[рони]

NovichokJS,
где-то надо хранить данные!!!

const createLogger = () => {
    let type = '';
    let message = ''
    let obj = {}

    function warn(messageOfWarn) {
        type = 'warn';
        message = messageOfWarn;
        obj[type] = {type, message}
    }

    function error(messageOfError) {
        type = 'error';
        message = messageOfError;
        obj[type] = {type, message};
    }

    function log(messageOfLog) {
        type = 'log';
        message = messageOfLog;
        obj[type] = {type, message}
    }

    function getRecords(type) {

        return [{ ...obj[type]??{type, message : ''}, dateTime: new Date() }];

    }
    return {
        warn,
        error,
        log,
        getRecords,
    }
};

// examples
const logger1 = createLogger();
logger1.log('User logged in');
logger1.warn('User is tring to ented restricted page');
logger1.error('Unexpected error on the site');

console.log(logger1.getRecords('log')); // ===> [{ message: 'User logged in', type: 'log', dateTime: Date }]
console.log(logger1.getRecords('error')); // ===> [{ message: 'Unexpected error on the site', type: 'error', dateTime: Date }]
console.log(logger1.getRecords('warn')); // ===> [{ message: 'User is tring to ented restricted page', type: 'warn', dateTime: Date }]