AlkantarClanX12
Current Path : /opt/alt/alt-nodejs12/root/lib/node_modules/npm/node_modules.bundled/yargs/lib/ |
Current File : //opt/alt/alt-nodejs12/root/lib/node_modules/npm/node_modules.bundled/yargs/lib/apply-extends.js |
'use strict' const fs = require('fs') const path = require('path') const YError = require('./yerror') let previouslyVisitedConfigs = [] function checkForCircularExtends (cfgPath) { if (previouslyVisitedConfigs.indexOf(cfgPath) > -1) { throw new YError(`Circular extended configurations: '${cfgPath}'.`) } } function getPathToDefaultConfig (cwd, pathToExtend) { return path.resolve(cwd, pathToExtend) } function mergeDeep (config1, config2) { const target = {} const isObject = obj => obj && typeof obj === 'object' && !Array.isArray(obj) Object.assign(target, config1) for (let key of Object.keys(config2)) { if (isObject(config2[key]) && isObject(target[key])) { target[key] = mergeDeep(config1[key], config2[key]) } else { target[key] = config2[key] } } return target } function applyExtends (config, cwd, mergeExtends) { let defaultConfig = {} if (Object.prototype.hasOwnProperty.call(config, 'extends')) { if (typeof config.extends !== 'string') return defaultConfig const isPath = /\.json|\..*rc$/.test(config.extends) let pathToDefault = null if (!isPath) { try { pathToDefault = require.resolve(config.extends) } catch (err) { // most likely this simply isn't a module. } } else { pathToDefault = getPathToDefaultConfig(cwd, config.extends) } // maybe the module uses key for some other reason, // err on side of caution. if (!pathToDefault && !isPath) return config checkForCircularExtends(pathToDefault) previouslyVisitedConfigs.push(pathToDefault) defaultConfig = isPath ? JSON.parse(fs.readFileSync(pathToDefault, 'utf8')) : require(config.extends) delete config.extends defaultConfig = applyExtends(defaultConfig, path.dirname(pathToDefault), mergeExtends) } previouslyVisitedConfigs = [] return mergeExtends ? mergeDeep(defaultConfig, config) : Object.assign({}, defaultConfig, config) } module.exports = applyExtends