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20 lines
624 B
TypeScript
20 lines
624 B
TypeScript
import {expectError, expectType} from 'tsd';
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import type {IsUnknown} from '../index';
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declare const _unknown: unknown;
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declare const something = 'something';
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// `IsUnknown` should only be true for `any`
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expectType<IsUnknown<unknown>>(true);
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expectType<IsUnknown<typeof _unknown>>(true);
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expectType<IsUnknown<string>>(false);
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expectType<IsUnknown<typeof something>>(false);
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expectType<IsUnknown<any>>(false);
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expectType<IsUnknown<never>>(false);
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expectType<IsUnknown<null>>(false);
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expectType<IsUnknown<undefined>>(false);
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expectType<IsUnknown<void>>(false);
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// Missing generic parameter
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expectError<IsUnknown>(_unknown);
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