20 lines
2.1 KiB
TypeScript
20 lines
2.1 KiB
TypeScript
declare type Input = Record<string | number | symbol, any>;
|
|
declare type Merger = <T extends Input, K extends keyof T>(obj: T, key: keyof T, value: T[K], namespace: string) => any;
|
|
declare type nullish = null | undefined | void;
|
|
declare type MergeObjects<Destination extends Input, Defaults extends Input> = Destination extends Defaults ? Destination : Omit<Destination, keyof Destination & keyof Defaults> & Omit<Defaults, keyof Destination & keyof Defaults> & {
|
|
-readonly [Key in keyof Destination & keyof Defaults]: Destination[Key] extends nullish ? Defaults[Key] extends nullish ? nullish : Defaults[Key] : Defaults[Key] extends nullish ? Destination[Key] : Merge<Destination[Key], Defaults[Key]>;
|
|
};
|
|
declare type DefuFn = <Source extends Input, Defaults extends Input>(source: Source, ...defaults: Defaults[]) => MergeObjects<Source, Defaults>;
|
|
interface Defu {
|
|
<Source extends Input, Defaults extends Input>(source: Source, ...defaults: Defaults[]): MergeObjects<Source, Defaults>;
|
|
fn: DefuFn;
|
|
arrayFn: DefuFn;
|
|
extend(merger?: Merger): DefuFn;
|
|
}
|
|
declare type MergeArrays<Destination, Source> = Destination extends Array<infer DestinationType> ? Source extends Array<infer SourceType> ? Array<DestinationType | SourceType> : Source | Array<DestinationType> : Source | Destination;
|
|
declare type Merge<Destination extends Input, Defaults extends Input> = Destination extends nullish ? Defaults extends nullish ? nullish : Defaults : Defaults extends nullish ? Destination : Destination extends Array<any> ? Defaults extends Array<any> ? MergeArrays<Destination, Defaults> : Destination | Defaults : Destination extends Function ? Destination | Defaults : Destination extends RegExp ? Destination | Defaults : Destination extends Promise<any> ? Destination | Defaults : Defaults extends Function ? Destination | Defaults : Defaults extends RegExp ? Destination | Defaults : Defaults extends Promise<any> ? Destination | Defaults : Destination extends Input ? Defaults extends Input ? MergeObjects<Destination, Defaults> : Destination | Defaults : Destination | Defaults;
|
|
|
|
declare const defu: Defu;
|
|
|
|
export { defu as default };
|