Function extractSourcemapFromFile

packages/utils/src/source-map/node.ts:11–23

(
  code: string,
  filePath: string,
)

// based on vite
// https://github.com/vitejs/vite/blob/84079a84ad94de4c1ef4f1bdb2ab448ff2c01196/packages/vite/src/node/server/sourcemap.ts#L149
export function extractSourcemapFromFile(
  code: string,
  filePath: string,
): ExtractedSourceMap | undefined {
  const map = (
    convertSourceMap.fromSource(code)
    || convertSourceMap.fromMapFileSource(
      code,
      createConvertSourceMapReadMap(filePath),
    )
  )?.toObject()
  return map ? { map } : undefined
}

function createConvertSourceMapReadMap(originalFileName: string) {
  return (filename: string) => {