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304 lines
8.5 KiB
304 lines
8.5 KiB
var region = require('caniuse-lite/dist/unpacker/region').default |
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var path = require('path') |
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var fs = require('fs') |
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var BrowserslistError = require('./error') |
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var IS_SECTION = /^\s*\[(.+)\]\s*$/ |
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var CONFIG_PATTERN = /^browserslist-config-/ |
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var SCOPED_CONFIG__PATTERN = /@[^./]+\/browserslist-config(-|$)/ |
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var TIME_TO_UPDATE_CANIUSE = 6 * 30 * 24 * 60 * 60 * 1000 |
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var FORMAT = 'Browserslist config should be a string or an array ' + |
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'of strings with browser queries' |
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var dataTimeChecked = false |
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var filenessCache = { } |
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var configCache = { } |
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function checkExtend (name) { |
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var use = ' Use `dangerousExtend` option to disable.' |
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if (!CONFIG_PATTERN.test(name) && !SCOPED_CONFIG__PATTERN.test(name)) { |
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throw new BrowserslistError( |
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'Browserslist config needs `browserslist-config-` prefix. ' + use) |
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} |
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if (name.indexOf('.') !== -1) { |
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throw new BrowserslistError( |
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'`.` not allowed in Browserslist config name. ' + use) |
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} |
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if (name.indexOf('node_modules') !== -1) { |
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throw new BrowserslistError( |
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'`node_modules` not allowed in Browserslist config.' + use) |
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} |
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} |
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function isFile (file) { |
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if (file in filenessCache) { |
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return filenessCache[file] |
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} |
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var result = fs.existsSync(file) && fs.statSync(file).isFile() |
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if (!process.env.BROWSERSLIST_DISABLE_CACHE) { |
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filenessCache[file] = result |
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} |
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return result |
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} |
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function eachParent (file, callback) { |
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var loc = path.resolve(file) |
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do { |
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var result = callback(loc) |
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if (typeof result !== 'undefined') return result |
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} while (loc !== (loc = path.dirname(loc))) |
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return undefined |
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} |
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function check (section) { |
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if (Array.isArray(section)) { |
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for (var i = 0; i < section.length; i++) { |
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if (typeof section[i] !== 'string') { |
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throw new BrowserslistError(FORMAT) |
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} |
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} |
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} else if (typeof section !== 'string') { |
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throw new BrowserslistError(FORMAT) |
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} |
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} |
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function pickEnv (config, opts) { |
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if (typeof config !== 'object') return config |
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var name |
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if (typeof opts.env === 'string') { |
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name = opts.env |
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} else if (process.env.BROWSERSLIST_ENV) { |
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name = process.env.BROWSERSLIST_ENV |
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} else if (process.env.NODE_ENV) { |
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name = process.env.NODE_ENV |
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} else { |
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name = 'production' |
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} |
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return config[name] || config.defaults |
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} |
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function parsePackage (file) { |
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var config = JSON.parse(fs.readFileSync(file)) |
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if (config.browserlist && !config.browserslist) { |
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throw new BrowserslistError( |
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'`browserlist` key instead of `browserslist` in ' + file) |
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} |
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var list = config.browserslist |
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if (Array.isArray(list)) { |
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list = { defaults: list } |
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} |
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for (var i in list) { |
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check(list[i]) |
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} |
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return list |
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} |
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function latestReleaseTime (agents) { |
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var latest = 0 |
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for (var name in agents) { |
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var dates = agents[name].releaseDate || { } |
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for (var key in dates) { |
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if (latest < dates[key]) { |
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latest = dates[key] |
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} |
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} |
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} |
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return latest * 1000 |
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} |
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module.exports = { |
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loadQueries: function loadQueries (context, name) { |
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if (!context.dangerousExtend) checkExtend(name) |
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// eslint-disable-next-line security/detect-non-literal-require |
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var queries = require(require.resolve(name, { paths: ['.'] })) |
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if (!Array.isArray(queries)) { |
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throw new BrowserslistError( |
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'`' + name + '` config exports not an array of queries') |
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} |
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return queries |
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}, |
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getStat: function getStat (opts) { |
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var stats |
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if (opts.stats) { |
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stats = opts.stats |
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} else if (process.env.BROWSERSLIST_STATS) { |
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stats = process.env.BROWSERSLIST_STATS |
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} else if (opts.path && path.resolve && fs.existsSync) { |
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stats = eachParent(opts.path, function (dir) { |
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var file = path.join(dir, 'browserslist-stats.json') |
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return isFile(file) ? file : undefined |
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}) |
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} |
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if (typeof stats === 'string') { |
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try { |
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stats = JSON.parse(fs.readFileSync(stats)) |
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} catch (e) { |
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throw new BrowserslistError('Can\'t read ' + stats) |
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} |
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} |
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if (stats && 'dataByBrowser' in stats) { |
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stats = stats.dataByBrowser |
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} |
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return stats |
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}, |
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loadConfig: function loadConfig (opts) { |
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if (process.env.BROWSERSLIST) { |
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return process.env.BROWSERSLIST |
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} else if (opts.config || process.env.BROWSERSLIST_CONFIG) { |
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var file = opts.config || process.env.BROWSERSLIST_CONFIG |
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if (path.basename(file) === 'package.json') { |
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return pickEnv(parsePackage(file), opts) |
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} else { |
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return pickEnv(module.exports.readConfig(file), opts) |
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} |
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} else if (opts.path) { |
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return pickEnv(module.exports.findConfig(opts.path), opts) |
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} else { |
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return undefined |
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} |
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}, |
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loadCountry: function loadCountry (usage, country) { |
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var code = country.replace(/[^\w-]/g, '') |
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if (!usage[code]) { |
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// eslint-disable-next-line security/detect-non-literal-require |
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var compressed = require('caniuse-lite/data/regions/' + code + '.js') |
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var data = region(compressed) |
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usage[country] = { } |
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for (var i in data) { |
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for (var j in data[i]) { |
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usage[country][i + ' ' + j] = data[i][j] |
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} |
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} |
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} |
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}, |
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parseConfig: function parseConfig (string) { |
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var result = { defaults: [] } |
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var sections = ['defaults'] |
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string.toString() |
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.replace(/#[^\n]*/g, '') |
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.split(/\n|,/) |
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.map(function (line) { |
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return line.trim() |
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}) |
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.filter(function (line) { |
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return line !== '' |
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}) |
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.forEach(function (line) { |
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if (IS_SECTION.test(line)) { |
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sections = line.match(IS_SECTION)[1].trim().split(' ') |
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sections.forEach(function (section) { |
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if (result[section]) { |
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throw new BrowserslistError( |
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'Duplicate section ' + section + ' in Browserslist config') |
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} |
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result[section] = [] |
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}) |
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} else { |
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sections.forEach(function (section) { |
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result[section].push(line) |
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}) |
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} |
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}) |
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return result |
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}, |
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readConfig: function readConfig (file) { |
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if (!isFile(file)) { |
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throw new BrowserslistError('Can\'t read ' + file + ' config') |
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} |
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return module.exports.parseConfig(fs.readFileSync(file)) |
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}, |
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findConfig: function findConfig (from) { |
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from = path.resolve(from) |
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var cacheKey = isFile(from) ? path.dirname(from) : from |
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if (cacheKey in configCache) { |
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return configCache[cacheKey] |
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} |
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var resolved = eachParent(from, function (dir) { |
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var config = path.join(dir, 'browserslist') |
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var pkg = path.join(dir, 'package.json') |
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var rc = path.join(dir, '.browserslistrc') |
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var pkgBrowserslist |
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if (isFile(pkg)) { |
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try { |
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pkgBrowserslist = parsePackage(pkg) |
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} catch (e) { |
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if (e.name === 'BrowserslistError') throw e |
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console.warn( |
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'[Browserslist] Could not parse ' + pkg + '. Ignoring it.') |
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} |
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} |
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if (isFile(config) && pkgBrowserslist) { |
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throw new BrowserslistError( |
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dir + ' contains both browserslist and package.json with browsers') |
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} else if (isFile(rc) && pkgBrowserslist) { |
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throw new BrowserslistError( |
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dir + ' contains both .browserslistrc and package.json with browsers') |
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} else if (isFile(config) && isFile(rc)) { |
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throw new BrowserslistError( |
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dir + ' contains both .browserslistrc and browserslist') |
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} else if (isFile(config)) { |
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return module.exports.readConfig(config) |
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} else if (isFile(rc)) { |
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return module.exports.readConfig(rc) |
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} else { |
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return pkgBrowserslist |
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} |
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}) |
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if (!process.env.BROWSERSLIST_DISABLE_CACHE) { |
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configCache[cacheKey] = resolved |
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} |
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return resolved |
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}, |
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clearCaches: function clearCaches () { |
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dataTimeChecked = false |
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filenessCache = { } |
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configCache = { } |
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}, |
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oldDataWarning: function oldDataWarning (agentsObj) { |
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if (dataTimeChecked) return |
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dataTimeChecked = true |
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var latest = latestReleaseTime(agentsObj) |
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var halfYearAgo = Date.now() - TIME_TO_UPDATE_CANIUSE |
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if (latest !== 0 && latest < halfYearAgo) { |
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var command = 'npm update' |
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eachParent(__filename, function (dir) { |
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var pckg = path.join(dir, 'package.json') |
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var yarnLock = path.join(dir, 'yarn.lock') |
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if (isFile(pckg) && isFile(yarnLock)) { |
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command = 'yarn upgrade' |
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} |
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}) |
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console.warn( |
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'Browserslist: caniuse-lite is outdated. ' + |
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'Please run next command `' + command + ' caniuse-lite browserslist`') |
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} |
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}, |
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currentNode: function currentNode () { |
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return 'node ' + process.versions.node |
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} |
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}
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