Method handleValidationAndGetResult

lib/command.ts:413–483

(
    isDefaultCommand: boolean,
    commandHandler: CommandHandler,
    innerArgv: Arguments | Promise<Arguments>,
    currentContext: Context,
    aliases: Dictionary<string[]>,
    yargs: YargsInstance,
    middlewares: Middleware[],
    positionalMap: Dictionary<string[]>
  )

    return `$0 ${pc.join(' ')}`;
  }
  private handleValidationAndGetResult(
    isDefaultCommand: boolean,
    commandHandler: CommandHandler,
    innerArgv: Arguments | Promise<Arguments>,
    currentContext: Context,
    aliases: Dictionary<string[]>,
    yargs: YargsInstance,
    middlewares: Middleware[],
    positionalMap: Dictionary<string[]>
  ) {
    // we apply validation post-hoc, so that custom
    // checks get passed populated positional arguments.
    if (!yargs.getInternalMethods().getHasOutput()) {
      const validation = yargs
        .getInternalMethods()
        .runValidation(
          aliases,
          positionalMap,
          (yargs.parsed as DetailedArguments).error,
          isDefaultCommand
        );
      innerArgv = maybeAsyncResult<Arguments>(innerArgv, result => {
        validation(result);
        return result;
      });
    }

    if (commandHandler.handler && !yargs.getInternalMethods().getHasOutput()) {
      yargs.getInternalMethods().setHasOutput();
      // to simplify the parsing of positionals in commands,
      // we temporarily populate '--' rather than _, with arguments
      const populateDoubleDash =
        !!yargs.getOptions().configuration['populate--'];
      yargs
        .getInternalMethods()
        .postProcess(innerArgv, populateDoubleDash, false, false);

      innerArgv = applyMiddleware(innerArgv, yargs, middlewares, false);
      innerArgv = maybeAsyncResult<Arguments>(innerArgv, result => {
        const handlerResult = commandHandler.handler(result as Arguments);
        return isPromise(handlerResult)
          ? handlerResult.then(() => result)
          : result;
      });

      if (!isDefaultCommand) {
        yargs.getInternalMethods().getUsageInstance().cacheHelpMessage();
      }

      if (
        isPromise(innerArgv) &&
        !yargs.getInternalMethods().hasParseCallback()
      ) {
        innerArgv.catch(error => {
          try {
            yargs.getInternalMethods().getUsageInstance().fail(null, error);
          } catch (_err) {
            // If .fail(false) is not set, and no parse cb() has been