Method parseAndUpdateUsage

lib/command.ts:347–393

(
    isDefaultCommand: boolean,
    commandHandler: CommandHandler,
    innerYargs: YargsInstance,
    parentCommands: string[],
    commandIndex: number,
    helpOnly: boolean
  )

    );
  }
  private parseAndUpdateUsage(
    isDefaultCommand: boolean,
    commandHandler: CommandHandler,
    innerYargs: YargsInstance,
    parentCommands: string[],
    commandIndex: number,
    helpOnly: boolean
  ):
    | {aliases: Dictionary<string[]>; innerArgv: Arguments}
    | Promise<{aliases: Dictionary<string[]>; innerArgv: Arguments}> {
    // A null command indicates we are running the default command,
    // if this is the case, we should show the root usage instructions
    // rather than the usage instructions for the nested default command:
    if (isDefaultCommand)
      innerYargs.getInternalMethods().getUsageInstance().unfreeze(true);
    if (this.shouldUpdateUsage(innerYargs)) {
      innerYargs
        .getInternalMethods()
        .getUsageInstance()
        .usage(
          this.usageFromParentCommandsCommandHandler(
            parentCommands,
            commandHandler
          ),
          commandHandler.description
        );
    }
    const innerArgv = innerYargs
      .getInternalMethods()
      .runYargsParserAndExecuteCommands(
        null,
        undefined,
        true,
        commandIndex,
        helpOnly
      );

    return isPromise(innerArgv)
      ? innerArgv.then(argv => ({
          aliases: (innerYargs.parsed as DetailedArguments).aliases,
          innerArgv: argv,
        }))
      : {
          aliases: (innerYargs.parsed as DetailedArguments).aliases,
          innerArgv: innerArgv,
        };
  }
  private shouldUpdateUsage(yargs: YargsInstance) {
    return (
      !yargs.getInternalMethods().getUsageInstance().getUsageDisabled() &&