addFormatOption method

void addFormatOption()

Adds the --format option.

In the kFormatJson mode a command prints a single JSON object in the standard output, all other messages go to the error output.

Implementation

void addFormatOption() => addOption(
      kFormat,
      help: 'Output format.',
      allowed: const [kFormatText, kFormatJson],
      allowedHelp: const {
        kFormatText: 'Human readable output.',
        kFormatJson: 'Single JSON object in stdout '
            '(all other messages go to stderr).',
      },
      defaultsTo: kFormatText,
    );