TIL globalThis

POSTED ON: May 14, 2021

TAGS: javascript es2020

Via ES2020, globalThis is brand new.

To access the global object:

In the browser, the global object refers to window. You can also use self, or frames
In web workers, you must use self
In NodeJS, you must use global

The this keyword could be used inside functions running in non–strict mode, but this will be undefined in Modules and inside functions running in strict mode. You can also use Function('return this')(), but environments that disable eval(), like CSP in browsers, prevent use of Function in this way.
Via the MDN

globalThis allows us to always refer to the right global object no matter what type of environment you're working on.

REF:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/globalThis

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