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@reduxjs/toolkit/dist/uncheckedindexed.ts

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1// inlined from https://github.com/EskiMojo14/uncheckedindexed
2// relies on remaining as a TS file, not .d.ts
3type IfMaybeUndefined<T, True, False> = [undefined] extends [T] ? True : False
4
5const testAccess = ({} as Record<string, 0>)['a']
6
7export type IfUncheckedIndexedAccess<True, False> = IfMaybeUndefined<
8  typeof testAccess,
9  True,
10  False
11>
12
13export type UncheckedIndexedAccess<T> = IfUncheckedIndexedAccess<
14  T | undefined,
15  T
16>

1	`// inlined from https://github.com/EskiMojo14/uncheckedindexed`
2	`// relies on remaining as a TS file, not .d.ts`
3	`type IfMaybeUndefined<T, True, False> = [undefined] extends [T] ? True : False`
4
5	`const testAccess = ({} as Record<string, 0>)['a']`
6
7	`export type IfUncheckedIndexedAccess<True, False> = IfMaybeUndefined<`
8	`typeof testAccess,`
9	`True,`
10	`False`
11	`>`
12
13	`export type UncheckedIndexedAccess<T> = IfUncheckedIndexedAccess<`
14	`T \| undefined,`
15	`T`
16	`>`