Function getSuggestion

tests/help.suggestion.test.js:8–32

(program, arg)

// and looking for possible subcommand 'sub'.

function getSuggestion(program, arg) {
  let message = '';
  program
    .showSuggestionAfterError() // make sure on
    .exitOverride()
    .configureOutput({
      writeErr: (str) => {
        message = str;
      },
    });
  // Do the same setup for subcommand.
  const sub = program._findCommand('sub');
  if (sub) sub.copyInheritedSettings(program);

  try {
    // Passing in an array for a few of the tests.
    const args = Array.isArray(arg) ? arg : [arg];
    program.parse(args, { from: 'user' });
  } catch (err) {
    /* empty */
  }

  const match = message.match(/Did you mean (one of )?(.*)\?/);
  return match ? match[2] : null;
}

describe('Command.showSuggestionAfterError()', () => {
  describe('command suggestions', () => {