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							- 'use strict';
 
- var fails = require('../internals/fails');
 
- var isCallable = require('../internals/is-callable');
 
- var replacement = /#|\.prototype\./;
 
- var isForced = function (feature, detection) {
 
-   var value = data[normalize(feature)];
 
-   return value === POLYFILL ? true
 
-     : value === NATIVE ? false
 
-     : isCallable(detection) ? 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;
 
 
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