web.self.js•1.52 kB
'use strict';
var $ = require('../internals/export');
var globalThis = require('../internals/global-this');
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 = globalThis.self !== globalThis;
// `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(globalThis, '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(globalThis, 'self', {
get: function self() {
return globalThis;
},
set: function self(value) {
if (this !== globalThis) throw new $TypeError('Illegal invocation');
defineProperty(globalThis, 'self', {
value: value,
writable: true,
configurable: true,
enumerable: true
});
},
configurable: true,
enumerable: true
});
}
} else $({ global: true, simple: true, forced: INCORRECT_VALUE }, {
self: globalThis
});
} catch (error) { /* empty */ }