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Intellisense/tsc: missed errors in union types #200

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mmkal opened this issue Nov 2, 2023 · 0 comments
Open

Intellisense/tsc: missed errors in union types #200

mmkal opened this issue Nov 2, 2023 · 0 comments

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@mmkal
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mmkal commented Nov 2, 2023

The following seems like it passes when using tsc or in an IDE, when it (correctly) fails running tsd via CLI:

import { expectType } from 'tsd'

expectType<number | null>(1)

playground (strict mode enabled)

Given the docs say:

Asserts that the type of expression is identical to type T.

for expectType<T>(expression), this seems confusing. This behaves as expected in expect-type (playground)
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