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PATH: usr / local / lib / node_modules / gulp / node_modules / yargs / lib

var fs = require('fs')
var path = require('path')
var assign = require('./assign')
var YError = require('./yerror')

var previouslyVisitedConfigs = []

function checkForCircularExtends (path) {
  if (previouslyVisitedConfigs.indexOf(path) > -1) {
    throw new YError("Circular extended configurations: '" + path + "'.")
  }
}

function getPathToDefaultConfig (cwd, pathToExtend) {
  return path.resolve(cwd, pathToExtend)
}

function applyExtends (config, cwd, subKey) {
  var defaultConfig = {}

if (config.hasOwnProperty('extends')) {
    var pathToDefault = getPathToDefaultConfig(cwd, config.extends)

checkForCircularExtends(pathToDefault)

previouslyVisitedConfigs.push(pathToDefault)
    delete config.extends

defaultConfig = JSON.parse(fs.readFileSync(pathToDefault, 'utf8'))
    if (subKey) {
      defaultConfig = defaultConfig[subKey] || {}
    }
    defaultConfig = applyExtends(defaultConfig, path.dirname(pathToDefault), subKey)
  }

previouslyVisitedConfigs = []

return assign(defaultConfig, config)
}

module.exports = applyExtends

[-] apply-extends.js [edit]
[-] obj-filter.js [edit]
[-] usage.js [edit]
[-] completion.js [edit]
[+] ..
[-] validation.js [edit]
[-] argsert.js [edit]
[-] command.js [edit]
[-] levenshtein.js [edit]
[-] yerror.js [edit]
[-] assign.js [edit]