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node_modules/core-js/modules/es.unescape.js

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+'use strict';
+var $ = require('../internals/export');
+var uncurryThis = require('../internals/function-uncurry-this');
+var toString = require('../internals/to-string');
+
+var fromCharCode = String.fromCharCode;
+var charAt = uncurryThis(''.charAt);
+var exec = uncurryThis(/./.exec);
+var stringSlice = uncurryThis(''.slice);
+
+var hex2 = /^[\da-f]{2}$/i;
+var hex4 = /^[\da-f]{4}$/i;
+
+// `unescape` method
+// https://tc39.es/ecma262/#sec-unescape-string
+$({ global: true }, {
+  unescape: function unescape(string) {
+    var str = toString(string);
+    var result = '';
+    var length = str.length;
+    var index = 0;
+    var chr, part;
+    while (index < length) {
+      chr = charAt(str, index++);
+      if (chr === '%') {
+        if (charAt(str, index) === 'u') {
+          part = stringSlice(str, index + 1, index + 5);
+          if (exec(hex4, part)) {
+            result += fromCharCode(parseInt(part, 16));
+            index += 5;
+            continue;
+          }
+        } else {
+          part = stringSlice(str, index, index + 2);
+          if (exec(hex2, part)) {
+            result += fromCharCode(parseInt(part, 16));
+            index += 2;
+            continue;
+          }
+        }
+      }
+      result += chr;
+    } return result;
+  }
+});