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{ Command as CLI } from 'commander'\nimport { slurp } from '../util/file'\nimport readPkg from 'pkginfo'\n\nconst keys = Object.keys\n\nexport default async function parse(pkg, argv) {\n const alwaysExclude =\n [ `node_modules`\n , `package.json`\n , `.*`\n , `*-min.js`\n , `*-min.js.map`\n , `*-min.css`\n , `*-min.css.map`\n , `*-debug.log`\n , `optimised-modules.json`\n , `dependencies.json`\n ]\n\n const defaults =\n { out: pkg.relative(`${pkg.name.split('/').pop()}-min`)\n , lib: pkg.relative(pkg.directories.lib || 'lib')\n , src: pkg.relative(pkg.directories.src || 'src')\n , optimize: 0\n , copy: true\n , debug: true\n , interactive: false\n , production: false\n , include: ['js:**/*.js', 'css:**/*.css']\n , exclude: [...alwaysExclude]\n , log: 'normal'\n , flags: keys(defaultFlags).map(f => `${f}:${defaultFlags[f]}`)\n , rawArgs: []\n , targetNode: false\n , targetBrowsers: ['last 3 versions']\n }\n\n const cli = new CLI()\n .version(readPkg(module).version)\n .option('-i, --src <dir>', `the root directory from which all sources are relative [${defaults.src}]`, pkg.relative, defaults.src)\n .option('-o, --out <prefix>', `write optimized output to files with the specified prefix [${defaults.out}]`, pkg.relative, defaults.out)\n .option('-L, --lib <dir>', `write unoptimized files to the specified directory [${defaults.lib}]`, pkg.relative, defaults.lib)\n .option('-I, --include [js|css:]<path>', `include a path or glob (relative to source root) [${defaults.include}]`, concatGlobs, [])\n .option('-X, --exclude [js|css:]<path>', `exclude a path or glob (relative to source root) [${defaults.exclude}]`, concatGlobs, [])\n .option('-O, --optimize <level>', `optimization level (0 = none) [${defaults.optimize}]`, setOptimization, defaults.optimize)\n .option('--no-copy', `disable copying of non-code files to ${defaults.lib}`, Boolean, !defaults.copy)\n .option('--no-debug', 'disable source map generation', Boolean, !defaults.debug)\n .option('--log <normal|json>', `log output format [${defaults.log}]`, /^(json|normal)$/i, defaults.log)\n .option('--interactive', `watch for and recompile on changes (implies -O 0)`)\n .option('--production', `enable production options (implies -O 1)`)\n .option('--target-browsers <spec|false>', `define target browser environments: [${defaults.targetBrowsers}]`, concatFlags, [])\n .option('--target-node <current|number|false>', `define target node environment: [${defaults.targetNode}]`, defaults.targetNode)\n .option('--flags <flags>', `toggle flags [${defaults.flags}]`, concatFlags, [])\n .option('@<path>', 'read options from the file at <path> (relative to cwd)')\n\n const opts = cli.parse(await explode(argv))\n\n Object.keys(opts).forEach(key => {\n if (key in defaults === false) {\n delete opts[key]\n }\n })\n\n opts.rawCommand = opts.rawArgs.join(' ')\n\n opts.include = conclude(['js', 'css'], defaults.include, opts.include)\n opts.exclude = conclude(['js', 'css'], defaults.exclude, opts.exclude)\n\n if (opts.targetBrowsers.length === 0) {\n opts.targetBrowsers = defaults.targetBrowsers\n } else if (opts.targetBrowsers.length === 1 && opts.targetBrowsers[0] === 'false') {\n opts.targetBrowsers = false\n }\n\n if (opts.targetNode !== 'current') {\n opts.targetNode = (Number(opts.targetNode) || false)\n }\n\n const rawFlags = flag(defaults.flags, opts.flags)\n\n opts.flags = keys(rawFlags).reduce((flags, name) => {\n if (name in validFlags) {\n let value = rawFlags[name]\n\n if (validFlags[name].some(valid => value === valid)) {\n flags[name] = value\n } else if (defaultFlags[name]) {\n flags[name] = defaultFlags[name]\n }\n }\n\n return flags\n }, {})\n\n opts.include['copy-files'] = ['**/*']\n opts.exclude['copy-files'] = [...opts.include.js, ...opts.include.css, ...opts.exclude['*']]\n\n if (process.env.NODE_ENV === 'production' && !opts.interactive) {\n opts.production = true\n }\n\n opts.optimize\n = opts.production? 1\n : opts.interactive? 0\n : opts.optimize\n\n opts.interactive = opts.production? false : opts.interactive\n\n return opts\n}\n\nexport const validFlags =\n { 'react': [ undefined, true, false ]\n , 'modules': [ 'umd', 'amd', 'ecmascript', 'commonjs', 'systemjs' ]\n , 'es-stage': [ 0, 1, 2, 3 ]\n , 'add-module-exports': [ undefined, true, false ]\n }\n\nexport const defaultFlags = { 'modules': 'umd' }\n\nfunction conclude(types, defaults, opts) {\n return Object.assign\n ( [... new Set(defaults)].reduce(parse, {})\n , [... new Set(opts)].reduce(parse, {})\n )\n\n function parse(pipe, val) {\n let [lines, pattern] = val.split(':')\n\n if (pattern) {\n lines = [lines]\n } else {\n pattern = lines\n lines = ['*', ...types]\n }\n\n lines.forEach(line => {\n pipe[line] = (pipe[line] || []).concat(pattern)\n })\n\n return pipe\n }\n}\n\nfunction flag(defaults, opts) {\n return Object.assign\n ( [... new Set(defaults)].reduce(parse, {})\n , [... new Set(opts)].reduce(parse, {})\n )\n\n function parse(flags, val) {\n let [flag, setting] = val.split(':')\n\n if (setting) {\n try {\n flags[flag] = JSON.parse(setting)\n } catch (e) {\n flags[flag] = setting\n }\n } else {\n flags[flag] = true\n }\n\n return flags\n }\n}\n\nfunction setOptimization(level) {\n return Math.max(level | 0, 0)\n}\n\nfunction concatGlobs(val, list) {\n let prep = val.replace(/,([^,:]+:)/g, \"\\0$1\")\n return list.concat(prep.split('\\0'))\n}\n\nfunction concatFlags(val, list) {\n return list.concat(val.split(/\\s*,\\s*/))\n}\n\nasync function explode(argv) {\n let exploded = []\n\n for (let arg of argv) {\n if (arg.startsWith('@')) {\n let file = arg.slice(1)\n\n try {\n let fileopts = (await slurp(file, 'utf8')).split(/\\s/)\n exploded = exploded.concat(await explode(fileopts))\n } catch (e) {\n console.error(e.message)\n process.exit(1)\n }\n } else if (arg) {\n exploded.push(arg)\n }\n }\n\n return exploded\n}"]} |