26 lines
855 B
TypeScript
26 lines
855 B
TypeScript
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export type Optional<T, K extends keyof T> = Omit<T, K> & Partial<T>;
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export type ExtractKeys<T, K extends keyof T, U> = T[K] extends U ? K : never;
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export type ValueOf<T> = T[keyof T];
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export type UnionToIntersection<T> = (T extends any ? (x: T) => void : never) extends (x: infer U) => void ? U : never;
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export type Awaited<T> = T extends PromiseLike<infer U> ? Awaited<U> : T;
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// `T extends any` is a trick to apply a operator to each member of a union
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export type KeyOfEach<T> = T extends any ? keyof T : never;
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// Taken from https://effectivetypescript.com/2020/04/09/jsonify/
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export type Jsonify<T> = T extends Date
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? string
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: T extends object
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? {
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[k in keyof T]: Jsonify<T[k]>;
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}
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: T;
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export type AtLeast<T, K extends keyof T> = Partial<T> & Pick<T, K>;
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export type RequiredField<T, K extends keyof T> = T & Required<Pick<T, K>>;
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