'use strict'
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const resolve = require('path').resolve
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const config = require('cosmiconfig')
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const loadOptions = require('./options.js')
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const loadPlugins = require('./plugins.js')
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/**
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* Process the result from cosmiconfig
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*
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* @param {Object} ctx Config Context
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* @param {Object} result Cosmiconfig result
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*
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* @return {Object} PostCSS Config
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*/
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const processResult = (ctx, result) => {
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let file = result.filepath || ''
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let config = result.config || {}
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if (typeof config === 'function') {
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config = config(ctx)
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} else {
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config = Object.assign({}, config, ctx)
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}
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if (!config.plugins) {
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config.plugins = []
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}
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return {
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plugins: loadPlugins(config, file),
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options: loadOptions(config, file),
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file: file
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}
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}
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/**
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* Builds the Config Context
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*
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* @param {Object} ctx Config Context
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*
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* @return {Object} Config Context
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*/
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const createContext = (ctx) => {
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/**
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* @type {Object}
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*
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* @prop {String} cwd=process.cwd() Config search start location
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* @prop {String} env=process.env.NODE_ENV Config Enviroment, will be set to `development` by `postcss-load-config` if `process.env.NODE_ENV` is `undefined`
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*/
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ctx = Object.assign({
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cwd: process.cwd(),
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env: process.env.NODE_ENV
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}, ctx)
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if (!ctx.env) {
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process.env.NODE_ENV = 'development'
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}
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return ctx
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}
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/**
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* Load Config
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*
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* @method rc
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*
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* @param {Object} ctx Config Context
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* @param {String} path Config Path
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* @param {Object} options Config Options
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*
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* @return {Promise} config PostCSS Config
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*/
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const rc = (ctx, path, options) => {
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/**
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* @type {Object} The full Config Context
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*/
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ctx = createContext(ctx)
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/**
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* @type {String} `process.cwd()`
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*/
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path = path ? resolve(path) : process.cwd()
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return config('postcss', options)
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.search(path)
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.then((result) => {
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if (!result) {
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throw new Error(`No PostCSS Config found in: ${path}`)
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}
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return processResult(ctx, result)
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})
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}
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rc.sync = (ctx, path, options) => {
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/**
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* @type {Object} The full Config Context
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*/
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ctx = createContext(ctx)
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/**
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* @type {String} `process.cwd()`
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*/
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path = path ? resolve(path) : process.cwd()
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const result = config('postcss', options).searchSync(path)
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if (!result) {
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throw new Error(`No PostCSS Config found in: ${path}`)
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}
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return processResult(ctx, result)
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}
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/**
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* Autoload Config for PostCSS
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*
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* @author Michael Ciniawsky @michael-ciniawsky <michael.ciniawsky@gmail.com>
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* @license MIT
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*
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* @module postcss-load-config
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* @version 2.1.0
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*
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* @requires comsiconfig
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* @requires ./options
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* @requires ./plugins
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*/
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module.exports = rc
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