| var fails = require('../internals/fails'); |
| |
| var replacement = /#|\.prototype\./; |
| |
| var isForced = function (feature, detection) { |
| var value = data[normalize(feature)]; |
| return value == POLYFILL ? true |
| : value == NATIVE ? false |
| : typeof detection == 'function' ? fails(detection) |
| : !!detection; |
| }; |
| |
| var normalize = isForced.normalize = function (string) { |
| return String(string).replace(replacement, '.').toLowerCase(); |
| }; |
| |
| var data = isForced.data = {}; |
| var NATIVE = isForced.NATIVE = 'N'; |
| var POLYFILL = isForced.POLYFILL = 'P'; |
| |
| module.exports = isForced; |