Function composeSourceMaps

test/test-nested-consumer-usage.js:38–74

(tsMap, babelMap, tsFileName)

};

async function composeSourceMaps(tsMap, babelMap, tsFileName) {
  const tsConsumer = await new SourceMapConsumer(tsMap);
  const babelConsumer = await new SourceMapConsumer(babelMap);
  const map = new SourceMapGenerator();
  babelConsumer.eachMapping(
    ({
      source,
      generatedLine,
      generatedColumn,
      originalLine,
      originalColumn,
      name,
    }) => {
      if (originalLine) {
        const original = tsConsumer.originalPositionFor({
          line: originalLine,
          column: originalColumn,
        });
        if (original.line) {
          map.addMapping({
            generated: {
              line: generatedLine,
              column: generatedColumn,
            },
            original: {
              line: original.line,
              column: original.column,
            },
            source: tsFileName,
            name,
          });
        }
      }
    }
  );
  return map.toJSON();
}

exports["test nested consumer usage"] = async function (assert) {
  await composeSourceMaps(TS_MAP, BABEL_MAP, "blah.tsx");