wp-generators-with-es6-10.js

export class Grid {
    constructor(...drivers) {
        this._drivers = drivers || [];
    }

    addDriver(driver) {
        this._drivers.push(driver);
    }

    *[Symbol.iterator]() {
        for (let i = 0, length = this._drivers.length; i < length; ++i) {
            yield this._drivers[i];
        }
    }
}