getArguments()

in src/program.js [136:202]

• 39 lines of code
• 11 McCabe index (conditional complexity)

  getArguments() {
    // To support looking up required parameters via config files, we need to
    // temporarily disable the requiredArguments validation. Otherwise yargs
    // would exit early. Validation is enforced by the checkRequiredArguments()
    // method, after reading configuration files.
    //
    // This is an undocumented internal API of yargs! Unit tests to avoid
    // regressions are located at: tests/functional/test.cli.sign.js
    //
    // Replace hack if possible:  https://github.com/mozilla/web-ext/issues/1930
    const validationInstance = this.yargs
      .getInternalMethods()
      .getValidationInstance();
    const { requiredArguments } = validationInstance;
    // Initialize demandedOptions (which is going to be set to an object with one
    // property for each mandatory global options, then the arrow function below
    // will receive as its demandedOptions parameter a new one that also includes
    // all mandatory options for the sub command selected).
    this.demandedOptions = this.yargs.getDemandedOptions();
    validationInstance.requiredArguments = (args, demandedOptions) => {
      this.demandedOptions = demandedOptions;
    };
    let argv;
    try {
      argv = this.yargs.argv;
    } catch (err) {
      if (
        err.name === 'YError' &&
        err.message.startsWith('Unknown argument: ')
      ) {
        throw new UsageError(err.message);
      }
      throw err;
    }
    validationInstance.requiredArguments = requiredArguments;

    // Yargs boolean options doesn't define the no* counterpart
    // with negate-boolean on Yargs 15. Define as expected by the
    // web-ext execute method.
    if (argv.configDiscovery != null) {
      argv.noConfigDiscovery = !argv.configDiscovery;
    }
    if (argv.reload != null) {
      argv.noReload = !argv.reload;
    }

    // Yargs doesn't accept --no-input as a valid option if there isn't a
    // --input option defined to be negated, to fix that the --input is
    // defined and hidden from the yargs help output and we define here
    // the negated argument name that we expect to be set in the parsed
    // arguments (and fix https://github.com/mozilla/web-ext/issues/1860).
    if (argv.input != null) {
      argv.noInput = !argv.input;
    }

    // Replacement for the "requiresArg: true" parameter until the following bug
    // is fixed: https://github.com/yargs/yargs/issues/1098
    if (argv.ignoreFiles && !argv.ignoreFiles.length) {
      throw new UsageError('Not enough arguments following: ignore-files');
    }

    if (argv.startUrl && !argv.startUrl.length) {
      throw new UsageError('Not enough arguments following: start-url');
    }

    return argv;
  }