private async runCommand()

in src/docgen/view/_npm.ts [111:141]

• 30 lines of code
• 2 McCabe index (conditional complexity)

  private async runCommand<T = Buffer>(
    command: string,
    args: readonly string[],
    outputTransform: (stderr: readonly Buffer[]) => T,
    options?: SpawnOptionsWithoutStdio,
  ): Promise<CommandResult<T>> {
    return new Promise<CommandResult<T>>((ok, ko) => {
      const child = spawn(command, args, { ...options, stdio: ['inherit', 'pipe', 'pipe'] });
      const stdout = new Array<Buffer>();
      child.stdout.on('data', (chunk) => {
        stdout.push(Buffer.from(chunk));
      });
      child.stderr.on('data', (chunk) => {
        stdout.push(Buffer.from(chunk));
      });

      child.once('error', ko);
      child.once('close', (exitCode, signal) => {
        try {
          ok({
            command: `${command} ${args.join(' ')}`,
            exitCode,
            signal,
            stdout: outputTransform(stdout),
          });
        } catch (error) {
          ko(error);
        }
      });
    });
  }