Merge pull request #119 from sveltejs/better-cli

Better CLI

Author: Rich-Harris

package-lock.json

@@ -27,6 +27,7 @@
     "glob": "^7.1.2",
     "locate-character": "^2.0.5",
     "mkdirp": "^0.5.1",
+    "mri": "^1.1.0",
     "node-fetch": "^1.7.3",
     "relative": "^3.0.2",
     "require-relative": "^0.8.7",
@@ -52,6 +53,8 @@
     "nightmare": "^2.10.0",
     "npm-run-all": "^4.1.2",
     "rollup": "^0.53.0",
+    "rollup-plugin-json": "^2.3.0",
+    "rollup-plugin-string": "^2.0.2",
     "rollup-plugin-typescript": "^0.8.1",
     "source-map-support": "^0.5.2",
     "style-loader": "^0.19.1",

package.json

@@ -1,4 +1,6 @@
 import typescript from 'rollup-plugin-typescript';
+import string from 'rollup-plugin-string';
+import json from 'rollup-plugin-json';
 import pkg from './package.json';
 
 const external = [].concat(
@@ -12,6 +14,10 @@ const paths = {
 };
 
 const plugins = [
+	string({
+		include: '**/*.md'
+	}),
+	json(),
 	typescript({
 		typescript: require('typescript')
 	})

rollup.config.js

@@ -0,0 +1,16 @@
+# sapper v<@version@>
+
+https://sapper.svelte.technology
+
+> sapper build
+
+Creates a production-ready version of your app
+
+> sapper export
+
+If possible, exports your app as static files, suitable for hosting on
+services like Netlify or Surge
+
+> sapper --help
+
+Shows this message

src/cli/help.md

@@ -1,15 +1,34 @@
+import mri from 'mri';
+import chalk from 'chalk';
+import help from './help.md';
 import build from './build.js';
 import exporter from './export.js';
-import { dest, entry, isDev, src } from '../config';
+import { dest, entry, src } from '../config';
+import * as pkg from '../../package.json';
 
-process.env.NODE_ENV = 'production';
+const opts = mri(process.argv.slice(2), {
+	alias: {
+		h: 'help'
+	}
+});
+
+if (opts.help) {
+	const rendered = help
+		.replace('<@version@>', pkg.version)
+		.replace(/^(.+)/gm, (m: string, $1: string) => /[#>]/.test(m) ? $1 : `  ${$1}`)
+		.replace(/^# (.+)/gm, (m: string, $1: string) => chalk.bold.underline($1))
+		.replace(/^> (.+)/gm, (m: string, $1: string) => chalk.cyan($1));
+
+	console.log(`\n${rendered}\n`);
+	process.exit(0);
+}
+
+const [cmd] = opts._;
 
-const cmd = process.argv[2];
 const start = Date.now();
-const dev = isDev();
 
 if (cmd === 'build') {
-	build({ dest, dev, entry, src })
+	build({ dest, dev: false, entry, src })
 		.then(() => {
 			const elapsed = Date.now() - start;
 			console.error(`built in ${elapsed}ms`); // TODO beautify this, e.g. 'built in 4.7 seconds'