aaac7fed
 liuqimichale
add
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'use strict'
const req = require('import-cwd')
/**
* Plugin Loader
*
* @private
* @method load
*
* @param {String} plugin PostCSS Plugin Name
* @param {Object} options PostCSS Plugin Options
*
* @return {Function} PostCSS Plugin
*/
const load = (plugin, options, file) => {
if (options === null || Object.keys(options).length === 0) {
try {
return req(plugin)
} catch (err) {
throw new Error(`Loading PostCSS Plugin failed: ${err.message}\n\n(@${file})`)
}
} else {
try {
return req(plugin)(options)
} catch (err) {
throw new Error(`Loading PostCSS Plugin failed: ${err.message}\n\n(@${file})`)
}
}
}
/**
* Load Plugins
*
* @private
* @method plugins
*
* @param {Object} config PostCSS Config Plugins
*
* @return {Array} plugins PostCSS Plugins
*/
const plugins = (config, file) => {
let plugins = []
if (Array.isArray(config.plugins)) {
plugins = config.plugins.filter(Boolean)
} else {
plugins = Object.keys(config.plugins)
.filter((plugin) => {
return config.plugins[plugin] !== false ? plugin : ''
})
.map((plugin) => {
return load(plugin, config.plugins[plugin], file)
})
}
if (plugins.length && plugins.length > 0) {
plugins.forEach((plugin, i) => {
if (plugin.postcss) {
plugin = plugin.postcss
}
if (plugin.default) {
plugin = plugin.default
}
if (
// eslint-disable-next-line
!(typeof plugin === 'object' && Array.isArray(plugin.plugins) ||
typeof plugin === 'function')
) {
throw new TypeError(`Invalid PostCSS Plugin found at: plugins[${i}]\n\n(@${file})`)
}
})
}
return plugins
}
module.exports = plugins
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