Function timerify

lib/internal/perf/timerify.js:55–107

(fn, options = kEmptyObject)

}

function timerify(fn, options = kEmptyObject) {
  validateFunction(fn, 'fn');

  validateObject(options, 'options');
  const {
    histogram,
  } = options;

  if (histogram !== undefined &&
      (!isHistogram(histogram) || typeof histogram.record !== 'function')) {
    throw new ERR_INVALID_ARG_TYPE(
      'options.histogram',
      'RecordableHistogram',
      histogram);
  }

  function timerified(...args) {
    const isConstructorCall = new.target !== undefined;
    const start = now();
    const result = isConstructorCall ?
      ReflectConstruct(fn, args, fn) :
      ReflectApply(fn, this, args);
    if (!isConstructorCall && typeof result?.finally === 'function') {
      return result.finally(
        FunctionPrototypeBind(
          processComplete,
          result,
          fn.name,
          start,
          args,
          histogram));
    }
    processComplete(fn.name, start, args, histogram);
    return result;
  }

  ObjectDefineProperties(timerified, {
    length: {
      __proto__: null,
      configurable: false,
      enumerable: true,
      value: fn.length,
    },
    name: {
      __proto__: null,
      configurable: false,
      enumerable: true,
      value: `timerified ${fn.name}`,
    },
  });

  return timerified;
}

module.exports = timerify;