gerard2p/koaton-cli

export default class CommandLog {
    constructor (target, property, update = () => {}) {
        Object.defineProperty(this, 'onupdate', {
            enumerable: false,
            value: update
        });
        Object.defineProperty(this, 'target', {
            enumerable: false,
            get () {
                return target[property];
            }
        });
    }
    add (cmd) {
        if (this.target.indexOf(cmd) === -1) {
            this.target.push(cmd);
            this.onupdate();
        }
    }
}