70 lines
1.9 KiB
JavaScript
70 lines
1.9 KiB
JavaScript
'use strict'
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let LazyResult = require('./lazy-result')
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let Root = require('./root')
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class Processor {
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constructor(plugins = []) {
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this.version = '8.2.9'
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this.plugins = this.normalize(plugins)
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}
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use(plugin) {
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this.plugins = this.plugins.concat(this.normalize([plugin]))
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return this
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}
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process(css, opts = {}) {
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if (
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this.plugins.length === 0 &&
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opts.parser === opts.stringifier &&
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!opts.hideNothingWarning
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) {
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if (process.env.NODE_ENV !== 'production') {
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if (typeof console !== 'undefined' && console.warn) {
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console.warn(
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'You did not set any plugins, parser, or stringifier. ' +
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'Right now, PostCSS does nothing. Pick plugins for your case ' +
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'on https://www.postcss.parts/ and use them in postcss.config.js.'
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)
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}
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}
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}
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return new LazyResult(this, css, opts)
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}
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normalize(plugins) {
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let normalized = []
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for (let i of plugins) {
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if (i.postcss === true) {
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i = i()
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} else if (i.postcss) {
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i = i.postcss
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}
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if (typeof i === 'object' && Array.isArray(i.plugins)) {
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normalized = normalized.concat(i.plugins)
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} else if (typeof i === 'object' && i.postcssPlugin) {
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normalized.push(i)
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} else if (typeof i === 'function') {
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normalized.push(i)
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} else if (typeof i === 'object' && (i.parse || i.stringify)) {
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if (process.env.NODE_ENV !== 'production') {
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throw new Error(
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'PostCSS syntaxes cannot be used as plugins. Instead, please use ' +
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'one of the syntax/parser/stringifier options as outlined ' +
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'in your PostCSS runner documentation.'
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)
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}
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} else {
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throw new Error(i + ' is not a PostCSS plugin')
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}
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}
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return normalized
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}
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}
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module.exports = Processor
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Processor.default = Processor
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Root.registerProcessor(Processor)
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