/* @flow */ import { warn } from 'core/util/index' export default function on (el: ASTElement, dir: ASTDirective) { if (process.env.NODE_ENV !== 'production' && dir.modifiers) { warn(`v-on without argument does not support modifiers.`) } el.wrapListeners = (code: string) => `_g(${code},${dir.value})` }