MergeDeep is never when compiled to .d.ts

[dreinon]

I'm trying to use MergeDeep to redefine certain types from the type generation Supabase CLI does, like it says in the guide.

When I write the code, it works well, but when it is compiled to d.ts, it is never:

Any ideas? Thanks!

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[dreinon]

@sindresorhus hi, sorry to tag but it's a bit important for my project. Any ideas of what could be causing this issue? Thanks!

[sindresorhus]

First, make sure you are on the latest type-fest version and you're using strict TS config.

We cannot really do much based on a screenshot. If you want to see this fixed sooner, I recommend submitting a minimal failing test: https://github.com/sindresorhus/type-fest/blob/main/test-d/merge-deep.ts

[dreinon]

First, make sure you are on the latest type-fest version and you're using strict TS config.

We cannot really do much based on a screenshot. If you want to see this fixed sooner, I recommend submitting a minimal failing test: https://github.com/sindresorhus/type-fest/blob/main/test-d/merge-deep.ts

Thanks

[dreinon]

using strict TS config solves the problem, may I know why? Thanks!

[sindresorhus]

I haven't look into it, but certain types are more limited when strict mode is off.