GIF89a=( õ' 7IAXKgNgYvYx\%wh…hŽth%ˆs%—x¨}9®Œ©€&©‰%¶†(¹–.¹5·œD¹&Çš)ÇŸ5ǘ;Í£*È¡&Õ²)ׯ7×µ<Ñ»4ï°3ø‘HÖ§KͯT÷¨Yÿšqÿ»qÿÔFØ !ù ' !ÿ NETSCAPE2.0 , =( þÀ“pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§gª«ªE¯°¨¬ª±²Œ¹º¹E¾­”´ÂB¶¯ §Åȸ»ÑD¾¿Á•ÄÅ®° ÝH¾ÒLÀÆDÙ«D¶BÝïðÀ¾DÑÑÔTÌÍíH òGö¨A RÎڐ |¥ ٭&ºìE8œ¹kGÔAÞpx­a¶­ã R2XB®åE8I€Õ6Xî:vT)äžþÀq¦è³¥ì仕F~%xñ  4#ZÔ‰O|-4Bs‘X:= QÉ œš lºÒyXJŠGȦ|s hÏíK–3l7·B|¥$'7Jީܪ‰‡àá”Dæn=Pƒ ¤Òëí‰`䌨ljóá¯Éüv>á–Á¼5 ½.69ûϸd«­ºÀûnlv©‹ªîf{¬ÜãPbŸ  l5‘Ž¯pß ´ ˜3aÅùäI«O’ý·‘áÞ‡˜¾Æ‚ÙÏiÇÿ‹Àƒ #öó)pâš Þ½ ‘Ý{ó)vmÞü%D~ 6f s}ŃƒDØW Eþ`‡þ À…L8xá†ç˜{)x`X/> Ì}mø‚–RØ‘*|`D=‚Ø_ ^ð5 !_…'aä“OÚ—7âcð`D”Cx`ÝÂ¥ä‹éY¹—F¼¤¥Š?¡Õ™ n@`} lď’ÄÉ@4>ñd œ à‘vÒxNÃ×™@žd=ˆgsžG±æ ´²æud &p8Qñ)ˆ«lXD©øÜéAžHìySun jª×k*D¤LH] †¦§C™Jä–´Xb~ʪwStŽ6K,°£qÁœ:9ت:¨þªl¨@¡`‚ûÚ ».Û¬¯t‹ÆSÉ[:°=Š‹„‘Nåû”Ìî{¿ÂA ‡Rà›ÀÙ6úë°Ÿð0Ä_ ½;ÃϱîÉì^ÇÛÇ#Ëë¼ôº!±Ä˜íUîÅÇ;0L1óÁµö«p% AÀºU̬ݵ¼á%霼€‡¯Á~`ÏG¯»À× ­²± =4ªnpð3¾¤³¯­ü¾¦îuÙuµÙ®|%2ÊIÿür¦#0·ÔJ``8È@S@5ê¢ ö×Þ^`8EÜ]ý.뜃Âç 7 ú ȉÞj œ½Dç zý¸iþœÑÙûÄë!ˆÞÀl§Ïw‹*DçI€nEX¯¬¼ &A¬Go¼QföõFç°¯;é¦÷îŽêJ°îúôF5¡ÌQ|îúöXªæ»TÁÏyñêï]ê² o óÎC=öõ›ÒÓPB@ D×½œä(>èCÂxŽ`±«Ÿ–JЀ»Û á¤±p+eE0`ëŽ`A Ú/NE€Ø†À9‚@¤à H½7”à‡%B‰`Àl*ƒó‘–‡8 2ñ%¸ —€:Ù1Á‰E¸àux%nP1ð!‘ðC)¾P81lÑɸF#ˆ€{´âé°ÈB„0>±û °b¡Š´±O‚3È–Ù()yRpbµ¨E.Z‘D8ÊH@% òŒx+%Ù˜Æcü »¸˜fõ¬b·d`Fê™8èXH"ÉÈ-±|1Ô6iI, 2““¬$+](A*jÐ QTÂo‰.ÛU슬Œã„Ž`¯SN¡–¶Äåyše¯ª’­¬‚´b¦Éož œ)åyâ@Ì®3 ÎtT̉°&Ø+žLÀf"Ø-|žçÔ>‡Ðv¦Ðžì\‚ Q1)Ž@Žh#aP72”ˆ™¨$‚ !ù " , =( …7IAXG]KgNgYvYxR"k\%w]'}hŽth%ˆg+ˆs%—r.—m3šx3˜x¨}9®€&©€+¨‡7§‰%¶†(¹–.¹œD¹&ǘ;Í•&ײ)×»4ïÌ6ò§KÍ þ@‘pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g «¬ E ±± ¨­¶°ººE Á´”·®C¬²§Ç¶Œ»ÓDÃÕƷ¯Ê±H½ºM×ÁGÚ¬D¶BËÁ½î½DÓôTÏÛßîG»ôõC×CÌ l&âž:'òtU³6ɹ#·Ø)€'Ü.6±&ëÍÈ» K(8p0N?!æ2"ÛˆNIJX>R¼ÐO‚M '¡¨2¸*Ÿþ>#n↠å@‚<[:¡Iïf’ ¤TÚ˘CdbÜÙ“[«ŽEú5MBo¤×@€`@„€Êt W-3 ¶Ÿ¡BíêäjIÝ…Eò9[T…$íêﯧ„…•s»Óȳ¹€ÅÚdc®UUρ#±Ùïldj?´í¼²`\ŽÁðÞu|3'ÖŒ]ë6 ¶S#²‡˜FKLÈ *N E´‘áäŠ$˜›eÄYD„ºq«.è촁ƒs \-ÔjA 9²õ÷å- üúM[Âx(ís÷ì®x€|í¡Ù’p¦‚ ŽkÛTÇDpE@WÜ ²Ç]kŠ1¨ þ€·Yb ÓÁ‰l°*n0 ç™—žzBdОu¾7ĉBl€â‰-ºx~|UåU‰  h*Hœ|e"#"?vpÄiŠe6^ˆ„+qâŠm8 #VÇá ‘å–ÄV„œ|Šè•m"сœn|@›U¶ÆΞ—Špb¥G¨ED”€±Úê2FÌIç? >Éxå Œ± ¡¤„%‘žjŸ‘ꄯ<Ìaà9ijÐ2˜D¦È&›†Z`‚å]wþ¼Â:ç6àB¤7eFJ|õÒ§Õ,¨äàFÇ®cS·Ê¶+B°,‘Þ˜ºNûãØ>PADÌHD¹æž«ÄÀnÌ¥}­#Ë’ë QÀÉSÌÂÇ2ÌXÀ{æk²lQÁ2«ÊðÀ¯w|2Í h‹ÄÂG€,m¾¶ë3ÐÙ6-´ÅE¬L°ÆIij*K½ÀÇqï`DwVÍQXœÚÔpeœ±¬Ñ q˜§Tœ½µƒ°Œìu Â<¶aØ*At¯lmEØ ü ôÛN[P1ÔÛ¦­±$ÜÆ@`ùåDpy¶yXvCAyåB`ŽD¶ 0QwG#¯ æš[^Äþ $ÀÓÝǦ{„L™[±úKÄgÌ;ï£S~¹ìGX.ôgoT.»åˆ°ùŸûù¡?1zö¦Ÿž:ÅgÁ|ìL¹ „®£œŠ‚à0œ]PÁ^p F<"•ç?!,ñ‡N4—…PÄ Á„ö¨Û:Tè@hÀ‹%táÿ:ø-žI<`þ‹p I….)^ 40D#p@ƒj4–؀:²‰1Øâr˜¼F2oW¼#Z†;$Q q” ‘ ÂK¦ñNl#29 !’F@¥Bh·ᏀL!—XFóLH‘Kh¤.«hE&JòG¨¥<™WN!€ÑÙÚˆY„@†>Œž19J" 2,/ &.GXB%ÌRÈ9B6¹W]’î×ÔW¥’IÎ$ ñ‹ÓŒE8YÆ ¼³™ñA5“à®Q.aŸB€&Ø©³ JÁ—! ¦t)K%tœ-¦JF bòNMxLôþ)ÐR¸Ð™‘ èÝ6‘O!THÌ„HÛ ‰ !ù ) , =( …AXKgNgYvYxR"k\%wh…hŽh%ˆg+ˆs%—r.—x3˜x¨}9®€&©€+¨Œ,©‡7§‰%¶†(¹–.¹5·&Çš)ǘ;Í•&×£*Ȳ)ׯ7×»4ï°3øÌ6ò‘HÖ§KÍ»Hó¯T÷¨Yÿ»qÿÇhÿ þÀ”pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g ª« E$±²¨ª­ · °²½$E$ÂÕ««D· Í ¿¦Ç¶¸ÌŒ¾³CÃÅÆ E ééH½MÛÂGâªD­ çBêêϾD²ÒaÀà€Š1r­ðÓ¤ ÔožzU!L˜C'¾yW½UGtäÇïÙllê0×àÂuGþ)AÀs[þ·xì ÁxO%ƒûX2ó—  P£n›R/¡ÑšHše+êDm?# —‘Ç£6¡8íJ¡ŸâDiäªM¥Ö„ôj“¬¹£5oQ7°- <‡ *´lãÓŒ2r/a!l)dÈ A™ÈE¢ôÔ͆…ð ;Ö˜c ¡%ß‚’Ùˆâ¸b½—pe~C"BíëÚHïeF2§æŠ8qb t_`urŠeü wÅu3êæPv§h•"ß`íÍxçLĹÜÖ3á  ~Öº“®›¸ÏMDfJÙ °„ÛµáWõ%§œ‚à©–‚X Ó؁)@®Ñ›Eþ´wëuÅSxb8y\mÖzœ¥§ZbºE—ÂLªÌw!y(>¡™wú=Ç|ÅÝs¢d €CÁW)HÜcC$€L Ä7„r.á\{)@ð` @ äXÈ$PD” `šaG:§æˆOˆ72EÐamn]ù"ŒcÊxÑŒ° &dR8`g«iÙŸLR!¦P …d’ä¡“¦ðÎTƒ¦ià|À _ ¥ Qi#¦Šg›Æ ›noMµ ›V ã£)p ç£ÎW…š=Âeªk§†j„ ´®1ß²sÉxéW«jšl|0¯B0Û, \jÛ´›6±¬¶C ÛíWþï|ëÙ‹¸ñzĸV {ì;Ýñn¼òVˆm³I¼³.Ðã¤PN¥ ²µ¼„µCã+¹ÍByî£Ñ¾HŸ›ëê 7ìYÆFTk¨SaoaY$Dµœìï¿Ã29RÈkt Çïfñ ÇÒ:ÀÐSp¹3ÇI¨â¥DZÄ ü9Ïýögñ½­uÔ*3)O‘˜Ö[_hv ,àî×Et Ÿé¶BH€ Õ[ü±64M@ÔSÌM7dÐl5-ÄÙU܍´©zߌ3Ô€3ž„ „ ¶ÛPô½5×g› êÚ˜kN„Ý…0Îj4€Ìë°“#{þÕ3S2çKÜ'ợlø¼Ú2K{° {Û¶?žm𸧠ËI¼nEò='êüóºè^üæÃ_Û=°óž‚ì#Oý¿Í'¡½áo..ÏYìnüñCœO±Áa¿¢Kô½o,üÄËbö²çºíï{ËC Ú— "”Ï{ËK ÍÒw„õ±Oz dÕ¨à:$ ƒô—«v»] A#ð «€¿šéz)Rx׿ˆ¥‚d``èw-îyÏf×K!ð€þ­Ð|ìPľ„=Ì`ý(f” 'Pa ¥ÐBJa%Ðâf§„%Š¡}FàáÝ×6>ÉäŠG"éŽè=ø!oŠ°^FP¼Ø©Q„ÀCÙÁ`(Ž\ÄÝ® ©Â$<n@dÄ E#ììUÒI! ‚#lù‹`k¦ÐÇ'Rró’ZýNBÈMF Í[¤+‹ðɈ-áwj¨¥þ8¾rá ,VÂh„"|½œ=×G_¦Ñ™EØ 0i*%̲˜Æda0mV‚k¾)›;„&6 p>ÓjK “¦Ç# âDÂ:ûc?:R Ó¬fÞéI-Ì“•Ã<ä=™Ï7˜3œ¨˜c2ŒW ,ˆ”8(T™P‰F¡Jhç"‚ ; 403WebShell
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Current File : /opt/alt/alt-nodejs16/root/lib/node_modules/npm/node_modules/@npmcli/config/lib/index.js
// TODO: set the scope config from package.json or explicit cli config
const walkUp = require('walk-up-path')
const ini = require('ini')
const nopt = require('nopt')
const mkdirp = require('mkdirp-infer-owner')
const mapWorkspaces = require('@npmcli/map-workspaces')
const rpj = require('read-package-json-fast')
const log = require('proc-log')

/* istanbul ignore next */
const myUid = process.getuid && process.getuid()
/* istanbul ignore next */
const myGid = process.getgid && process.getgid()

const { resolve, dirname, join } = require('path')
const { homedir } = require('os')
const { promisify } = require('util')
const fs = require('fs')
const readFile = promisify(fs.readFile)
const writeFile = promisify(fs.writeFile)
const chmod = promisify(fs.chmod)
const chown = promisify(fs.chown)
const unlink = promisify(fs.unlink)
const stat = promisify(fs.stat)

const hasOwnProperty = (obj, key) =>
  Object.prototype.hasOwnProperty.call(obj, key)

// define a custom getter, but turn into a normal prop
// if we set it.  otherwise it can't be set on child objects
const settableGetter = (obj, key, get) => {
  Object.defineProperty(obj, key, {
    get,
    set (value) {
      Object.defineProperty(obj, key, {
        value,
        configurable: true,
        writable: true,
        enumerable: true,
      })
    },
    configurable: true,
    enumerable: true,
  })
}

const typeDefs = require('./type-defs.js')
const nerfDart = require('./nerf-dart.js')
const envReplace = require('./env-replace.js')
const parseField = require('./parse-field.js')
const typeDescription = require('./type-description.js')
const setEnvs = require('./set-envs.js')

// types that can be saved back to
const confFileTypes = new Set([
  'global',
  'user',
  'project',
])

const confTypes = new Set([
  'default',
  'builtin',
  ...confFileTypes,
  'env',
  'cli',
])

const _loaded = Symbol('loaded')
const _get = Symbol('get')
const _find = Symbol('find')
const _loadObject = Symbol('loadObject')
const _loadFile = Symbol('loadFile')
const _checkDeprecated = Symbol('checkDeprecated')
const _flatten = Symbol('flatten')
const _flatOptions = Symbol('flatOptions')

class Config {
  static get typeDefs () {
    return typeDefs
  }

  constructor ({
    definitions,
    shorthands,
    flatten,
    npmPath,

    // options just to override in tests, mostly
    env = process.env,
    argv = process.argv,
    platform = process.platform,
    execPath = process.execPath,
    cwd = process.cwd(),
  }) {
    // turn the definitions into nopt's weirdo syntax
    this.definitions = definitions
    const types = {}
    const defaults = {}
    this.deprecated = {}
    for (const [key, def] of Object.entries(definitions)) {
      defaults[key] = def.default
      types[key] = def.type
      if (def.deprecated) {
        this.deprecated[key] = def.deprecated.trim().replace(/\n +/, '\n')
      }
    }

    // populated the first time we flatten the object
    this[_flatOptions] = null
    this[_flatten] = flatten
    this.types = types
    this.shorthands = shorthands
    this.defaults = defaults

    this.npmPath = npmPath
    this.argv = argv
    this.env = env
    this.execPath = execPath
    this.platform = platform
    this.cwd = cwd

    // set when we load configs
    this.globalPrefix = null
    this.localPrefix = null

    // defaults to env.HOME, but will always be *something*
    this.home = null

    // set up the prototype chain of config objects
    const wheres = [...confTypes]
    this.data = new Map()
    let parent = null
    for (const where of wheres) {
      this.data.set(where, parent = new ConfigData(parent))
    }

    this.data.set = () => {
      throw new Error('cannot change internal config data structure')
    }
    this.data.delete = () => {
      throw new Error('cannot change internal config data structure')
    }

    this.sources = new Map([])

    this.list = []
    for (const { data } of this.data.values()) {
      this.list.unshift(data)
    }
    Object.freeze(this.list)

    this[_loaded] = false
  }

  get loaded () {
    return this[_loaded]
  }

  get prefix () {
    return this[_get]('global') ? this.globalPrefix : this.localPrefix
  }

  // return the location where key is found.
  find (key) {
    if (!this.loaded) {
      throw new Error('call config.load() before reading values')
    }
    return this[_find](key)
  }

  [_find] (key) {
    // have to look in reverse order
    const entries = [...this.data.entries()]
    for (let i = entries.length - 1; i > -1; i--) {
      const [where, { data }] = entries[i]
      if (hasOwnProperty(data, key)) {
        return where
      }
    }
    return null
  }

  get (key, where) {
    if (!this.loaded) {
      throw new Error('call config.load() before reading values')
    }
    return this[_get](key, where)
  }

  // we need to get values sometimes, so use this internal one to do so
  // while in the process of loading.
  [_get] (key, where = null) {
    if (where !== null && !confTypes.has(where)) {
      throw new Error('invalid config location param: ' + where)
    }
    const { data } = this.data.get(where || 'cli')
    return where === null || hasOwnProperty(data, key) ? data[key] : undefined
  }

  set (key, val, where = 'cli') {
    if (!this.loaded) {
      throw new Error('call config.load() before setting values')
    }
    if (!confTypes.has(where)) {
      throw new Error('invalid config location param: ' + where)
    }
    this[_checkDeprecated](key)
    const { data } = this.data.get(where)
    data[key] = val

    // this is now dirty, the next call to this.valid will have to check it
    this.data.get(where)[_valid] = null

    // the flat options are invalidated, regenerate next time they're needed
    this[_flatOptions] = null
  }

  get flat () {
    if (this[_flatOptions]) {
      return this[_flatOptions]
    }

    // create the object for flat options passed to deps
    process.emit('time', 'config:load:flatten')
    this[_flatOptions] = {}
    // walk from least priority to highest
    for (const { data } of this.data.values()) {
      this[_flatten](data, this[_flatOptions])
    }
    process.emit('timeEnd', 'config:load:flatten')

    return this[_flatOptions]
  }

  delete (key, where = 'cli') {
    if (!this.loaded) {
      throw new Error('call config.load() before deleting values')
    }
    if (!confTypes.has(where)) {
      throw new Error('invalid config location param: ' + where)
    }
    delete this.data.get(where).data[key]
  }

  async load () {
    if (this.loaded) {
      throw new Error('attempting to load npm config multiple times')
    }

    process.emit('time', 'config:load')
    // first load the defaults, which sets the global prefix
    process.emit('time', 'config:load:defaults')
    this.loadDefaults()
    process.emit('timeEnd', 'config:load:defaults')

    // next load the builtin config, as this sets new effective defaults
    process.emit('time', 'config:load:builtin')
    await this.loadBuiltinConfig()
    process.emit('timeEnd', 'config:load:builtin')

    // cli and env are not async, and can set the prefix, relevant to project
    process.emit('time', 'config:load:cli')
    this.loadCLI()
    process.emit('timeEnd', 'config:load:cli')
    process.emit('time', 'config:load:env')
    this.loadEnv()
    process.emit('timeEnd', 'config:load:env')

    // next project config, which can affect userconfig location
    process.emit('time', 'config:load:project')
    await this.loadProjectConfig()
    process.emit('timeEnd', 'config:load:project')
    // then user config, which can affect globalconfig location
    process.emit('time', 'config:load:user')
    await this.loadUserConfig()
    process.emit('timeEnd', 'config:load:user')
    // last but not least, global config file
    process.emit('time', 'config:load:global')
    await this.loadGlobalConfig()
    process.emit('timeEnd', 'config:load:global')

    // warn if anything is not valid
    process.emit('time', 'config:load:validate')
    this.validate()
    process.emit('timeEnd', 'config:load:validate')

    // set this before calling setEnvs, so that we don't have to share
    // symbols, as that module also does a bunch of get operations
    this[_loaded] = true

    process.emit('time', 'config:load:credentials')
    const reg = this.get('registry')
    const creds = this.getCredentialsByURI(reg)
    // ignore this error because a failed set will strip out anything that
    // might be a security hazard, which was the intention.
    try {
      this.setCredentialsByURI(reg, creds)
    // eslint-disable-next-line no-empty
    } catch (_) {}
    process.emit('timeEnd', 'config:load:credentials')

    // set proper globalPrefix now that everything is loaded
    this.globalPrefix = this.get('prefix')

    process.emit('time', 'config:load:setEnvs')
    this.setEnvs()
    process.emit('timeEnd', 'config:load:setEnvs')

    process.emit('timeEnd', 'config:load')
  }

  loadDefaults () {
    this.loadGlobalPrefix()
    this.loadHome()

    this[_loadObject]({
      ...this.defaults,
      prefix: this.globalPrefix,
    }, 'default', 'default values')

    const { data } = this.data.get('default')

    // the metrics-registry defaults to the current resolved value of
    // the registry, unless overridden somewhere else.
    settableGetter(data, 'metrics-registry', () => this[_get]('registry'))

    // if the prefix is set on cli, env, or userconfig, then we need to
    // default the globalconfig file to that location, instead of the default
    // global prefix.  It's weird that `npm get globalconfig --prefix=/foo`
    // returns `/foo/etc/npmrc`, but better to not change it at this point.
    settableGetter(data, 'globalconfig', () =>
      resolve(this[_get]('prefix'), 'etc/npmrc'))
  }

  loadHome () {
    if (this.env.HOME) {
      return this.home = this.env.HOME
    }
    this.home = homedir()
  }

  loadGlobalPrefix () {
    if (this.globalPrefix) {
      throw new Error('cannot load default global prefix more than once')
    }

    if (this.env.PREFIX) {
      this.globalPrefix = this.env.PREFIX
    } else if (this.platform === 'win32') {
    // c:\node\node.exe --> prefix=c:\node\
      this.globalPrefix = dirname(this.execPath)
    } else {
      // /usr/local/bin/node --> prefix=/usr/local
      this.globalPrefix = dirname(dirname(this.execPath))

      // destdir only is respected on Unix
      if (this.env.DESTDIR) {
        this.globalPrefix = join(this.env.DESTDIR, this.globalPrefix)
      }
    }
  }

  loadEnv () {
    const conf = Object.create(null)
    for (const [envKey, envVal] of Object.entries(this.env)) {
      if (!/^npm_config_/i.test(envKey) || envVal === '') {
        continue
      }
      let key = envKey.slice('npm_config_'.length)
      if (!key.startsWith('//')) { // don't normalize nerf-darted keys
        key = key.replace(/(?!^)_/g, '-') // don't replace _ at the start of the key
          .toLowerCase()
      }
      conf[key] = envVal
    }
    this[_loadObject](conf, 'env', 'environment')
  }

  loadCLI () {
    nopt.invalidHandler = (k, val, type) =>
      this.invalidHandler(k, val, type, 'command line options', 'cli')
    const conf = nopt(this.types, this.shorthands, this.argv)
    nopt.invalidHandler = null
    this.parsedArgv = conf.argv
    delete conf.argv
    this[_loadObject](conf, 'cli', 'command line options')
  }

  get valid () {
    for (const [where, { valid }] of this.data.entries()) {
      if (valid === false || valid === null && !this.validate(where)) {
        return false
      }
    }
    return true
  }

  validate (where) {
    if (!where) {
      let valid = true
      for (const [entryWhere] of this.data.entries()) {
        // no need to validate our defaults, we know they're fine
        // cli was already validated when parsed the first time
        if (entryWhere === 'default' || entryWhere === 'builtin' || entryWhere === 'cli') {
          continue
        }
        const ret = this.validate(entryWhere)
        valid = valid && ret
      }
      return valid
    } else {
      const obj = this.data.get(where)
      obj[_valid] = true

      nopt.invalidHandler = (k, val, type) =>
        this.invalidHandler(k, val, type, obj.source, where)

      nopt.clean(obj.data, this.types, this.typeDefs)

      nopt.invalidHandler = null
      return obj[_valid]
    }
  }

  // Returns true if the value is coming directly from the source defined
  // in default definitions, if the current value for the key config is
  // coming from any other different source, returns false
  isDefault (key) {
    const [defaultType, ...types] = [...confTypes]
    const defaultData = this.data.get(defaultType).data

    return hasOwnProperty(defaultData, key)
      && types.every(type => {
        const typeData = this.data.get(type).data
        return !hasOwnProperty(typeData, key)
      })
  }

  invalidHandler (k, val, type, source, where) {
    log.warn(
      'invalid config',
      k + '=' + JSON.stringify(val),
      `set in ${source}`
    )
    this.data.get(where)[_valid] = false

    if (Array.isArray(type)) {
      if (type.includes(typeDefs.url.type)) {
        type = typeDefs.url.type
      } else {
        /* istanbul ignore if - no actual configs matching this, but
         * path types SHOULD be handled this way, like URLs, for the
         * same reason */
        if (type.includes(typeDefs.path.type)) {
          type = typeDefs.path.type
        }
      }
    }

    const typeDesc = typeDescription(type)
    const oneOrMore = typeDesc.indexOf(Array) !== -1
    const mustBe = typeDesc
      .filter(m => m !== undefined && m !== Array)
    const oneOf = mustBe.length === 1 && oneOrMore ? ' one or more'
      : mustBe.length > 1 && oneOrMore ? ' one or more of:'
      : mustBe.length > 1 ? ' one of:'
      : ''
    const msg = 'Must be' + oneOf
    const desc = mustBe.length === 1 ? mustBe[0]
      : mustBe.filter(m => m !== Array)
        .map(n => typeof n === 'string' ? n : JSON.stringify(n))
        .join(', ')
    log.warn('invalid config', msg, desc)
  }

  [_loadObject] (obj, where, source, er = null) {
    const conf = this.data.get(where)
    if (conf.source) {
      const m = `double-loading "${where}" configs from ${source}, ` +
        `previously loaded from ${conf.source}`
      throw new Error(m)
    }

    if (this.sources.has(source)) {
      const m = `double-loading config "${source}" as "${where}", ` +
        `previously loaded as "${this.sources.get(source)}"`
      throw new Error(m)
    }

    conf.source = source
    this.sources.set(source, where)
    if (er) {
      conf.loadError = er
      if (er.code !== 'ENOENT') {
        log.verbose('config', `error loading ${where} config`, er)
      }
    } else {
      conf.raw = obj
      for (const [key, value] of Object.entries(obj)) {
        const k = envReplace(key, this.env)
        const v = this.parseField(value, k)
        if (where !== 'default') {
          this[_checkDeprecated](k, where, obj, [key, value])
        }
        conf.data[k] = v
      }
    }
  }

  [_checkDeprecated] (key, where, obj, kv) {
    // XXX(npm9+) make this throw an error
    if (this.deprecated[key]) {
      log.warn('config', key, this.deprecated[key])
    }
  }

  // Parse a field, coercing it to the best type available.
  parseField (f, key, listElement = false) {
    return parseField(f, key, this, listElement)
  }

  async [_loadFile] (file, type) {
    process.emit('time', 'config:load:file:' + file)
    // only catch the error from readFile, not from the loadObject call
    await readFile(file, 'utf8').then(
      data => this[_loadObject](ini.parse(data), type, file),
      er => this[_loadObject](null, type, file, er)
    )
    process.emit('timeEnd', 'config:load:file:' + file)
  }

  loadBuiltinConfig () {
    return this[_loadFile](resolve(this.npmPath, 'npmrc'), 'builtin')
  }

  async loadProjectConfig () {
    // the localPrefix can be set by the CLI config, but otherwise is
    // found by walking up the folder tree. either way, we load it before
    // we return to make sure localPrefix is set
    await this.loadLocalPrefix()

    if (this[_get]('global') === true || this[_get]('location') === 'global') {
      this.data.get('project').source = '(global mode enabled, ignored)'
      this.sources.set(this.data.get('project').source, 'project')
      return
    }

    const projectFile = resolve(this.localPrefix, '.npmrc')
    // if we're in the ~ directory, and there happens to be a node_modules
    // folder (which is not TOO uncommon, it turns out), then we can end
    // up loading the "project" config where the "userconfig" will be,
    // which causes some calamaties.  So, we only load project config if
    // it doesn't match what the userconfig will be.
    if (projectFile !== this[_get]('userconfig')) {
      return this[_loadFile](projectFile, 'project')
    } else {
      this.data.get('project').source = '(same as "user" config, ignored)'
      this.sources.set(this.data.get('project').source, 'project')
    }
  }

  async loadLocalPrefix () {
    const cliPrefix = this[_get]('prefix', 'cli')
    if (cliPrefix) {
      this.localPrefix = cliPrefix
      return
    }

    const cliWorkspaces = this[_get]('workspaces', 'cli')
    const isGlobal = this[_get]('global') || this[_get]('location') === 'global'

    for (const p of walkUp(this.cwd)) {
      const hasNodeModules = await stat(resolve(p, 'node_modules'))
        .then((st) => st.isDirectory())
        .catch(() => false)

      const hasPackageJson = await stat(resolve(p, 'package.json'))
        .then((st) => st.isFile())
        .catch(() => false)

      if (!this.localPrefix && (hasNodeModules || hasPackageJson)) {
        this.localPrefix = p

        // if workspaces are disabled, or we're in global mode, return now
        if (cliWorkspaces === false || isGlobal) {
          return
        }

        // otherwise, continue the loop
        continue
      }

      if (this.localPrefix && hasPackageJson) {
        // if we already set localPrefix but this dir has a package.json
        // then we need to see if `p` is a workspace root by reading its package.json
        // however, if reading it fails then we should just move on
        const pkg = await rpj(resolve(p, 'package.json')).catch(() => false)
        if (!pkg) {
          continue
        }

        const workspaces = await mapWorkspaces({ cwd: p, pkg })
        for (const w of workspaces.values()) {
          if (w === this.localPrefix) {
            // see if there's a .npmrc file in the workspace, if so log a warning
            const hasNpmrc = await stat(resolve(this.localPrefix, '.npmrc'))
              .then((st) => st.isFile())
              .catch(() => false)

            if (hasNpmrc) {
              log.warn(`ignoring workspace config at ${this.localPrefix}/.npmrc`)
            }

            // set the workspace in the default layer, which allows it to be overridden easily
            const { data } = this.data.get('default')
            data.workspace = [this.localPrefix]
            this.localPrefix = p
            log.info(`found workspace root at ${this.localPrefix}`)
            // we found a root, so we return now
            return
          }
        }
      }
    }

    if (!this.localPrefix) {
      this.localPrefix = this.cwd
    }
  }

  loadUserConfig () {
    return this[_loadFile](this[_get]('userconfig'), 'user')
  }

  loadGlobalConfig () {
    return this[_loadFile](this[_get]('globalconfig'), 'global')
  }

  async save (where) {
    if (!this.loaded) {
      throw new Error('call config.load() before saving')
    }
    if (!confFileTypes.has(where)) {
      throw new Error('invalid config location param: ' + where)
    }
    const conf = this.data.get(where)
    conf[_raw] = { ...conf.data }
    conf[_loadError] = null

    // upgrade auth configs to more secure variants before saving
    if (where === 'user') {
      const reg = this.get('registry')
      const creds = this.getCredentialsByURI(reg)
      // we ignore this error because the failed set already removed
      // anything that might be a security hazard, and it won't be
      // saved back to the .npmrc file, so we're good.
      try {
        this.setCredentialsByURI(reg, creds)
      // eslint-disable-next-line no-empty
      } catch (_) {}
    }

    const iniData = ini.stringify(conf.data).trim() + '\n'
    if (!iniData.trim()) {
      // ignore the unlink error (eg, if file doesn't exist)
      await unlink(conf.source).catch(er => {})
      return
    }
    const dir = dirname(conf.source)
    await mkdirp(dir)
    await writeFile(conf.source, iniData, 'utf8')
    // don't leave a root-owned config file lying around
    /* istanbul ignore if - this is best-effort and a pita to test */
    if (myUid === 0) {
      const st = await stat(dir).catch(() => null)
      if (st && (st.uid !== myUid || st.gid !== myGid)) {
        await chown(conf.source, st.uid, st.gid).catch(() => {})
      }
    }
    const mode = where === 'user' ? 0o600 : 0o666
    await chmod(conf.source, mode)
  }

  clearCredentialsByURI (uri) {
    const nerfed = nerfDart(uri)
    const def = nerfDart(this.get('registry'))
    if (def === nerfed) {
      // do not delete email, that shouldn't be nerfed any more.
      // just delete the nerfed copy, if one exists.
      this.delete(`-authtoken`, 'user')
      this.delete(`_authToken`, 'user')
      this.delete(`_authtoken`, 'user')
      this.delete(`_auth`, 'user')
      this.delete(`_password`, 'user')
      this.delete(`username`, 'user')
    }
    this.delete(`${nerfed}:_authToken`, 'user')
    this.delete(`${nerfed}:_auth`, 'user')
    this.delete(`${nerfed}:_password`, 'user')
    this.delete(`${nerfed}:username`, 'user')
    this.delete(`${nerfed}:email`, 'user')
    this.delete(`${nerfed}:certfile`, 'user')
    this.delete(`${nerfed}:keyfile`, 'user')
  }

  setCredentialsByURI (uri, { token, username, password, email, certfile, keyfile }) {
    const nerfed = nerfDart(uri)
    const def = nerfDart(this.get('registry'))

    if (def === nerfed) {
      // remove old style auth info not limited to a single registry
      this.delete('_password', 'user')
      this.delete('username', 'user')
      this.delete('_auth', 'user')
      this.delete('_authtoken', 'user')
      this.delete('-authtoken', 'user')
      this.delete('_authToken', 'user')
    }

    // email used to be nerfed always.  if we're using the default
    // registry, de-nerf it.
    if (nerfed === def) {
      email = email ||
        this.get('email', 'user') ||
        this.get(`${nerfed}:email`, 'user')
      if (email) {
        this.set('email', email, 'user')
      }
    }

    // field that hasn't been used as documented for a LONG time,
    // and as of npm 7.10.0, isn't used at all.  We just always
    // send auth if we have it, only to the URIs under the nerf dart.
    this.delete(`${nerfed}:always-auth`, 'user')

    this.delete(`${nerfed}:email`, 'user')
    if (certfile && keyfile) {
      this.set(`${nerfed}:certfile`, certfile, 'user')
      this.set(`${nerfed}:keyfile`, keyfile, 'user')
      // cert/key may be used in conjunction with other credentials, thus no `else`
    }
    if (token) {
      this.set(`${nerfed}:_authToken`, token, 'user')
      this.delete(`${nerfed}:_password`, 'user')
      this.delete(`${nerfed}:username`, 'user')
    } else if (username || password) {
      if (!username) {
        throw new Error('must include username')
      }
      if (!password) {
        throw new Error('must include password')
      }
      this.delete(`${nerfed}:_authToken`, 'user')
      this.set(`${nerfed}:username`, username, 'user')
      // note: not encrypted, no idea why we bothered to do this, but oh well
      // protects against shoulder-hacks if password is memorable, I guess?
      const encoded = Buffer.from(password, 'utf8').toString('base64')
      this.set(`${nerfed}:_password`, encoded, 'user')
    } else if (!certfile || !keyfile) {
      throw new Error('No credentials to set.')
    }
  }

  // this has to be a bit more complicated to support legacy data of all forms
  getCredentialsByURI (uri) {
    const nerfed = nerfDart(uri)
    const creds = {}

    const deprecatedAuthWarning = [
      '`_auth`, `_authToken`, `username` and `_password` must be scoped to a registry.',
      'see `npm help npmrc` for more information.',
    ].join(' ')

    const email = this.get(`${nerfed}:email`) || this.get('email')
    if (email) {
      creds.email = email
    }

    const certfileReg = this.get(`${nerfed}:certfile`)
    const keyfileReg = this.get(`${nerfed}:keyfile`)
    if (certfileReg && keyfileReg) {
      creds.certfile = certfileReg
      creds.keyfile = keyfileReg
      // cert/key may be used in conjunction with other credentials, thus no `return`
    }

    const defaultToken = nerfDart(this.get('registry')) && this.get('_authToken')
    const tokenReg = this.get(`${nerfed}:_authToken`) || defaultToken

    if (tokenReg) {
      if (tokenReg === defaultToken) {
        log.warn('config', deprecatedAuthWarning)
      }
      creds.token = tokenReg
      return creds
    }

    const userReg = this.get(`${nerfed}:username`)
    const passReg = this.get(`${nerfed}:_password`)
    if (userReg && passReg) {
      creds.username = userReg
      creds.password = Buffer.from(passReg, 'base64').toString('utf8')
      const auth = `${creds.username}:${creds.password}`
      creds.auth = Buffer.from(auth, 'utf8').toString('base64')
      return creds
    }

    const authReg = this.get(`${nerfed}:_auth`)
    if (authReg) {
      const authDecode = Buffer.from(authReg, 'base64').toString('utf8')
      const authSplit = authDecode.split(':')
      creds.username = authSplit.shift()
      creds.password = authSplit.join(':')
      creds.auth = authReg
      return creds
    }

    // at this point, we can only use the values if the URI is the
    // default registry.
    const defaultNerf = nerfDart(this.get('registry'))
    if (nerfed !== defaultNerf) {
      return creds
    }

    const userDef = this.get('username')
    const passDef = this.get('_password')
    if (userDef && passDef) {
      log.warn('config', deprecatedAuthWarning)
      creds.username = userDef
      creds.password = Buffer.from(passDef, 'base64').toString('utf8')
      const auth = `${creds.username}:${creds.password}`
      creds.auth = Buffer.from(auth, 'utf8').toString('base64')
      return creds
    }

    // Handle the old-style _auth=<base64> style for the default
    // registry, if set.
    const auth = this.get('_auth')
    if (!auth) {
      return creds
    }

    log.warn('config', deprecatedAuthWarning)
    const authDecode = Buffer.from(auth, 'base64').toString('utf8')
    const authSplit = authDecode.split(':')
    creds.username = authSplit.shift()
    creds.password = authSplit.join(':')
    creds.auth = auth
    return creds
  }

  // set up the environment object we have with npm_config_* environs
  // for all configs that are different from their default values, and
  // set EDITOR and HOME.
  setEnvs () {
    setEnvs(this)
  }
}

const _data = Symbol('data')
const _raw = Symbol('raw')
const _loadError = Symbol('loadError')
const _source = Symbol('source')
const _valid = Symbol('valid')
class ConfigData {
  constructor (parent) {
    this[_data] = Object.create(parent && parent.data)
    this[_source] = null
    this[_loadError] = null
    this[_raw] = null
    this[_valid] = true
  }

  get data () {
    return this[_data]
  }

  get valid () {
    return this[_valid]
  }

  set source (s) {
    if (this[_source]) {
      throw new Error('cannot set ConfigData source more than once')
    }
    this[_source] = s
  }

  get source () {
    return this[_source]
  }

  set loadError (e) {
    if (this[_loadError] || this[_raw]) {
      throw new Error('cannot set ConfigData loadError after load')
    }
    this[_loadError] = e
  }

  get loadError () {
    return this[_loadError]
  }

  set raw (r) {
    if (this[_raw] || this[_loadError]) {
      throw new Error('cannot set ConfigData raw after load')
    }
    this[_raw] = r
  }

  get raw () {
    return this[_raw]
  }
}

module.exports = Config

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