19.1 Value Properties of the Global Object

19.1.1 globalThis

The initial value of the "globalThis" property of the global object in a Realm Record realm is realm.[[GlobalEnv]].[[GlobalThisValue]].

This property has the attributes { [[Writable]]: true, [[Enumerable]]: false, [[Configurable]]: true }.

19.1.2 Infinity

The value of Infinity is +∞𝔽 (see 6.1.6.1). This property has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: false }.

19.1.3 NaN

The value of NaN is NaN (see 6.1.6.1). This property has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: false }.

19.1.4 undefined

The value of undefined is undefined (see 6.1.1). This property has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: false }.