Vue with TypeScript

Typing Vue Apps

Vue 3 + <script setup lang="ts"> offers excellent TypeScript ergonomics.

Type props/emits and store state for safer refactors.

<script setup lang="ts">
const props = defineProps<{ title: string }>()
</script>

Type-based defineProps.

Tooling

vue-tsc, Volar/Vue - Official extension

• Handle loading and errors.
• Keep composables tested.
• Prefer TypeScript when you can.
• Measure before optimizing.

Vue with TypeScript Cheatsheet

Quick reference for patterns covered in this lesson.

Takeover Mode

Use the official Vue TS extension setup recommended by docs.

Common Mistakes

• any everywhere.
• Skipping vue-tsc in CI.

Key Takeaways

• Vue with TypeScript shows up often in Vue apps.
• Practice with a demo.
• Prefer clear APIs.
• Read official docs for edge cases.