Method prepare

src/command.ts:313–386

(options: Options)

   */
  // eslint-disable-next-line @typescript-eslint/no-explicit-any
  public async prepare(options: Options): Promise<void> {
    options = options || {};
    options.project = getInheritedOption(options, "project");

    if (
      !process.stdin.isTTY ||
      getInheritedOption(options, "nonInteractive") ||
      getInheritedOption(options, "json") // --json implies --non-interactive.
    ) {
      options.nonInteractive = true;
    }

    // allow override of detected non-interactive with --interactive flag
    if (getInheritedOption(options, "interactive")) {
      options.nonInteractive = false;
    }

    if (getInheritedOption(options, "debug")) {
      options.debug = true;
    }

    if (!getInheritedOption(options, "json") && !options.isMCP) {
      useConsoleLoggers();
    }

    if (getInheritedOption(options, "config")) {
      options.configPath = getInheritedOption(options, "config");
    }

    const onlyOption = getInheritedOption(options, "only");
    if (onlyOption) {
      // Handle cases where PowerShell replaces commas with spaces.
      // see https://github.com/firebase/firebase-tools/issues/7506
      options.only = onlyOption
        .split(/[\s,]+/)
        .filter(Boolean)
        .join(",");
    }

    const exceptOption = getInheritedOption(options, "except");
    if (exceptOption) {
      // Handle cases where PowerShell replaces commas with spaces.
      // see https://github.com/firebase/firebase-tools/issues/7506
      options.except = exceptOption
        .split(/[\s,]+/)
        .filter(Boolean)
        .join(",");
    }

    try {
      options.config = Config.load(options);
    } catch (e: any) {
      options.configError = e;
    }

    const account = getInheritedOption(options, "account");
    options.account = account;