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16 lines
531 B
TypeScript
16 lines
531 B
TypeScript
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export type Data = { [key: string]: unknown }
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export type UnionToIntersection<U> = (
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U extends any ? (k: U) => void : never
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) extends (k: infer I) => void
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? I
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: never
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// Conditional returns can enforce identical types.
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// See here: https://github.com/Microsoft/TypeScript/issues/27024#issuecomment-421529650
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// prettier-ignore
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type Equal<Left, Right> =
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(<U>() => U extends Left ? 1 : 0) extends (<U>() => U extends Right ? 1 : 0) ? true : false;
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export type HasDefined<T> = Equal<T, unknown> extends true ? false : true
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