ungap / weakrefs

WeakRef and FinalizationGroup "polyfill"

weakrefs

The WeakRef and FinalizationGroup polyfill/sham *

• CDN global patch via https://unpkg.com/@ungap/weakrefs
• ESM via import {WeakRef, FinalizationGroup} from '@ungap/weakrefs'
• CJS via const {WeakRef, FinalizationGroup} = require('@ungap/weakrefs')

* The implementation uses WeakMap and it does not actually trigger the FinalizationGroup callback, unless explicitly asked via fg.cleanupSome(fn).

⚠ Webpack Users

If you have issues just requiring @ungap/weakrefs, be sure you require @ungap/weakrefs/cjs instead.

No issue should happen if you just import the module instead.