OverrideProperties changes undefined as optional

[CarinaChenot]

Considering this:

import { OverrideProperties } from 'type-fest';

type Original = {
  foo: string;
  bar: string;
};

type Modified = {
  foo: string | undefined;
  bar: string;
};

const test: OverrideProperties<Original, Modified> = { bar: '' };

foo is typed as foo?: string instead of foo: string | undefined

This is particularly problematic when using exactOptionalPropertyTypes flag

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[sindresorhus]

Are you on the latest type-fest version?

I added a test for your case and it is passing: 2547a00

[CarinaChenot]

@sindresorhus Indeed, issue went away with 4.10.0 my bad, thank you!