Function handler

packages/vite/src/node/build.ts:1376–1383

(id, importer, options)

  const fn = getHookHandler(hook)
  const handler: Plugin[class="st">'resolveId'] = function (id, importer, options) {
    return fn.call(
      injectEnvironmentInContext(this, environment),
      id,
      importer,
      injectSsrFlag(options, environment, pluginName),
    )
  }

  if (class="st">'handler' in hook) {
    return wrapHookObject(hook, handler)