123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419 |
- var feature = require('caniuse-lite/dist/unpacker/feature').default
- var region = require('caniuse-lite/dist/unpacker/region').default
- var path = require('path')
- var fs = require('fs')
- var BrowserslistError = require('./error')
- var IS_SECTION = /^\s*\[(.+)]\s*$/
- var CONFIG_PATTERN = /^browserslist-config-/
- var SCOPED_CONFIG__PATTERN = /@[^/]+(?:\/[^/]+)?\/browserslist-config(?:-|$|\/)/
- var TIME_TO_UPDATE_CANIUSE = 6 * 30 * 24 * 60 * 60 * 1000
- var FORMAT =
- 'Browserslist config should be a string or an array ' +
- 'of strings with browser queries'
- var dataTimeChecked = false
- var filenessCache = {}
- var configCache = {}
- function checkExtend(name) {
- var use = ' Use `dangerousExtend` option to disable.'
- if (!CONFIG_PATTERN.test(name) && !SCOPED_CONFIG__PATTERN.test(name)) {
- throw new BrowserslistError(
- 'Browserslist config needs `browserslist-config-` prefix. ' + use
- )
- }
- if (name.replace(/^@[^/]+\//, '').indexOf('.') !== -1) {
- throw new BrowserslistError(
- '`.` not allowed in Browserslist config name. ' + use
- )
- }
- if (name.indexOf('node_modules') !== -1) {
- throw new BrowserslistError(
- '`node_modules` not allowed in Browserslist config.' + use
- )
- }
- }
- function isFile(file) {
- if (file in filenessCache) {
- return filenessCache[file]
- }
- var result = fs.existsSync(file) && fs.statSync(file).isFile()
- if (!process.env.BROWSERSLIST_DISABLE_CACHE) {
- filenessCache[file] = result
- }
- return result
- }
- function eachParent(file, callback) {
- var dir = isFile(file) ? path.dirname(file) : file
- var loc = path.resolve(dir)
- do {
- if (!pathInRoot(loc)) break
- var result = callback(loc)
- if (typeof result !== 'undefined') return result
- } while (loc !== (loc = path.dirname(loc)))
- return undefined
- }
- function pathInRoot(p) {
- if (!process.env.BROWSERSLIST_ROOT_PATH) return true
- var rootPath = path.resolve(process.env.BROWSERSLIST_ROOT_PATH)
- if (path.relative(rootPath, p).substring(0, 2) === '..') {
- return false
- }
- return true
- }
- function check(section) {
- if (Array.isArray(section)) {
- for (var i = 0; i < section.length; i++) {
- if (typeof section[i] !== 'string') {
- throw new BrowserslistError(FORMAT)
- }
- }
- } else if (typeof section !== 'string') {
- throw new BrowserslistError(FORMAT)
- }
- }
- function pickEnv(config, opts) {
- if (typeof config !== 'object') return config
- var name
- if (typeof opts.env === 'string') {
- name = opts.env
- } else if (process.env.BROWSERSLIST_ENV) {
- name = process.env.BROWSERSLIST_ENV
- } else if (process.env.NODE_ENV) {
- name = process.env.NODE_ENV
- } else {
- name = 'production'
- }
- if (opts.throwOnMissing) {
- if (name && name !== 'defaults' && !config[name]) {
- throw new BrowserslistError(
- 'Missing config for Browserslist environment `' + name + '`'
- )
- }
- }
- return config[name] || config.defaults
- }
- function parsePackage(file) {
- var config = JSON.parse(
- fs
- .readFileSync(file)
- .toString()
- .replace(/^\uFEFF/m, '')
- )
- if (config.browserlist && !config.browserslist) {
- throw new BrowserslistError(
- '`browserlist` key instead of `browserslist` in ' + file
- )
- }
- var list = config.browserslist
- if (Array.isArray(list) || typeof list === 'string') {
- list = { defaults: list }
- }
- for (var i in list) {
- check(list[i])
- }
- return list
- }
- function latestReleaseTime(agents) {
- var latest = 0
- for (var name in agents) {
- var dates = agents[name].releaseDate || {}
- for (var key in dates) {
- if (latest < dates[key]) {
- latest = dates[key]
- }
- }
- }
- return latest * 1000
- }
- function normalizeStats(data, stats) {
- if (!data) {
- data = {}
- }
- if (stats && 'dataByBrowser' in stats) {
- stats = stats.dataByBrowser
- }
- if (typeof stats !== 'object') return undefined
- var normalized = {}
- for (var i in stats) {
- var versions = Object.keys(stats[i])
- if (versions.length === 1 && data[i] && data[i].versions.length === 1) {
- var normal = data[i].versions[0]
- normalized[i] = {}
- normalized[i][normal] = stats[i][versions[0]]
- } else {
- normalized[i] = stats[i]
- }
- }
- return normalized
- }
- function normalizeUsageData(usageData, data) {
- for (var browser in usageData) {
- var browserUsage = usageData[browser]
-
-
- if ('0' in browserUsage) {
- var versions = data[browser].versions
- browserUsage[versions[versions.length - 1]] = browserUsage[0]
- delete browserUsage[0]
- }
- }
- }
- module.exports = {
- loadQueries: function loadQueries(ctx, name) {
- if (!ctx.dangerousExtend && !process.env.BROWSERSLIST_DANGEROUS_EXTEND) {
- checkExtend(name)
- }
- var queries = require(require.resolve(name, { paths: ['.', ctx.path] }))
- if (queries) {
- if (Array.isArray(queries)) {
- return queries
- } else if (typeof queries === 'object') {
- if (!queries.defaults) queries.defaults = []
- return pickEnv(queries, ctx, name)
- }
- }
- throw new BrowserslistError(
- '`' +
- name +
- '` config exports not an array of queries' +
- ' or an object of envs'
- )
- },
- loadStat: function loadStat(ctx, name, data) {
- if (!ctx.dangerousExtend && !process.env.BROWSERSLIST_DANGEROUS_EXTEND) {
- checkExtend(name)
- }
- var stats = require(require.resolve(
- path.join(name, 'browserslist-stats.json'),
- { paths: ['.'] }
- ))
- return normalizeStats(data, stats)
- },
- getStat: function getStat(opts, data) {
- var stats
- if (opts.stats) {
- stats = opts.stats
- } else if (process.env.BROWSERSLIST_STATS) {
- stats = process.env.BROWSERSLIST_STATS
- } else if (opts.path && path.resolve && fs.existsSync) {
- stats = eachParent(opts.path, function (dir) {
- var file = path.join(dir, 'browserslist-stats.json')
- return isFile(file) ? file : undefined
- })
- }
- if (typeof stats === 'string') {
- try {
- stats = JSON.parse(fs.readFileSync(stats))
- } catch (e) {
- throw new BrowserslistError("Can't read " + stats)
- }
- }
- return normalizeStats(data, stats)
- },
- loadConfig: function loadConfig(opts) {
- if (process.env.BROWSERSLIST) {
- return process.env.BROWSERSLIST
- } else if (opts.config || process.env.BROWSERSLIST_CONFIG) {
- var file = opts.config || process.env.BROWSERSLIST_CONFIG
- if (path.basename(file) === 'package.json') {
- return pickEnv(parsePackage(file), opts)
- } else {
- return pickEnv(module.exports.readConfig(file), opts)
- }
- } else if (opts.path) {
- return pickEnv(module.exports.findConfig(opts.path), opts)
- } else {
- return undefined
- }
- },
- loadCountry: function loadCountry(usage, country, data) {
- var code = country.replace(/[^\w-]/g, '')
- if (!usage[code]) {
- var compressed
- try {
- compressed = require('caniuse-lite/data/regions/' + code + '.js')
- } catch (e) {
- throw new BrowserslistError('Unknown region name `' + code + '`.')
- }
- var usageData = region(compressed)
- normalizeUsageData(usageData, data)
- usage[country] = {}
- for (var i in usageData) {
- for (var j in usageData[i]) {
- usage[country][i + ' ' + j] = usageData[i][j]
- }
- }
- }
- },
- loadFeature: function loadFeature(features, name) {
- name = name.replace(/[^\w-]/g, '')
- if (features[name]) return
- var compressed
- try {
- compressed = require('caniuse-lite/data/features/' + name + '.js')
- } catch (e) {
- throw new BrowserslistError('Unknown feature name `' + name + '`.')
- }
- var stats = feature(compressed).stats
- features[name] = {}
- for (var i in stats) {
- features[name][i] = {}
- for (var j in stats[i]) {
- features[name][i][j] = stats[i][j]
- }
- }
- },
- parseConfig: function parseConfig(string) {
- var result = { defaults: [] }
- var sections = ['defaults']
- string
- .toString()
- .replace(/#[^\n]*/g, '')
- .split(/\n|,/)
- .map(function (line) {
- return line.trim()
- })
- .filter(function (line) {
- return line !== ''
- })
- .forEach(function (line) {
- if (IS_SECTION.test(line)) {
- sections = line.match(IS_SECTION)[1].trim().split(' ')
- sections.forEach(function (section) {
- if (result[section]) {
- throw new BrowserslistError(
- 'Duplicate section ' + section + ' in Browserslist config'
- )
- }
- result[section] = []
- })
- } else {
- sections.forEach(function (section) {
- result[section].push(line)
- })
- }
- })
- return result
- },
- readConfig: function readConfig(file) {
- if (!isFile(file)) {
- throw new BrowserslistError("Can't read " + file + ' config')
- }
- return module.exports.parseConfig(fs.readFileSync(file))
- },
- findConfig: function findConfig(from) {
- from = path.resolve(from)
- var passed = []
- var resolved = eachParent(from, function (dir) {
- if (dir in configCache) {
- return configCache[dir]
- }
- passed.push(dir)
- var config = path.join(dir, 'browserslist')
- var pkg = path.join(dir, 'package.json')
- var rc = path.join(dir, '.browserslistrc')
- var pkgBrowserslist
- if (isFile(pkg)) {
- try {
- pkgBrowserslist = parsePackage(pkg)
- } catch (e) {
- if (e.name === 'BrowserslistError') throw e
- console.warn(
- '[Browserslist] Could not parse ' + pkg + '. Ignoring it.'
- )
- }
- }
- if (isFile(config) && pkgBrowserslist) {
- throw new BrowserslistError(
- dir + ' contains both browserslist and package.json with browsers'
- )
- } else if (isFile(rc) && pkgBrowserslist) {
- throw new BrowserslistError(
- dir + ' contains both .browserslistrc and package.json with browsers'
- )
- } else if (isFile(config) && isFile(rc)) {
- throw new BrowserslistError(
- dir + ' contains both .browserslistrc and browserslist'
- )
- } else if (isFile(config)) {
- return module.exports.readConfig(config)
- } else if (isFile(rc)) {
- return module.exports.readConfig(rc)
- } else {
- return pkgBrowserslist
- }
- })
- if (!process.env.BROWSERSLIST_DISABLE_CACHE) {
- passed.forEach(function (dir) {
- configCache[dir] = resolved
- })
- }
- return resolved
- },
- clearCaches: function clearCaches() {
- dataTimeChecked = false
- filenessCache = {}
- configCache = {}
- this.cache = {}
- },
- oldDataWarning: function oldDataWarning(agentsObj) {
- if (dataTimeChecked) return
- dataTimeChecked = true
- if (process.env.BROWSERSLIST_IGNORE_OLD_DATA) return
- var latest = latestReleaseTime(agentsObj)
- var halfYearAgo = Date.now() - TIME_TO_UPDATE_CANIUSE
- if (latest !== 0 && latest < halfYearAgo) {
- console.warn(
- 'Browserslist: caniuse-lite is outdated. Please run:\n' +
- ' npx update-browserslist-db@latest\n' +
- ' Why you should do it regularly: ' +
- 'https://github.com/browserslist/update-db#readme'
- )
- }
- },
- currentNode: function currentNode() {
- return 'node ' + process.versions.node
- },
- env: process.env
- }
|