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- 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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