Object.hasOwn is not a function on safari v14.1

[MisterFISHUP]

React version: 18.2.0

Next.js version: 13.0.1

TypeScript version: 4.8.4

Rest Hooks version: rest-hooks 6.4.2 and @rest-hooks/rest 5.2.0

Package manager version: yarn 1.22.19

Node version: 16.16.0

Describe the bug

Hi,

On some old safari (14.1.2), I encounter this runtime error: Object.hasOwn is not a function (from NetworkManager.js), which I think comes from this commit bdbc6a4. I'm also not sure why this problem exists since it's supposed to be handled by some transcompiler.

I know Object.hasOwn is too new for safari v14.1, but I'm looking for a solution without upgrading the browser.

My tsconfig has esnext in compilerOptions.lib and I've tried using babel-plugin-transform-object-hasown but it didn't solve the problem.

I've also tried to downgrade rest hooks to some versions earlier than the commit above (bdbc6a4), e.g. rest-hooks 6.3.11 and @rest-hooks/rest 5.1.1 (or even older versions), but it seems that @rest-hooks/core 3.4.0 is always installed (in node_modules) and thus the problem still persists. (How can I install rest hooks without having the Object.hasOwn syntax inside? Maybe it could be one of the easiest solutions.)

To Reproduce

The problem is from a private repo so I can't share it here. I'm using next.js v13 with ts v4.8. I think as long as Object.hasOwn is somewhere in the installed dependencies the error will be thrown.

Expected behavior

No this Object.hasOwn error on Safari v14.1.

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P.S. Thanks for this awesome project!

[ntucker]

Thanks for the report @MisterFISHUP !

I'm looking into updating the transpiling process to include imports to the core-js polyfill in the "exports" output.

In the meantime, you can handle this by adding import "core-js"; to the entrypoint of your application. This should include the needed polyfills automatically. If your babel config uses preset-env, this should also ensure only needed polyfills are included.

[ntucker]

Should be fixed in rest-hooks@6.6.2 or 7 @MisterFISHUP