mobx-bonsai
Version:
A fast lightweight alternative to MobX-State-Tree + Y.js two-way binding
16 lines (15 loc) • 718 B
TypeScript
type ExtractArrayValue<T> = T extends Array<infer V> ? V : never;
/**
* Transforms an array (with values of type V) into a Set<V> (getter).
*
* @template T - Type of the containing object
* @template K - Type of the property key in T that will be transformed
*
* @param this - The object containing the property to transform
* @param propName - The name of the property to transform into a Set
* @returns A function that returns a Set backed by the values from the array property
*/
export declare function arrayToSetTransform<T extends {
[k in K]?: Array<any> | null | undefined;
}, K extends keyof T>(propName: K): (this: T) => Set<ExtractArrayValue<T[K]>> | Extract<T[K], undefined | null>;
export {};