kitchensink/examples/node_modules/has-flag/index.js

Dispatch's awesome components and style guide

'use strict';
module.exports = function (flag, argv) {
	argv = argv || process.argv;

	var terminatorPos = argv.indexOf('--');
	var prefix = /^--/.test(flag) ? '' : '--';
	var pos = argv.indexOf(prefix + flag);

	return pos !== -1 && (terminatorPos !== -1 ? pos < terminatorPos : true);
};