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node_modules/core-js/modules/web.self.js

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+'use strict';
+var $ = require('../internals/export');
+var global = require('../internals/global');
+var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
+var DESCRIPTORS = require('../internals/descriptors');
+
+var $TypeError = TypeError;
+// eslint-disable-next-line es/no-object-defineproperty -- safe
+var defineProperty = Object.defineProperty;
+var INCORRECT_VALUE = global.self !== global;
+
+// `self` getter
+// https://html.spec.whatwg.org/multipage/window-object.html#dom-self
+try {
+  if (DESCRIPTORS) {
+    // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
+    var descriptor = Object.getOwnPropertyDescriptor(global, 'self');
+    // some engines have `self`, but with incorrect descriptor
+    // https://github.com/denoland/deno/issues/15765
+    if (INCORRECT_VALUE || !descriptor || !descriptor.get || !descriptor.enumerable) {
+      defineBuiltInAccessor(global, 'self', {
+        get: function self() {
+          return global;
+        },
+        set: function self(value) {
+          if (this !== global) throw $TypeError('Illegal invocation');
+          defineProperty(global, 'self', {
+            value: value,
+            writable: true,
+            configurable: true,
+            enumerable: true
+          });
+        },
+        configurable: true,
+        enumerable: true
+      });
+    }
+  } else $({ global: true, simple: true, forced: INCORRECT_VALUE }, {
+    self: global
+  });
+} catch (error) { /* empty */ }