Function startCommand

test/jest/util/startSnykCLI.ts:163–206

(
  command: string,
  args: string[],
  {
    startTimeout = DEFAULT_ASSERTION_TIMEOUT,
    ...options
  }: StartCommandOptions = {},
)

};

export const startCommand = async (
  command: string,
  args: string[],
  {
    startTimeout = DEFAULT_ASSERTION_TIMEOUT,
    ...options
  }: StartCommandOptions = {},
): Promise<TestCLI> => {
  const child = spawn(command, args, options);
  return new Promise((resolve, reject) => {
    const onTimeout = () => {
      cleanup();
      reject(new AssertionTimeoutError('startCommand', startTimeout));
    };
    const onError = (err) => {
      cleanup();
      reject(err);
    };
    const onSpawn = () => {
      cleanup();
      resolve(createTestCLI(child));
    };
    const cleanup = () => {
      child.removeListener('error', onError);
      child.removeListener('spawn', onSpawn);
      clearTimeout(timeoutId);
    };

    const timeoutId = setTimeout(onTimeout, startTimeout);
    child.once('error', onError);
    child.once('spawn', onSpawn);

    if (!SUPPORTS_SPAWN_EVENT) {
      const onInterval = () => {
        if (child.stdout.readable) {
          clearInterval(intervalId);
          onSpawn();
        }
      };
      const intervalId = setInterval(onInterval, 100);
      onInterval(); // check immediately
    }
  });
};

/**
 * Starts Snyk CLI and provides a test wrapper for performing typical actions