ngrx-forms/esm2015/src/group/reducer/util.js

Proper integration of forms in Angular 4 applications using ngrx

import { formStateReducer } from '../../reducer';
import { computeGroupState } from '../../state';
export function dispatchActionPerChild(controls, actionCreator) {
    let hasChanged = false;
    const newControls = Object.keys(controls)
        .reduce((c, key) => {
        Object.assign(c, { [key]: formStateReducer(controls[key], actionCreator(controls[key].id)) });
        hasChanged = hasChanged || c[key] !== controls[key];
        return c;
    }, {});
    return hasChanged ? newControls : controls;
}
function callChildReducers(controls, action) {
    let hasChanged = false;
    const newControls = Object.keys(controls)
        .map(key => [key, formStateReducer(controls[key], action)])
        .reduce((res, [key, state]) => {
        hasChanged = hasChanged || state !== controls[key];
        return Object.assign(res, { [key]: state });
    }, {});
    return hasChanged ? newControls : controls;
}
export function childReducer(state, action) {
    const controls = callChildReducers(state.controls, action);
    if (state.controls === controls) {
        return state;
    }
    return computeGroupState(state.id, controls, state.value, state.errors, state.pendingValidations, state.userDefinedProperties, {
        wasOrShouldBeDirty: state.isDirty,
        wasOrShouldBeEnabled: state.isEnabled,
        wasOrShouldBeTouched: state.isTouched,
        wasOrShouldBeSubmitted: state.isSubmitted,
    });
}
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4gICAgICB3YXNPclNob3VsZEJlRW5hYmxlZDogc3RhdGUuaXNFbmFibGVkLFxyXG4gICAgICB3YXNPclNob3VsZEJlVG91Y2hlZDogc3RhdGUuaXNUb3VjaGVkLFxyXG4gICAgICB3YXNPclNob3VsZEJlU3VibWl0dGVkOiBzdGF0ZS5pc1N1Ym1pdHRlZCxcclxuICAgIH0sXHJcbiAgKTtcclxufVxyXG4iXX0=