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天文台pc/tianwentai-ui/node_modules/@emotion/babel-plugin/src/utils/source-maps.js 1.07 KB
bc518174   王天杨   提交两个项目文件
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  import { SourceMapGenerator } from 'source-map'
  import convert from 'convert-source-map'
  
  function getGeneratorOpts(file) {
    return file.opts.generatorOpts ? file.opts.generatorOpts : file.opts
  }
  
  export function makeSourceMapGenerator(file) {
    const generatorOpts = getGeneratorOpts(file)
    const filename = generatorOpts.sourceFileName
    const generator = new SourceMapGenerator({
      file: filename,
      sourceRoot: generatorOpts.sourceRoot
    })
  
    generator.setSourceContent(filename, file.code)
    return generator
  }
  
  export function getSourceMap(
    offset /*: {
      line: number,
      column: number
    } */,
    state
  ) /*: string */ {
    const generator = makeSourceMapGenerator(state.file)
    const generatorOpts = getGeneratorOpts(state.file)
    if (
      generatorOpts.sourceFileName &&
      generatorOpts.sourceFileName !== 'unknown'
    ) {
      generator.addMapping({
        generated: {
          line: 1,
          column: 0
        },
        source: generatorOpts.sourceFileName,
        original: offset
      })
      return convert.fromObject(generator).toComment({ multiline: true })
    }
    return ''
  }