Function checkSentinels

build-system/tasks/check-asserts.js:20–44

* Checks that a provided sentinel is/is not contained in a file. * @param {string} filePath JS binary to check * @param {Record } sentinels map from sentinels to whether or not * they should be present * @return {Promise } * @throws if a sentin

(filePath, sentinels)

 * @throws if a sentinel isn't/is present when it should/shouldn't be
 */
async function checkSentinels(filePath, sentinels) {
  const fileContents = await fs.readFile(filePath, 'utf8');

  for (const [sentinel, shouldBePresent] of Object.entries(sentinels)) {
    const isPresent = fileContents.includes(sentinel);

    if (isPresent != shouldBePresent) {
      log(
        red('ERROR:'),
        cyan(filePath),
        shouldBePresent ? 'does not contain' : 'contains',
        `${cyan(sentinel)}.`,
        'Something may be wrong with assertions or compilation.'
      );
      throw new Error('Assertion sentinel check failed');
    }

    log(
      green('SUCCESS:'),
      cyan(sentinel),
      shouldBePresent ? 'found in' : 'not found in',
      cyan(filePath)
    );
  }
}

/**
 * Checks that the file at the provided path does not include devAssert.