TypeScript Setup in Vue Projects
vite.config.ts, tsconfig.json, vue-tsc, lang='ts' in SFCs, IDE TypeScript support.
TypeScript Setup in Vue Projects is a free Vue Academy lesson on CoddyKit — lesson 1 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Vue Academy learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.
TypeScript in Vue 3
Vue 3 was rewritten in TypeScript, so it offers excellent type support. A well-configured project catches bugs at compile time and powers great editor autocomplete in .vue files.
Scaffolding With TS
The easiest start is create-vue, which asks whether to add TypeScript and wires up tsconfig.json, vue-tsc, and the right tooling.
npm create vue@latest
# select "Add TypeScript? Yes"tsconfig.json Basics
The tsconfig.json controls compilation. The most important setting for catching bugs is strict mode.
{
"compilerOptions": {
"strict": true,
"target": "ESNext",
"module": "ESNext"
}
}Why strict Mode Matters
strict: true enables strictNullChecks, noImplicitAny, and more. It forces you to handle null/undefined and stops untyped values from slipping through.
Path Aliases
The @/ alias maps to your src folder so imports stay clean regardless of file depth. Configure it in both tsconfig.json and your bundler.
{
"compilerOptions": {
"baseUrl": ".",
"paths": {
"@/*": ["./src/*"]
}
}
}Using the Alias
Now imports reference modules from the project root, not relative ../../ chains.
import Button from '@/components/Button.vue'
import { useAuth } from '@/composables/useAuth'TypeScript in SFCs
To use TypeScript inside a Single File Component, add lang="ts" to the script tag. With <script setup> this unlocks typed macros.
<script setup lang="ts">
const count: number = 0
</script>Type Checking SFCs
The regular tsc compiler does not understand .vue files. Vue ships vue-tsc, a wrapper that type-checks templates and scripts together.
vue-tsc --noEmitAdding a Check Script
Add a script to package.json so CI and you can verify types in one command.
{
"scripts": {
"type-check": "vue-tsc --noEmit"
}
}Editor Support With Volar
The Volar (Vue - Official) VS Code extension provides TypeScript intelligence inside .vue files: autocomplete, go-to-definition, and template type errors. Disable the old Vetur to avoid conflicts.
Takeoff Mode
Volar can run in Takeover Mode, replacing the built-in TS extension so it handles both .ts and .vue files. This improves performance and consistency in large projects.
Quick Check
Test your TypeScript setup knowledge.
Recap
You set up TypeScript in Vue:
- Enable strict mode in tsconfig.json for the strongest checks.
- Configure the @/* path alias to src.
- Add lang="ts" to SFC scripts.
- Type-check with vue-tsc --noEmit and use the Volar extension in VS Code.
Frequently asked questions
Is the “TypeScript Setup in Vue Projects” lesson free?
Yes — the full text of “TypeScript Setup in Vue Projects” is free to read here on the web, and the Vue Academy course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Vue Academy course, upgrade to CoddyKit PRO.
What will I learn in “TypeScript Setup in Vue Projects”?
vite.config.ts, tsconfig.json, vue-tsc, lang='ts' in SFCs, IDE TypeScript support. You practise Vue Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Vue Academy?
No prior experience is required. Vue Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 1 of 4, so you can start here or from the beginning and move at your own pace.
How long does the “TypeScript Setup in Vue Projects” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Vue Academy lesson?
Yes. Every Vue Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- TypeScript Setup in Vue Projects
- Typed Props and Emits with defineProps/defineEmits
- Typing Composables and Refs
- Generic Vue Components