Documenting the code

export default class View {
	...  
    /**
     * Render the received object to the DOM
     * @param {Object | Object[]} data The data to be rendered (e.g. recipe)
     * @param {boolean} [render=true] If false, create markup string instead of render to the DOM
     * @returns {undefined | string} A markup string is returned if render=false
     * @this {Object} View instance
     * @author Damian Demasi
     * @todo Finish implementation
     */
    render(data, render = true) {
        if (!data || (Array.isArray(data) && data.length === 0)) return this.renderError();

        this._data = data;
        const markup = this._generateMarkup();

        if (!render) return markup;

        this._clear();
        this._parentElement.insertAdjacentHTML('afterbegin', markup);
    }
	...
}