Rocket.Chat.ReactNative/app/reducers/roles.js

import { ROLES } from '../actions/actionsTypes';

const initialState = {};

export default function permissions(state = initialState, action) {
	switch (action.type) {
		case ROLES.SET:
			return action.roles;
		case ROLES.UPDATE:
			return {
				...state,
				[action.payload.id]: action.payload.desc || action.payload.id
			};
		case ROLES.REMOVE: {
			const newState = { ...state };
			delete newState[action.payload.id];
			return newState;
		}
		default:
			return state;
	}
}