@mic-rexjs/usecases/es/methods/generateEntity/index.js

Usecases of Clean Architecture

import { EntityStore } from '../../classes/EntityStore';
import { isGenerator } from '../isGenerator';
export const generateEntity = ((generator, options = {}) => {
    const results = [];
    const isAsync = isGenerator(generator, Symbol.asyncIterator);
    const { store = new EntityStore(void 0), onYield = (entity) => {
        return entity;
    }, onReturn = (result) => {
        return result;
    }, onGenerate = (entity, result) => {
        return [entity, result];
    }, } = options;
    const generate = async () => {
        for (;;) {
            const ret = generator.next(store.value);
            const syncRet = ret;
            const asyncRet = ret;
            const { value, done } = isAsync ? await asyncRet : syncRet;
            const { value: currentEntity } = store;
            if (done) {
                const result = onReturn(value, currentEntity);
                results[0] = result;
                return [currentEntity, result];
            }
            const newEntity = onYield(typeof value === 'function' ? value(currentEntity) : value, currentEntity);
            store.setValue(newEntity);
        }
    };
    const promise = generate();
    if (results.length > 0) {
        return onGenerate(store.value, results[0]);
    }
    return promise.then(([entity, result]) => {
        return onGenerate(entity, result);
    });
});