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| var jsReleases = require('node-releases/data/processed/envs.json')var agents = require('caniuse-lite/dist/unpacker/agents').agentsvar e2c = require('electron-to-chromium/versions')var jsEOL = require('node-releases/data/release-schedule/release-schedule.json')var path = require('path')var BrowserslistError = require('./error')var env = require('./node')var parseWithoutCache = require('./parse') // Will load browser.js in webpackvar YEAR = 365.259641 * 24 * 60 * 60 * 1000var ANDROID_EVERGREEN_FIRST = '37'var OP_MOB_BLINK_FIRST = 14// Helpersfunction isVersionsMatch(versionA, versionB) {  return (versionA + '.').indexOf(versionB + '.') === 0}function isEolReleased(name) {  var version = name.slice(1)  return browserslist.nodeVersions.some(function (i) {    return isVersionsMatch(i, version)  })}function normalize(versions) {  return versions.filter(function (version) {    return typeof version === 'string'  })}function normalizeElectron(version) {  var versionToUse = version  if (version.split('.').length === 3) {    versionToUse = version.split('.').slice(0, -1).join('.')  }  return versionToUse}function nameMapper(name) {  return function mapName(version) {    return name + ' ' + version  }}function getMajor(version) {  return parseInt(version.split('.')[0])}function getMajorVersions(released, number) {  if (released.length === 0) return []  var majorVersions = uniq(released.map(getMajor))  var minimum = majorVersions[majorVersions.length - number]  if (!minimum) {    return released  }  var selected = []  for (var i = released.length - 1; i >= 0; i--) {    if (minimum > getMajor(released[i])) break    selected.unshift(released[i])  }  return selected}function uniq(array) {  var filtered = []  for (var i = 0; i < array.length; i++) {    if (filtered.indexOf(array[i]) === -1) filtered.push(array[i])  }  return filtered}function fillUsage(result, name, data) {  for (var i in data) {    result[name + ' ' + i] = data[i]  }}function generateFilter(sign, version) {  version = parseFloat(version)  if (sign === '>') {    return function (v) {      return parseLatestFloat(v) > version    }  } else if (sign === '>=') {    return function (v) {      return parseLatestFloat(v) >= version    }  } else if (sign === '<') {    return function (v) {      return parseFloat(v) < version    }  } else {    return function (v) {      return parseFloat(v) <= version    }  }  function parseLatestFloat(v) {    return parseFloat(v.split('-')[1] || v)  }}function generateSemverFilter(sign, version) {  version = version.split('.').map(parseSimpleInt)  version[1] = version[1] || 0  version[2] = version[2] || 0  if (sign === '>') {    return function (v) {      v = v.split('.').map(parseSimpleInt)      return compareSemver(v, version) > 0    }  } else if (sign === '>=') {    return function (v) {      v = v.split('.').map(parseSimpleInt)      return compareSemver(v, version) >= 0    }  } else if (sign === '<') {    return function (v) {      v = v.split('.').map(parseSimpleInt)      return compareSemver(version, v) > 0    }  } else {    return function (v) {      v = v.split('.').map(parseSimpleInt)      return compareSemver(version, v) >= 0    }  }}function parseSimpleInt(x) {  return parseInt(x)}function compare(a, b) {  if (a < b) return -1  if (a > b) return +1  return 0}function compareSemver(a, b) {  return (    compare(parseInt(a[0]), parseInt(b[0])) ||    compare(parseInt(a[1] || '0'), parseInt(b[1] || '0')) ||    compare(parseInt(a[2] || '0'), parseInt(b[2] || '0'))  )}// this follows the npm-like semver behaviorfunction semverFilterLoose(operator, range) {  range = range.split('.').map(parseSimpleInt)  if (typeof range[1] === 'undefined') {    range[1] = 'x'  }  // ignore any patch version because we only return minor versions  // range[2] = 'x'  switch (operator) {    case '<=':      return function (version) {        version = version.split('.').map(parseSimpleInt)        return compareSemverLoose(version, range) <= 0      }    case '>=':    default:      return function (version) {        version = version.split('.').map(parseSimpleInt)        return compareSemverLoose(version, range) >= 0      }  }}// this follows the npm-like semver behaviorfunction compareSemverLoose(version, range) {  if (version[0] !== range[0]) {    return version[0] < range[0] ? -1 : +1  }  if (range[1] === 'x') {    return 0  }  if (version[1] !== range[1]) {    return version[1] < range[1] ? -1 : +1  }  return 0}function resolveVersion(data, version) {  if (data.versions.indexOf(version) !== -1) {    return version  } else if (browserslist.versionAliases[data.name][version]) {    return browserslist.versionAliases[data.name][version]  } else {    return false  }}function normalizeVersion(data, version) {  var resolved = resolveVersion(data, version)  if (resolved) {    return resolved  } else if (data.versions.length === 1) {    return data.versions[0]  } else {    return false  }}function filterByYear(since, context) {  since = since / 1000  return Object.keys(agents).reduce(function (selected, name) {    var data = byName(name, context)    if (!data) return selected    var versions = Object.keys(data.releaseDate).filter(function (v) {      var date = data.releaseDate[v]      return date !== null && date >= since    })    return selected.concat(versions.map(nameMapper(data.name)))  }, [])}function cloneData(data) {  return {    name: data.name,    versions: data.versions,    released: data.released,    releaseDate: data.releaseDate  }}function byName(name, context) {  name = name.toLowerCase()  name = browserslist.aliases[name] || name  if (context.mobileToDesktop && browserslist.desktopNames[name]) {    var desktop = browserslist.data[browserslist.desktopNames[name]]    if (name === 'android') {      return normalizeAndroidData(cloneData(browserslist.data[name]), desktop)    } else {      var cloned = cloneData(desktop)      cloned.name = name      return cloned    }  }  return browserslist.data[name]}function normalizeAndroidVersions(androidVersions, chromeVersions) {  var iFirstEvergreen = chromeVersions.indexOf(ANDROID_EVERGREEN_FIRST)  return androidVersions    .filter(function (version) {      return /^(?:[2-4]\.|[34]$)/.test(version)    })    .concat(chromeVersions.slice(iFirstEvergreen))}function copyObject(obj) {  var copy = {}  for (var key in obj) {    copy[key] = obj[key]  }  return copy}function normalizeAndroidData(android, chrome) {  android.released = normalizeAndroidVersions(android.released, chrome.released)  android.versions = normalizeAndroidVersions(android.versions, chrome.versions)  android.releaseDate = copyObject(android.releaseDate)  android.released.forEach(function (v) {    if (android.releaseDate[v] === undefined) {      android.releaseDate[v] = chrome.releaseDate[v]    }  })  return android}function checkName(name, context) {  var data = byName(name, context)  if (!data) throw new BrowserslistError('Unknown browser ' + name)  return data}function unknownQuery(query) {  return new BrowserslistError(    'Unknown browser query `' +      query +      '`. ' +      'Maybe you are using old Browserslist or made typo in query.'  )}// Adjusts last X versions queries for some mobile browsers,// where caniuse data jumps from a legacy version to the latestfunction filterJumps(list, name, nVersions, context) {  var jump = 1  switch (name) {    case 'android':      if (context.mobileToDesktop) return list      var released = browserslist.data.chrome.released      jump = released.length - released.indexOf(ANDROID_EVERGREEN_FIRST)      break    case 'op_mob':      var latest = browserslist.data.op_mob.released.slice(-1)[0]      jump = getMajor(latest) - OP_MOB_BLINK_FIRST + 1      break    default:      return list  }  if (nVersions <= jump) {    return list.slice(-1)  }  return list.slice(jump - 1 - nVersions)}function isSupported(flags, withPartial) {  return (    typeof flags === 'string' &&    (flags.indexOf('y') >= 0 || (withPartial && flags.indexOf('a') >= 0))  )}function resolve(queries, context) {  return parseQueries(queries).reduce(function (result, node, index) {    if (node.not && index === 0) {      throw new BrowserslistError(        'Write any browsers query (for instance, `defaults`) ' +          'before `' +          node.query +          '`'      )    }    var type = QUERIES[node.type]    var array = type.select.call(browserslist, context, node).map(function (j) {      var parts = j.split(' ')      if (parts[1] === '0') {        return parts[0] + ' ' + byName(parts[0], context).versions[0]      } else {        return j      }    })    if (node.compose === 'and') {      if (node.not) {        return result.filter(function (j) {          return array.indexOf(j) === -1        })      } else {        return result.filter(function (j) {          return array.indexOf(j) !== -1        })      }    } else {      if (node.not) {        var filter = {}        array.forEach(function (j) {          filter[j] = true        })        return result.filter(function (j) {          return !filter[j]        })      }      return result.concat(array)    }  }, [])}function prepareOpts(opts) {  if (typeof opts === 'undefined') opts = {}  if (typeof opts.path === 'undefined') {    opts.path = path.resolve ? path.resolve('.') : '.'  }  return opts}function prepareQueries(queries, opts) {  if (typeof queries === 'undefined' || queries === null) {    var config = browserslist.loadConfig(opts)    if (config) {      queries = config    } else {      queries = browserslist.defaults    }  }  return queries}function checkQueries(queries) {  if (!(typeof queries === 'string' || Array.isArray(queries))) {    throw new BrowserslistError(      'Browser queries must be an array or string. Got ' + typeof queries + '.'    )  }}var cache = {}var parseCache = {}function browserslist(queries, opts) {  opts = prepareOpts(opts)  queries = prepareQueries(queries, opts)  checkQueries(queries)  var needsPath = parseQueries(queries).some(function (node) {    return QUERIES[node.type].needsPath  })  var context = {    ignoreUnknownVersions: opts.ignoreUnknownVersions,    dangerousExtend: opts.dangerousExtend,    mobileToDesktop: opts.mobileToDesktop,    env: opts.env  }  // Removing to avoid using context.path without marking query as needsPath  if (needsPath) {    context.path = opts.path  }  env.oldDataWarning(browserslist.data)  var stats = env.getStat(opts, browserslist.data)  if (stats) {    context.customUsage = {}    for (var browser in stats) {      fillUsage(context.customUsage, browser, stats[browser])    }  }  var cacheKey = JSON.stringify([queries, context])  if (cache[cacheKey]) return cache[cacheKey]  var result = uniq(resolve(queries, context)).sort(function (name1, name2) {    name1 = name1.split(' ')    name2 = name2.split(' ')    if (name1[0] === name2[0]) {      // assumptions on caniuse data      // 1) version ranges never overlaps      // 2) if version is not a range, it never contains `-`      var version1 = name1[1].split('-')[0]      var version2 = name2[1].split('-')[0]      return compareSemver(version2.split('.'), version1.split('.'))    } else {      return compare(name1[0], name2[0])    }  })  if (!env.env.BROWSERSLIST_DISABLE_CACHE) {    cache[cacheKey] = result  }  return result}function parseQueries(queries) {  var cacheKey = JSON.stringify(queries)  if (cacheKey in parseCache) return parseCache[cacheKey]  var result = parseWithoutCache(QUERIES, queries)  if (!env.env.BROWSERSLIST_DISABLE_CACHE) {    parseCache[cacheKey] = result  }  return result}browserslist.parse = function (queries, opts) {  opts = prepareOpts(opts)  queries = prepareQueries(queries, opts)  checkQueries(queries)  return parseQueries(queries)}// Will be filled by Can I Use data belowbrowserslist.cache = {}browserslist.data = {}browserslist.usage = {  global: {},  custom: null}// Default browsers querybrowserslist.defaults = ['> 0.5%', 'last 2 versions', 'Firefox ESR', 'not dead']// Browser names aliasesbrowserslist.aliases = {  fx: 'firefox',  ff: 'firefox',  ios: 'ios_saf',  explorer: 'ie',  blackberry: 'bb',  explorermobile: 'ie_mob',  operamini: 'op_mini',  operamobile: 'op_mob',  chromeandroid: 'and_chr',  firefoxandroid: 'and_ff',  ucandroid: 'and_uc',  qqandroid: 'and_qq'}// Can I Use only provides a few versions for some browsers (e.g. and_chr).// Fallback to a similar browser for unknown versions// Note op_mob is not included as its chromium versions are not in sync with Opera desktopbrowserslist.desktopNames = {  and_chr: 'chrome',  and_ff: 'firefox',  ie_mob: 'ie',  android: 'chrome' // has extra processing logic}// Aliases to work with joined versions like `ios_saf 7.0-7.1`browserslist.versionAliases = {}browserslist.clearCaches = env.clearCachesbrowserslist.parseConfig = env.parseConfigbrowserslist.readConfig = env.readConfigbrowserslist.findConfigFile = env.findConfigFilebrowserslist.findConfig = env.findConfigbrowserslist.loadConfig = env.loadConfigbrowserslist.coverage = function (browsers, stats) {  var data  if (typeof stats === 'undefined') {    data = browserslist.usage.global  } else if (stats === 'my stats') {    var opts = {}    opts.path = path.resolve ? path.resolve('.') : '.'    var customStats = env.getStat(opts)    if (!customStats) {      throw new BrowserslistError('Custom usage statistics was not provided')    }    data = {}    for (var browser in customStats) {      fillUsage(data, browser, customStats[browser])    }  } else if (typeof stats === 'string') {    if (stats.length > 2) {      stats = stats.toLowerCase()    } else {      stats = stats.toUpperCase()    }    env.loadCountry(browserslist.usage, stats, browserslist.data)    data = browserslist.usage[stats]  } else {    if ('dataByBrowser' in stats) {      stats = stats.dataByBrowser    }    data = {}    for (var name in stats) {      for (var version in stats[name]) {        data[name + ' ' + version] = stats[name][version]      }    }  }  return browsers.reduce(function (all, i) {    var usage = data[i]    if (usage === undefined) {      usage = data[i.replace(/ \S+$/, ' 0')]    }    return all + (usage || 0)  }, 0)}function nodeQuery(context, node) {  var matched = browserslist.nodeVersions.filter(function (i) {    return isVersionsMatch(i, node.version)  })  if (matched.length === 0) {    if (context.ignoreUnknownVersions) {      return []    } else {      throw new BrowserslistError(        'Unknown version ' + node.version + ' of Node.js'      )    }  }  return ['node ' + matched[matched.length - 1]]}function sinceQuery(context, node) {  var year = parseInt(node.year)  var month = parseInt(node.month || '01') - 1  var day = parseInt(node.day || '01')  return filterByYear(Date.UTC(year, month, day, 0, 0, 0), context)}function coverQuery(context, node) {  var coverage = parseFloat(node.coverage)  var usage = browserslist.usage.global  if (node.place) {    if (node.place.match(/^my\s+stats$/i)) {      if (!context.customUsage) {        throw new BrowserslistError('Custom usage statistics was not provided')      }      usage = context.customUsage    } else {      var place      if (node.place.length === 2) {        place = node.place.toUpperCase()      } else {        place = node.place.toLowerCase()      }      env.loadCountry(browserslist.usage, place, browserslist.data)      usage = browserslist.usage[place]    }  }  var versions = Object.keys(usage).sort(function (a, b) {    return usage[b] - usage[a]  })  var coveraged = 0  var result = []  var version  for (var i = 0; i < versions.length; i++) {    version = versions[i]    if (usage[version] === 0) break    coveraged += usage[version]    result.push(version)    if (coveraged >= coverage) break  }  return result}var QUERIES = {  last_major_versions: {    matches: ['versions'],    regexp: /^last\s+(\d+)\s+major\s+versions?$/i,    select: function (context, node) {      return Object.keys(agents).reduce(function (selected, name) {        var data = byName(name, context)        if (!data) return selected        var list = getMajorVersions(data.released, node.versions)        list = list.map(nameMapper(data.name))        list = filterJumps(list, data.name, node.versions, context)        return selected.concat(list)      }, [])    }  },  last_versions: {    matches: ['versions'],    regexp: /^last\s+(\d+)\s+versions?$/i,    select: function (context, node) {      return Object.keys(agents).reduce(function (selected, name) {        var data = byName(name, context)        if (!data) return selected        var list = data.released.slice(-node.versions)        list = list.map(nameMapper(data.name))        list = filterJumps(list, data.name, node.versions, context)        return selected.concat(list)      }, [])    }  },  last_electron_major_versions: {    matches: ['versions'],    regexp: /^last\s+(\d+)\s+electron\s+major\s+versions?$/i,    select: function (context, node) {      var validVersions = getMajorVersions(Object.keys(e2c), node.versions)      return validVersions.map(function (i) {        return 'chrome ' + e2c[i]      })    }  },  last_node_major_versions: {    matches: ['versions'],    regexp: /^last\s+(\d+)\s+node\s+major\s+versions?$/i,    select: function (context, node) {      return getMajorVersions(browserslist.nodeVersions, node.versions).map(        function (version) {          return 'node ' + version        }      )    }  },  last_browser_major_versions: {    matches: ['versions', 'browser'],    regexp: /^last\s+(\d+)\s+(\w+)\s+major\s+versions?$/i,    select: function (context, node) {      var data = checkName(node.browser, context)      var validVersions = getMajorVersions(data.released, node.versions)      var list = validVersions.map(nameMapper(data.name))      list = filterJumps(list, data.name, node.versions, context)      return list    }  },  last_electron_versions: {    matches: ['versions'],    regexp: /^last\s+(\d+)\s+electron\s+versions?$/i,    select: function (context, node) {      return Object.keys(e2c)        .slice(-node.versions)        .map(function (i) {          return 'chrome ' + e2c[i]        })    }  },  last_node_versions: {    matches: ['versions'],    regexp: /^last\s+(\d+)\s+node\s+versions?$/i,    select: function (context, node) {      return browserslist.nodeVersions        .slice(-node.versions)        .map(function (version) {          return 'node ' + version        })    }  },  last_browser_versions: {    matches: ['versions', 'browser'],    regexp: /^last\s+(\d+)\s+(\w+)\s+versions?$/i,    select: function (context, node) {      var data = checkName(node.browser, context)      var list = data.released.slice(-node.versions).map(nameMapper(data.name))      list = filterJumps(list, data.name, node.versions, context)      return list    }  },  unreleased_versions: {    matches: [],    regexp: /^unreleased\s+versions$/i,    select: function (context) {      return Object.keys(agents).reduce(function (selected, name) {        var data = byName(name, context)        if (!data) return selected        var list = data.versions.filter(function (v) {          return data.released.indexOf(v) === -1        })        list = list.map(nameMapper(data.name))        return selected.concat(list)      }, [])    }  },  unreleased_electron_versions: {    matches: [],    regexp: /^unreleased\s+electron\s+versions?$/i,    select: function () {      return []    }  },  unreleased_browser_versions: {    matches: ['browser'],    regexp: /^unreleased\s+(\w+)\s+versions?$/i,    select: function (context, node) {      var data = checkName(node.browser, context)      return data.versions        .filter(function (v) {          return data.released.indexOf(v) === -1        })        .map(nameMapper(data.name))    }  },  last_years: {    matches: ['years'],    regexp: /^last\s+(\d*.?\d+)\s+years?$/i,    select: function (context, node) {      return filterByYear(Date.now() - YEAR * node.years, context)    }  },  since_y: {    matches: ['year'],    regexp: /^since (\d+)$/i,    select: sinceQuery  },  since_y_m: {    matches: ['year', 'month'],    regexp: /^since (\d+)-(\d+)$/i,    select: sinceQuery  },  since_y_m_d: {    matches: ['year', 'month', 'day'],    regexp: /^since (\d+)-(\d+)-(\d+)$/i,    select: sinceQuery  },  popularity: {    matches: ['sign', 'popularity'],    regexp: /^(>=?|<=?)\s*(\d+|\d+\.\d+|\.\d+)%$/,    select: function (context, node) {      var popularity = parseFloat(node.popularity)      var usage = browserslist.usage.global      return Object.keys(usage).reduce(function (result, version) {        if (node.sign === '>') {          if (usage[version] > popularity) {            result.push(version)          }        } else if (node.sign === '<') {          if (usage[version] < popularity) {            result.push(version)          }        } else if (node.sign === '<=') {          if (usage[version] <= popularity) {            result.push(version)          }        } else if (usage[version] >= popularity) {          result.push(version)        }        return result      }, [])    }  },  popularity_in_my_stats: {    matches: ['sign', 'popularity'],    regexp: /^(>=?|<=?)\s*(\d+|\d+\.\d+|\.\d+)%\s+in\s+my\s+stats$/,    select: function (context, node) {      var popularity = parseFloat(node.popularity)      if (!context.customUsage) {        throw new BrowserslistError('Custom usage statistics was not provided')      }      var usage = context.customUsage      return Object.keys(usage).reduce(function (result, version) {        var percentage = usage[version]        if (percentage == null) {          return result        }        if (node.sign === '>') {          if (percentage > popularity) {            result.push(version)          }        } else if (node.sign === '<') {          if (percentage < popularity) {            result.push(version)          }        } else if (node.sign === '<=') {          if (percentage <= popularity) {            result.push(version)          }        } else if (percentage >= popularity) {          result.push(version)        }        return result      }, [])    }  },  popularity_in_config_stats: {    matches: ['sign', 'popularity', 'config'],    regexp: /^(>=?|<=?)\s*(\d+|\d+\.\d+|\.\d+)%\s+in\s+(\S+)\s+stats$/,    select: function (context, node) {      var popularity = parseFloat(node.popularity)      var stats = env.loadStat(context, node.config, browserslist.data)      if (stats) {        context.customUsage = {}        for (var browser in stats) {          fillUsage(context.customUsage, browser, stats[browser])        }      }      if (!context.customUsage) {        throw new BrowserslistError('Custom usage statistics was not provided')      }      var usage = context.customUsage      return Object.keys(usage).reduce(function (result, version) {        var percentage = usage[version]        if (percentage == null) {          return result        }        if (node.sign === '>') {          if (percentage > popularity) {            result.push(version)          }        } else if (node.sign === '<') {          if (percentage < popularity) {            result.push(version)          }        } else if (node.sign === '<=') {          if (percentage <= popularity) {            result.push(version)          }        } else if (percentage >= popularity) {          result.push(version)        }        return result      }, [])    }  },  popularity_in_place: {    matches: ['sign', 'popularity', 'place'],    regexp: /^(>=?|<=?)\s*(\d+|\d+\.\d+|\.\d+)%\s+in\s+((alt-)?\w\w)$/,    select: function (context, node) {      var popularity = parseFloat(node.popularity)      var place = node.place      if (place.length === 2) {        place = place.toUpperCase()      } else {        place = place.toLowerCase()      }      env.loadCountry(browserslist.usage, place, browserslist.data)      var usage = browserslist.usage[place]      return Object.keys(usage).reduce(function (result, version) {        var percentage = usage[version]        if (percentage == null) {          return result        }        if (node.sign === '>') {          if (percentage > popularity) {            result.push(version)          }        } else if (node.sign === '<') {          if (percentage < popularity) {            result.push(version)          }        } else if (node.sign === '<=') {          if (percentage <= popularity) {            result.push(version)          }        } else if (percentage >= popularity) {          result.push(version)        }        return result      }, [])    }  },  cover: {    matches: ['coverage'],    regexp: /^cover\s+(\d+|\d+\.\d+|\.\d+)%$/i,    select: coverQuery  },  cover_in: {    matches: ['coverage', 'place'],    regexp: /^cover\s+(\d+|\d+\.\d+|\.\d+)%\s+in\s+(my\s+stats|(alt-)?\w\w)$/i,    select: coverQuery  },  supports: {    matches: ['supportType', 'feature'],    regexp: /^(?:(fully|partially)\s+)?supports\s+([\w-]+)$/,    select: function (context, node) {      env.loadFeature(browserslist.cache, node.feature)      var withPartial = node.supportType !== 'fully'      var features = browserslist.cache[node.feature]      var result = []      for (var name in features) {        var data = byName(name, context)        // Only check desktop when latest released mobile has support        var iMax = data.released.length - 1        while (iMax >= 0) {          if (data.released[iMax] in features[name]) break          iMax--        }        var checkDesktop =          context.mobileToDesktop &&          name in browserslist.desktopNames &&          isSupported(features[name][data.released[iMax]], withPartial)        data.versions.forEach(function (version) {          var flags = features[name][version]          if (flags === undefined && checkDesktop) {            flags = features[browserslist.desktopNames[name]][version]          }          if (isSupported(flags, withPartial)) {            result.push(name + ' ' + version)          }        })      }      return result    }  },  electron_range: {    matches: ['from', 'to'],    regexp: /^electron\s+([\d.]+)\s*-\s*([\d.]+)$/i,    select: function (context, node) {      var fromToUse = normalizeElectron(node.from)      var toToUse = normalizeElectron(node.to)      var from = parseFloat(node.from)      var to = parseFloat(node.to)      if (!e2c[fromToUse]) {        throw new BrowserslistError('Unknown version ' + from + ' of electron')      }      if (!e2c[toToUse]) {        throw new BrowserslistError('Unknown version ' + to + ' of electron')      }      return Object.keys(e2c)        .filter(function (i) {          var parsed = parseFloat(i)          return parsed >= from && parsed <= to        })        .map(function (i) {          return 'chrome ' + e2c[i]        })    }  },  node_range: {    matches: ['from', 'to'],    regexp: /^node\s+([\d.]+)\s*-\s*([\d.]+)$/i,    select: function (context, node) {      return browserslist.nodeVersions        .filter(semverFilterLoose('>=', node.from))        .filter(semverFilterLoose('<=', node.to))        .map(function (v) {          return 'node ' + v        })    }  },  browser_range: {    matches: ['browser', 'from', 'to'],    regexp: /^(\w+)\s+([\d.]+)\s*-\s*([\d.]+)$/i,    select: function (context, node) {      var data = checkName(node.browser, context)      var from = parseFloat(normalizeVersion(data, node.from) || node.from)      var to = parseFloat(normalizeVersion(data, node.to) || node.to)      function filter(v) {        var parsed = parseFloat(v)        return parsed >= from && parsed <= to      }      return data.released.filter(filter).map(nameMapper(data.name))    }  },  electron_ray: {    matches: ['sign', 'version'],    regexp: /^electron\s*(>=?|<=?)\s*([\d.]+)$/i,    select: function (context, node) {      var versionToUse = normalizeElectron(node.version)      return Object.keys(e2c)        .filter(generateFilter(node.sign, versionToUse))        .map(function (i) {          return 'chrome ' + e2c[i]        })    }  },  node_ray: {    matches: ['sign', 'version'],    regexp: /^node\s*(>=?|<=?)\s*([\d.]+)$/i,    select: function (context, node) {      return browserslist.nodeVersions        .filter(generateSemverFilter(node.sign, node.version))        .map(function (v) {          return 'node ' + v        })    }  },  browser_ray: {    matches: ['browser', 'sign', 'version'],    regexp: /^(\w+)\s*(>=?|<=?)\s*([\d.]+)$/,    select: function (context, node) {      var version = node.version      var data = checkName(node.browser, context)      var alias = browserslist.versionAliases[data.name][version]      if (alias) version = alias      return data.released        .filter(generateFilter(node.sign, version))        .map(function (v) {          return data.name + ' ' + v        })    }  },  firefox_esr: {    matches: [],    regexp: /^(firefox|ff|fx)\s+esr$/i,    select: function () {      return ['firefox 128']    }  },  opera_mini_all: {    matches: [],    regexp: /(operamini|op_mini)\s+all/i,    select: function () {      return ['op_mini all']    }  },  electron_version: {    matches: ['version'],    regexp: /^electron\s+([\d.]+)$/i,    select: function (context, node) {      var versionToUse = normalizeElectron(node.version)      var chrome = e2c[versionToUse]      if (!chrome) {        throw new BrowserslistError(          'Unknown version ' + node.version + ' of electron'        )      }      return ['chrome ' + chrome]    }  },  node_major_version: {    matches: ['version'],    regexp: /^node\s+(\d+)$/i,    select: nodeQuery  },  node_minor_version: {    matches: ['version'],    regexp: /^node\s+(\d+\.\d+)$/i,    select: nodeQuery  },  node_patch_version: {    matches: ['version'],    regexp: /^node\s+(\d+\.\d+\.\d+)$/i,    select: nodeQuery  },  current_node: {    matches: [],    regexp: /^current\s+node$/i,    select: function (context) {      return [env.currentNode(resolve, context)]    }  },  maintained_node: {    matches: [],    regexp: /^maintained\s+node\s+versions$/i,    select: function (context) {      var now = Date.now()      var queries = Object.keys(jsEOL)        .filter(function (key) {          return (            now < Date.parse(jsEOL[key].end) &&            now > Date.parse(jsEOL[key].start) &&            isEolReleased(key)          )        })        .map(function (key) {          return 'node ' + key.slice(1)        })      return resolve(queries, context)    }  },  phantomjs_1_9: {    matches: [],    regexp: /^phantomjs\s+1.9$/i,    select: function () {      return ['safari 5']    }  },  phantomjs_2_1: {    matches: [],    regexp: /^phantomjs\s+2.1$/i,    select: function () {      return ['safari 6']    }  },  browser_version: {    matches: ['browser', 'version'],    regexp: /^(\w+)\s+(tp|[\d.]+)$/i,    select: function (context, node) {      var version = node.version      if (/^tp$/i.test(version)) version = 'TP'      var data = checkName(node.browser, context)      var alias = normalizeVersion(data, version)      if (alias) {        version = alias      } else {        if (version.indexOf('.') === -1) {          alias = version + '.0'        } else {          alias = version.replace(/\.0$/, '')        }        alias = normalizeVersion(data, alias)        if (alias) {          version = alias        } else if (context.ignoreUnknownVersions) {          return []        } else {          throw new BrowserslistError(            'Unknown version ' + version + ' of ' + node.browser          )        }      }      return [data.name + ' ' + version]    }  },  browserslist_config: {    matches: [],    regexp: /^browserslist config$/i,    needsPath: true,    select: function (context) {      return browserslist(undefined, context)    }  },  extends: {    matches: ['config'],    regexp: /^extends (.+)$/i,    needsPath: true,    select: function (context, node) {      return resolve(env.loadQueries(context, node.config), context)    }  },  defaults: {    matches: [],    regexp: /^defaults$/i,    select: function (context) {      return resolve(browserslist.defaults, context)    }  },  dead: {    matches: [],    regexp: /^dead$/i,    select: function (context) {      var dead = [        'Baidu >= 0',        'ie <= 11',        'ie_mob <= 11',        'bb <= 10',        'op_mob <= 12.1',        'samsung 4'      ]      return resolve(dead, context)    }  },  unknown: {    matches: [],    regexp: /^(\w+)$/i,    select: function (context, node) {      if (byName(node.query, context)) {        throw new BrowserslistError(          'Specify versions in Browserslist query for browser ' + node.query        )      } else {        throw unknownQuery(node.query)      }    }  }}// Get and convert Can I Use data;(function () {  for (var name in agents) {    var browser = agents[name]    browserslist.data[name] = {      name: name,      versions: normalize(agents[name].versions),      released: normalize(agents[name].versions.slice(0, -3)),      releaseDate: agents[name].release_date    }    fillUsage(browserslist.usage.global, name, browser.usage_global)    browserslist.versionAliases[name] = {}    for (var i = 0; i < browser.versions.length; i++) {      var full = browser.versions[i]      if (!full) continue      if (full.indexOf('-') !== -1) {        var interval = full.split('-')        for (var j = 0; j < interval.length; j++) {          browserslist.versionAliases[name][interval[j]] = full        }      }    }  }  browserslist.nodeVersions = jsReleases.map(function (release) {    return release.version  })})()module.exports = browserslist
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