Function waitFor

frontend/src/core/state/jotai.ts:16–33

(
  atom: Atom<T>,
  predicate: (value: T) => boolean,
)

 * Wait for an atom to satisfy a predicate.
 */
export async function waitFor<T>(
  atom: Atom<T>,
  predicate: (value: T) => boolean,
) {
  if (predicate(store.get(atom))) {
    return store.get(atom);
  }

  return new Promise<T>((resolve) => {
    const unsubscribe = store.sub(atom, () => {
      const value = store.get(atom);
      if (predicate(value)) {
        unsubscribe();
        resolve(value);
      }
    });
  });
}

/**
 * Create a Jotai effect that runs when an atom changes.