plugins.js
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// ------------------------------------
// # POSTCSS - LOAD PLUGINS - PLUGINS
// ------------------------------------
'use strict'
/**
* @method plugins
*
* @param {Object} config PostCSS Config
*
* @return {Array} plugins PostCSS Plugins
*/
module.exports = function plugins (config) {
var plugins = []
if (Array.isArray(config.plugins)) {
plugins = config.plugins.filter(Boolean)
if (plugins.length && plugins.length > 0) {
plugins.forEach(function (plugin, i) {
if (!plugin) throw new Error('Loading PostCSS Plugin failed')
if (plugin.postcss) plugin = plugin.postcss
if (plugin.default) plugin = plugin.default
if (
!(typeof plugin === 'object' && Array.isArray(plugin.plugins) ||
typeof plugin === 'function')
) {
throw new TypeError('Invalid PostCSS Plugin found: ' + '[' + i + ']')
}
})
}
return plugins
} else {
config = config.plugins
var load = function (plugin, options) {
if (options === null || Object.keys(options).length === 0) {
try {
return require(plugin)
} catch (err) {
err.message = 'Loading PostCSS Plugin failed: ' + err.message
throw err
}
} else {
try {
return require(plugin)(options)
} catch (err) {
err.message = 'Loading PostCSS Plugin failed: ' + err.message
throw err
}
}
}
Object.keys(config)
.filter(function (plugin) {
return config[plugin] !== false ? plugin : ''
})
.forEach(function (plugin, i) {
plugin = load(plugin, config[plugin])
if (plugin.postcss) plugin = plugin.postcss
if (plugin.default) plugin = plugin.default
if (
!(typeof plugin === 'object' && Array.isArray(plugin.plugins) ||
typeof plugin === 'function')
) {
throw new TypeError('Invalid PostCSS Plugin found: ' + '[' + i + ']')
}
return plugins.push(plugin)
})
return plugins
}
}