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30 lines
1.1 KiB
TypeScript
30 lines
1.1 KiB
TypeScript
export type Expect<T extends true> = T
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export type ExpectTrue<T extends true> = T
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export type ExpectFalse<T extends false> = T
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export type IsTrue<T extends true> = T
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export type IsFalse<T extends false> = T
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export type Equal<X, Y> =
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(<T>() => T extends X ? 1 : 2) extends
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(<T>() => T extends Y ? 1 : 2) ? true : false
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export type NotEqual<X, Y> = true extends Equal<X, Y> ? false : true
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// https://stackoverflow.com/questions/49927523/disallow-call-with-any/49928360#49928360
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export type IsAny<T> = 0 extends (1 & T) ? true : false
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export type NotAny<T> = true extends IsAny<T> ? false : true
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export type Debug<T> = { [K in keyof T]: T[K] }
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export type MergeInsertions<T> =
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T extends object
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? { [K in keyof T]: MergeInsertions<T[K]> }
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: T
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export type Alike<X, Y> = Equal<MergeInsertions<X>, MergeInsertions<Y>>
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export type ExpectExtends<VALUE, EXPECTED> = EXPECTED extends VALUE ? true : false
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export type ExpectValidArgs<FUNC extends (...args: any[]) => any, ARGS extends any[]> = ARGS extends Parameters<FUNC>
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? true
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: false
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export type UnionToIntersection<U> = (U extends any ? (k: U) => void : never) extends (k: infer I) => void ? I : never
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