Cancel epic

cancel-epic.js

const editEpic = (action$, store) => action$
    .ofType(t.EDIT_UPDATE)
    .debounceTime(100)
    .mergeMap((action) => {
        const { path } = action.meta;

        return validate$()
            .delay(3000)
            .map(() => modelActions.modelSetPendingValidation({ value: false, path: path }))
            .takeUntil(
                action$.ofType(t.EDIT_UPDATE, modelActionTypes.MODEL_REMOVE_VALUE)
                    .filter(newAction => path === newAction.meta.path)
            )
            .startWith(modelActions.modelSetPendingValidation({ value: true, path: path }));
    });