Function runTask

build-system/task-runner/amp-task-runner.js:89–109

* Runs an AMP task with logging and timing after installing its subpackages. * @param {string} taskName * @param {TaskFuncDef} taskFunc * @return {Promise }

(taskName, taskFunc)

 * @return {Promise<void>}
 */
async function runTask(taskName, taskFunc) {
  const taskFile = path.relative(os.homedir(), 'amp.js');
  log('Using task file', magenta(taskFile));
  const start = Date.now();
  try {
    log(`Starting '${cyan(taskName)}'...`);
    await taskFunc();
    log('Finished', `'${cyan(taskName)}'`, 'after', magenta(getTime(start)));
    // For some reason, the `e2e` and `unit` tasks get stuck on CircleCI after
    // testing is finishing, despite reaching this point in the code. This is a
    // temporary workaround until we understand exactly why and fix the root
    // cause. TODO(@ampproject/wg-infra): fix this.
    if (isCircleciBuild() && ['e2e', 'unit'].includes(taskName)) {
      process.exit(); // process.exitCode is set in ../tasks/e2e/index.js:171
    }
  } catch (err) {
    log(`'${cyan(taskName)}'`, red('errored after'), magenta(getTime(start)));
    log(err);
    process.exit(1);
  }
}

/**
 * Prints an error if the task file and / or function are invalid, and exits.