Function wrapWorkerFn

packager/src/ModuleGraph/worker/wrap-worker-fn.js:33–60

(
  workerFunction: WorkerFn<Options>,
)

) => void;

function wrapWorkerFn<Options>(
  workerFunction: WorkerFn<Options>,
): WorkerFnWithIO<Options> {
  return (
    infile: Path,
    outfile: Path,
    options: Options,
    callback: Callback<>,
  ) => {
    const contents = fs.readFileSync(infile);
    workerFunction(contents, options, (error, result) => {
      if (error) {
        callback(error);
        return;
      }

      try {
        mkdirp.sync(dirname(outfile));
        fs.writeFileSync(outfile, JSON.stringify(result), 'utf8');
      } catch (writeError) {
        callback(writeError);
        return;
      }

      callback(null);
    });
  };
}

module.exports = wrapWorkerFn;