51 lines
1.4 KiB
Plaintext
51 lines
1.4 KiB
Plaintext
export type Id<T> = { [K in keyof T]: T[K] } & {}
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export type WithRequiredProp<T, K extends keyof T> = Omit<T, K> &
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Required<Pick<T, K>>
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export type Override<T1, T2> = T2 extends any ? Omit<T1, keyof T2> & T2 : never
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export function assertCast<T>(v: any): asserts v is T {}
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export function safeAssign<T extends object>(
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target: T,
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...args: Array<Partial<NoInfer<T>>>
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): T {
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return Object.assign(target, ...args)
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}
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/**
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* Convert a Union type `(A|B)` to an intersection type `(A&B)`
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*/
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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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export type NonOptionalKeys<T> = {
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[K in keyof T]-?: undefined extends T[K] ? never : K
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}[keyof T]
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export type HasRequiredProps<T, True, False> =
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NonOptionalKeys<T> extends never ? False : True
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export type OptionalIfAllPropsOptional<T> = HasRequiredProps<T, T, T | never>
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export type NoInfer<T> = [T][T extends any ? 0 : never]
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export type NonUndefined<T> = T extends undefined ? never : T
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export type UnwrapPromise<T> = T extends PromiseLike<infer V> ? V : T
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export type MaybePromise<T> = T | PromiseLike<T>
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export type OmitFromUnion<T, K extends keyof T> = T extends any
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? Omit<T, K>
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: never
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export type IsAny<T, True, False = never> = true | false extends (
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T extends never ? true : false
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)
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? True
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: False
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export type CastAny<T, CastTo> = IsAny<T, CastTo, T>
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