TS2339 since 3.1.6+ for non-SFC components #5838
Description
Vue - Official extension or vue-tsc version
3.1.8
VSCode version
none
Vue version
3.5.25
TypeScript version
5.9.3
System Info
System:
OS: macOS 26.1
CPU: (12) arm64 Apple M2 Max
Memory: 5.77 GB / 64.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.8.0 - /Users/markus/.nvm/versions/node/v24.8.0/bin/node
npm: 11.6.4 - /Users/markus/.nvm/versions/node/v24.8.0/bin/npm
pnpm: 10.25.0 - /Users/markus/.nvm/versions/node/v24.8.0/bin/pnpm
Browsers:
Chrome: 143.0.7499.41
Firefox: 141.0
Safari: 26.1package.json dependencies
{
"type": "module",
"devDependencies": {
"@types/node": "24.10.2",
"@vitejs/plugin-vue": "6.0.2",
"@vitest/ui": "4.0.15",
"@vue/test-utils": "2.4.6",
"@vueuse/core": "14.1.0",
"chokidar-cli": "3.0.0",
"jsdom": "27.3.0",
"pinia": "3.0.4",
"pug": "3.0.3",
"sass": "1.95.0",
"typescript": "5.9.3",
"vite": "7.2.7",
"vite-plugin-dts": "4.5.4",
"vite-plugin-vuetify": "2.1.2",
"vitest": "4.0.15",
"vue": "3.5.25",
"vue-component-type-helpers": "3.1.8",
"vue-i18n": "11.2.2",
"vue-router": "4.6.3",
"vue-tsc": "3.1.8",
"vuetify": "3.11.3"
}
}Steps to reproduce
Try to compile a non-SFC component:
<template lang="pug">...</template>
<script lang="ts" src="./Bug.ts"></script>With at least one return in Bug.ts that is used in Bug.vue.
What is expected?
No error.
What is actually happening?
src/components/Dialogs/ADeleteDialog/ADeleteDialog.vue(5,18): error TS2339: Property 'cancelLabel' does not exist on type 'CreateComponentPublicInstanceWithMixins<ToResolvedProps<{}, {}>, {}, {}, {}, {}, ComponentOptionsMixin, ComponentOptionsMixin, {}, PublicProps, ... 16 more ..., {}>'.
src/components/Dialogs/ADeleteDialog/ADeleteDialog.vue(13,18): error TS2339: Property 'context' does not exist on type 'CreateComponentPublicInstanceWithMixins<ToResolvedProps<{}, {}>, {}, {}, {}, {}, ComponentOptionsMixin, ComponentOptionsMixin, {}, PublicProps, ... 16 more ..., {}>'.
cancelLabel is a prop.
context is a return value.
It looks like there is an TS2339 error for each value that makes it into the .vue.
Link to minimal reproduction
No response
Any additional comments?
The last working version is 3.1.5. In 3.1.6 and 3.1.7 these errors vary a bit.