Vue - Official extension or vue-tsc version
3.3.3
VSCode version
1.122.0
Vue version
3.5.35
TypeScript version
6.0.3
System Info
System:
OS: Windows 10 10.0.19045
CPU: (12) x64 Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
Memory: 3.00 GB / 15.85 GB
Binaries:
Node: 26.2.0 - C:\Program Files\nodejs\node.EXE
npm: 11.13.0 - C:\Program Files\nodejs\npm.CMD
pnpm: 11.1.3 - C:\Users\grant\AppData\Roaming\npm\pnpm.CMD
Browsers:
Chrome: 148.0.7778.179
Edge: Chromium (140.0.3485.66)
Firefox: 150.0.1 - C:\Program Files\Mozilla Firefox\firefox.exe
Internet Explorer: 11.0.19041.5794package.json dependencies
{
"devDependencies": {
"typescript": "^6.0.3",
"vue": "^3.5.35",
"vue-tsc": "^3.3.3"
}
}Steps to reproduce
- Clone the minimal reproduction linked below.
- Run
npm i.
- Run
npm run check, or open App.vue in VS Code with the Vue extension installed.
What is expected?
There should not be any type errors.
What is actually happening?
> vue-tsc -b --noEmit
App.vue:6:11 - error TS2353: Object literal may only specify known properties, and 'optional' does not exist in type '{ readonly style?: unknown; readonly key?: PropertyKey | undefined; readonly ref?: VNodeRef | undefined; readonly class?: unknown; readonly ref_for?: boolean | undefined; ... 6 more ...; readonly onVnodeUnmounted?: VNodeMountHook | ... 1 more ... | undefined; } & VNodeProps & AllowedComponentProps & ComponentCustomP...'.
6 <Parent optional="override" />
~~~~~~~~
App.vue:7:11 - error TS2353: Object literal may only specify known properties, and 'required' does not exist in type '{ readonly style?: unknown; readonly key?: PropertyKey | undefined; readonly ref?: VNodeRef | undefined; readonly class?: unknown; readonly ref_for?: boolean | undefined; ... 6 more ...; readonly onVnodeUnmounted?: VNodeMountHook | ... 1 more ... | undefined; } & VNodeProps & AllowedComponentProps & ComponentCustomP...'.
7 <Parent required="override" />
~~~~~~~~
Found 2 errors.
Link to minimal reproduction
https://github.com/GrantGryczan/vue-language-tools-issue
Any additional comments?
I suspect this regression is related to the addition of the checkRequiredFallthroughAttributes Vue compiler option, but that's just a guess. That option doesn't need to be enabled for the bug to occur. This wasn't an issue a few months ago.
Vue - Official extension or vue-tsc version
3.3.3
VSCode version
1.122.0
Vue version
3.5.35
TypeScript version
6.0.3
System Info
System: OS: Windows 10 10.0.19045 CPU: (12) x64 Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz Memory: 3.00 GB / 15.85 GB Binaries: Node: 26.2.0 - C:\Program Files\nodejs\node.EXE npm: 11.13.0 - C:\Program Files\nodejs\npm.CMD pnpm: 11.1.3 - C:\Users\grant\AppData\Roaming\npm\pnpm.CMD Browsers: Chrome: 148.0.7778.179 Edge: Chromium (140.0.3485.66) Firefox: 150.0.1 - C:\Program Files\Mozilla Firefox\firefox.exe Internet Explorer: 11.0.19041.5794package.json dependencies
{ "devDependencies": { "typescript": "^6.0.3", "vue": "^3.5.35", "vue-tsc": "^3.3.3" } }Steps to reproduce
npm i.npm run check, or openApp.vuein VS Code with the Vue extension installed.What is expected?
There should not be any type errors.
What is actually happening?
Link to minimal reproduction
https://github.com/GrantGryczan/vue-language-tools-issue
Any additional comments?
I suspect this regression is related to the addition of the
checkRequiredFallthroughAttributesVue compiler option, but that's just a guess. That option doesn't need to be enabled for the bug to occur. This wasn't an issue a few months ago.