Function convertLegacyEventKey

packages/runtime-core/src/compat/renderFn.ts:229–241

(event: string)

}

function convertLegacyEventKey(event: string): string {
  // normalize v2 event prefixes
  if (event[0] === '&') {
    event = event.slice(1) + 'Passive'
  }
  if (event[0] === '~') {
    event = event.slice(1) + 'Once'
  }
  if (event[0] === '!') {
    event = event.slice(1) + 'Capture'
  }
  return toHandlerKey(event)
}

function convertLegacyDirectives(
  vnode: VNode,