How to use the fromSource function from convert-source-map

v8-to-istanbul.js

GitHub: aaron-meche/baileo

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const rawSource = this.sources.source || await readFile(this.path, 'utf8')
this.rawSourceMap = this.sources.sourceMap ||
  // if we find a source-map (either inline, or a .map file) we load
  // both the transpiled and original source, both of which are used during
  // the backflips we perform to remap absolute to relative positions.
  convertSourceMap.fromSource(rawSource) || convertSourceMap.fromMapFileSource(rawSource, dirname(this.path))

if (this.rawSourceMap) {
  if (this.rawSourceMap.sourcemap.sources.length > 1) {
    this.sourceMap = new TraceMap(this.rawSourceMap.sourcemap)

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index.js

GitHub: KevinGThomas/SampleHummus

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    output.end(buf);
    return;
}

if (opts.sourceMap) {
    inputMap = convertSourceMap.fromSource(body);
    if (inputMap) inputMap = inputMap.toObject();
    body = convertSourceMap.removeComments(body);
    sourcemapper = new MagicString(body);
}

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