Function assign

test/babel.js:57275–57280

(target, source)

	};

	function assign(target, source) {
		for (var key in source) {
			// Note: `hasOwnProperty` is not needed here.
			target[key] = source[key];
		}
	}

	function update(item, pattern) {
		// TODO: Test if memoizing `pattern` here is worth the effort.