fix(h5): setup onError (question/164798)

packages/uni-h5/src/framework/setup/index.ts

@@ -157,7 +157,7 @@ export function setupApp(comp: any) {
       }
       const onLaunch = () => {
         injectAppHooks(instance)
-        const { onLaunch, onShow, onPageNotFound } = instance
+        const { onLaunch, onShow, onPageNotFound, onError } = instance
         const path = route.path.slice(1)
         const launchOptions = initLaunchOptions({
           path: path || __uniRoutes[0].meta.route,
@@ -178,6 +178,11 @@ export function setupApp(comp: any) {
               invokeArrayFns(onPageNotFound, pageNotFoundOptions)
           }
         }
+        if (onError) {
+          instance.appContext.config.errorHandler = (err) => {
+            invokeArrayFns(onError, err)
+          }
+        }
       }
       if (__UNI_FEATURE_PAGES__) {
         // 等待ready后，再onLaunch，否则直达非首页无法获取到正确的path和query