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node_modules/postcss/lib/no-work-result.js 2.49 KB
7820380e   “wangming”   1
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  'use strict'
  
  let MapGenerator = require('./map-generator')
  let stringify = require('./stringify')
  let warnOnce = require('./warn-once')
  let parse = require('./parse')
  const Result = require('./result')
  
  class NoWorkResult {
    constructor(processor, css, opts) {
      css = css.toString()
      this.stringified = false
  
      this._processor = processor
      this._css = css
      this._opts = opts
      this._map = undefined
      let root
  
      let str = stringify
      this.result = new Result(this._processor, root, this._opts)
      this.result.css = css
  
      let self = this
      Object.defineProperty(this.result, 'root', {
        get() {
          return self.root
        }
      })
  
      let map = new MapGenerator(str, root, this._opts, css)
      if (map.isMap()) {
        let [generatedCSS, generatedMap] = map.generate()
        if (generatedCSS) {
          this.result.css = generatedCSS
        }
        if (generatedMap) {
          this.result.map = generatedMap
        }
      }
    }
  
    async() {
      if (this.error) return Promise.reject(this.error)
      return Promise.resolve(this.result)
    }
  
    catch(onRejected) {
      return this.async().catch(onRejected)
    }
  
    finally(onFinally) {
      return this.async().then(onFinally, onFinally)
    }
  
    sync() {
      if (this.error) throw this.error
      return this.result
    }
  
    then(onFulfilled, onRejected) {
      if (process.env.NODE_ENV !== 'production') {
        if (!('from' in this._opts)) {
          warnOnce(
            'Without `from` option PostCSS could generate wrong source map ' +
              'and will not find Browserslist config. Set it to CSS file path ' +
              'or to `undefined` to prevent this warning.'
          )
        }
      }
  
      return this.async().then(onFulfilled, onRejected)
    }
  
    toString() {
      return this._css
    }
  
    warnings() {
      return []
    }
  
    get content() {
      return this.result.css
    }
  
    get css() {
      return this.result.css
    }
  
    get map() {
      return this.result.map
    }
  
    get messages() {
      return []
    }
  
    get opts() {
      return this.result.opts
    }
  
    get processor() {
      return this.result.processor
    }
  
    get root() {
      if (this._root) {
        return this._root
      }
  
      let root
      let parser = parse
  
      try {
        root = parser(this._css, this._opts)
      } catch (error) {
        this.error = error
      }
  
      if (this.error) {
        throw this.error
      } else {
        this._root = root
        return root
      }
    }
  
    get [Symbol.toStringTag]() {
      return 'NoWorkResult'
    }
  }
  
  module.exports = NoWorkResult
  NoWorkResult.default = NoWorkResult