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node_modules/postcss/lib/postcss.js 2.83 KB
7820380e   “wangming”   1
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  'use strict'
  
  let CssSyntaxError = require('./css-syntax-error')
  let Declaration = require('./declaration')
  let LazyResult = require('./lazy-result')
  let Container = require('./container')
  let Processor = require('./processor')
  let stringify = require('./stringify')
  let fromJSON = require('./fromJSON')
  let Document = require('./document')
  let Warning = require('./warning')
  let Comment = require('./comment')
  let AtRule = require('./at-rule')
  let Result = require('./result.js')
  let Input = require('./input')
  let parse = require('./parse')
  let list = require('./list')
  let Rule = require('./rule')
  let Root = require('./root')
  let Node = require('./node')
  
  function postcss(...plugins) {
    if (plugins.length === 1 && Array.isArray(plugins[0])) {
      plugins = plugins[0]
    }
    return new Processor(plugins)
  }
  
  postcss.plugin = function plugin(name, initializer) {
    let warningPrinted = false
    function creator(...args) {
      // eslint-disable-next-line no-console
      if (console && console.warn && !warningPrinted) {
        warningPrinted = true
        // eslint-disable-next-line no-console
        console.warn(
          name +
            ': postcss.plugin was deprecated. Migration guide:\n' +
            'https://evilmartians.com/chronicles/postcss-8-plugin-migration'
        )
        if (process.env.LANG && process.env.LANG.startsWith('cn')) {
          /* c8 ignore next 7 */
          // eslint-disable-next-line no-console
          console.warn(
            name +
              ': 里面 postcss.plugin 被弃用. 迁移指南:\n' +
              'https://www.w3ctech.com/topic/2226'
          )
        }
      }
      let transformer = initializer(...args)
      transformer.postcssPlugin = name
      transformer.postcssVersion = new Processor().version
      return transformer
    }
  
    let cache
    Object.defineProperty(creator, 'postcss', {
      get() {
        if (!cache) cache = creator()
        return cache
      }
    })
  
    creator.process = function (css, processOpts, pluginOpts) {
      return postcss([creator(pluginOpts)]).process(css, processOpts)
    }
  
    return creator
  }
  
  postcss.stringify = stringify
  postcss.parse = parse
  postcss.fromJSON = fromJSON
  postcss.list = list
  
  postcss.comment = defaults => new Comment(defaults)
  postcss.atRule = defaults => new AtRule(defaults)
  postcss.decl = defaults => new Declaration(defaults)
  postcss.rule = defaults => new Rule(defaults)
  postcss.root = defaults => new Root(defaults)
  postcss.document = defaults => new Document(defaults)
  
  postcss.CssSyntaxError = CssSyntaxError
  postcss.Declaration = Declaration
  postcss.Container = Container
  postcss.Processor = Processor
  postcss.Document = Document
  postcss.Comment = Comment
  postcss.Warning = Warning
  postcss.AtRule = AtRule
  postcss.Result = Result
  postcss.Input = Input
  postcss.Rule = Rule
  postcss.Root = Root
  postcss.Node = Node
  
  LazyResult.registerPostcss(postcss)
  
  module.exports = postcss
  postcss.default = postcss