1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | 1× 1× 2× 2× | export default class VisComponent { constructor (el) { if (I!el) { throw new Error('"el" is a required argument'); } this.el = el; } render () { throw new Error('"render() is pure abstract"'); } get serializationFormats () { return []; } } |