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Ionic Framework Lifecycle should wrap with vue ErrorHandler #30374

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@trydofor

lifecycle should handle error

I diff the lifecycle hooks code between ionic and vue,
it is better to wrap hooks with callWithAsyncErrorHandling as vue do.

no error handle

vue onMounted will hook onErrorCaptured, but onIonViewWillEnter not

- onIonViewWillEnter(async () => {
onMounted(async () => {
  await init();
});
common-class.ts:60 Uncaught (in promise) ApiResultError: Order has expired
    at UseApiRouteFetcher.ts:107:15
    at callHooks (ofetch.03887fc3.mjs:131:15)
    at async $fetchRaw2 (ofetch.03887fc3.mjs:299:7)
    at async $fetch2 (ofetch.03887fc3.mjs:316:15)
    at async fetchTypedResult (typed-fetcher.ts:78:21)
    at async ionicFetchResult (ionic-fetcher.ts:45:12)
    at async init (prepay.vue?t=1745726446418:133:32)
    at async prepay.vue?t=1745726446418:143:7

ionic lifecycle.ts

const wrappedHook = (...args: unknown[]) => {
if (target.isUnmounted) {
return;
}
return args ? hook(...args) : hook();

vue apiLifecycle.ts

https://github.com/vuejs/core/blob/6eb29d345aa73746207f80c89ee8b37ff7b949c9/packages/runtime-core/src/apiLifecycle.ts#L31-L45

const res = callWithAsyncErrorHandling(hook, target, type, args)
// ....
return res

Activity

  1. thetaPC commented on Oct 14, 2026

    @thetaPC
    Contributor

    Thanks for the report, and sorry for the delay.

    Verified on 9.0.8. Ionic calls onIonViewWillEnter and the other Ionic page hooks directly instead of through Vue's error handling, so an error thrown in them never reaches app.config.errorHandler or onErrorCaptured. An async hook's rejection ends up as an unhandled promise rejection. A synchronous throw also stops the page transition, which leaves the new page invisible. The options API ionViewWillEnter and the other options API Ionic hooks have the same problem.

    Switching to onMounted gets the error handled, but onMounted only runs the first time the page is displayed. Ionic keeps pages in the DOM, so returning to the page later will not run init() again.

    Tracked as a bug in @ionic/vue.

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