349 lines
9.0 KiB
JavaScript
349 lines
9.0 KiB
JavaScript
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#!/usr/bin/env node
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import fs from 'fs-extra'
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import path from 'path'
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import prettyHrtime from 'pretty-hrtime'
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import stdin from 'get-stdin'
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import read from 'read-cache'
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import pc from 'picocolors'
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import { globby } from 'globby'
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import slash from 'slash'
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import chokidar from 'chokidar'
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import postcss from 'postcss'
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import postcssrc from 'postcss-load-config'
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import postcssReporter from 'postcss-reporter/lib/formatter.js'
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import argv from './lib/args.js'
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import createDependencyGraph from './lib/DependencyGraph.js'
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import getMapfile from './lib/getMapfile.js'
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const reporter = postcssReporter()
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const depGraph = createDependencyGraph()
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let input = argv._
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const { dir, output } = argv
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if (argv.map) argv.map = { inline: false }
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let cliConfig
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async function buildCliConfig() {
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cliConfig = {
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options: {
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map: argv.map !== undefined ? argv.map : { inline: true },
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parser: argv.parser ? await import(argv.parser) : undefined,
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syntax: argv.syntax ? await import(argv.syntax) : undefined,
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stringifier: argv.stringifier
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? await import(argv.stringifier)
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: undefined,
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},
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plugins: argv.use
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? await Promise.all(
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argv.use.map(async (plugin) => {
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try {
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return (await import(plugin)).default()
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} catch (e) {
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const msg = e.message || `Cannot find module '${plugin}'`
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let prefix = msg.includes(plugin) ? '' : ` (${plugin})`
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if (e.name && e.name !== 'Error') prefix += `: ${e.name}`
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return error(`Plugin Error${prefix}: ${msg}'`)
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}
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})
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)
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: [],
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}
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}
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let configFile
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if (argv.env) process.env.NODE_ENV = argv.env
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if (argv.config) argv.config = path.resolve(argv.config)
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if (argv.watch) {
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process.stdin.on('end', () => process.exit(0))
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process.stdin.resume()
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}
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/* istanbul ignore next */
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if (parseInt(postcss().version) < 8) {
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error('Please install PostCSS 8 or above')
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}
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buildCliConfig()
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.then(() => {
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if (argv.watch && !(argv.output || argv.replace || argv.dir)) {
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error('Cannot write to stdout in watch mode')
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// Need to explicitly exit here, since error() doesn't exit in watch mode
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process.exit(1)
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}
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if (input && input.length) {
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return globby(
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input.map((i) => slash(String(i))),
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{ dot: argv.includeDotfiles }
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)
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}
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if (argv.replace || argv.dir) {
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error(
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'Input Error: Cannot use --dir or --replace when reading from stdin'
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)
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}
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if (argv.watch) {
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error('Input Error: Cannot run in watch mode when reading from stdin')
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}
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return ['stdin']
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})
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.then((i) => {
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if (!i || !i.length) {
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error('Input Error: You must pass a valid list of files to parse')
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}
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if (i.length > 1 && !argv.dir && !argv.replace) {
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error(
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'Input Error: Must use --dir or --replace with multiple input files'
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)
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}
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if (i[0] !== 'stdin') i = i.map((i) => path.resolve(i))
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input = i
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return files(input)
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})
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.then((results) => {
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if (argv.watch) {
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const printMessage = () =>
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printVerbose(pc.dim('\nWaiting for file changes...'))
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const watcher = chokidar.watch(input.concat(dependencies(results)), {
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usePolling: argv.poll,
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interval: argv.poll && typeof argv.poll === 'number' ? argv.poll : 100,
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awaitWriteFinish: {
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stabilityThreshold: 50,
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pollInterval: 10,
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},
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})
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if (configFile) watcher.add(configFile)
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watcher.on('ready', printMessage).on('change', (file) => {
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let recompile = []
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if (input.includes(file)) recompile.push(file)
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const dependants = depGraph
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.dependantsOf(file)
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.concat(getAncestorDirs(file).flatMap(depGraph.dependantsOf))
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recompile = recompile.concat(
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dependants.filter((file) => input.includes(file))
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)
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if (!recompile.length) recompile = input
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return files([...new Set(recompile)])
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.then((results) => watcher.add(dependencies(results)))
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.then(printMessage)
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.catch(error)
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})
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}
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})
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.catch((err) => {
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error(err)
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process.exit(1)
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})
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function rc(ctx, path) {
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if (argv.use) return Promise.resolve(cliConfig)
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return postcssrc(ctx, path)
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.then((rc) => {
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if (rc.options.from || rc.options.to) {
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error(
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'Config Error: Can not set from or to options in config file, use CLI arguments instead'
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)
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}
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configFile = rc.file
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return rc
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})
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.catch((err) => {
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if (!err.message.includes('No PostCSS Config found')) throw err
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})
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}
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function files(files) {
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if (typeof files === 'string') files = [files]
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return Promise.all(
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files.map((file) => {
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if (file === 'stdin') {
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return stdin().then((content) => {
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if (!content) return error('Input Error: Did not receive any STDIN')
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return css(content, 'stdin')
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})
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}
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return read(file).then((content) => css(content, file))
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})
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)
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}
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function css(css, file) {
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const ctx = { options: cliConfig.options }
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if (file !== 'stdin') {
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ctx.file = {
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dirname: path.dirname(file),
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basename: path.basename(file),
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extname: path.extname(file),
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}
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if (!argv.config) argv.config = path.dirname(file)
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}
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const relativePath =
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file !== 'stdin' ? path.relative(path.resolve(), file) : file
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if (!argv.config) argv.config = process.cwd()
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const time = process.hrtime()
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printVerbose(pc.cyan(`Processing ${pc.bold(relativePath)}...`))
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return rc(ctx, argv.config)
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.then((config) => {
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config = config || cliConfig
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const options = { ...config.options }
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if (file === 'stdin' && output) file = output
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// TODO: Unit test this
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options.from = file === 'stdin' ? path.join(process.cwd(), 'stdin') : file
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if (output || dir || argv.replace) {
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const base = argv.base
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? file.replace(path.resolve(argv.base), '')
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: path.basename(file)
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options.to = output || (argv.replace ? file : path.join(dir, base))
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if (argv.ext) {
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options.to = options.to.replace(path.extname(options.to), argv.ext)
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}
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options.to = path.resolve(options.to)
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}
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if (!options.to && config.options.map && !config.options.map.inline) {
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error(
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'Output Error: Cannot output external sourcemaps when writing to STDOUT'
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)
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}
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return postcss(config.plugins)
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.process(css, options)
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.then((result) => {
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const tasks = []
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if (options.to) {
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tasks.push(outputFile(options.to, result.css))
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if (result.map) {
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const mapfile = getMapfile(options)
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tasks.push(outputFile(mapfile, result.map.toString()))
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}
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} else process.stdout.write(result.css, 'utf8')
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return Promise.all(tasks).then(() => {
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const prettyTime = prettyHrtime(process.hrtime(time))
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printVerbose(
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pc.green(
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`Finished ${pc.bold(relativePath)} in ${pc.bold(prettyTime)}`
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)
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)
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const messages = result.warnings()
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if (messages.length) {
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console.warn(reporter({ ...result, messages }))
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}
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return result
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})
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})
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})
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.catch((err) => {
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throw err
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})
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async function outputFile(file, string) {
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const fileExists = await fs.pathExists(file)
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const currentValue = fileExists ? await fs.readFile(file, 'utf8') : null
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if (currentValue === string) return
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return fs.outputFile(file, string)
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}
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}
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function dependencies(results) {
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if (!Array.isArray(results)) results = [results]
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const messages = []
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results.forEach((result) => {
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if (result.messages <= 0) return
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result.messages
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.filter((msg) =>
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msg.type === 'dependency' || msg.type === 'dir-dependency' ? msg : ''
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)
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.map(depGraph.add)
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.forEach((dependency) => {
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if (dependency.type === 'dir-dependency') {
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messages.push(
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dependency.glob
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? path.join(dependency.dir, dependency.glob)
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: dependency.dir
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)
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} else {
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messages.push(dependency.file)
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}
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})
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})
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return messages
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}
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function printVerbose(message) {
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if (argv.verbose) console.warn(message)
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}
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function error(err) {
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// Seperate error from logging output
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if (argv.verbose) console.error()
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if (typeof err === 'string') {
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console.error(pc.red(err))
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} else if (err.name === 'CssSyntaxError') {
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console.error(err.toString())
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} else {
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console.error(err)
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}
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// Watch mode shouldn't exit on error
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if (argv.watch) return
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process.exit(1)
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}
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// Input: '/imports/components/button.css'
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// Output: ['/imports/components', '/imports', '/']
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function getAncestorDirs(fileOrDir) {
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const { root } = path.parse(fileOrDir)
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if (fileOrDir === root) {
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return []
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}
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const parentDir = path.dirname(fileOrDir)
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return [parentDir, ...getAncestorDirs(parentDir)]
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}
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