Core-js: Promise polyfill is used in firefox even with useNative set

[RedHatter]

I have to following imports at my entry point but the promise polyfill is still loaded.

import configurator from 'core-js/configurator'
configurator({ useNative: ['Promise'] })
import 'core-js/es/promise'

I understand that firefox doesn't have a full promise implantation, but it's fine for my needs. As I understood it setting useNative should cause the promise polyfill to only be loaded if there's no native implementation regardless of the correctness of that implementation.

[nicolo-ribaudo]

imports are hoisted, so import "core-js/es/promise runs before calling the configurator.

[zloirock]

@nicolo-ribaudo yep here should be require, but README examples use import and seem even with require it's broken in the actual version.

[zloirock]

Nope, I incorrectly tested it, with require it works as expected. So the bug only in the documentation.

[nicolo-ribaudo]

If you need an esm-compatible workaround:

// configure-core-js.js

import configurator from 'core-js/configurator'
configurator({ useNative: ['Promise'] })

// entry point
import "./configure-core-js.js";
import 'core-js/es/promise';

[RedHatter]

imports are hoisted, so import "core-js/es/promise runs before calling the configurator.

Of course. Silly me. Thank you.