typedux
Version:
Slightly adjusted Redux (awesome by default) for TS
33 lines • 1.03 kB
JavaScript
/**
* Optional chaining with default values. To inspect a property value in
* a tree-like structure, invoke it as a function, optionally passing a default value.
*
* @example
* // Given:
* const x = oc<T>({
* a: 'hello',
* b: { d: 'world' },
* c: [-100, 200, -300],
* });
*
* // Then:
* x.a() === 'hello'
* x.b.d() === 'world'
* x.c[0]() === -100
* x.c[100]() === undefined
* x.c[100](1234) === 1234
* x.c.map((e) => e()) === [-100, 200, -300]
* x.d.e() === undefined
* x.d.e('optional default value') === 'optional default value'
* (x as any).y.z.a.b.c.d.e.f.g.h.i.j.k() === undefined
*/
//export declare function oc<T>(data?: T): SelectorChainType<T>;
export function selector(data) {
return new Proxy(((defaultValue) => (data == null ? defaultValue : data)), {
get: (target, key) => {
const obj = target();
return selector(typeof obj === "object" ? obj[key] : undefined);
}
});
}
//# sourceMappingURL=SelectorBuilder.js.map