Modlog Polyfill

// add this as a "freestanding" function somewhere in chat.js
function escapeRegex(str) {
    return (str && typeof str === 'string' ? str : '').replace(/[\\.+*?!=()|[\]{}^$#<>]/g, '\\$&');
}

// polyfill the following things into CommandContext in chat.js to avoid refactoring
// to avoid build errors delete the deprecated functions within the class
    /**
     * @param {string} message
     * @param {string} log
     */
    addModCommand(message, log) {
        if (!log) {
            // only a single message provided - format it with userids by grammatically split-parsing the message
            const {roomMsg, logMsg} = this.splitModCommand(message);
            this.room.addByUser(this.user, roomMsg);
            this.room.modlog(`(${this.room.id}) ${logMsg}`);
        } else {
            this.room.addByUser(this.user, message);
            this.room.modlog(`(${this.room.id}) ${log}`);
        }
    }
    /**
     * @param {string} data
     */
    logModCommand(data) {
        this.room.modlog(`(${this.room.id}) ${logMsg}`);
    }
    /**
     * @param {string} roomMsg
     */
    splitModCommand(roomMsg) {
        const subjectRegex = new RegExp(`^(\\(?)(${this.targetUsername ? escapeRegex(this.targetUsername) + '|' : ''}${this.targetUser ? escapeRegex(this.targetUser.getLastName()) + '|' : ''}${escapeRegex(this.user.name)})\\b`, 'gi');
        const objectRegex = new RegExp(`(by|to|for) (${this.targetUsername ? escapeRegex(this.targetUsername) + '|' : ''}${escapeRegex(this.user.name)})\\b`, 'gi');
        const possessiveRegex = new RegExp(`(${this.targetUsername ? escapeRegex(this.targetUsername) + '|' : ''}${escapeRegex(this.user.name)})'s`, 'gi');

        let logMsg = roomMsg.replace(subjectRegex, m => {
            let prefix = m.startsWith('(') ? '(' : '';
            return prefix + `[${toId(m)}]`;
        }).replace(objectRegex, m => {
            const [preposition, ...username] = m.split(' ');
            return `${preposition} [${toId(username.join(''))}]`;
        }).replace(possessiveRegex, match => `[${match.slice(0, -2)}]'s`);

        return {roomMsg, logMsg};
    }
    /**
     * @param {string} message
     * @param {string} log
     */
    privateModCommand(message, log) {
        if (!log) {
            // only a single message provided - format it with userids by grammatically split-parsing the message
            const {roomMsg, logMsg} = this.splitModCommand(message);
            this.room.sendModCommand(roomMsg);
            this.roomlog(roomMsg);
            this.room.modlog(`(${this.room.id}) ${logMsg}`);
        } else {
            this.room.sendModCommand(message);
            this.roomlog(message);
            this.room.modlog(`(${this.room.id}) ${log}`);
        }
    }
    /**
     * @param {string} data
     */
    logEntry(data) {
        if (this.pmTarget) return;
        this.room.roomlog(data);
    }