When using verbose syntax of v-model, if the argument is generic, parent will show it as any, reporting error #8623
Description
Vue version
3.3.4
Link to minimal reproduction
https://github.com/rodrigocfd/vue-bug-generic
Steps to reproduce
When using the verbose syntax of component v-model, when the argument is a generic parameter, the parent component won't type the argument, which will appear as any. Reproducible example below.
- Child component:
<script setup lang="ts" generic="T">
const props = defineProps<{
modelValue: T;
}>();
const emit = defineEmits<{
'update:modelValue': [value: T];
}>();
</script>
<template>
Hi
</template>- Parent component:
<script setup lang="ts">
import {ref} from 'vue';
import Child from './Child.vue';
const name = ref('Evan');
</script>
<template>
<Child :modelValue="name"
@update:modelValue="v => name = v" />
</template>What is expected?
The argument properly typed, not any, thus no error reporting.
What is actually happening?
The following error message:
> bug-repro@1.0.0 ok
> vue-tsc --noEmit
src/Parent.vue:10:23 - error TS7006: Parameter 'v' implicitly has an 'any' type.
10 @update:modelValue="v => name = v" />
~
Found 1 error in src/Parent.vue:10
Also, Volar in VSCode reports the same error:
System Info
System:
OS: Windows 10 10.0.19045
CPU: (12) x64 Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
Memory: 13.36 GB / 31.95 GB
Binaries:
Node: 18.14.1 - C:\Program Files\Nodejs\node.EXE
npm: 9.7.1 - C:\Program Files\Nodejs\npm.CMD
Browsers:
Chrome: 114.0.5735.134
Edge: Spartan (44.19041.1266.0)
Internet Explorer: 11.0.19041.1566
npmPackages:
vue: ^3.3.4 => 3.3.4Any additional comments?
No response