code: function parseOptions(options={}, vinylCjsDeps) {
  	const _options = Object.assign({
  		gulp: vinylCjsDeps.gulp || require('gulp'),
  		base: options.cwd || process.cwd(),
  		cwd: options.base || process.cwd(),
  		internalOnly: false,
  		debugVcjd: false
  	}, options);
  
  	_options.mapper = Object.assign({}, options.mapper || {});
  	_options.lookup = new Map(options.lookup || []);
  	_options.resolver = createResolver(options);
  
  	return _options;
  }
docs: Parse the src options adding defaults.
  
  @param {object} options			Options object.
  @param {Object} vinylCjsDeps		The module.
  @returns {Object}				Mutated options (defaults added).