refactor: add flow support to eslint configuration

- make @verdaccio/types a dev dependency
- refactor the plugin main class, constructor and methods signatures
  to comply with the latest @verdaccio/types
- remove the `files` entry from `package.json` and setup
  `.npmignore` to ignore everything except `bin/` and `lib/*.js`

Author: dlouzan

.babelrc

@@ -1,7 +1,9 @@
 {
-  "presets": [["env", {
-    "targets": {
-      "node": "6"
-    }
-    }], "flow"]
+  "presets": [
+    ["env", {
+      "targets": {
+        "node": "6"
+      }
+    }], "flow"
+  ]
 }

.editorconfig

@@ -11,3 +11,4 @@ insert_final_newline = true
 
 [*.md]
 trim_trailing_whitespace = false
+

.eslintignore

@@ -0,0 +1,3 @@
+node_modules/
+lib/
+flow-typed/

.eslintrc.yml

@@ -1,268 +1,33 @@
 env:
   es6: true
   node: true
-extends: 'eslint:recommended'
+parser: babel-eslint
+extends:
+- eslint:recommended
+- plugin:flowtype/recommended
+plugins:
+- flowtype
 parserOptions:
-  sourceType: module
+  sourceType": module
+  ecmaVersion": 6
+  ecmaFeatures:
+    impliedStrict: true
+    jsx: true
 rules:
-  accessor-pairs: error
-  array-bracket-newline: error
-  array-bracket-spacing:
-    - error
-    - never
-  array-callback-return: error
-  array-element-newline: error
-  arrow-body-style: error
-  arrow-parens: 'off'
-  arrow-spacing:
-    - error
-    - after: true
-      before: true
-  block-scoped-var: error
-  block-spacing: error
-  brace-style:
-    - error
-    - 1tbs
-  callback-return: error
-  camelcase:
-    - error
-    - properties: never
-  capitalized-comments:
-    - error
-    - always
-  class-methods-use-this: error
-  comma-dangle: error
-  comma-spacing:
-    - error
-    - after: true
-      before: false
-  comma-style:
-    - error
-    - last
-  complexity: error
-  computed-property-spacing:
-    - error
-    - never
-  consistent-return: 'off'
-  consistent-this: error
-  curly: 'off'
-  default-case: error
-  dot-location:
-    - error
-    - object
-  dot-notation:
-    - error
-    - allowKeywords: true
-  eol-last: error
-  eqeqeq: error
-  for-direction: error
-  func-call-spacing: error
-  func-name-matching: error
-  func-names:
-    - error
-    - never
-  func-style:
-    - error
-    - declaration
-  function-paren-newline: error
-  generator-star-spacing: error
-  getter-return: error
-  global-require: 'off'
-  guard-for-in: error
-  handle-callback-err: error
-  id-blacklist: error
-  id-length: error
-  id-match: error
-  implicit-arrow-linebreak:
-    - error
-    - beside
-  indent: 'off'
-  indent-legacy: 'off'
-  init-declarations: error
-  jsx-quotes: error
-  key-spacing: 'off'
-  keyword-spacing:
-    - error
-    - after: true
-      before: true
-  line-comment-position: error
-  linebreak-style:
-    - error
-    - unix
-  lines-around-comment: error
-  lines-around-directive: error
-  lines-between-class-members: error
-  max-depth: error
-  max-len: 'off'
-  max-lines: error
-  max-nested-callbacks: error
-  max-params: error
-  max-statements: 'off'
-  max-statements-per-line: error
-  multiline-comment-style:
-    - error
-    - separate-lines
-  multiline-ternary: error
-  new-cap: error
-  new-parens: error
-  newline-after-var: 'off'
-  newline-before-return: 'off'
-  newline-per-chained-call: error
-  no-alert: error
-  no-array-constructor: error
-  no-await-in-loop: error
-  no-bitwise: error
-  no-buffer-constructor: error
-  no-caller: error
-  no-catch-shadow: error
-  no-confusing-arrow: error
-  no-continue: error
-  no-div-regex: error
-  no-duplicate-imports: error
-  no-else-return: 'off'
-  no-empty-function: error
-  no-eq-null: error
-  no-eval: error
-  no-extend-native: error
-  no-extra-bind: error
-  no-extra-label: error
-  no-extra-parens: error
-  no-floating-decimal: error
-  no-implicit-coercion: error
-  no-implicit-globals: error
-  no-implied-eval: error
-  no-inline-comments: 'off'
-  no-invalid-this: error
-  no-iterator: error
-  no-label-var: error
-  no-labels: error
-  no-lone-blocks: error
-  no-lonely-if: 'off'
-  no-loop-func: error
-  no-magic-numbers: 'off'
-  no-mixed-operators: error
-  no-mixed-requires: error
-  no-multi-assign: error
-  no-multi-spaces: error
-  no-multi-str: error
-  no-multiple-empty-lines: error
-  no-native-reassign: error
-  no-negated-condition: error
-  no-negated-in-lhs: error
-  no-nested-ternary: error
-  no-new: error
-  no-new-func: error
-  no-new-object: error
-  no-new-require: error
-  no-new-wrappers: error
-  no-octal-escape: error
-  no-param-reassign: error
-  no-path-concat: error
-  no-plusplus: error
-  no-process-env: error
-  no-process-exit: error
-  no-proto: error
-  no-prototype-builtins: error
-  no-restricted-globals: error
-  no-restricted-imports: error
-  no-restricted-modules: error
-  no-restricted-properties: error
-  no-restricted-syntax: error
-  no-return-assign: error
-  no-return-await: error
-  no-script-url: error
-  no-self-compare: error
-  no-sequences: error
-  no-shadow: error
-  no-shadow-restricted-names: error
-  no-spaced-func: error
-  no-sync: error
-  no-tabs: error
-  no-template-curly-in-string: error
-  no-ternary: error
-  no-throw-literal: error
-  no-trailing-spaces: error
-  no-undef-init: error
-  no-undefined: 'off'
-  no-underscore-dangle: 'off'
-  no-unmodified-loop-condition: error
-  no-unneeded-ternary: error
-  no-unused-expressions: error
-  no-use-before-define: error
-  no-useless-call: error
-  no-useless-computed-key: error
-  no-useless-concat: error
-  no-useless-constructor: error
-  no-useless-rename: error
-  no-useless-return: error
-  no-var: 'off'
-  no-void: error
-  no-warning-comments: error
-  no-whitespace-before-property: error
-  no-with: error
-  nonblock-statement-body-position: error
-  object-curly-newline: error
-  object-curly-spacing:
-    - error
-    - never
-  object-property-newline: error
-  object-shorthand: error
-  one-var: 'off'
-  one-var-declaration-per-line: error
-  operator-assignment: error
-  operator-linebreak: error
-  padded-blocks: 'off'
-  padding-line-between-statements: error
-  prefer-arrow-callback: 'off'
-  prefer-const: error
-  prefer-destructuring: error
-  prefer-numeric-literals: error
-  prefer-promise-reject-errors: error
-  prefer-reflect: error
-  prefer-rest-params: error
-  prefer-spread: error
-  prefer-template: error
-  quote-props: 'off'
-  quotes:
-    - error
-    - single
-  radix: error
-  require-await: error
-  require-jsdoc: 'off'
-  rest-spread-spacing: error
-  semi: error
-  semi-spacing: error
-  semi-style:
-    - error
-    - last
-  sort-imports: error
-  sort-keys:
-    - error
-    - desc
-  sort-vars: error
-  space-before-blocks: error
-  space-before-function-paren: 'off'
-  space-in-parens:
-    - error
-    - never
-  space-infix-ops: error
-  space-unary-ops: error
-  spaced-comment:
-    - error
-    - always
-  strict: error
-  switch-colon-spacing: error
-  symbol-description: error
-  template-curly-spacing: error
-  template-tag-spacing: error
-  unicode-bom:
-    - error
-    - never
-  valid-jsdoc: error
-  vars-on-top: 'off'
-  wrap-iife: error
-  wrap-regex: error
-  yield-star-spacing: error
-  yoda:
-    - error
-    - never
+  no-useless-escape: 2
+  handle-callback-err: 2
+  no-fallthrough: 2
+  no-new-require: 2
+  max-len:
+  - 2
+  - 160
+  camelcase: 0
+  require-jsdoc: 0
+  valid-jsdoc: 0
+  prefer-spread: 1
+  prefer-rest-params: 1
+  linebreak-style: 0
+  quote-props:
+  - "error"
+  - "as-needed"
+

.flowconfig

@@ -1,6 +1,7 @@
 [ignore]
 .*/node_modules/.*
-lib/.*
+.*/.vscode/.*
+.*/lib/.*
 
 [libs]
 node_modules/@verdaccio/types/lib/

.npmignore

@@ -1 +1,3 @@
 *
+!bin/*
+!lib/*.js

README.md

@@ -132,6 +132,22 @@ finally run
 npm publish
 ```
 
+## Flow Support
+
+In order to support flow, flow-typed support files are installed in the
+repo. These are generated based on the dependencies of the project and
+committed to the repository.
+
+Anytime the project dependencies change, run the following command to
+update the flow-typed support files:
+
+```bash
+# Just once in your environment
+npm install -g flow-typed
+
+flow-typed install
+```
+
 ## Inspired by
 
 - [verdaccio-ldap](https://github.com/Alexandre-io/verdaccio-ldap)

flow-typed/.editorconfig

@@ -0,0 +1,2 @@
+# Ignore all files in this directory
+root = true