46 lines
1.4 KiB
TypeScript
46 lines
1.4 KiB
TypeScript
/* eslint-disable @typescript-eslint/array-type */
|
|
|
|
export type FunctionPropertyNames<T> = {
|
|
[K in keyof T]: T[K] extends Function ? K : never
|
|
}[keyof T]
|
|
|
|
export type FunctionProperties<T> = Pick<T, FunctionPropertyNames<T>>
|
|
|
|
export type AttributesOnly<T> = {
|
|
[K in keyof T]: T[K] extends Function ? never : T[K]
|
|
}
|
|
|
|
export type PickWith<T, KT extends keyof T, V> = {
|
|
[P in KT]: T[P] extends V ? V : never
|
|
}
|
|
|
|
export type PickWithOpt<T, KT extends keyof T, V> = {
|
|
[P in KT]?: T[P] extends V ? V : never
|
|
}
|
|
|
|
// https://github.com/krzkaczor/ts-essentials Rocks!
|
|
export type DeepPartial<T> = {
|
|
[P in keyof T]?: T[P] extends Array<infer U>
|
|
? Array<DeepPartial<U>>
|
|
: T[P] extends ReadonlyArray<infer U>
|
|
? ReadonlyArray<DeepPartial<U>>
|
|
: DeepPartial<T[P]>
|
|
}
|
|
|
|
type Primitive = string | Function | number | boolean | symbol | undefined | null
|
|
export type DeepOmitHelper<T, K extends keyof T> = {
|
|
[P in K]: // extra level of indirection needed to trigger homomorhic behavior
|
|
T[P] extends infer TP // distribute over unions
|
|
? TP extends Primitive
|
|
? TP // leave primitives and functions alone
|
|
: TP extends any[]
|
|
? DeepOmitArray<TP, K> // Array special handling
|
|
: DeepOmit<TP, K>
|
|
: never
|
|
}
|
|
export type DeepOmit<T, K> = T extends Primitive ? T : DeepOmitHelper<T, Exclude<keyof T, K>>
|
|
|
|
export type DeepOmitArray<T extends any[], K> = {
|
|
[P in keyof T]: DeepOmit<T[P], K>
|
|
}
|