trezor-wallet/src/js/reducers/LogReducer.js

/* @flow */
'use strict';

import * as LOG from '../actions/constants/log';
import type { Action } from '~/flowtype';

export type LogEntry = {
    time: number;
    type: string;
    // message: string;
    message: any;
}

export type State = {
    opened: boolean;
    entries: Array<LogEntry>;
}

export const initialState: State = {
    opened: false,
    entries: [],
};


export default (state: State = initialState, action: Action): State => {

    switch (action.type) {

        case LOG.OPEN : 
            return {
                ...state,
                opened: true
            }

        case LOG.CLOSE : 
            return {
                ...state,
                opened: false
            }

        case LOG.ADD : 
            return {
                ...state,
                entries: state.entries.concat([ action.payload ])
            }

        default:
            return state;
    }

}