stylePreprocessors.ts — vue Source File

Source Code

import merge from 'merge-source-map'
import { RawSourceMap } from 'source-map'
import { isFunction } from 'shared/util'

export type StylePreprocessor = (
  source: string,
  map: RawSourceMap | undefined,
  options: {
    [key: string]: any
    additionalData?: string | ((source: string, filename: string) => string)
    filename: string
  }
) => StylePreprocessorResults

export interface StylePreprocessorResults {
  code: string
  map?: object
  errors: Error[]
  dependencies: string[]
}

// .scss/.sass processor
const scss: StylePreprocessor = (source, map, options) => {
  const nodeSass = require('sass')
  const finalOptions = {
    ...options,
    data: getSource(source, options.filename, options.additionalData),
    file: options.filename,
    outFile: options.filename,
    sourceMap: !!map
  }

  try {
    const result = nodeSass.renderSync(finalOptions)
    const dependencies = result.stats.includedFiles
    if (map) {
      return {
        code: result.css.toString(),
        map: merge(map, JSON.parse(result.map.toString())),
        errors: [],
        dependencies
      }
    }

    return { code: result.css.toString(), errors: [], dependencies }
  } catch (e: any) {
    return { code: '', errors: [e], dependencies: [] }
  }
}

const sass: StylePreprocessor = (source, map, options) =>
  scss(source, map, {
    ...options,
    indentedSyntax: true
  })

// .less
const less: StylePreprocessor = (source, map, options) => {
  const nodeLess = require('less')

// ... (76 more lines)