj, key)) {\n      copy[key] = deepCopy(obj[key]);\n    }\n  }\n\n  return copy;\n};\n\n/**\n * Converts the provided options object to a JSON-formatted string with the\n * option to preserve functions.\n *\n * @param {Object} options - The options object to be converted to a string.\n * @param {boolean} allowFunctions - If set to true, functions are preserved\n * in the output.\n *\n * @returns {string} - The JSON-formatted string representing the options.\n */\nexport const optionsStringify = (options, allowFunctions) => {\n  const replacerCallback = (name, value) => {\n    if (typeof value === 'string') {\n      value = value.trim();\n\n      // If allowFunctions is set to true, preserve functions\n      if (\n        (value.startsWith('function(') || value.startsWith('function (')) &&\n        value.endsWith('}')\n      ) {\n        value = allowFunctions\n          ? `EXP_FUN${(value + '').replaceAll(/\\n|\\t|\\r/g, ' ')}EXP_FUN`\n          : undefined;\n      }\n    }\n\n    return typeof value === 'function'\n      ? `EXP_FUN${(value + '').replaceAll(/\\n|\\t|\\r/g, ' ')}EXP_FUN`\n      : value;\n  };\n\n  // Stringify options and if required, replace special functions marks\n  return JSON.stringify(options, replacerCallback).replaceAll(\n    /\"EXP_FUN|EXP_FUN\"/g,\n    ''\n  );\n};\n\n/**\n * Prints the Highcharts Export Server logo and version information.\n *\n * @param {boolean} noLogo - If true, only prints version information without\n * the logo.\n */\nexport const printLogo = (noLogo) => {\n  // Get package version either from env or from package.json\n  const packageVersion = JSON.parse(\n    readFileSync(join(__dirname, 'package.json'))\n  ).version;\n\n  // Print text only\n  if (noLogo) {\n    console.log(`Starting Highcharts Export Server v${packageVersion}...`);\n    return;\n  }\n\n  // Print the logo\n  console.log(\n    readFileSync(__dirname + '/msg/startup.msg').toString().bold.yellow,\n    `v${packageVersion}\\n`.bold\n  );\n};\n\n/**\n * Prints the usage information for CLI arguments. If required, it can list\n * properties recursively\n */\nexport function printUsage() {\n  const pad = 48;\n  const readme = 'https://github.com/highcharts/node-export-server#readme';\n\n  // Display readme information\n  console.log(\n    '\\nUsage of CLI arguments:'.bold,\n    '\\n------',\n    `\\nFor more detailed information, visit the readme at: ${readme.bold.yellow}.`\n  );\n\n  const cycleCategories = (options) => {\n    for (const [name, option] of Object.entries(options)) {\n      // If category has more levels, go further\n      if (!Object.prototype.hasOwnProperty.call(option, 'value')) {\n        cycleCategories(option);\n      } else {\n        let descName = `  --${option.cliName || name} ${\n          ('<' + option.type + '>').green\n        } `;\n        if (descName.length < pad) {\n          for (let i = descName.length; i < pad; i++) {\n            descName += '.';\n          }\n        }\n\n        // Display correctly aligned messages\n        console.log(\n          descName,\n          option.description,\n          `[Default: ${option.value.toString().bold}]`.blue\n        );\n      }\n    }\n  };\n\n  // Cycle through options of each categories and display the usage info\n  Object.keys(defaultConfig).forEach((category) => {\n    // Only puppeteer and highcharts categories cannot be configured through CLI\n    if (!['puppeteer', 'highcharts'].includes(category)) {\n      console.log(`\\n${category.toUpperCase()}`.red);\n      cycleCategories(defaultConfig[category]);\n    }\n  });\n  console.log('\\n');\n}\n\n/**\n * Rounds a number to the specified precision.\n *\n * @param {number} value - The number to be rounded.\n * @param {number} precision - The number of decimal places to round to.\n *\n * @returns {number} - The rounded number.\n */\nexport const roundNumber = (value, precision = 1) => {\n  const multiplier = Math.pow(10, precision || 0);\n  return Math.round(+value * multiplier) / multiplier;\n};\n\n/**\n * Converts a value to a boolean.\n *\n * @param {any} item - The value to be converted to a boolean.\n *\n * @returns {boolean} - The boolean representation of the input value.\n */\nexport const toBoolean = (item) =>\n  ['false', 'undefined', 'null', 'NaN', '0', ''].includes(item)\n    ? false\n    : !!item;\n\n/**\n * Wraps custom code to execute it safely.\n *\n * @param {string} customCode - The custom code to be wrapped.\n * @param {boolean} allowFileResources - Flag to allow loading code from a file.\n *\n * @returns {string|boolean} - The wrapped custom code or false if wrapping\n * fails.\n */\nexport const wrapAround = (customCode, allowFileResources) => {\n  if (customCode && typeof customCode === 'string') {\n    customCode = customCode.trim();\n\n    if (customCode.endsWith('.js')) {\n      return allowFileResources\n        ? wrapAround(readFileSync(customCode, 'utf8'))\n        : false;\n    } else if (\n      customCode.startsWith('function()') ||\n      customCode.startsWith('function ()') ||\n      customCode.startsWith('()=>') ||\n      customCode.startsWith('() =>')\n    ) {\n      return `(${customCode})()`;\n    }\n    return customCode.replace(/;$/, '');\n  }\n};\n\n/**\n * Utility to measure elapsed time using the Node.js process.hrtime() method.\n *\n * @returns {function(): number} - A function to calculate the elapsed time\n * in milliseconds.\n */\nexport const measureTime = () => {\n  const start = process.hrtime.bigint();\n  return () => Number(process.hrtime.bigint() - start) / 1000000;\n};\n\nexport default {\n  __dirname,\n  clearText,\n  expBackoff,\n  fixType,\n  handleResources,\n  isCorrectJSON,\n  isObject,\n  isObjectEmpty,\n  isPrivateRangeUrlFound,\n  optionsStringify,\n  printLogo,\n  printUsage,\n  roundNumber,\n  toBoolean,\n  wrapAround,\n  measureTime\n};\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { existsSync, readFileSync, promises as fsPromises } from 'fs';\n\nimport prompts from 'prompts';\n\nimport {\n  absoluteProps,\n  defaultConfig,\n  nestedArgs,\n  promptsConfig\n} from './schemas/config.js';\nimport { envs } from './envs.js';\nimport { log, logWithStack } from './logger.js';\nimport { deepCopy, isObject, printUsage, toBoolean } from './utils.js';\n\nlet generalOptions = {};\n\n/**\n * Retrieves and returns the general options for the export process.\n *\n * @returns {Object} The general options object.\n */\nexport const getOptions = () => generalOptions;\n\n/**\n * Initializes and sets the general options for the server instace, keeping\n * the principle of the options load priority. It accepts optional userOptions\n * and args from the CLI.\n *\n * @param {Object} userOptions - User-provided options for customization.\n * @param {Array} args - Command-line arguments for additional configuration\n * (CLI usage).\n *\n * @returns {Object} The updated general options object.\n */\nexport const setOptions = (userOptions, args) => {\n  // Only for the CLI usage\n  if (args?.length) {\n    // Get the additional options from the custom JSON file\n    generalOptions = loadConfigFile(args);\n  }\n\n  // Update the default config with a correct option values\n  updateDefaultConfig(defaultConfig, generalOptions);\n\n  // Set values for server's options and returns them\n  generalOptions = initOptions(defaultConfig);\n\n  // Apply user options if there are any\n  if (userOptions) {\n    // Merge user options\n    generalOptions = mergeConfigOptions(\n      generalOptions,\n      userOptions,\n      absoluteProps\n    );\n  }\n\n  // Only for the CLI usage\n  if (args?.length) {\n    // Pair provided arguments\n    generalOptions = pairArgumentValue(generalOptions, args, defaultConfig);\n  }\n\n  // Return final general options\n  return generalOptions;\n};\n\n/**\n * Allows manual configuration based on specified prompts and saves\n * the configuration to a file.\n *\n * @param {string} configFileName - The name of the configuration file.\n *\n * @returns {Promise<boolean>} A Promise that resolves to true once the manual\n * configuration is completed and saved.\n */\nexport const manualConfig = async (configFileName) => {\n  // Prepare a config object\n  let configFile = {};\n\n  // Check if provided config file exists\n  if (existsSync(configFileName)) {\n    configFile = JSON.parse(readFileSync(configFileName, 'utf8'));\n  }\n\n  // Question about a configuration category\n  const onSubmit = async (p, categories) => {\n    let questionsCounter = 0;\n    let allQuestions = [];\n\n    // Create a corresponding property in the manualConfig object\n    for (const section of categories) {\n      // Mark each option with a section\n      promptsConfig[section] = promptsConfig[section].map((option) => ({\n        ...option,\n        section\n      }));\n\n      // Collect the questions\n      allQuestions = [...allQuestions, ...promptsConfig[section]];\n    }\n\n    await prompts(allQuestions, {\n      onSubmit: async (prompt, answer) => {\n        // Get the default module scripts\n        if (prompt.name === 'moduleScripts') {\n          answer = answer.length\n            ? answer.map((module) => prompt.choices[module])\n            : prompt.choices;\n\n          configFile[prompt.section][prompt.name] = answer;\n        } else {\n          configFile[prompt.section] = recursiveProps(\n            Object.assign({}, configFile[prompt.section] || {}),\n            prompt.name.split('.'),\n            prompt.choices ? prompt.choices[answer] : answer\n          );\n        }\n\n        if (++questionsCounter === allQuestions.length) {\n          try {\n            await fsPromises.writeFile(\n              configFileName,\n              JSON.stringify(configFile, null, 2),\n              'utf8'\n            );\n          } catch (error) {\n            logWithStack(\n              1,\n              error,\n              `[config] An error occurred while creating the ${configFileName} file.`\n            );\n          }\n          return true;\n        }\n      }\n    });\n\n    return true;\n  };\n\n  // Find the categories\n  const choices = Object.keys(promptsConfig).map((choice) => ({\n    title: `${choice} options`,\n    value: choice\n  }));\n\n  // Category prompt\n  return prompts(\n    {\n      type: 'multiselect',\n      name: 'category',\n      message: 'Which category do you want to configure?',\n      hint: 'Space: Select specific, A: Select all, Enter: Confirm.',\n      instructions: '',\n      choices\n    },\n    { onSubmit }\n  );\n};\n\n/**\n * Maps old-structured (PhantomJS) options to a new configuration format\n * (Puppeteer).\n *\n * @param {Object} oldOptions - Old-structured options to be mapped.\n *\n * @returns {Object} New options structured based on the defined nestedArgs\n * mapping.\n */\nexport const mapToNewConfig = (oldOptions) => {\n  const newOptions = {};\n  // Cycle through old-structured options\n  for (const [key, value] of Object.entries(oldOptions)) {\n    const propertiesChain = nestedArgs[key] ? nestedArgs[key].split('.') : [];\n\n    // Populate object in correct properties levels\n    propertiesChain.reduce(\n      (obj, prop, index) =>\n        (obj[prop] =\n          propertiesChain.length - 1 === index ? value : obj[prop] || {}),\n      newOptions\n    );\n  }\n  return newOptions;\n};\n\n/**\n * Merges two sets of configuration options, considering absolute properties.\n *\n * @param {Object} options - Original configuration options.\n * @param {Object} newOptions - New configuration options to be merged.\n * @param {Array} absoluteProps - List of properties that should\n * not be recursively merged.\n *\n * @returns {Object} Merged configuration options.\n */\nexport const mergeConfigOptions = (options, newOptions, absoluteProps = []) => {\n  const mergedOptions = deepCopy(options);\n\n  for (const [key, value] of Object.entries(newOptions)) {\n    mergedOptions[key] =\n      isObject(value) &&\n      !absoluteProps.includes(key) &&\n      mergedOptions[key] !== undefined\n        ? mergeConfigOptions(mergedOptions[key], value, absoluteProps)\n        : value !== undefined\n          ? value\n          : mergedOptions[key];\n  }\n\n  return mergedOptions;\n};\n\n/**\n * Initializes export settings based on provided exportOptions\n * and generalOptions.\n *\n * @param {Object} exportOptions - Options specific to the export process.\n * @param {Object} generalOptions - General configuration options.\n *\n * @returns {Object} Initialized export settings.\n */\nexport const initExportSettings = (exportOptions, generalOptions = {}) => {\n  let options = {};\n\n  if (exportOptions.svg) {\n    options = deepCopy(generalOptions);\n    options.export.type = exportOptions.type || exportOptions.export.type;\n    options.export.scale = exportOptions.scale || exportOptions.export.scale;\n    options.export.outfile =\n      exportOptions.outfile || exportOptions.export.outfile;\n    options.payload = {\n      svg: exportOptions.svg\n    };\n  } else {\n    options = mergeConfigOptions(\n      generalOptions,\n      exportOptions,\n      // Omit going down recursively with the belows\n      absoluteProps\n    );\n  }\n\n  options.export.outfile =\n    options.export?.outfile || `chart.${options.export?.type || 'png'}`;\n  return options;\n};\n\n/**\n * Loads additional configuration from a specified file using\n * the --loadConfig option.\n *\n * @param {Array} args - Command-line arguments to check for\n * the --loadConfig option.\n *\n * @returns {Object} Additional configuration loaded from the specified file,\n * or an empty object if not found or invalid.\n */\nfunction loadConfigFile(args) {\n  // Check if the --loadConfig option was used\n  const configIndex = args.findIndex(\n    (arg) => arg.replace(/-/g, '') === 'loadConfig'\n  );\n\n  // Check if the --loadConfig has a value\n  if (configIndex > -1 && args[configIndex + 1]) {\n    const fileName = args[configIndex + 1];\n    try {\n      // Check if an additional config file is a correct JSON file\n      if (fileName && fileName.endsWith('.json')) {\n        // Load an optional custom JSON config file\n        return JSON.parse(readFileSync(fileName));\n      }\n    } catch (error) {\n      logWithStack(\n        2,\n        error,\n        `[config] Unable to load the configuration from the ${fileName} file.`\n      );\n    }\n  }\n\n  // No additional options to return\n  return {};\n}\n\n/**\n * Updates the default configuration object with values from a custom object\n * and environment variables.\n *\n * @param {Object} configObj - The default configuration object.\n * @param {Object} customObj - Custom configuration object to override defaults.\n * @param {string} propChain - Property chain for tracking nested properties\n * during recursion.\n */\nfunction updateDefaultConfig(configObj, customObj = {}, propChain = '') {\n  Object.keys(configObj).forEach((key) => {\n    const entry = configObj[key];\n    const customValue = customObj && customObj[key];\n\n    if (typeof entry.value === 'undefined') {\n      updateDefaultConfig(entry, customValue, `${propChain}.${key}`);\n    } else {\n      // If a value from a custom JSON exists, it take precedence\n      if (customValue !== undefined) {\n        entry.value = customValue;\n      }\n\n      // If a value from an env variable exists, it take precedence\n      if (entry.envLink in envs && envs[entry.envLink] !== undefined) {\n        entry.value = envs[entry.envLink];\n      }\n    }\n  });\n}\n\n/**\n * Initializes options object based on provided items, setting values from\n * nested properties recursively.\n *\n * @param {Object} items - Configuration items to be used for initializing\n * options.\n *\n * @returns {Object} Initialized options object.\n */\nfunction initOptions(items) {\n  let options = {};\n  for (const [name, item] of Object.entries(items)) {\n    options[name] = Object.prototype.hasOwnProperty.call(item, 'value')\n      ? item.value\n      : initOptions(item);\n  }\n  return options;\n}\n\n/**\n * Pairs argument values with corresponding options in the configuration,\n * updating the options object.\n *\n * @param {Object} options - Configuration options object to be updated.\n * @param {Array} args - Command-line arguments containing values for specific\n * options.\n * @param {Object} defaultConfig - Default configuration object for reference.\n *\n * @returns {Object} Updated options object.\n */\nfunction pairArgumentValue(options, args, defaultConfig) {\n  let showUsage = false;\n  for (let i = 0; i < args.length; i++) {\n    const option = args[i].replace(/-/g, '');\n\n    // Find the right place for property's value\n    const propertiesChain = nestedArgs[option]\n      ? nestedArgs[option].split('.')\n      : [];\n\n    // Get the correct type for CLI args which are passed as strings\n    let argumentType;\n    propertiesChain.reduce((obj, prop, index) => {\n      if (propertiesChain.length - 1 === index) {\n        argumentType = obj[prop].type;\n      }\n      return obj[prop];\n    }, defaultConfig);\n\n    propertiesChain.reduce((obj, prop, index) => {\n      if (propertiesChain.length - 1 === index) {\n        // Finds an option and set a corresponding value\n        if (typeof obj[prop] !== 'undefined') {\n          if (args[++i]) {\n            if (argumentType === 'boolean') {\n              obj[prop] = toBoolean(args[i]);\n            } else if (argumentType === 'number') {\n              obj[prop] = +args[i];\n            } else if (argumentType.indexOf(']') >= 0) {\n              obj[prop] = args[i].split(',');\n            } else {\n              obj[prop] = args[i];\n            }\n          } else {\n            log(\n              2,\n              `[config] Missing value for the '${option}' argument. Using the default value.`\n            );\n            showUsage = true;\n          }\n        }\n      }\n      return obj[prop];\n    }, options);\n  }\n\n  // Display the usage for the reference if needed\n  if (showUsage) {\n    printUsage(defaultConfig);\n  }\n\n  return options;\n}\n\n/**\n * Recursively updates properties in an object based on nested names and assigns\n * the final value.\n *\n * @param {Object} objectToUpdate - The object to be updated.\n * @param {Array} nestedNames - Array of nested property names.\n * @param {any} value - The final value to be assigned.\n *\n * @returns {Object} Updated object with assigned values.\n */\nfunction recursiveProps(objectToUpdate, nestedNames, value) {\n  while (nestedNames.length > 1) {\n    const propName = nestedNames.shift();\n\n    // Create a property in object if it doesn't exist\n    if (!Object.prototype.hasOwnProperty.call(objectToUpdate, propName)) {\n      objectToUpdate[propName] = {};\n    }\n\n    // Call function again if there still names to go\n    objectToUpdate[propName] = recursiveProps(\n      Object.assign({}, objectToUpdate[propName]),\n      nestedNames,\n      value\n    );\n\n    return objectToUpdate;\n  }\n\n  // Assign the final value\n  objectToUpdate[nestedNames[0]] = value;\n  return objectToUpdate;\n}\n\nexport default {\n  getOptions,\n  setOptions,\n  manualConfig,\n  mapToNewConfig,\n  mergeConfigOptions,\n  initExportSettings\n};\n","/**\n * This module exports two functions: fetch (for GET requests) and post (for POST requests).\n */\n\nimport http from 'http';\nimport https from 'https';\n\n/**\n * Returns the HTTP or HTTPS protocol module based on the provided URL.\n *\n * @param {string} url - The URL to determine the protocol.\n *\n * @returns {Object} The HTTP or HTTPS protocol module (http or https).\n */\nconst getProtocol = (url) => (url.startsWith('https') ? https : http);\n\n/**\n * Fetches data from the specified URL using either HTTP or HTTPS protocol.\n *\n * @param {string} url - The URL to fetch data from.\n * @param {Object} requestOptions - Options for the HTTP request (optional).\n *\n * @returns {Promise<Object>} Promise resolving to the HTTP response object\n * with added 'text' property or rejecting with an error.\n */\nasync function fetch(url, requestOptions = {}) {\n  return new Promise((resolve, reject) => {\n    const protocol = getProtocol(url);\n\n    protocol\n      .get(\n        url,\n        Object.assign(\n          {\n            headers: {\n              'User-Agent': 'highcharts/export',\n              Referer: 'highcharts/export'\n            }\n          },\n          requestOptions || {}\n        ),\n        (res) => {\n          let data = '';\n\n          // A chunk of data has been received.\n          res.on('data', (chunk) => {\n            data += chunk;\n          });\n\n          // The whole response has been received.\n          res.on('end', () => {\n            if (!data) {\n              reject('Nothing was fetched from the URL.');\n            }\n\n            res.text = data;\n            resolve(res);\n          });\n        }\n      )\n      .on('error', (error) => {\n        reject(error);\n      });\n  });\n}\n\n/**\n * Sends a POST request to the specified URL with the provided JSON body using\n * either HTTP or HTTPS protocol.\n *\n * @param {string} url - The URL to send the POST request to.\n * @param {Object} body - The JSON body to include in the POST request\n * (optional, default is an empty object).\n * @param {Object} requestOptions - Options for the HTTP request (optional).\n *\n * @returns {Promise<Object>} Promise resolving to the HTTP response object with\n * added 'text' property or rejecting with an error.\n */\nasync function post(url, body = {}, requestOptions = {}) {\n  return new Promise((resolve, reject) => {\n    const protocol = getProtocol(url);\n    const data = JSON.stringify(body);\n\n    // Set default headers and merge with requestOptions\n    const options = Object.assign(\n      {\n        method: 'POST',\n        headers: {\n          'Content-Type': 'application/json',\n          'Content-Length': data.length\n        }\n      },\n      requestOptions\n    );\n\n    const req = protocol\n      .request(url, options, (res) => {\n        let responseData = '';\n\n        // A chunk of data has been received.\n        res.on('data', (chunk) => {\n          responseData += chunk;\n        });\n\n        // The whole response has been received.\n        res.on('end', () => {\n          try {\n            res.text = responseData;\n            resolve(res);\n          } catch (error) {\n            reject(error);\n          }\n        });\n      })\n      .on('error', (error) => {\n        reject(error);\n      });\n\n    // Write the request body and end the request.\n    req.write(data);\n    req.end();\n  });\n}\n\nexport default fetch;\nexport { fetch, post };\n","class ExportError extends Error {\n  constructor(message) {\n    super();\n    this.message = message;\n    this.stackMessage = message;\n  }\n\n  setError(error) {\n    this.error = error;\n    if (error.name) {\n      this.name = error.name;\n    }\n    if (error.statusCode) {\n      this.statusCode = error.statusCode;\n    }\n    if (error.stack) {\n      this.stackMessage = error.message;\n      this.stack = error.stack;\n    }\n    return this;\n  }\n}\n\nexport default ExportError;\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\n// The cache manager manages the Highcharts library and its dependencies.\n// The cache itself is stored in .cache, and is checked by the config system\n// before starting the service\n\nimport { existsSync, mkdirSync, readFileSync, writeFileSync } from 'fs';\nimport { join } from 'path';\n\nimport { HttpsProxyAgent } from 'https-proxy-agent';\n\nimport { getOptions } from './config.js';\nimport { envs } from './envs.js';\nimport { fetch } from './fetch.js';\nimport { log } from './logger.js';\nimport { __dirname } from './utils.js';\n\nimport ExportError from './errors/ExportError.js';\n\nconst cache = {\n  cdnURL: 'https://code.highcharts.com/',\n  activeManifest: {},\n  sources: '',\n  hcVersion: ''\n};\n\n/**\n * Extracts and caches the Highcharts version from the sources string.\n *\n * @returns {string} The extracted Highcharts version.\n */\nexport const extractVersion = (cache) => {\n  return cache.sources\n    .substring(0, cache.sources.indexOf('*/'))\n    .replace('/*', '')\n    .replace('*/', '')\n    .replace(/\\n/g, '')\n    .trim();\n};\n\n/**\n * Extracts the Highcharts module name based on the scriptPath.\n */\nexport const extractModuleName = (scriptPath) => {\n  return scriptPath.replace(\n    /(.*)\\/|(.*)modules\\/|stock\\/(.*)indicators\\/|maps\\/(.*)modules\\//gi,\n    ''\n  );\n};\n\n/**\n * Saves the provided configuration and fetched modules to the cache manifest\n * file.\n *\n * @param {object} config - Highcharts-related configuration object.\n * @param {object} fetchedModules - An object that contains mapped names of\n * fetched Highcharts modules to use.\n *\n * @throws {ExportError} Throws an ExportError if an error occurs while writing\n * the cache manifest.\n */\nexport const saveConfigToManifest = async (config, fetchedModules) => {\n  const newManifest = {\n    version: config.version,\n    modules: fetchedModules || {}\n  };\n\n  // Update cache object with the current modules\n  cache.activeManifest = newManifest;\n\n  log(3, '[cache] Writing a new manifest.');\n  try {\n    writeFileSync(\n      join(__dirname, config.cachePath, 'manifest.json'),\n      JSON.stringify(newManifest),\n      'utf8'\n    );\n  } catch (error) {\n    throw new ExportError('[cache] Error writing the cache manifest.').setError(\n      error\n    );\n  }\n};\n\n/**\n * Fetches a single script and updates the fetchedModules accordingly.\n *\n * @param {string} script - A path to script to get.\n * @param {Object} requestOptions - Additional options for the proxy agent\n * to use for a request.\n * @param {Object} fetchedModules - An object which tracks which Highcharts\n * modules have been fetched.\n * @param {boolean} shouldThrowError - A flag to indicate if the error should be\n * thrown. This should be used only for the core scripts.\n *\n * @returns {Promise<string>} A Promise resolving to the text representation\n * of the fetched script.\n *\n * @throws {ExportError} Throws an ExportError if there is a problem with\n * fetching the script.\n */\nexport const fetchAndProcessScript = async (\n  script,\n  requestOptions,\n  fetchedModules,\n  shouldThrowError = false\n) => {\n  // Get rid of the .js from the custom strings\n  if (script.endsWith('.js')) {\n    script = script.substring(0, script.length - 3);\n  }\n\n  log(4, `[cache] Fetching script - ${script}.js`);\n\n  // Fetch the script\n  const response = await fetch(`${script}.js`, requestOptions);\n\n  // If OK, return its text representation\n  if (response.statusCode === 200 && typeof response.text == 'string') {\n    if (fetchedModules) {\n      const moduleName = extractModuleName(script);\n      fetchedModules[moduleName] = 1;\n    }\n\n    return response.text;\n  }\n\n  if (shouldThrowError) {\n    throw new ExportError(\n      `Could not fetch the ${script}.js. The script might not exist in the requested version (status code: ${response.statusCode}).`\n    ).setError(response);\n  } else {\n    log(\n      2,\n      `[cache] Could not fetch the ${script}.js. The script might not exist in the requested version.`\n    );\n  }\n\n  return '';\n};\n\n/**\n * Fetches Highcharts scripts and customScripts from the given CDNs.\n *\n * @param {string} coreScripts - Array of Highcharts core scripts to fetch.\n * @param {string} moduleScripts - Array of Highcharts modules to fetch.\n * @param {string} customScripts - Array of custom script paths to fetch\n * (full URLs).\n * @param {object} proxyOptions - Options for the proxy agent to use for\n * a request.\n * @param {object} fetchedModules - An object which tracks which Highcharts\n * modules have been fetched.\n *\n * @returns {Promise<string>} The fetched scripts content joined.\n */\nexport const fetchScripts = async (\n  coreScripts,\n  moduleScripts,\n  customScripts,\n  proxyOptions,\n  fetchedModules\n) => {\n  // Configure proxy if exists\n  let proxyAgent;\n  const { host, port, username, password } = proxyOptions;\n\n  // Try to create a Proxy Agent\n  if (host && port) {\n    try {\n      proxyAgent = new HttpsProxyAgent({\n        host,\n        port,\n        ...(username && password ? { username, password } : {})\n      });\n    } catch (error) {\n      throw new ExportError('[cache] Could not create a Proxy Agent.').setError(\n        error\n      );\n    }\n  }\n\n  // If exists, add proxy agent to request options\n  const requestOptions = proxyAgent\n    ? {\n        agent: proxyAgent,\n        timeout: envs.SERVER_PROXY_TIMEOUT\n      }\n    : {};\n\n  const allFetchPromises = [\n    ...coreScripts.map((script) =>\n      fetchAndProcessScript(`${script}`, requestOptions, fetchedModules, true)\n    ),\n    ...moduleScripts.map((script) =>\n      fetchAndProcessScript(`${script}`, requestOptions, fetchedModules)\n    ),\n    ...customScripts.map((script) =>\n      fetchAndProcessScript(`${script}`, requestOptions)\n    )\n  ];\n\n  const fetchedScripts = await Promise.all(allFetchPromises);\n  return fetchedScripts.join(';\\n');\n};\n\n/**\n * Updates the local cache with Highcharts scripts and their versions.\n *\n * @param {Object} options - Object containing all options.\n * @param {string} sourcePath - The path to the source file in the cache.\n *\n * @returns {Promise<object>} A Promise resolving to an object representing\n * the fetched modules.\n *\n * @throws {ExportError} Throws an ExportError if there is an issue updating\n * the local Highcharts cache.\n */\nexport const updateCache = async (\n  highchartsOptions,\n  proxyOptions,\n  sourcePath\n) => {\n  const version = highchartsOptions.version;\n  const hcVersion = version === 'latest' || !version ? '' : `${version}/`;\n  const cdnURL = highchartsOptions.cdnURL || cache.cdnURL;\n\n  log(\n    3,\n    `[cache] Updating cache version to Highcharts: ${hcVersion || 'latest'}.`\n  );\n\n  const fetchedModules = {};\n  try {\n    cache.sources = await fetchScripts(\n      [\n        ...highchartsOptions.coreScripts.map((c) => `${cdnURL}${hcVersion}${c}`)\n      ],\n      [\n        ...highchartsOptions.moduleScripts.map((m) =>\n          m === 'map'\n            ? `${cdnURL}maps/${hcVersion}modules/${m}`\n            : `${cdnURL}${hcVersion}modules/${m}`\n        ),\n        ...highchartsOptions.indicatorScripts.map(\n          (i) => `${cdnURL}stock/${hcVersion}indicators/${i}`\n        )\n      ],\n      highchartsOptions.customScripts,\n      proxyOptions,\n      fetchedModules\n    );\n\n    cache.hcVersion = extractVersion(cache);\n\n    // Save the fetched modules into caches' source JSON\n    writeFileSync(sourcePath, cache.sources);\n    return fetchedModules;\n  } catch (error) {\n    throw new ExportError(\n      '[cache] Unable to update the local Highcharts cache.'\n    ).setError(error);\n  }\n};\n\n/**\n * Updates the Highcharts version in the applied configuration and checks\n * the cache for the new version.\n *\n * @param {string} newVersion - The new Highcharts version to be applied.\n *\n * @returns {Promise<(object|boolean)>} A Promise resolving to the updated\n * configuration with the new version, or false if no applied configuration\n * exists.\n */\nexport const updateVersion = async (newVersion) => {\n  const options = getOptions();\n  if (options?.highcharts) {\n    options.highcharts.version = newVersion;\n  }\n  await checkAndUpdateCache(options);\n};\n\n/**\n * Checks the cache for Highcharts dependencies, updates the cache if needed,\n * and loads the sources.\n *\n * @param {Object} options - Object containing all options.\n *\n * @returns {Promise<void>} A Promise that resolves once the cache is checked\n * and updated.\n *\n * @throws {ExportError} Throws an ExportError if there is an issue updating\n * or reading the cache.\n */\nexport const checkAndUpdateCache = async (options) => {\n  const { highcharts, server } = options;\n  const cachePath = join(__dirname, highcharts.cachePath);\n\n  let fetchedModules;\n  // Prepare paths to manifest and sources from the .cache folder\n  const manifestPath = join(cachePath, 'manifest.json');\n  const sourcePath = join(cachePath, 'sources.js');\n\n  // Create the cache destination if it doesn't exist already\n  !existsSync(cachePath) && mkdirSync(cachePath);\n\n  // Fetch all the scripts either if manifest.json does not exist\n  // or if the forceFetch option is enabled\n  if (!existsSync(manifestPath) || highcharts.forceFetch) {\n    log(3, '[cache] Fetching and caching Highcharts dependencies.');\n    fetchedModules = await updateCache(highcharts, server.proxy, sourcePath);\n  } else {\n    let requestUpdate = false;\n\n    // Read the manifest JSON\n    const manifest = JSON.parse(readFileSync(manifestPath));\n\n    // Check if the modules is an array, if so, we rewrite it to a map to make\n    // it easier to resolve modules.\n    if (manifest.modules && Array.isArray(manifest.modules)) {\n      const moduleMap = {};\n      manifest.modules.forEach((m) => (moduleMap[m] = 1));\n      manifest.modules = moduleMap;\n    }\n\n    const { coreScripts, moduleScripts, indicatorScripts } = highcharts;\n    const numberOfModules =\n      coreScripts.length + moduleScripts.length + indicatorScripts.length;\n\n    // Compare the loaded highcharts config with the contents in cache.\n    // If there are changes, fetch requested modules and products,\n    // and bake them into a giant blob. Save the blob.\n    if (manifest.version !== highcharts.version) {\n      log(\n        2,\n        '[cache] A Highcharts version mismatch in the cache, need to re-fetch.'\n      );\n      requestUpdate = true;\n    } else if (Object.keys(manifest.modules || {}).length !== numberOfModules) {\n      log(\n        2,\n        '[cache] The cache and the requested modules do not match, need to re-fetch.'\n      );\n      requestUpdate = true;\n    } else {\n      // Check each module, if anything is missing refetch everything\n      requestUpdate = (moduleScripts || []).some((moduleName) => {\n        if (!manifest.modules[moduleName]) {\n          log(\n            2,\n            `[cache] The ${moduleName} is missing in the cache, need to re-fetch.`\n          );\n          return true;\n        }\n      });\n    }\n\n    if (requestUpdate) {\n      fetchedModules = await updateCache(highcharts, server.proxy, sourcePath);\n    } else {\n      log(3, '[cache] Dependency cache is up to date, proceeding.');\n\n      // Load the sources\n      cache.sources = readFileSync(sourcePath, 'utf8');\n\n      // Get current modules map\n      fetchedModules = manifest.modules;\n\n      cache.hcVersion = extractVersion(cache);\n    }\n  }\n\n  // Finally, save the new manifest, which is basically our current config\n  // in a slightly different format\n  await saveConfigToManifest(highcharts, fetchedModules);\n};\n\nexport const getCachePath = () =>\n  join(__dirname, getOptions().highcharts.cachePath);\n\nexport const getCache = () => cache;\n\nexport const highcharts = () => cache.sources;\n\nexport const version = () => cache.hcVersion;\n\nexport default {\n  checkAndUpdateCache,\n  getCachePath,\n  updateVersion,\n  getCache,\n  highcharts,\n  version\n};\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\n/* eslint-disable no-undef */\n\n/**\n * Setting the animObject. Called when initing the page.\n */\nexport function setupHighcharts() {\n  Highcharts.animObject = function () {\n    return { duration: 0 };\n  };\n}\n\n/**\n * Creates the actual chart.\n *\n * @param {object} chartOptions - The options for the Highcharts chart.\n * @param {object} options - The export options.\n * @param {boolean} displayErrors - A flag indicating whether to display errors.\n */\nexport async function triggerExport(chartOptions, options, displayErrors) {\n  // Display errors flag taken from chart options nad debugger module\n  window._displayErrors = displayErrors;\n\n  // Get required functions\n  const { getOptions, merge, setOptions, wrap } = Highcharts;\n\n  // Create a separate object for a potential setOptions usages in order to\n  // prevent from polluting other exports that can happen on the same page\n  Highcharts.setOptionsObj = merge(false, {}, getOptions());\n\n  // By default animation is disabled\n  const chart = {\n    animation: false\n  };\n\n  // When straight inject, the size is set through CSS only\n  if (options.export.strInj) {\n    chart.height = chartOptions.chart.height;\n    chart.width = chartOptions.chart.width;\n  }\n\n  // NOTE: Is this used for anything useful?\n  window.isRenderComplete = false;\n  wrap(Highcharts.Chart.prototype, 'init', function (proceed, userOptions, cb) {\n    // Override userOptions with image friendly options\n    userOptions = merge(userOptions, {\n      exporting: {\n        enabled: false\n      },\n      plotOptions: {\n        series: {\n          label: {\n            enabled: false\n          }\n        }\n      },\n      /* Expects tooltip in userOptions when forExport is true.\n        https://github.com/highcharts/highcharts/blob/3ad430a353b8056b9e764aa4e5cd6828aa479db2/js/parts/Chart.js#L241\n        */\n      tooltip: {}\n    });\n\n    (userOptions.series || []).forEach(function (series) {\n      series.animation = false;\n    });\n\n    // Add flag to know if chart render has been called.\n    if (!window.onHighchartsRender) {\n      window.onHighchartsRender = Highcharts.addEvent(this, 'render', () => {\n        window.isRenderComplete = true;\n      });\n    }\n\n    proceed.apply(this, [userOptions, cb]);\n  });\n\n  wrap(Highcharts.Series.prototype, 'init', function (proceed, chart, options) {\n    proceed.apply(this, [chart, options]);\n  });\n\n  // Get the user options\n  const userOptions = options.export.strInj\n    ? new Function(`return ${options.export.strInj}`)()\n    : chartOptions;\n\n  // Trigger custom code\n  if (options.customLogic.customCode) {\n    new Function('options', options.customLogic.customCode)(userOptions);\n  }\n\n  // Merge the globalOptions, themeOptions, options from the wrapped\n  // setOptions function and user options to create the final options object\n  const finalOptions = merge(\n    false,\n    JSON.parse(options.export.themeOptions),\n    userOptions,\n    // Placed it here instead in the init because of the size issues\n    { chart }\n  );\n\n  const finalCallback = options.customLogic.callback\n    ? new Function(`return ${options.customLogic.callback}`)()\n    : undefined;\n\n  // Set the global options if exist\n  const globalOptions = JSON.parse(options.export.globalOptions);\n  if (globalOptions) {\n    setOptions(globalOptions);\n  }\n\n  let constr = options.export.constr || 'chart';\n  constr = typeof Highcharts[constr] !== 'undefined' ? constr : 'chart';\n\n  Highcharts[constr]('container', finalOptions, finalCallback);\n\n  // Get the current global options\n  const defaultOptions = getOptions();\n\n  // Clear it just in case (e.g. the setOptions was used in the customCode)\n  for (const prop in defaultOptions) {\n    if (typeof defaultOptions[prop] !== 'function') {\n      delete defaultOptions[prop];\n    }\n  }\n\n  // Set the default options back\n  setOptions(Highcharts.setOptionsObj);\n\n  // Empty the custom global options object\n  Highcharts.setOptionsObj = {};\n}\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { readFileSync } from 'fs';\nimport path from 'path';\n\nimport puppeteer from 'puppeteer';\n\nimport { getCachePath } from './cache.js';\nimport { getOptions } from './config.js';\nimport { setupHighcharts } from './highcharts.js';\nimport { log, logWithStack } from './logger.js';\nimport { __dirname } from './utils.js';\n\nimport ExportError from './errors/ExportError.js';\n\n// Get the template for the page\nconst template = readFileSync(__dirname + '/templates/template.html', 'utf8');\n\nlet browser;\n\n/**\n * Retrieves the existing Puppeteer browser instance.\n *\n * @returns {Promise<object>} A Promise resolving to the Puppeteer browser\n * instance.\n *\n * @throws {ExportError} Throws an ExportError if no valid browser has been\n * created.\n */\nexport function get() {\n  if (!browser) {\n    throw new ExportError('[browser] No valid browser has been created.');\n  }\n  return browser;\n}\n\n/**\n * Creates a Puppeteer browser instance with the specified arguments.\n *\n * @param {Array} puppeteerArgs - Additional arguments for Puppeteer launch.\n *\n * @returns {Promise<object>} A Promise resolving to the Puppeteer browser\n * instance.\n *\n * @throws {ExportError} Throws an ExportError if max retries to open a browser\n * instance are reached, or if no browser instance is found after retries.\n */\nexport async function create(puppeteerArgs) {\n  // Get debug and other options\n  const { debug, other } = getOptions();\n\n  // Get the debug options\n  const { enable: enabledDebug, ...debugOptions } = debug;\n\n  const launchOptions = {\n    headless: other.browserShellMode ? 'shell' : true,\n    userDataDir: './tmp/',\n    args: puppeteerArgs,\n    handleSIGINT: false,\n    handleSIGTERM: false,\n    handleSIGHUP: false,\n    waitForInitialPage: false,\n    defaultViewport: null,\n    ...(enabledDebug && debugOptions)\n  };\n\n  // Create a browser\n  if (!browser) {\n    let tryCount = 0;\n\n    const open = async () => {\n      try {\n        log(\n          3,\n          `[browser] Attempting to get a browser instance (try ${++tryCount}).`\n        );\n        browser = await puppeteer.launch(launchOptions);\n      } catch (error) {\n        logWithStack(\n          1,\n          error,\n          '[browser] Failed to launch a browser instance.'\n        );\n\n        // Retry to launch browser until reaching max attempts\n        if (tryCount < 25) {\n          log(3, `[browser] Retry to open a browser (${tryCount} out of 25).`);\n          await new Promise((response) => setTimeout(response, 4000));\n          await open();\n        } else {\n          throw error;\n        }\n      }\n    };\n\n    try {\n      await open();\n\n      // Shell mode inform\n      if (launchOptions.headless === 'shell') {\n        log(3, `[browser] Launched browser in shell mode.`);\n      }\n\n      // Debug mode inform\n      if (enabledDebug) {\n        log(3, `[browser] Launched browser in debug mode.`);\n      }\n    } catch (error) {\n      throw new ExportError(\n        '[browser] Maximum retries to open a browser instance reached.'\n      ).setError(error);\n    }\n\n    if (!browser) {\n      throw new ExportError('[browser] Cannot find a browser to open.');\n    }\n  }\n\n  // Return a browser promise\n  return browser;\n}\n\n/**\n * Closes the Puppeteer browser instance if it is connected.\n *\n * @returns {Promise<boolean>} A Promise resolving to true after the browser\n * is closed.\n */\nexport async function close() {\n  // Close the browser when connnected\n  if (browser?.connected) {\n    await browser.close();\n  }\n  log(4, '[browser] Closed the browser.');\n}\n\n/**\n * Creates a new Puppeteer Page within an existing browser instance.\n *\n * If the browser instance is not available, returns false.\n *\n * The function creates a new page, disables caching, sets content using\n * setPageContent(), and returns the created Puppeteer Page.\n *\n * @returns {(boolean|object)} Returns false if the browser instance is not\n * available, or a Puppeteer Page object representing the newly created page.\n */\nexport async function newPage() {\n  if (!browser) {\n    return false;\n  }\n\n  // Create a page\n  const page = await browser.newPage();\n\n  // Disable cache\n  await page.setCacheEnabled(false);\n\n  // Set the content\n  await setPageContent(page);\n\n  // Set page events\n  setPageEvents(page);\n\n  return page;\n}\n\n/**\n * Clears the content of a Puppeteer Page based on the specified mode.\n *\n * @param {Object} page - The Puppeteer Page object to be cleared.\n * @param {boolean} hardReset - A flag indicating the type of clearing\n * to be performed. If true, navigates to 'about:blank' and resets content\n * and scripts. If false, clears the body content by setting a predefined HTML\n * structure.\n *\n * @throws {Error} Logs thrown error if clearing the page content fails.\n */\nexport async function clearPage(page, hardReset = false) {\n  try {\n    if (page && !page.isClosed()) {\n      if (hardReset) {\n        // Navigate to about:blank\n        await page.goto('about:blank', { waitUntil: 'domcontentloaded' });\n\n        // Set the content and and scripts again\n        await setPageContent(page);\n      } else {\n        // Clear body content\n        await page.evaluate(() => {\n          document.body.innerHTML =\n            '<div id=\"chart-container\"><div id=\"container\"></div></div>';\n        });\n      }\n      return true;\n    }\n  } catch (error) {\n    logWithStack(\n      2,\n      error,\n      '[browser] Could not clear the content of the page.'\n    );\n  }\n\n  return false;\n}\n\n/**\n * Adds custom JS and CSS resources to a Puppeteer Page based on the specified\n * options.\n *\n * @param {Object} page - The Puppeteer Page object to which resources will be\n * added.\n * @param {Object} options - All options and configuration.\n *\n * @returns {Promise<Array<Object>>} - Promise resolving to an array of injected\n * resources.\n */\nexport async function addPageResources(page, options) {\n  // Injected resources array\n  const injectedResources = [];\n\n  // Use resources\n  const resources = options.customLogic.resources;\n  if (resources) {\n    const injectedJs = [];\n\n    // Load custom JS code\n    if (resources.js) {\n      injectedJs.push({\n        content: resources.js\n      });\n    }\n\n    // Load scripts from all custom files\n    if (resources.files) {\n      for (const file of resources.files) {\n        const isLocal = !file.startsWith('http') ? true : false;\n\n        // Add each custom script from resources' files\n        injectedJs.push(\n          isLocal\n            ? {\n                content: readFileSync(file, 'utf8')\n              }\n            : {\n                url: file\n              }\n        );\n      }\n    }\n\n    for (const jsResource of injectedJs) {\n      try {\n        injectedResources.push(await page.addScriptTag(jsResource));\n      } catch (error) {\n        logWithStack(2, error, `[export] The JS resource cannot be loaded.`);\n      }\n    }\n    injectedJs.length = 0;\n\n    // Load CSS\n    const injectedCss = [];\n    if (resources.css) {\n      let cssImports = resources.css.match(/@import\\s*([^;]*);/g);\n      if (cssImports) {\n        // Handle css section\n        for (let cssImportPath of cssImports) {\n          if (cssImportPath) {\n            cssImportPath = cssImportPath\n              .replace('url(', '')\n              .replace('@import', '')\n              .replace(/\"/g, '')\n              .replace(/'/g, '')\n              .replace(/;/, '')\n              .replace(/\\)/g, '')\n              .trim();\n\n            // Add each custom css from resources\n            if (cssImportPath.startsWith('http')) {\n              injectedCss.push({\n                url: cssImportPath\n              });\n            } else if (options.customLogic.allowFileResources) {\n              injectedCss.push({\n                path: path.join(__dirname, cssImportPath)\n              });\n            }\n          }\n        }\n      }\n\n      // The rest of the CSS section will be content by now\n      injectedCss.push({\n        content: resources.css.replace(/@import\\s*([^;]*);/g, '') || ' '\n      });\n\n      for (const cssResource of injectedCss) {\n        try {\n          injectedResources.push(await page.addStyleTag(cssResource));\n        } catch (error) {\n          logWithStack(2, error, `[export] The CSS resource cannot be loaded.`);\n        }\n      }\n      injectedCss.length = 0;\n    }\n  }\n  return injectedResources;\n}\n\n/**\n * Clears out all state set on the page with addScriptTag/addStyleTag. Removes\n * injected resources and resets CSS and script tags on the page. Additionally,\n * it destroys previously existing charts.\n *\n * @param {Object} page - The Puppeteer Page object from which resources will\n * be cleared.\n * @param {Array<Object>} injectedResources - Array of injected resources\n * to be cleared.\n */\nexport async function clearPageResources(page, injectedResources) {\n  for (const resource of injectedResources) {\n    await resource.dispose();\n  }\n\n  // Destroy old charts after export is done and reset all CSS and script tags\n  await page.evaluate(() => {\n    // We are not guaranteed that Highcharts is loaded, e,g, when doing SVG\n    // exports\n    if (typeof Highcharts !== 'undefined') {\n      // eslint-disable-next-line no-undef\n      const oldCharts = Highcharts.charts;\n\n      // Check in any already existing charts\n      if (Array.isArray(oldCharts) && oldCharts.length) {\n        // Destroy old charts\n        for (const oldChart of oldCharts) {\n          oldChart && oldChart.destroy();\n          // eslint-disable-next-line no-undef\n          Highcharts.charts.shift();\n        }\n      }\n    }\n\n    // eslint-disable-next-line no-undef\n    const [...scriptsToRemove] = document.getElementsByTagName('script');\n    // eslint-disable-next-line no-undef\n    const [, ...stylesToRemove] = document.getElementsByTagName('style');\n    // eslint-disable-next-line no-undef\n    const [...linksToRemove] = document.getElementsByTagName('link');\n\n    // Remove tags\n    for (const element of [\n      ...scriptsToRemove,\n      ...stylesToRemove,\n      ...linksToRemove\n    ]) {\n      element.remove();\n    }\n  });\n}\n\n/**\n * Sets the content for a Puppeteer Page using a predefined template\n * and additional scripts. Also, sets the pageerror in order to catch\n * and display errors from the window context.\n *\n * @param {Object} page - The Puppeteer Page object for which the content\n * is being set.\n */\nasync function setPageContent(page) {\n  await page.setContent(template, { waitUntil: 'domcontentloaded' });\n\n  // Add all registered Higcharts scripts, quite demanding\n  await page.addScriptTag({ path: `${getCachePath()}/sources.js` });\n\n  // Set the initial animObject\n  await page.evaluate(setupHighcharts);\n}\n\n/**\n * Set events for a Puppeteer Page.\n *\n * @param {Object} page - The Puppeteer Page object to set events to.\n */\nfunction setPageEvents(page) {\n  // Get debug options\n  const { debug } = getOptions();\n\n  // Set the console listener, if needed\n  if (debug.enable && debug.listenToConsole) {\n    page.on('console', (message) => {\n      console.log(`[debug] ${message.text()}`);\n    });\n  }\n\n  // Set the pageerror listener\n  page.on('pageerror', async (error) => {\n    // It would seem like this may fire at the same time or shortly before\n    // a page is closed.\n    if (page.isClosed()) {\n      return;\n    }\n\n    // TODO: Consider adding a switch here that turns on log(0) logging\n    // on page errors.\n    await page.$eval(\n      '#container',\n      (element, errorMessage) => {\n        // eslint-disable-next-line no-undef\n        if (window._displayErrors) {\n          element.innerHTML = errorMessage;\n        }\n      },\n      `<h1>Chart input data error: </h1>${error.toString()}`\n    );\n  });\n}\n\nexport default {\n  get,\n  create,\n  close,\n  newPage,\n  clearPage,\n  addPageResources,\n  clearPageResources\n};\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { addPageResources, clearPageResources } from './browser.js';\nimport { getCache } from './cache.js';\nimport { triggerExport } from './highcharts.js';\nimport { log } from './logger.js';\n\nimport svgTemplate from './../templates/svg_export/svg_export.js';\n\nimport ExportError from './errors/ExportError.js';\n\n/**\n * Retrieves the clipping region coordinates of the specified page element with\n * the id 'chart-container'.\n *\n * @param {Object} page - Puppeteer page object.\n *\n * @returns {Promise<Object>} Promise resolving to an object containing\n * x, y, width, and height properties.\n */\nconst getClipRegion = (page) =>\n  page.$eval('#chart-container', (element) => {\n    const { x, y, width, height } = element.getBoundingClientRect();\n    return {\n      x,\n      y,\n      width,\n      height: Math.trunc(height > 1 ? height : 500)\n    };\n  });\n\n/**\n * Creates an image using Puppeteer's page screenshot functionality with\n * specified options.\n *\n * @param {Object} page - Puppeteer page object.\n * @param {string} type - Image type.\n * @param {string} encoding - Image encoding.\n * @param {Object} clip - Clipping region coordinates.\n * @param {number} rasterizationTimeout - Timeout for rasterization\n * in milliseconds.\n *\n * @returns {Promise<Buffer>} Promise resolving to the image buffer or rejecting\n * with an ExportError for timeout.\n */\nconst createImage = (page, type, encoding, clip, rasterizationTimeout) =>\n  Promise.race([\n    page.screenshot({\n      type,\n      encoding,\n      clip,\n      captureBeyondViewport: true,\n      fullPage: false,\n      optimizeForSpeed: true,\n      ...(type !== 'png' ? { quality: 80 } : {}),\n\n      // #447, #463 - always render on a transparent page if the expected type\n      // format is PNG\n      omitBackground: type == 'png'\n    }),\n    new Promise((_resolve, reject) =>\n      setTimeout(\n        () => reject(new ExportError('Rasterization timeout')),\n        rasterizationTimeout || 1500\n      )\n    )\n  ]);\n\n/**\n * Creates a PDF using Puppeteer's page pdf functionality with specified\n * options.\n *\n * @param {Object} page - Puppeteer page object.\n * @param {number} height - PDF height.\n * @param {number} width - PDF width.\n * @param {string} encoding - PDF encoding.\n *\n * @returns {Promise<Buffer>} Promise resolving to the PDF buffer.\n */\nconst createPDF = async (\n  page,\n  height,\n  width,\n  encoding,\n  rasterizationTimeout\n) => {\n  await page.emulateMediaType('screen');\n\n  return page.pdf({\n    // This will remove an extra empty page in PDF exports\n    height: height + 1,\n    width,\n    encoding,\n    timeout: rasterizationTimeout || 1500\n  });\n};\n\n/**\n * Creates an SVG string by evaluating the outerHTML of the first 'svg' element\n * inside an element with the id 'container'.\n *\n * @param {Object} page - Puppeteer page object.\n *\n * @returns {Promise<string>} Promise resolving to the SVG string.\n */\nconst createSVG = (page) =>\n  page.$eval('#container svg:first-of-type', (element) => element.outerHTML);\n\n/**\n * Sets the specified chart and options as configuration into the triggerExport\n * function within the window context using page.evaluate.\n *\n * @param {Object} page - Puppeteer page object.\n * @param {any} chart - The chart object to be configured.\n * @param {Object} options - Configuration options for the chart.\n *\n * @returns {Promise<void>} Promise resolving after the configuration is set.\n */\nconst setAsConfig = async (page, chart, options, displayErrors) =>\n  page.evaluate(triggerExport, chart, options, displayErrors);\n\n/**\n * Exports to a chart from a page using Puppeteer.\n *\n * @param {Object} page - Puppeteer page object.\n * @param {any} chart - The chart object or SVG configuration to be exported.\n * @param {Object} options - Export options and configuration.\n *\n * @returns {Promise<string | Buffer | ExportError>} Promise resolving to\n * the exported data or rejecting with an ExportError.\n */\nexport default async (page, chart, options) => {\n  // Injected resources array (additional JS and CSS)\n  let injectedResources = [];\n\n  try {\n    log(4, '[export] Determining export path.');\n\n    const exportOptions = options.export;\n\n    // Decide whether display error or debbuger wrapper around it\n    const displayErrors =\n      exportOptions?.options?.chart?.displayErrors &&\n      getCache().activeManifest.modules.debugger;\n\n    let isSVG;\n    if (\n      chart.indexOf &&\n      (chart.indexOf('<svg') >= 0 || chart.indexOf('<?xml') >= 0)\n    ) {\n      // SVG input handling\n      log(4, '[export] Treating as SVG.');\n\n      // If input is also SVG, just return it\n      if (exportOptions.type === 'svg') {\n        return chart;\n      }\n\n      isSVG = true;\n      await page.setContent(svgTemplate(chart), {\n        waitUntil: 'domcontentloaded'\n      });\n    } else {\n      // JSON config handling\n      log(4, '[export] Treating as config.');\n\n      // Need to perform straight inject\n      if (exportOptions.strInj) {\n        // Injection based configuration export\n        await setAsConfig(\n          page,\n          {\n            chart: {\n              height: exportOptions.height,\n              width: exportOptions.width\n            }\n          },\n          options,\n          displayErrors\n        );\n      } else {\n        // Basic configuration export\n        chart.chart.height = exportOptions.height;\n        chart.chart.width = exportOptions.width;\n\n        await setAsConfig(page, chart, options, displayErrors);\n      }\n    }\n\n    // Keeps track of all resources added on the page with addXXXTag. etc\n    // It's VITAL that all added resources ends up here so we can clear things\n    // out when doing a new export in the same page!\n    injectedResources = await addPageResources(page, options);\n\n    // Get the real chart size and set the zoom accordingly\n    const size = isSVG\n      ? await page.evaluate((scale) => {\n          const svgElement = document.querySelector(\n            '#chart-container svg:first-of-type'\n          );\n\n          // Get the values correctly scaled\n          const chartHeight = svgElement.height.baseVal.value * scale;\n          const chartWidth = svgElement.width.baseVal.value * scale;\n\n          // In case of SVG the zoom must be set directly for body\n          // Set the zoom as scale\n          // eslint-disable-next-line no-undef\n          document.body.style.zoom = scale;\n\n          // Set the margin to 0px\n          // eslint-disable-next-line no-undef\n          document.body.style.margin = '0px';\n\n          return {\n            chartHeight,\n            chartWidth\n          };\n        }, parseFloat(exportOptions.scale))\n      : await page.evaluate(() => {\n          // eslint-disable-next-line no-undef\n          const { chartHeight, chartWidth } = window.Highcharts.charts[0];\n\n          // No need for such scale manipulation in case of other types of exports\n          // Reset the zoom for other exports than to SVGs\n          // eslint-disable-next-line no-undef\n          document.body.style.zoom = 1;\n\n          return {\n            chartHeight,\n            chartWidth\n          };\n        });\n\n    // Set final height and width for viewport\n    const viewportHeight = Math.abs(\n      Math.ceil(size.chartHeight || exportOptions.height)\n    );\n    const viewportWidth = Math.abs(\n      Math.ceil(size.chartWidth || exportOptions.width)\n    );\n\n    // Get the clip region for the page\n    const { x, y } = await getClipRegion(page);\n\n    // Set the final viewport now that we have the real height\n    await page.setViewport({\n      height: viewportHeight,\n      width: viewportWidth,\n      deviceScaleFactor: isSVG ? 1 : parseFloat(exportOptions.scale)\n    });\n\n    let data;\n    // Rasterization process\n    if (exportOptions.type === 'svg') {\n      // SVG\n      data = await createSVG(page);\n    } else if (['png', 'jpeg'].includes(exportOptions.type)) {\n      // PNG or JPEG\n      data = await createImage(\n        page,\n        exportOptions.type,\n        'base64',\n        {\n          width: viewportWidth,\n          height: viewportHeight,\n          x,\n          y\n        },\n        exportOptions.rasterizationTimeout\n      );\n    } else if (exportOptions.type === 'pdf') {\n      // PDF\n      data = await createPDF(\n        page,\n        viewportHeight,\n        viewportWidth,\n        'base64',\n        exportOptions.rasterizationTimeout\n      );\n    } else {\n      throw new ExportError(\n        `[export] Unsupported output format ${exportOptions.type}.`\n      );\n    }\n\n    // Clear previously injected JS and CSS resources\n    await clearPageResources(page, injectedResources);\n    return data;\n  } catch (error) {\n    await clearPageResources(page, injectedResources);\n    return error;\n  }\n};\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport cssTemplate from './css.js';\n\nexport default (chart) => `\n<!DOCTYPE html>\n<html lang='en-US'>\n  <head>\n    <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\n    <title>Highcharts Export</title>\n  </head>\n  <style>\n    ${cssTemplate()}\n  </style>\n  <body>\n    <div id=\"chart-container\">\n      ${chart}\n    </div>\n  </body>\n</html>\n\n`;\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { Pool } from 'tarn';\nimport { v4 as uuid } from 'uuid';\n\nimport {\n  create as createBrowser,\n  close as closeBrowser,\n  newPage,\n  clearPage\n} from './browser.js';\nimport puppeteerExport from './export.js';\nimport { log, logWithStack } from './logger.js';\nimport { measureTime } from './utils.js';\n\nimport ExportError from './errors/ExportError.js';\n\n// The pool instance\nlet pool = false;\n\n// Pool statistics\nexport const stats = {\n  performedExports: 0,\n  exportAttempts: 0,\n  exportFromSvgAttempts: 0,\n  timeSpent: 0,\n  droppedExports: 0,\n  spentAverage: 0\n};\n\nlet poolConfig = {};\n\nconst factory = {\n  /**\n   * Creates a new worker page for the export pool.\n   *\n   * @returns {Object} - An object containing the worker ID, a reference to the\n   * browser page, and initial work count.\n   *\n   * @throws {ExportError} - If there's an error during the creation of the new\n   * page.\n   */\n  create: async () => {\n    let page = false;\n\n    const id = uuid();\n    const startDate = new Date().getTime();\n\n    try {\n      page = await newPage();\n\n      if (!page || page.isClosed()) {\n        throw new ExportError('The page is invalid or closed.');\n      }\n\n      log(\n        3,\n        `[pool] Successfully created a worker ${id} - took ${\n          new Date().getTime() - startDate\n        } ms.`\n      );\n    } catch (error) {\n      throw new ExportError(\n        'Error encountered when creating a new page.'\n      ).setError(error);\n    }\n\n    return {\n      id,\n      page,\n      // Try to distribute the initial work count\n      workCount: Math.round(Math.random() * (poolConfig.workLimit / 2))\n    };\n  },\n\n  /**\n   * Validates a worker page in the export pool, checking if it has exceeded\n   * the work limit.\n   *\n   * @param {Object} workerHandle - The handle to the worker, containing the\n   * worker's ID, a reference to the browser page, and work count.\n   *\n   * @returns {boolean} - Returns true if the worker is valid and within\n   * the work limit; otherwise, returns false.\n   */\n  validate: async (workerHandle) => {\n    // NOTE: In certain cases acquiring throws a TargetCloseError, which may\n    //       be caused by two things:\n    //         - The page is closed and attempted to be reused.\n    //         - Lost contact with the browser\n    //       What we're seeing in logs is that successive exports typically\n    //       succeeds, and the server recovers, indicating that it's likely\n    //       the first case. This is an attempt at allievating the issue by\n    //       simply not validating the worker if the page is null or closed.\n    //\n    //       The actual result from when this happened, was that a worker would\n    //       be completely locked, stopping it from being acquired until\n    //       its work count reached the limit.\n    if (!workerHandle.page || workerHandle.page?.isClosed()) {\n      return false;\n    }\n\n    if (\n      poolConfig.workLimit &&\n      ++workerHandle.workCount > poolConfig.workLimit\n    ) {\n      log(\n        3,\n        `[pool] Worker failed validation: exceeded work limit (limit is ${poolConfig.workLimit}).`\n      );\n      return false;\n    }\n    return true;\n  },\n\n  /**\n   * Destroys a worker entry in the export pool, closing its associated page.\n   *\n   * @param {Object} workerHandle - The handle to the worker, containing\n   * the worker's ID and a reference to the browser page.\n   */\n  destroy: async (workerHandle) => {\n    log(3, `[pool] Destroying pool entry ${workerHandle.id}.`);\n\n    if (workerHandle.page && !workerHandle.page.isClosed()) {\n      await workerHandle.page.close();\n    }\n  }\n\n  // log: (message, level) => log(1, '[tarn] ' +  message)\n};\n\n/**\n * Initializes the export pool with the provided configuration, creating\n * a browser instance and setting up worker resources.\n *\n * @param {Object} config - Configuration options for the export pool along\n * with custom puppeteer arguments for the puppeteer.launch function.\n */\nexport const initPool = async (config) => {\n  // For the module scope usage\n  poolConfig = config && config.pool ? { ...config.pool } : {};\n\n  // Create a browser instance with the puppeteer arguments\n  await createBrowser(config.puppeteerArgs);\n\n  log(\n    3,\n    `[pool] Initializing pool with workers: min ${poolConfig.minWorkers}, max ${poolConfig.maxWorkers}.`\n  );\n\n  if (pool) {\n    return log(\n      4,\n      '[pool] Already initialized, please kill it before creating a new one.'\n    );\n  }\n\n  if (parseInt(poolConfig.minWorkers) > parseInt(poolConfig.maxWorkers)) {\n    poolConfig.minWorkers = poolConfig.maxWorkers;\n  }\n\n  try {\n    // Create a pool along with a minimal number of resources\n    pool = new Pool({\n      // Get the create/validate/destroy/log functions\n      ...factory,\n      min: parseInt(poolConfig.minWorkers),\n      max: parseInt(poolConfig.maxWorkers),\n      acquireTimeoutMillis: poolConfig.acquireTimeout,\n      createTimeoutMillis: poolConfig.createTimeout,\n      destroyTimeoutMillis: poolConfig.destroyTimeout,\n      idleTimeoutMillis: poolConfig.idleTimeout,\n      createRetryIntervalMillis: poolConfig.createRetryInterval,\n      reapIntervalMillis: poolConfig.reaperInterval,\n      propagateCreateError: false\n    });\n\n    // Set events\n    pool.on('release', async (resource) => {\n      // Clear page\n      const r = await clearPage(resource.page, false);\n      log(\n        4,\n        `[pool] Releasing a worker with ID ${resource.id}. Clear page status: ${r}.`\n      );\n    });\n\n    pool.on('destroySuccess', (eventId, resource) => {\n      log(4, `[pool] Destroyed a worker with ID ${resource.id}.`);\n      resource.page = null;\n    });\n\n    const initialResources = [];\n    // Create an initial number of resources\n    for (let i = 0; i < poolConfig.minWorkers; i++) {\n      try {\n        const resource = await pool.acquire().promise;\n        initialResources.push(resource);\n      } catch (error) {\n        logWithStack(2, error, '[pool] Could not create an initial resource.');\n      }\n    }\n\n    // Release the initial number of resources back to the pool\n    initialResources.forEach((resource) => {\n      pool.release(resource);\n    });\n\n    log(\n      3,\n      `[pool] The pool is ready${initialResources.length ? ` with ${initialResources.length} initial resources waiting.` : '.'}`\n    );\n  } catch (error) {\n    throw new ExportError(\n      '[pool] Could not create the pool of workers.'\n    ).setError(error);\n  }\n};\n\n/**\n * Kills all workers in the pool, destroys the pool, and closes the browser\n * instance.\n *\n * @returns {Promise<void>} A promise that resolves after the workers are\n * killed, the pool is destroyed, and the browser is closed.\n */\nexport async function killPool() {\n  log(3, '[pool] Killing pool with all workers and closing browser.');\n\n  // If still alive, destroy the pool of pages before closing a browser\n  if (pool) {\n    // Free up not released workers\n    for (const worker of pool.used) {\n      pool.release(worker.resource);\n    }\n\n    // Destroy the pool if it is still available\n    if (!pool.destroyed) {\n      await pool.destroy();\n      log(4, '[browser] Destroyed the pool of resources.');\n    }\n  }\n\n  // Close the browser instance\n  await closeBrowser();\n}\n\n/**\n * Processes the export work using a worker from the pool. Acquires a worker\n * handle from the pool, performs the export using puppeteer, and releases\n * the worker handle back to the pool.\n *\n * @param {string} chart - The chart data or configuration to be exported.\n * @param {Object} options - Export options and configuration.\n *\n * @returns {Promise<Object>} A promise that resolves with the export resultand\n * options.\n *\n * @throws {ExportError} If an error occurs during the export process.\n */\nexport const postWork = async (chart, options) => {\n  let workerHandle;\n\n  try {\n    log(4, '[pool] Work received, starting to process.');\n\n    ++stats.exportAttempts;\n    if (poolConfig.benchmarking) {\n      getPoolInfo();\n    }\n\n    if (!pool) {\n      throw new ExportError('Work received, but pool has not been started.');\n    }\n\n    // Acquire the worker along with the id of resource and work count\n    const acquireCounter = measureTime();\n    try {\n      log(4, '[pool] Acquiring a worker handle.');\n      workerHandle = await pool.acquire().promise;\n\n      // Check the page acquire time\n      if (options.server.benchmarking) {\n        log(\n          5,\n          options.payload?.requestId\n            ? `[benchmark] Request with ID ${options.payload?.requestId} -`\n            : '[benchmark]',\n          `Acquired a worker handle: ${acquireCounter()}ms.`\n        );\n      }\n    } catch (error) {\n      throw new ExportError(\n        (options.payload?.requestId\n          ? `For request with ID ${options.payload?.requestId} - `\n          : '') +\n          `Error encountered when acquiring an available entry: ${acquireCounter()}ms.`\n      ).setError(error);\n    }\n    log(4, '[pool] Acquired a worker handle.');\n\n    if (!workerHandle.page) {\n      throw new ExportError(\n        'Resolved worker page is invalid: the pool setup is wonky.'\n      );\n    }\n\n    // Save the start time\n    let workStart = new Date().getTime();\n\n    log(4, `[pool] Starting work on pool entry with ID ${workerHandle.id}.`);\n\n    // Perform an export on a puppeteer level\n    const exportCounter = measureTime();\n    const result = await puppeteerExport(workerHandle.page, chart, options);\n\n    // Check if it's an error\n    if (result instanceof Error) {\n      // NOTE: If there's a rasterization timeout, we want need to flush the page.\n      //       This is because the page may be in a state where it's waiting for\n      //       the screenshot to finish even though the timeout has occured.\n      //       Which of course causes a lot of issues with the event system,\n      //       and page consistency.\n      //\n      // NOTE: Only page.screenshot will throw this, timeouts for PDF's are\n      //       handled by the page.pdf function itself.\n      //\n      //       ...yes, this is ugly.\n      if (result.message === 'Rasterization timeout') {\n        workerHandle.workCount = poolConfig.workLimit + 1;\n        workerHandle.page = null;\n      }\n\n      if (\n        result.name === 'TimeoutError' ||\n        result.message === 'Rasterization timeout'\n      ) {\n        throw new ExportError(\n          'Rasterization timeout: your chart may be too complex or large, and failed to render within the allotted time.'\n        ).setError(result);\n      } else {\n        throw new ExportError(\n          (options.payload?.requestId\n            ? `For request with ID ${options.payload?.requestId} - `\n            : '') + `Error encountered during export: ${exportCounter()}ms.`\n        ).setError(result);\n      }\n    }\n\n    // Check the Puppeteer export time\n    if (options.server.benchmarking) {\n      log(\n        5,\n        options.payload?.requestId\n          ? `[benchmark] Request with ID ${options.payload?.requestId} -`\n          : '[benchmark]',\n        `Exported a chart sucessfully: ${exportCounter()}ms.`\n      );\n    }\n\n    // Release the resource back to the pool\n    pool.release(workerHandle);\n\n    // Used for statistics in averageTime and processedWorkCount, which\n    // in turn is used by the /health route.\n    const workEnd = new Date().getTime();\n    const exportTime = workEnd - workStart;\n    stats.timeSpent += exportTime;\n    stats.spentAverage = stats.timeSpent / ++stats.performedExports;\n\n    log(4, `[pool] Work completed in ${exportTime} ms.`);\n\n    // Otherwise return the result\n    return {\n      result,\n      options\n    };\n  } catch (error) {\n    ++stats.droppedExports;\n\n    if (workerHandle) {\n      pool.release(workerHandle);\n    }\n\n    throw new ExportError(`[pool] In pool.postWork: ${error.message}`).setError(\n      error\n    );\n  }\n};\n\n/**\n * Retrieves the current pool instance.\n *\n * @returns {Object|null} The current pool instance if initialized, or null\n * if the pool has not been created.\n */\nexport const getPool = () => pool;\n\n/**\n * Retrieves pool information in JSON format, including minimum and maximum\n * workers, available workers, workers in use, and pending acquire requests.\n *\n * @returns {Object} Pool information in JSON format.\n */\nexport const getPoolInfoJSON = () => ({\n  min: pool.min,\n  max: pool.max,\n  all: pool.numFree() + pool.numUsed(),\n  available: pool.numFree(),\n  used: pool.numUsed(),\n  pending: pool.numPendingAcquires()\n});\n\n/**\n * Logs information about the current state of the pool, including the minimum\n * and maximum workers, available workers, workers in use, and pending acquire\n * requests.\n */\nexport function getPoolInfo() {\n  const { min, max, all, available, used, pending } = getPoolInfoJSON();\n\n  log(5, `[pool] The minimum number of resources allowed by pool: ${min}.`);\n  log(5, `[pool] The maximum number of resources allowed by pool: ${max}.`);\n  log(5, `[pool] The number of all created resources: ${all}.`);\n  log(5, `[pool] The number of available resources: ${available}.`);\n  log(5, `[pool] The number of acquired resources: ${used}.`);\n  log(5, `[pool] The number of resources waiting to be acquired: ${pending}.`);\n}\n\nexport default {\n  initPool,\n  killPool,\n  postWork,\n  getPool,\n  getPoolInfo,\n  getPoolInfoJSON,\n  getStats: () => stats\n};\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { readFileSync, writeFileSync } from 'fs';\n\nimport { getOptions, initExportSettings } from './config.js';\nimport { log, logWithStack } from './logger.js';\nimport { killPool, postWork, stats } from './pool.js';\nimport {\n  fixType,\n  handleResources,\n  isCorrectJSON,\n  optionsStringify,\n  roundNumber,\n  toBoolean,\n  wrapAround\n} from './utils.js';\nimport { sanitize } from './sanitize.js';\nimport ExportError from './errors/ExportError.js';\n\nlet allowCodeExecution = false;\n\n/**\n * Starts an export process. The `settings` contains final options gathered\n * from all possible sources (config, env, cli, json). The `endCallback` is\n * called when the export is completed, with an error object as the first\n * argument and the second containing the base64 respresentation of a chart.\n *\n * @param {Object} settings - The settings object containing export\n * configuration.\n * @param {function} endCallback - The callback function to be invoked upon\n * finalizing work or upon error occurance of the exporting process.\n *\n * @returns {void} This function does not return a value directly; instead,\n * it communicates results via the endCallback.\n */\nexport const startExport = async (settings, endCallback) => {\n  // Starting exporting process message\n  log(4, '[chart] Starting the exporting process.');\n\n  // Initialize options\n  const options = initExportSettings(settings, getOptions());\n\n  // Get the export options\n  const exportOptions = options.export;\n\n  // If SVG is an input (argument can be sent only by the request)\n  if (options.payload?.svg && options.payload.svg !== '') {\n    try {\n      log(4, '[chart] Attempting to export from a SVG input.');\n\n      const result = exportAsString(\n        sanitize(options.payload.svg), // #209\n        options,\n        endCallback\n      );\n\n      ++stats.exportFromSvgAttempts;\n      return result;\n    } catch (error) {\n      return endCallback(\n        new ExportError('[chart] Error loading SVG input.').setError(error)\n      );\n    }\n  }\n\n  // Export using options from the file\n  if (exportOptions.infile && exportOptions.infile.length) {\n    // Try to read the file to get the string representation\n    try {\n      log(4, '[chart] Attempting to export from an input file.');\n      options.export.instr = readFileSync(exportOptions.infile, 'utf8');\n      return exportAsString(options.export.instr.trim(), options, endCallback);\n    } catch (error) {\n      return endCallback(\n        new ExportError('[chart] Error loading input file.').setError(error)\n      );\n    }\n  }\n\n  // Export with options from the raw representation\n  if (\n    (exportOptions.instr && exportOptions.instr !== '') ||\n    (exportOptions.options && exportOptions.options !== '')\n  ) {\n    try {\n      log(4, '[chart] Attempting to export from a raw input.');\n\n      // Perform a direct inject when forced\n      if (toBoolean(options.customLogic?.allowCodeExecution)) {\n        return doStraightInject(options, endCallback);\n      }\n\n      // Either try to parse to JSON first or do the direct export\n      return typeof exportOptions.instr === 'string'\n        ? exportAsString(exportOptions.instr.trim(), options, endCallback)\n        : doExport(\n            options,\n            exportOptions.instr || exportOptions.options,\n            endCallback\n          );\n    } catch (error) {\n      return endCallback(\n        new ExportError('[chart] Error loading raw input.').setError(error)\n      );\n    }\n  }\n\n  // No input specified, pass an error message to the callback\n  return endCallback(\n    new ExportError(\n      `[chart] No valid input specified. Check if at least one of the following parameters is correctly set: 'infile', 'instr', 'options', or 'svg'.`\n    )\n  );\n};\n\n/**\n * Starts a batch export process for multiple charts based on the information\n * in the batch option. The batch is a string in the following format:\n * \"infile1.json=outfile1.png;infile2.json=outfile2.png;...\"\n *\n * @param {Object} options - The options object containing configuration for\n * a batch export.\n *\n * @returns {Promise<void>} A Promise that resolves once the batch export\n * process is completed.\n *\n * @throws {ExportError} Throws an ExportError if an error occurs during\n * any of the batch export process.\n */\nexport const batchExport = async (options) => {\n  const batchFunctions = [];\n\n  // Split and pair the --batch arguments\n  for (let pair of options.export.batch.split(';')) {\n    pair = pair.split('=');\n    if (pair.length === 2) {\n      batchFunctions.push(\n        startExport(\n          {\n            ...options,\n            export: {\n              ...options.export,\n              infile: pair[0],\n              outfile: pair[1]\n            }\n          },\n          (error, info) => {\n            // Throw an error\n            if (error) {\n              throw error;\n            }\n\n            // Save the base64 from a buffer to a correct image file\n            writeFileSync(\n              info.options.export.outfile,\n              info.options.export.type !== 'svg'\n                ? Buffer.from(info.result, 'base64')\n                : info.result\n            );\n          }\n        )\n      );\n    }\n  }\n\n  try {\n    // Await all exports are done\n    await Promise.all(batchFunctions);\n\n    // Kill pool and close browser after finishing batch export\n    await killPool();\n  } catch (error) {\n    throw new ExportError(\n      '[chart] Error encountered during batch export.'\n    ).setError(error);\n  }\n};\n\n/**\n * Starts a single export process based on the specified options.\n *\n * @param {Object} options - The options object containing configuration for\n * a single export.\n *\n * @returns {Promise<void>} A Promise that resolves once the single export\n * process is completed.\n *\n * @throws {ExportError} Throws an ExportError if an error occurs during\n * the single export process.\n */\nexport const singleExport = async (options) => {\n  // Use instr or its alias, options\n  options.export.instr = options.export.instr || options.export.options;\n\n  // Perform an export\n  await startExport(options, async (error, info) => {\n    // Exit process when error\n    if (error) {\n      throw error;\n    }\n\n    const { outfile, type } = info.options.export;\n\n    // Save the base64 from a buffer to a correct image file\n    writeFileSync(\n      outfile || `chart.${type}`,\n      type !== 'svg' ? Buffer.from(info.result, 'base64') : info.result\n    );\n\n    // Kill pool and close browser after finishing single export\n    await killPool();\n  });\n};\n\n/**\n * Determines the size and scale for chart export based on the provided options.\n *\n * @param {Object} options - The options object containing configuration for\n * chart export.\n *\n * @returns {Object} An object containing the calculated height, width,\n * and scale for the chart export.\n */\nexport const findChartSize = (options) => {\n  const { chart, exporting } =\n    options.export?.options || isCorrectJSON(options.export?.instr);\n\n  // See if globalOptions holds chart or exporting size\n  const globalOptions = isCorrectJSON(options.export?.globalOptions);\n\n  // Secure scale value\n  let scale =\n    options.export?.scale ||\n    exporting?.scale ||\n    globalOptions?.exporting?.scale ||\n    options.export?.defaultScale ||\n    1;\n\n  // the scale cannot be lower than 0.1 and cannot be higher than 5.0\n  scale = Math.max(0.1, Math.min(scale, 5.0));\n\n  // we want to round the numbers like 0.23234 -> 0.23\n  scale = roundNumber(scale, 2);\n\n  // Find chart size and scale\n  const size = {\n    height:\n      options.export?.height ||\n      exporting?.sourceHeight ||\n      chart?.height ||\n      globalOptions?.exporting?.sourceHeight ||\n      globalOptions?.chart?.height ||\n      options.export?.defaultHeight ||\n      400,\n    width:\n      options.export?.width ||\n      exporting?.sourceWidth ||\n      chart?.width ||\n      globalOptions?.exporting?.sourceWidth ||\n      globalOptions?.chart?.width ||\n      options.export?.defaultWidth ||\n      600,\n    scale\n  };\n\n  // Get rid of potential px and %\n  for (let [param, value] of Object.entries(size)) {\n    size[param] =\n      typeof value === 'string' ? +value.replace(/px|%/gi, '') : value;\n  }\n  return size;\n};\n\n/**\n * Function for finalizing options before export.\n *\n * @param {Object} options - The options object containing configuration for\n * the export process.\n * @param {Object} chartJson - The JSON representation of the chart.\n * @param {Function} endCallback - The callback function to be called upon\n * completion or error.\n * @param {string} svg - The SVG representation of the chart.\n *\n * @returns {Promise<void>} A Promise that resolves once the export process\n * is completed.\n */\nconst doExport = async (options, chartJson, endCallback, svg) => {\n  let { export: exportOptions, customLogic: customLogicOptions } = options;\n\n  const allowCodeExecutionScoped =\n    typeof customLogicOptions.allowCodeExecution === 'boolean'\n      ? customLogicOptions.allowCodeExecution\n      : allowCodeExecution;\n\n  if (!customLogicOptions) {\n    customLogicOptions = options.customLogic = {};\n  } else if (allowCodeExecutionScoped) {\n    if (typeof options.customLogic.resources === 'string') {\n      // Process resources\n      options.customLogic.resources = handleResources(\n        options.customLogic.resources,\n        toBoolean(options.customLogic.allowFileResources)\n      );\n    } else if (!options.customLogic.resources) {\n      try {\n        const resources = readFileSync('resources.json', 'utf8');\n        options.customLogic.resources = handleResources(\n          resources,\n          toBoolean(options.customLogic.allowFileResources)\n        );\n      } catch (error) {\n        logWithStack(\n          2,\n          error,\n          `[chart] Unable to load the default resources.json file.`\n        );\n      }\n    }\n  }\n\n  // If the allowCodeExecution flag isn't set, we should refuse the usage\n  // of callback, resources, and custom code. Additionally, the worker will\n  // refuse to run arbitrary JavaScript. Prioritized should be the scoped\n  // option, then we should take a look at the overall pool option.\n  if (!allowCodeExecutionScoped && customLogicOptions) {\n    if (\n      customLogicOptions.callback ||\n      customLogicOptions.resources ||\n      customLogicOptions.customCode\n    ) {\n      // Send back a friendly message saying that the exporter does not support\n      // these settings.\n      return endCallback(\n        new ExportError(\n          `[chart] The 'callback', 'resources' and 'customCode' options have been disabled for this server.`\n        )\n      );\n    }\n\n    // Reset all additional custom code\n    customLogicOptions.callback = false;\n    customLogicOptions.resources = false;\n    customLogicOptions.customCode = false;\n  }\n\n  // Clean properties to keep it lean and mean\n  if (chartJson) {\n    chartJson.chart = chartJson.chart || {};\n    chartJson.exporting = chartJson.exporting || {};\n    chartJson.exporting.enabled = false;\n  }\n\n  exportOptions.constr = exportOptions.constr || 'chart';\n  exportOptions.type = fixType(exportOptions.type, exportOptions.outfile);\n  if (exportOptions.type === 'svg') {\n    exportOptions.width = false;\n  }\n\n  // Prepare global and theme options\n  ['globalOptions', 'themeOptions'].forEach((optionsName) => {\n    try {\n      if (exportOptions && exportOptions[optionsName]) {\n        if (\n          typeof exportOptions[optionsName] === 'string' &&\n          exportOptions[optionsName].endsWith('.json')\n        ) {\n          exportOptions[optionsName] = isCorrectJSON(\n            readFileSync(exportOptions[optionsName], 'utf8'),\n            true\n          );\n        } else {\n          exportOptions[optionsName] = isCorrectJSON(\n            exportOptions[optionsName],\n            true\n          );\n        }\n      }\n    } catch (error) {\n      exportOptions[optionsName] = {};\n      logWithStack(2, error, `[chart] The '${optionsName}' cannot be loaded.`);\n    }\n  });\n\n  // Prepare the customCode\n  if (customLogicOptions.allowCodeExecution) {\n    try {\n      customLogicOptions.customCode = wrapAround(\n        customLogicOptions.customCode,\n        customLogicOptions.allowFileResources\n      );\n    } catch (error) {\n      logWithStack(2, error, `[chart] The 'customCode' cannot be loaded.`);\n    }\n  }\n\n  // Get the callback\n  if (\n    customLogicOptions &&\n    customLogicOptions.callback &&\n    customLogicOptions.callback?.indexOf('{') < 0\n  ) {\n    // The allowFileResources is always set to false for HTTP requests to avoid\n    // injecting arbitrary files from the fs\n    if (customLogicOptions.allowFileResources) {\n      try {\n        customLogicOptions.callback = readFileSync(\n          customLogicOptions.callback,\n          'utf8'\n        );\n      } catch (error) {\n        customLogicOptions.callback = false;\n        logWithStack(2, error, `[chart] The 'callback' cannot be loaded.`);\n      }\n    } else {\n      customLogicOptions.callback = false;\n    }\n  }\n\n  // Size search\n  options.export = {\n    ...options.export,\n    ...findChartSize(options)\n  };\n\n  // Post the work to the pool\n  try {\n    const result = await postWork(\n      exportOptions.strInj || chartJson || svg,\n      options\n    );\n    return endCallback(false, result);\n  } catch (error) {\n    return endCallback(error);\n  }\n};\n\n/**\n * Performs a direct inject of options before export. The function attempts\n * to stringify the provided options and removes unnecessary characters,\n * ensuring a clean and formatted input. The resulting string is saved as\n * a \"stright inject\" string in the export options. It then invokes the\n * doExport function with the updated options.\n *\n * IMPORTANT: Dangerous and must be used deliberately by someone who sets up\n * a server (see the  --allowCodeExecution option).\n *\n * @param {Object} options - The export options containing the input\n * to be injected.\n * @param {function} endCallback - The callback function to be invoked\n * at the end of the process.\n *\n * @returns {Promise} A Promise that resolves with the result of the export\n * operation or rejects with an error if any issues occur during the process.\n */\nconst doStraightInject = (options, endCallback) => {\n  try {\n    let strInj;\n    let instr = options.export.instr || options.export.options;\n\n    if (typeof instr !== 'string') {\n      // Try to stringify options\n      strInj = instr = optionsStringify(\n        instr,\n        options.customLogic?.allowCodeExecution\n      );\n    }\n    strInj = instr.replaceAll(/\\t|\\n|\\r/g, '').trim();\n\n    // Get rid of the ;\n    if (strInj[strInj.length - 1] === ';') {\n      strInj = strInj.substring(0, strInj.length - 1);\n    }\n\n    // Save as stright inject string\n    options.export.strInj = strInj;\n    return doExport(options, false, endCallback);\n  } catch (error) {\n    return endCallback(\n      new ExportError(\n        `[chart] Malformed input detected for ${options.export?.requestId || '?'}. Please make sure that your JSON/JavaScript options are sent using the \"options\" attribute, and that if you're using SVG, it is unescaped.`\n      ).setError(error)\n    );\n  }\n};\n\n/**\n * Exports a string based on the provided options and invokes an end callback.\n *\n * @param {string} stringToExport - The string content to be exported.\n * @param {Object} options - Export options, including customLogic with\n * allowCodeExecution flag.\n * @param {Function} endCallback - Callback function to be invoked at the end\n * of the export process.\n *\n * @returns {any} Result of the export process or an error if encountered.\n */\nconst exportAsString = (stringToExport, options, endCallback) => {\n  const { allowCodeExecution } = options.customLogic;\n\n  // Check if it is SVG\n  if (\n    stringToExport.indexOf('<svg') >= 0 ||\n    stringToExport.indexOf('<?xml') >= 0\n  ) {\n    log(4, '[chart] Parsing input as SVG.');\n    return doExport(options, false, endCallback, stringToExport);\n  }\n\n  try {\n    // Try to parse to JSON and call the doExport function\n    const chartJSON = JSON.parse(stringToExport.replaceAll(/\\t|\\n|\\r/g, ' '));\n\n    // If a correct JSON, do the export\n    return doExport(options, chartJSON, endCallback);\n  } catch (error) {\n    // Not a valid JSON\n    if (toBoolean(allowCodeExecution)) {\n      return doStraightInject(options, endCallback);\n    } else {\n      // Do not allow straight injection without the allowCodeExecution flag\n      return endCallback(\n        new ExportError(\n          '[chart] Only JSON configurations and SVG are allowed for this server. If this is your server, JavaScript custom code can be enabled by starting the server with the --allowCodeExecution flag.'\n        ).setError(error)\n      );\n    }\n  }\n};\n\n/**\n * Retrieves and returns the current status of code execution permission.\n *\n * @returns {any} The value of allowCodeExecution.\n */\nexport const getAllowCodeExecution = () => allowCodeExecution;\n\n/**\n * Sets the code execution permission based on the provided boolean value.\n *\n * @param {any} value - The value to be converted and assigned\n * to allowCodeExecution.\n */\nexport const setAllowCodeExecution = (value) => {\n  allowCodeExecution = toBoolean(value);\n};\n\nexport default {\n  batchExport,\n  singleExport,\n  getAllowCodeExecution,\n  setAllowCodeExecution,\n  startExport,\n  findChartSize\n};\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\n/**\n * @overview Used to sanitize the strings coming from the exporting module\n * to prevent XSS attacks (with the DOMPurify library).\n **/\n\nimport { JSDOM } from 'jsdom';\nimport DOMPurify from 'dompurify';\n\n/**\n * Sanitizes a given HTML string by removing <script> tags.\n * This function uses a regular expression to find and remove all\n * occurrences of <script>...</script> tags and any content within them.\n *\n * @param {string} input The HTML string to be sanitized.\n * @returns {string} The sanitized HTML string.\n */\nexport function sanitize(input) {\n  const window = new JSDOM('').window;\n  const purify = DOMPurify(window);\n  return purify.sanitize(input, {\n    ADD_TAGS: ['foreignObject'],\n    // Dissalow all xlinks in incoming SVG\n    FORBID_ATTR: ['xlink:href']\n  });\n}\n\nexport default sanitize;\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { log } from './logger.js';\n\n// Array that contains ids of all ongoing intervals\nconst intervalIds = [];\n\n/**\n * Adds id of a setInterval to the intervalIds array.\n *\n * @param {NodeJS.Timeout} id - Id of an interval.\n */\nexport const addInterval = (id) => {\n  intervalIds.push(id);\n};\n\n/**\n * Clears all of ongoing intervals by ids gathered in the intervalIds array.\n */\nexport const clearAllIntervals = () => {\n  log(4, `[server] Clearing all registered intervals.`);\n  for (const id of intervalIds) {\n    clearInterval(id);\n  }\n};\n\nexport default {\n  addInterval,\n  clearAllIntervals\n};\n","import { envs } from '../envs.js';\nimport { logWithStack } from '../logger.js';\n\n/**\n * Middleware for logging errors with stack trace and handling error response.\n *\n * @param {Error} error - The error object.\n * @param {Express.Request} req - The Express request object.\n * @param {Express.Response} res - The Express response object.\n * @param {Function} next - The next middleware function.\n */\nconst logErrorMiddleware = (error, req, res, next) => {\n  // Display the error with stack in a correct format\n  logWithStack(1, error);\n\n  // Delete the stack for the environment other than the development\n  if (envs.OTHER_NODE_ENV !== 'development') {\n    delete error.stack;\n  }\n\n  // Call the returnErrorMiddleware\n  next(error);\n};\n\n/**\n * Middleware for returning error response.\n *\n * @param {Error} error - The error object.\n * @param {Express.Request} req - The Express request object.\n * @param {Express.Response} res - The Express response object.\n * @param {Function} next - The next middleware function.\n */\nconst returnErrorMiddleware = (error, req, res, next) => {\n  // Gather all requied information for the response\n  const { statusCode: stCode, status, message, stack } = error;\n  const statusCode = stCode || status || 400;\n\n  // Set and return response\n  res.status(statusCode).json({ statusCode, message, stack });\n};\n\nexport default (app) => {\n  // Add log error middleware\n  app.use(logErrorMiddleware);\n\n  // Add set status and return error middleware\n  app.use(returnErrorMiddleware);\n};\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport rateLimit from 'express-rate-limit';\n\nimport { log } from '../logger.js';\n\n/**\n * Middleware for enabling rate limiting on the specified Express app.\n *\n * @param {Express} app - The Express app instance.\n * @param {Object} limitConfig - Configuration options for rate limiting.\n */\nexport default (app, limitConfig) => {\n  const msg =\n    'Too many requests, you have been rate limited. Please try again later.';\n\n  // Options for the rate limiter\n  const rateOptions = {\n    max: limitConfig.maxRequests || 30,\n    window: limitConfig.window || 1,\n    delay: limitConfig.delay || 0,\n    trustProxy: limitConfig.trustProxy || false,\n    skipKey: limitConfig.skipKey || false,\n    skipToken: limitConfig.skipToken || false\n  };\n\n  // Set if behind a proxy\n  if (rateOptions.trustProxy) {\n    app.enable('trust proxy');\n  }\n\n  // Create a limiter\n  const limiter = rateLimit({\n    windowMs: rateOptions.window * 60 * 1000,\n    // Limit each IP to 100 requests per windowMs\n    max: rateOptions.max,\n    // Disable delaying, full speed until the max limit is reached\n    delayMs: rateOptions.delay,\n    handler: (request, response) => {\n      response.format({\n        json: () => {\n          response.status(429).send({ message: msg });\n        },\n        default: () => {\n          response.status(429).send(msg);\n        }\n      });\n    },\n    skip: (request) => {\n      // Allow bypassing the limiter if a valid key/token has been sent\n      if (\n        rateOptions.skipKey !== false &&\n        rateOptions.skipToken !== false &&\n        request.query.key === rateOptions.skipKey &&\n        request.query.access_token === rateOptions.skipToken\n      ) {\n        log(4, '[rate limiting] Skipping rate limiter.');\n        return true;\n      }\n      return false;\n    }\n  });\n\n  // Use a limiter as a middleware\n  app.use(limiter);\n\n  log(\n    3,\n    `[rate limiting] Enabled rate limiting with ${rateOptions.max} requests per ${rateOptions.window} minute for each IP, trusting proxy: ${rateOptions.trustProxy}.`\n  );\n};\n","import ExportError from './ExportError.js';\n\nclass HttpError extends ExportError {\n  constructor(message, status) {\n    super(message);\n    this.status = this.statusCode = status;\n  }\n\n  setStatus(status) {\n    this.status = status;\n    return this;\n  }\n}\n\nexport default HttpError;\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { updateVersion, version } from '../../cache.js';\nimport { envs } from '../../envs.js';\n\nimport HttpError from '../../errors/HttpError.js';\n\n/**\n * Adds the POST /change_hc_version/:newVersion route that can be utilized to modify\n * the Highcharts version on the server.\n *\n * TODO: Add auth token and connect to API\n */\nexport default (app) =>\n  !app\n    ? false\n    : app.post(\n        '/version/change/:newVersion',\n        async (request, response, next) => {\n          try {\n            const adminToken = envs.HIGHCHARTS_ADMIN_TOKEN;\n\n            // Check the existence of the token\n            if (!adminToken || !adminToken.length) {\n              throw new HttpError(\n                'The server is not configured to perform run-time version changes: HIGHCHARTS_ADMIN_TOKEN is not set.',\n                401\n              );\n            }\n\n            // Check if the hc-auth header contain a correct token\n            const token = request.get('hc-auth');\n            if (!token || token !== adminToken) {\n              throw new HttpError(\n                'Invalid or missing token: Set the token in the hc-auth header.',\n                401\n              );\n            }\n\n            // Compare versions\n            const newVersion = request.params.newVersion;\n            if (newVersion) {\n              try {\n                // eslint-disable-next-line import/no-named-as-default-member\n                await updateVersion(newVersion);\n              } catch (error) {\n                throw new HttpError(\n                  `Version change: ${error.message}`,\n                  error.statusCode\n                ).setError(error);\n              }\n\n              // Success\n              response.status(200).send({\n                statusCode: 200,\n                version: version(),\n                message: `Successfully updated Highcharts to version: ${newVersion}.`\n              });\n            } else {\n              // No version specified\n              throw new HttpError('No new version supplied.', 400);\n            }\n          } catch (error) {\n            next(error);\n          }\n        }\n      );\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { v4 as uuid } from 'uuid';\n\nimport { getAllowCodeExecution, startExport } from '../../chart.js';\nimport { getOptions, mergeConfigOptions } from '../../config.js';\nimport { log } from '../../logger.js';\nimport {\n  fixType,\n  isCorrectJSON,\n  isObjectEmpty,\n  isPrivateRangeUrlFound,\n  optionsStringify,\n  measureTime\n} from '../../utils.js';\n\nimport HttpError from '../../errors/HttpError.js';\n\n// Reversed MIME types\nconst reversedMime = {\n  png: 'image/png',\n  jpeg: 'image/jpeg',\n  gif: 'image/gif',\n  pdf: 'application/pdf',\n  svg: 'image/svg+xml'\n};\n\n// The requests counter\nlet requestsCounter = 0;\n\n// The array of callbacks to call before a request\nconst beforeRequest = [];\n\n// The array of callbacks to call after a request\nconst afterRequest = [];\n\n/**\n * Invokes an array of callback functions with specified parameters, allowing\n * customization of request handling.\n *\n * @param {Function[]} callbacks - An array of callback functions\n * to be executed.\n * @param {Express.Request} request - The Express request object.\n * @param {Express.Response} response - The Express response object.\n * @param {Object} data - An object containing parameters like id, uniqueId,\n * type, and body.\n *\n * @returns {boolean} - Returns a boolean indicating the overall result\n * of the callback invocations.\n */\nconst doCallbacks = (callbacks, request, response, data) => {\n  let result = true;\n  const { id, uniqueId, type, body } = data;\n\n  callbacks.some((callback) => {\n    if (callback) {\n      let callResponse = callback(request, response, id, uniqueId, type, body);\n\n      if (callResponse !== undefined && callResponse !== true) {\n        result = callResponse;\n      }\n\n      return true;\n    }\n  });\n\n  return result;\n};\n\n/**\n * Handles the export requests from the client.\n *\n * @param {Express.Request} request - The Express request object.\n * @param {Express.Response} response - The Express response object.\n * @param {Function} next - The next middleware function.\n *\n * @returns {Promise<void>} - A promise that resolves once the export process\n * is complete.\n */\nconst exportHandler = async (request, response, next) => {\n  try {\n    // Start counting time\n    const stopCounter = measureTime();\n\n    // Create a unique ID for a request\n    const uniqueId = uuid().replace(/-/g, '');\n\n    // Get the current server's general options\n    const defaultOptions = getOptions();\n\n    const body = request.body;\n    const id = ++requestsCounter;\n\n    let type = fixType(body.type);\n\n    // Throw 'Bad Request' if there's no body\n    if (!body || isObjectEmpty(body)) {\n      throw new HttpError(\n        'The request body is required. Please ensure that your Content-Type header is correct (accepted types are application/json and multipart/form-data).',\n        400\n      );\n    }\n\n    // All of the below can be used\n    let instr = isCorrectJSON(body.infile || body.options || body.data);\n\n    // Throw 'Bad Request' if there's no JSON or SVG to export\n    if (!instr && !body.svg) {\n      log(\n        2,\n        `The request with ID ${uniqueId} from ${\n          request.headers['x-forwarded-for'] || request.connection.remoteAddress\n        } was incorrect:\n  Content-Type: ${request.headers['content-type']}. \n  Chart constructor: ${body.constr}.\n  Dimensions: ${body.width}x${body.height} @ ${body.scale} scale.\n  Type: ${type}.\n  Is SVG set? ${typeof body.svg !== 'undefined'}.\n  B64? ${typeof body.b64 !== 'undefined'}.\n  No download? ${typeof body.noDownload !== 'undefined'}.\n\n  Payload received: ${JSON.stringify(body.infile || body.options || body.data || body.svg)}\n\n  `\n      );\n\n      throw new HttpError(\n        \"No correct chart data found. Ensure that you are using either application/json or multipart/form-data headers. If sending JSON, make sure the chart data is in the 'infile', 'options', or 'data' attribute. If sending SVG, ensure it is in the 'svg' attribute.\",\n        400\n      );\n    }\n\n    let callResponse = false;\n\n    // Call the before request functions\n    callResponse = doCallbacks(beforeRequest, request, response, {\n      id,\n      uniqueId,\n      type,\n      body\n    });\n\n    // Block the request if one of a callbacks failed\n    if (callResponse !== true) {\n      return response.send(callResponse);\n    }\n\n    let connectionAborted = false;\n\n    // In case the connection is closed, force to abort further actions\n    request.socket.on('close', (hadErrors) => {\n      if (hadErrors) {\n        connectionAborted = true;\n      }\n    });\n\n    log(4, `[export] Got an incoming HTTP request with ID ${uniqueId}.`);\n\n    body.constr = (typeof body.constr === 'string' && body.constr) || 'chart';\n\n    // Gather and organize options from the payload\n    const requestOptions = {\n      export: {\n        instr,\n        type,\n        constr: body.constr[0].toLowerCase() + body.constr.substr(1),\n        height: body.height,\n        width: body.width,\n        scale: body.scale || defaultOptions.export.scale,\n        globalOptions: isCorrectJSON(body.globalOptions, true),\n        themeOptions: isCorrectJSON(body.themeOptions, true)\n      },\n      customLogic: {\n        allowCodeExecution: getAllowCodeExecution(),\n        allowFileResources: false,\n        resources: isCorrectJSON(body.resources, true),\n        callback: body.callback,\n        customCode: body.customCode\n      }\n    };\n\n    if (instr) {\n      // Stringify JSON with options\n      requestOptions.export.instr = optionsStringify(\n        instr,\n        requestOptions.customLogic.allowCodeExecution\n      );\n    }\n\n    // Merge the request options into default ones\n    const options = mergeConfigOptions(defaultOptions, requestOptions);\n\n    // Save the JSON if exists\n    options.export.options = instr;\n\n    // Lastly, add the server specific arguments into options as payload\n    options.payload = {\n      svg: body.svg || false,\n      b64: body.b64 || false,\n      noDownload: body.noDownload || false,\n      requestId: uniqueId\n    };\n\n    // Test xlink:href elements from payload's SVG\n    if (body.svg && isPrivateRangeUrlFound(options.payload.svg)) {\n      throw new HttpError(\n        'SVG potentially contain at least one forbidden URL in xlink:href element. Please review the SVG content and ensure that all referenced URLs comply with security policies.',\n        400\n      );\n    }\n\n    // Start the export process\n    await startExport(options, (error, info) => {\n      // Remove the close event from the socket\n      request.socket.removeAllListeners('close');\n\n      // After the whole exporting process\n      if (defaultOptions.server.benchmarking) {\n        log(\n          5,\n          `[benchmark] Request with ID ${uniqueId} - After the whole exporting process: ${stopCounter()}ms.`\n        );\n      }\n\n      // If the connection was closed, do nothing\n      if (connectionAborted) {\n        return log(\n          3,\n          `[export] The client closed the connection before the chart finished processing.`\n        );\n      }\n\n      // If error, log it and send it to the error middleware\n      if (error) {\n        throw error;\n      }\n\n      // If data is missing, log the message and send it to the error middleware\n      if (!info || !info.result) {\n        throw new HttpError(\n          `Unexpected return from chart generation. Please check your request data. For the request with ID ${uniqueId}, the result is ${info.result}.`,\n          400\n        );\n      }\n\n      // Get the type from options\n      type = info.options.export.type;\n\n      // The after request callbacks\n      doCallbacks(afterRequest, request, response, { id, body: info.result });\n\n      if (info.result) {\n        // If only base64 is required, return it\n        if (body.b64) {\n          // SVG Exception for the Highcharts 11.3.0 version\n          if (type === 'pdf' || type == 'svg') {\n            return response.send(\n              Buffer.from(info.result, 'utf8').toString('base64')\n            );\n          }\n\n          return response.send(info.result);\n        }\n\n        // Set correct content type\n        response.header('Content-Type', reversedMime[type] || 'image/png');\n\n        // Decide whether to download or not chart file\n        if (!body.noDownload) {\n          response.attachment(\n            `${request.params.filename || request.body.filename || 'chart'}.${\n              type || 'png'\n            }`\n          );\n        }\n\n        // If SVG, return plain content\n        return type === 'svg'\n          ? response.send(info.result)\n          : response.send(Buffer.from(info.result, 'base64'));\n      }\n    });\n  } catch (error) {\n    next(error);\n  }\n};\n\nexport default (app) => {\n  /**\n   * Adds the POST / a route for handling POST requests at the root endpoint.\n   */\n  app.post('/', exportHandler);\n\n  /**\n   * Adds the POST /:filename a route for handling POST requests with\n   * a specified filename parameter.\n   */\n  app.post('/:filename', exportHandler);\n};\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { readFileSync } from 'fs';\nimport { join as pather } from 'path';\nimport { log } from '../../logger.js';\n\nimport { version } from '../../cache.js';\nimport { addInterval } from '../../intervals.js';\nimport pool from '../../pool.js';\nimport { __dirname } from '../../utils.js';\n\nconst pkgFile = JSON.parse(readFileSync(pather(__dirname, 'package.json')));\n\nconst serverStartTime = new Date();\n\nconst successRates = [];\nconst recordInterval = 60 * 1000; // record every minute\nconst windowSize = 30; // 30 minutes\n\n/**\n * Calculates moving average indicator based on the data from the successRates\n * array.\n *\n * @returns {number} - A moving average for success ratio of the server exports.\n */\nfunction calculateMovingAverage() {\n  const sum = successRates.reduce((a, b) => a + b, 0);\n  return sum / successRates.length;\n}\n\n/**\n * Starts the interval responsible for calculating current success rate ratio\n * and gathers\n *\n * @returns {NodeJS.Timeout} id - Id of an interval.\n */\nexport const startSuccessRate = () =>\n  setInterval(() => {\n    const stats = pool.getStats();\n    const successRatio =\n      stats.exportAttempts === 0\n        ? 1\n        : (stats.performedExports / stats.exportAttempts) * 100;\n\n    successRates.push(successRatio);\n    if (successRates.length > windowSize) {\n      successRates.shift();\n    }\n  }, recordInterval);\n\n/**\n * Adds the /health and /success-moving-average routes\n * which output basic stats for the server.\n */\nexport default function addHealthRoutes(app) {\n  if (!app) {\n    return false;\n  }\n\n  // Start processing success rate ratio interval and save its id to the array\n  // for the graceful clearing on shutdown with injected addInterval funtion\n  addInterval(startSuccessRate());\n\n  app.get('/health', (_, res) => {\n    const stats = pool.getStats();\n    const period = successRates.length;\n    const movingAverage = calculateMovingAverage();\n\n    log(4, '[health.js] GET /health [200] - returning server health.');\n\n    res.send({\n      status: 'OK',\n      bootTime: serverStartTime,\n      uptime:\n        Math.floor(\n          (new Date().getTime() - serverStartTime.getTime()) / 1000 / 60\n        ) + ' minutes',\n      version: pkgFile.version,\n      highchartsVersion: version(),\n      averageProcessingTime: stats.spentAverage,\n      performedExports: stats.performedExports,\n      failedExports: stats.droppedExports,\n      exportAttempts: stats.exportAttempts,\n      sucessRatio: (stats.performedExports / stats.exportAttempts) * 100,\n      // eslint-disable-next-line import/no-named-as-default-member\n      pool: pool.getPoolInfoJSON(),\n\n      // Moving average\n      period,\n      movingAverage,\n      message:\n        isNaN(movingAverage) || !successRates.length\n          ? 'Too early to report. No exports made yet. Please check back soon.'\n          : `Last ${period} minutes had a success rate of ${movingAverage.toFixed(2)}%.`,\n\n      // SVG/JSON attempts\n      svgExportAttempts: stats.exportFromSvgAttempts,\n      jsonExportAttempts: stats.performedExports - stats.exportFromSvgAttempts\n    });\n  });\n}\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { promises as fsPromises } from 'fs';\nimport { posix } from 'path';\n\nimport cors from 'cors';\nimport express from 'express';\nimport http from 'http';\nimport https from 'https';\nimport multer from 'multer';\n\nimport errorHandler from './error.js';\nimport rateLimit from './rate_limit.js';\nimport { log, logWithStack } from '../logger.js';\nimport { __dirname } from '../utils.js';\n\nimport vSwitchRoute from './routes/change_hc_version.js';\nimport exportRoutes from './routes/export.js';\nimport healthRoute from './routes/health.js';\nimport uiRoute from './routes/ui.js';\n\nimport ExportError from '../errors/ExportError.js';\n\n// Array of an active servers\nconst activeServers = new Map();\n\n// Create express app\nconst app = express();\n\n// Disable the X-Powered-By header\napp.disable('x-powered-by');\n\n// Enable CORS support\napp.use(cors());\n\n// Getting a lot of RangeNotSatisfiableError exception.\n// Even though this is a deprecated options, let's try to set it to false.\napp.use((_req, res, next) => {\n  res.set('Accept-Ranges', 'none');\n  next();\n});\n\n/**\n * Attach error handlers to the server.\n *\n * @param {http.Server} server - The HTTP/HTTPS server instance.\n */\nconst attachServerErrorHandlers = (server) => {\n  server.on('clientError', (error, socket) => {\n    logWithStack(\n      1,\n      error,\n      `[server] Client error: ${error.message}, destroying socket.`\n    );\n    socket.destroy();\n  });\n\n  server.on('error', (error) => {\n    logWithStack(1, error, `[server] Server error: ${error.message}`);\n  });\n\n  server.on('connection', (socket) => {\n    socket.on('error', (error) => {\n      logWithStack(1, error, `[server] Socket error: ${error.message}`);\n    });\n  });\n};\n\n/**\n * Starts an HTTP server based on the provided configuration. The `serverConfig`\n * object contains all server related properties (see the `server` section\n * in the `lib/schemas/config.js` file for a reference).\n *\n * @param {Object} serverConfig - The server configuration object.\n *\n * @throws {ExportError} - Throws an error if the server cannot be configured\n * and started.\n */\nexport const startServer = async (serverConfig) => {\n  try {\n    // TODO: Read from config/env\n    // NOTE:\n    // Too big limits lead to timeouts in the export process when the\n    // rasterization timeout is set too low.\n    const uploadLimitMiB = serverConfig.maxUploadSize || 3;\n    const uploadLimitBytes = uploadLimitMiB * 1024 * 1024;\n\n    // Enable parsing of form data (files) with Multer package\n    const storage = multer.memoryStorage();\n    const upload = multer({\n      storage,\n      limits: {\n        fieldSize: uploadLimitBytes\n      }\n    });\n\n    // Enable body parser\n    app.use(express.json({ limit: uploadLimitBytes }));\n    app.use(express.urlencoded({ extended: true, limit: uploadLimitBytes }));\n\n    // Use only non-file multipart form fields\n    app.use(upload.none());\n\n    // Stop if not enabled\n    if (!serverConfig.enable) {\n      return false;\n    }\n\n    // Listen HTTP server\n    if (!serverConfig.ssl.force) {\n      // Main server instance (HTTP)\n      const httpServer = http.createServer(app);\n\n      // Attach error handlers and listen to the server\n      attachServerErrorHandlers(httpServer);\n\n      // Listen\n      httpServer.listen(serverConfig.port, serverConfig.host);\n\n      // Save the reference to HTTP server\n      activeServers.set(serverConfig.port, httpServer);\n\n      log(\n        3,\n        `[server] Started HTTP server on ${serverConfig.host}:${serverConfig.port}.`\n      );\n    }\n\n    // Listen HTTPS server\n    if (serverConfig.ssl.enable) {\n      // Set up an SSL server also\n      let key, cert;\n\n      try {\n        // Get the SSL key\n        key = await fsPromises.readFile(\n          posix.join(serverConfig.ssl.certPath, 'server.key'),\n          'utf8'\n        );\n\n        // Get the SSL certificate\n        cert = await fsPromises.readFile(\n          posix.join(serverConfig.ssl.certPath, 'server.crt'),\n          'utf8'\n        );\n      } catch (error) {\n        log(\n          2,\n          `[server] Unable to load key/certificate from the '${serverConfig.ssl.certPath}' path. Could not run secured layer server.`\n        );\n      }\n\n      if (key && cert) {\n        // Main server instance (HTTPS)\n        const httpsServer = https.createServer({ key, cert }, app);\n\n        // Attach error handlers and listen to the server\n        attachServerErrorHandlers(httpsServer);\n\n        // Listen\n        httpsServer.listen(serverConfig.ssl.port, serverConfig.host);\n\n        // Save the reference to HTTPS server\n        activeServers.set(serverConfig.ssl.port, httpsServer);\n\n        log(\n          3,\n          `[server] Started HTTPS server on ${serverConfig.host}:${serverConfig.ssl.port}.`\n        );\n      }\n    }\n\n    // Enable the rate limiter if config says so\n    if (\n      serverConfig.rateLimiting &&\n      serverConfig.rateLimiting.enable &&\n      ![0, NaN].includes(serverConfig.rateLimiting.maxRequests)\n    ) {\n      rateLimit(app, serverConfig.rateLimiting);\n    }\n\n    // Set up static folder's route\n    app.use(express.static(posix.join(__dirname, 'public')));\n\n    // Set up routes\n    healthRoute(app);\n    exportRoutes(app);\n    uiRoute(app);\n    vSwitchRoute(app);\n\n    // Set up centralized error handler\n    errorHandler(app);\n  } catch (error) {\n    throw new ExportError(\n      '[server] Could not configure and start the server.'\n    ).setError(error);\n  }\n};\n\n/**\n * Closes all servers associated with Express app instance.\n */\nexport const closeServers = () => {\n  log(4, `[server] Closing all servers.`);\n  for (const [port, server] of activeServers) {\n    server.close(() => {\n      activeServers.delete(port);\n      log(4, `[server] Closed server on port: ${port}.`);\n    });\n  }\n};\n\n/**\n * Get all servers associated with Express app instance.\n *\n * @returns {Array} - Servers associated with Express app instance.\n */\nexport const getServers = () => activeServers;\n\n/**\n * Enable rate limiting for the server.\n *\n * @param {Object} limitConfig - Configuration object for rate limiting.\n */\nexport const enableRateLimiting = (limitConfig) => rateLimit(app, limitConfig);\n\n/**\n * Get the Express instance.\n *\n * @returns {Object} - The Express instance.\n */\nexport const getExpress = () => express;\n\n/**\n * Get the Express app instance.\n *\n * @returns {Object} - The Express app instance.\n */\nexport const getApp = () => app;\n\n/**\n * Apply middleware(s) to a specific path.\n *\n * @param {string} path - The path to which the middleware(s) should be applied.\n * @param {...Function} middlewares - The middleware functions to be applied.\n */\nexport const use = (path, ...middlewares) => {\n  app.use(path, ...middlewares);\n};\n\n/**\n * Set up a route with GET method and apply middleware(s).\n *\n * @param {string} path - The route path.\n * @param {...Function} middlewares - The middleware functions to be applied.\n */\nexport const get = (path, ...middlewares) => {\n  app.get(path, ...middlewares);\n};\n\n/**\n * Set up a route with POST method and apply middleware(s).\n *\n * @param {string} path - The route path.\n * @param {...Function} middlewares - The middleware functions to be applied.\n */\nexport const post = (path, ...middlewares) => {\n  app.post(path, ...middlewares);\n};\n\nexport default {\n  startServer,\n  closeServers,\n  getServers,\n  enableRateLimiting,\n  getExpress,\n  getApp,\n  use,\n  get,\n  post\n};\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { join } from 'path';\n\nimport { __dirname } from '../../utils.js';\n\n/**\n * Adds the GET / route for a UI when enabled on the export server.\n */\nexport default (app) =>\n  !app\n    ? false\n    : app.get('/', (_request, response) => {\n        response.sendFile(join(__dirname, 'public', 'index.html'), {\n          acceptRanges: false\n        });\n      });\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport { clearAllIntervals } from './intervals.js';\nimport { killPool } from './pool.js';\nimport { closeServers } from './server/server.js';\n\n/**\n * Clean up function to trigger before ending process for the graceful shutdown.\n *\n * @param {number} exitCode - An exit code for the process.exit() function.\n */\nexport const shutdownCleanUp = async (exitCode) => {\n  // Await freeing all resources\n  await Promise.allSettled([\n    // Clear all ongoing intervals\n    clearAllIntervals(),\n\n    // Get available server instances (HTTP/HTTPS) and close them\n    closeServers(),\n\n    // Close pool along with its workers and the browser instance, if exists\n    killPool()\n  ]);\n\n  // Exit process with a correct code\n  process.exit(exitCode);\n};\n\nexport default {\n  shutdownCleanUp\n};\n","/*******************************************************************************\n\nHighcharts Export Server\n\nCopyright (c) 2016-2024, Highsoft\n\nLicenced under the MIT licence.\n\nAdditionally a valid Highcharts license is required for use.\n\nSee LICENSE file in root for details.\n\n*******************************************************************************/\n\nimport 'colors';\n\nimport { checkAndUpdateCache } from './cache.js';\nimport {\n  batchExport,\n  setAllowCodeExecution,\n  singleExport,\n  startExport\n} from './chart.js';\nimport { mapToNewConfig, manualConfig, setOptions } from './config.js';\nimport {\n  initLogging,\n  log,\n  logWithStack,\n  setLogLevel,\n  enableFileLogging\n} from './logger.js';\nimport { initPool, killPool } from './pool.js';\nimport { shutdownCleanUp } from './resource_release.js';\nimport server, { startServer } from './server/server.js';\nimport { printLogo, printUsage } from './utils.js';\n\n/**\n * Attaches exit listeners to the process, ensuring proper cleanup of resources\n * and termination on exit signals. Handles 'exit', 'SIGINT', 'SIGTERM', and\n * 'uncaughtException' events.\n */\nconst attachProcessExitListeners = () => {\n  log(3, '[process] Attaching exit listeners to the process.');\n\n  // Handler for the 'exit'\n  process.on('exit', (code) => {\n    log(4, `Process exited with code ${code}.`);\n  });\n\n  // Handler for the 'SIGINT'\n  process.on('SIGINT', async (name, code) => {\n    log(4, `The ${name} event with code: ${code}.`);\n    await shutdownCleanUp(0);\n  });\n\n  // Handler for the 'SIGTERM'\n  process.on('SIGTERM', async (name, code) => {\n    log(4, `The ${name} event with code: ${code}.`);\n    await shutdownCleanUp(0);\n  });\n\n  // Handler for the 'SIGHUP'\n  process.on('SIGHUP', async (name, code) => {\n    log(4, `The ${name} event with code: ${code}.`);\n    await shutdownCleanUp(0);\n  });\n\n  // Handler for the 'uncaughtException'\n  process.on('uncaughtException', async (error, name) => {\n    logWithStack(1, error, `The ${name} error.`);\n    await shutdownCleanUp(1);\n  });\n};\n\n/**\n * Initializes the export process. Tasks such as configuring logging, checking\n * cache and sources, and initializing the pool of resources happen during\n * this stage. Function that is required to be called before trying to export charts or setting a server. The `options` is an object that contains all options.\n *\n * @param {Object} options - All export options.\n *\n * @returns {Promise<Object>} Promise resolving to the updated export options.\n */\nconst initExport = async (options) => {\n  // Set the allowCodeExecution per export module scope\n  setAllowCodeExecution(\n    options.customLogic && options.customLogic.allowCodeExecution\n  );\n\n  // Init the logging\n  initLogging(options.logging);\n\n  // Attach process' exit listeners\n  if (options.other.listenToProcessExits) {\n    attachProcessExitListeners();\n  }\n\n  // Check if cache needs to be updated\n  await checkAndUpdateCache(options);\n\n  // Init the pool\n  await initPool({\n    pool: options.pool || {\n      minWorkers: 1,\n      maxWorkers: 1\n    },\n    puppeteerArgs: options.puppeteer.args || []\n  });\n\n  // Return updated options\n  return options;\n};\n\nexport default {\n  // Server\n  server,\n  startServer,\n\n  // Exporting\n  initExport,\n  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