Function isWaveObjectNullAtom

frontend/app/store/wos.ts:240–249

(oref: string)

}

function isWaveObjectNullAtom(oref: string): Atom<boolean> {
    const cacheKey = oref + ":isnull";
    let cachedAtom = waveObjectDerivedAtomCache.get(cacheKey) as Atom<boolean>;
    if (cachedAtom != null) {
        return cachedAtom;
    }
    cachedAtom = atom((get) => get(getWaveObjectAtom(oref)) == null);
    waveObjectDerivedAtomCache.set(cacheKey, cachedAtom);
    return cachedAtom;
}

function useWaveObjectValue<T extends WaveObj>(oref: string): [T, boolean] {
    const wov = getWaveObjectValue<T>(oref);