map-transform/dist/operations/transform.js

Map and transform objects with mapping definitions

import { getStateValue, setStateValue, revFromState, } from '../utils/stateHelpers.js';
export default function transform(fn, revFn) {
    return (options) => {
        if (typeof fn !== 'function') {
            throw new Error('Transform operation was called without a valid transformer function');
        }
        const fwdPipeline = fn(options);
        const revPipeline = typeof revFn === 'function' ? revFn(options) : fwdPipeline;
        return (next) => async (state) => {
            const nextState = await next(state);
            const fn = revFromState(nextState) ? revPipeline : fwdPipeline;
            const value = await fn(getStateValue(nextState), nextState);
            return setStateValue(nextState, value);
        };
    };
}
//# sourceMappingURL=transform.js.map