11 lines
270 B
TypeScript
11 lines
270 B
TypeScript
/**
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* Gives an error if the type is not equal to 1.
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*
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* @example
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* ```ts
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* type _ExpectEquals = Assert<Equals<'a' | 'b', 'a'>> // Gives an error
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* type _ExpectEquals = Assert<Equals<'a' | 'b', 'b' | 'a'>> // No error
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* ```
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*/
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export type Assert<T extends 1> = T
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