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node_modules/core-js/internals/is-forced.js

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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;