Rule proposal: prefer-global-this

[sindresorhus]

globalThis is the unified way to access the "global" object.

This has the benefit of making code more cross-platform and more consistent.

globalThis requires Node.js 12, so we cannot add it to the recommended preset until April 2021 (date of Node.js 10 obsoletion).

Fail

window.foo; // Browser

self.foo; // Web Worker

global.foo; // Node.js

Pass

globalThis.foo;

[sindresorhus]

This is now accepted.

[fregante]

Can this auto fix to this when it's the same? "globalThis" is so awkward.

Also it should exclude window’s actual properties, like window.innerWidth

[sindresorhus]

Can this auto fix to this when it's the same? "globalThis" is so awkward.

In what situations are they the same?

Also it should exclude window’s actual properties, like window.innerWidth

Yes, good catch. A list can be found here: http://developer.mozilla.org/en-US/docs/Web/API/Window For those, it should enforce window over globalThis.

[fregante]

Changed my mind. globalThis is more clear 👍

[fregante]

Also:

Object.assign(window, {something: true});

Object.defineProperty(window, 'something', {
  value: true,
  writable: true,
});

Object.defineProperties(window, {
  something: {
    value: true,
    writable: true,
  },
});