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'use strict'
const resolve = require('path').resolve
const config = require('lilconfig')
const yaml = require('yaml')
const loadOptions = require('./options.js')
const loadPlugins = require('./plugins.js')
/* istanbul ignore next */
const interopRequireDefault = (obj) => obj && obj.__esModule ? obj : { default: obj }
/**
* Process the result from cosmiconfig
*
* @param {Object} ctx Config Context
* @param {Object} result Cosmiconfig result
*
* @return {Object} PostCSS Config
*/
const processResult = (ctx, result) => {
const file = result.filepath || ''
let config = interopRequireDefault(result.config).default || {}
if (typeof config === 'function') {
config = config(ctx)
} else {
config = Object.assign({}, config, ctx)
}
if (!config.plugins) {
config.plugins = []
}
return {
plugins: loadPlugins(config, file),
options: loadOptions(config, file),
file: file
}
}
/**
* Builds the Config Context
*
* @param {Object} ctx Config Context
*
* @return {Object} Config Context
*/
const createContext = (ctx) => {
/**
* @type {Object}
*
* @prop {String} cwd=process.cwd() Config search start location
* @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`
*/
ctx = Object.assign({
cwd: process.cwd(),
env: process.env.NODE_ENV
}, ctx)
if (!ctx.env) {
process.env.NODE_ENV = 'development'
}
return ctx
}
const addTypeScriptLoader = (options = {}, loader) => {
const moduleName = 'postcss'
return {
...options,
searchPlaces: [
...(options.searchPlaces || []),
'package.json',
`.${moduleName}rc`,
`.${moduleName}rc.json`,
`.${moduleName}rc.yaml`,
`.${moduleName}rc.yml`,
`.${moduleName}rc.ts`,
`.${moduleName}rc.js`,
`.${moduleName}rc.cjs`,
`${moduleName}.config.ts`,
`${moduleName}.config.js`,
`${moduleName}.config.cjs`
],
loaders: {
...options.loaders,
'.yaml': (filepath, content) => yaml.parse(content),
'.yml': (filepath, content) => yaml.parse(content),
'.ts': loader
}
}
}
const withTypeScriptLoader = (rcFunc) => {
return (ctx, path, options) => {
return rcFunc(ctx, path, addTypeScriptLoader(options, (configFile) => {
let registerer = { enabled () {} }
try {
// Register TypeScript compiler instance
registerer = require('ts-node').register()
return require(configFile)
} catch (err) {
if (err.code === 'MODULE_NOT_FOUND') {
throw new Error(
`'ts-node' is required for the TypeScript configuration files. Make sure it is installed\nError: ${err.message}`
)
}
throw err
} finally {
registerer.enabled(false)
}
}))
}
}
/**
* Load Config
*
* @method rc
*
* @param {Object} ctx Config Context
* @param {String} path Config Path
* @param {Object} options Config Options
*
* @return {Promise} config PostCSS Config
*/
const rc = withTypeScriptLoader((ctx, path, options) => {
/**
* @type {Object} The full Config Context
*/
ctx = createContext(ctx)
/**
* @type {String} `process.cwd()`
*/
path = path ? resolve(path) : process.cwd()
return config.lilconfig('postcss', options)
.search(path)
.then((result) => {
if (!result) {
throw new Error(`No PostCSS Config found in: ${path}`)
}
return processResult(ctx, result)
})
})
rc.sync = withTypeScriptLoader((ctx, path, options) => {
/**
* @type {Object} The full Config Context
*/
ctx = createContext(ctx)
/**
* @type {String} `process.cwd()`
*/
path = path ? resolve(path) : process.cwd()
const result = config.lilconfigSync('postcss', options).search(path)
if (!result) {
throw new Error(`No PostCSS Config found in: ${path}`)
}
return processResult(ctx, result)
})
/**
* Autoload Config for PostCSS
*
* @author Michael Ciniawsky @michael-ciniawsky <michael.ciniawsky@gmail.com>
* @license MIT
*
* @module postcss-load-config
* @version 2.1.0
*
* @requires comsiconfig
* @requires ./options
* @requires ./plugins
*/
module.exports = rc
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