Typescript definitions for core-js@3

Question

I need to use some core-js@3 polyfills from within TypeScript. However, @types/core-js provides definitions for [email protected] only, and it seems that core-js@3 is sufficiently different from 2 that most type definitions are outdated. Is there some accepted workaround to this?

Exact same issue here. Things like structuredClone are not yet defined in @types, causing problems for TS. Did you ever resolve this issue? — FullStackFool
– FullStackFool, Commented Feb 18, 2022 at 13:45

FullStackFool · Accepted Answer · 2022-02-18 14:15:23Z

2

A shim can help here. For instance, if you need typings for structuredClone:

// shims/core-js.d.ts

declare module 'core-js/actual/structured-clone' {
    export default function structuredClone<T>(value: T): T;
}

Note: This omits the transfer property as it's not something I personally intend to use.

answered Feb 18, 2022 at 14:15

FullStackFool

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1 Comment

tryforceful Over a year ago

Instead of providing a local shim, why don't people update the @types/core-js itself? 🤔...

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