updux/src/selectors.ts

import { D } from '@mobily/ts-belt';

export function buildSelectors(localSelectors = {}, subduxes = {}) {
    const subSelectors = (Object.entries(subduxes) as any).map(
        ([slice, { selectors }]) =>
            D.map(selectors, (subSelect) => (state) => subSelect(state[slice])),
    );

    return [localSelectors, ...subSelectors].reduce(D.merge);
}