vue-typescript
Use when building Vue 3 applications with TypeScript, implementing Composition API components, setting up Pinia stores, or working with Vue Router. Covers script setup, composables, and reactive state.
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- 최근 소스 활동
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- 감지된 SKILL.md 언어
- 영어
- 스타
- 286
- 포크
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SKILL.md
소스 지침 · 읽기 전용 미리보기- name
- vue-typescript
- version
- 1.0.0
- description
- Use when building Vue 3 applications with TypeScript, implementing Composition API components, setting up Pinia stores, or working with Vue Router. Covers script setup, composables, and reactive state.
- keywords
- ["Vue 3","TypeScript","Composition API","Pinia","Vue Router","composables","reactive","script setup"]
- plugin
- dev
- updated
- 2026-01-20T00:00:00.000Z
# Vue 3 + TypeScript Patterns
## Overview
Modern Vue 3 patterns with TypeScript and Composition API for building robust applications.
## Component Patterns
### Script Setup with TypeScript
```vue
<script setup lang="ts">
import { ref, computed } from 'vue';
interface Props {
title: string;
count?: number;
}
const props = withDefaults(defineProps<Props>(), {
count: 0,
});
const emit = defineEmits<{
(e: 'update', value: number): void;
(e: 'close'): void;
}>();
const localCount = ref(props.count);
const doubled = computed(() => localCount.value * 2);
function increment() {
localCount.value++;
emit('update', localCount.value);
}
</script>
<template>
<div>
<h2>{{ title }}</h2>
<p>Count: {{ localCount }} (doubled: {{ doubled }})</p>
<button @click="increment">Increment</button>
</div>
</template>
```
### Generic Components
```vue
<script setup lang="ts" generic="T">
interface Props {
items: T[];
selected?: T;
}
const props = defineProps<Props>();
const emit = defineEmits<{
(e: 'select', item: T): void;
}>();
</script>
<template>
<ul>
<li
v-for="(item, index) in items"
:key="index"
:class="{ selected: item === selected }"
@click="emit('select', item)"
>
<slot :item="item" />
</li>
</ul>
</template>
```
## Composables
### Basic Composable
```ts
// composables/useCounter.ts
import { ref, computed } from 'vue';
interface UseCounterOptions {
initial?: number;
min?: number;
max?: number;
}
export function useCounter(options: UseCounterOptions = {}) {
const { initial = 0, min, max } = options;
const count = ref(initial);
const increment = () => {
if (max === undefined || count.value < max) {
count.value++;
}
};
const decrement = () => {
if (min === undefined || count.value > min) {
count.value--;
}
};
const reset = () => {
count.value = initial;
};
const isAtMin = computed(() => min !== undefined && count.value <= min);
const isAtMax = computed(() => max !== undefined && count.value >= max);
return {
count,
increment,
decrement,
reset,
isAtMin,
isAtMax,
};
}
```
### Data Fetching Composable
```ts
// composables/useFetch.ts
import { ref, watchEffect, type Ref } from 'vue';
interface UseFetchReturn<T> {
data: Ref<T | null>;
error: Ref<Error | null>;
loading: Ref<boolean>;
refetch: () => Promise<void>;
}
export function useFetch<T>(url: string | Ref<string>): UseFetchReturn<T> {
const data = ref<T | null>(null) as Ref<T | null>;
const error = ref<Error | null>(null);
const loading = ref(false);
async function fetchData() {
const urlValue = typeof url === 'string' ? url : url.value;
loading.value = true;
error.value = null;
try {
const response = await fetch(urlValue);
if (!response.ok) throw new Error(`HTTP ${response.status}`);
data.value = await response.json();
} catch (e) {
error.value = e instanceof Error ? e : new Error('Unknown error');
} finally {
loading.value = false;
}
}
watchEffect(() => {
fetchData();
});
return { data, error, loading, refetch: fetchData };
}
```
## State Management (Pinia)
### Store Definition
```ts
// stores/userStore.ts
import { defineStore } from 'pinia';
import { ref, computed } from 'vue';
import type { User } from '@/types';
export const useUserStore = defineStore('user', () => {
// State
const users = ref<User[]>([]);
const currentUserId = ref<string | null>(null);
const loading = ref(false);
// Getters
const currentUser = computed(() =>
users.value.find(u => u.id === currentUserId.value)
);
const userCount = computed(() => users.value.length);
// Actions
async function fetchUsers() {
loading.value = true;
try {
const response = await api.getUsers();
users.value = response.data;
} finally {
loading.value = false;
}
}
function setCurrentUser(userId: string) {
currentUserId.value = userId;
}
return {
users,
currentUserId,
loading,
currentUser,
userCount,
fetchUsers,
setCurrentUser,
};
});
```
### Using Store in Components
```vue
<script setup lang="ts">
import { storeToRefs } from 'pinia';
import { useUserStore } from '@/stores/userStore';
const store = useUserStore();
// Destructure reactive state
const { users, loading, currentUser } = storeToRefs(store);
// Actions don't need storeToRefs
const { fetchUsers, setCurrentUser } = store;
onMounted(() => {
fetchUsers();
});
</script>
```
## Router with TypeScript
### Route Definitions
```ts
// router/index.ts
import { createRouter, createWebHistory, type RouteRecordRaw } from 'vue-router';
const routes: RouteRecordRaw[] = [
{
path: '/',
name: 'home',
component: () => import('@/views/HomeView.vue'),
},
{
path: '/users/:id',
name: 'user',
component: () => import('@/views/UserView.vue'),
props: true,
},
{
path: '/admin',
name: 'admin',
component: () => import('@/views/AdminView.vue'),
meta: { requiresAuth: true },
},
];
export const router = createRouter({
history: createWebHistory(),
routes,
});
```
### Typed Route Params
```vue
<script setup lang="ts">
import { useRoute, useRouter } from 'vue-router';
const route = useRoute();
const router = useRouter();
// Typed param access
const userId = computed(() => route.params.id as string);
function goToUser(id: string) {
router.push({ name: 'user', params: { id } });
}
</script>
```
## Form Handling
### VeeValidate with Zod
```vue
<script setup lang="ts">
import { useForm } from 'vee-validate';
import { toTypedSchema } from '@vee-validate/zod';
import { z } from 'zod';
const schema = toTypedSchema(
z.object({
email: z.string().email('Invalid email'),
password: z.string().min(8, 'Password must be at least 8 characters'),
})
);
const { handleSubmit, errors, defineField } = useForm({
validationSchema: schema,
});
const [email, emailAttrs] = defineField('email');
const [password, passwordAttrs] = defineField('password');
const onSubmit = handleSubmit((values) => {
console.log('Form submitted:', values);
});
</script>
<template>
<form @submit="onSubmit">
<input v-model="email" v-bind="emailAttrs" type="email" />
<span v-if="errors.email">{{ errors.email }}</span>
<input v-model="password" v-bind="passwordAttrs" type="password" />
<span v-if="errors.password">{{ errors.password }}</span>
<button type="submit">Submit</button>
</form>
</template>
```
## Provide/Inject with TypeScript
```ts
// Injection key with type
import type { InjectionKey } from 'vue';
interface ThemeContext {
theme: Ref<'light' | 'dark'>;
toggleTheme: () => void;
}
export const themeKey: InjectionKey<ThemeContext> = Symbol('theme');
// Provider component
const theme = ref<'light' | 'dark'>('light');
const toggleTheme = () => {
theme.value = theme.value === 'light' ? 'dark' : 'light';
};
provide(themeKey, { theme, toggleTheme });
// Consumer component
const themeContext = inject(themeKey);
if (!themeContext) throw new Error('Theme context not provided');
```
## Performance
### Lazy Loading Components
```ts
import { defineAsyncComponent } from 'vue';
const AsyncModal = defineAsyncComponent(() =>
import('@/components/Modal.vue')
);
const AsyncModalWithOptions = defineAsyncComponent({
loader: () => import('@/components/Modal.vue'),
loadingComponent: LoadingSpinner,
errorComponent: ErrorDisplay,
delay: 200,
timeout: 3000,
});
```
## File Structure
```
src/
├── components/
│ ├── common/
│ │ ├── BaseButton.vue
│ │ └── BaseInput.vue
│ ├── layout/
│ │ ├── AppHeader.vue
│ │ └── AppSidebar.vue
│ └── features/
│ └── users/
├── composables/
│ ├── useAuth.ts
│ └── useFetch.ts
├── stores/
│ ├── userStore.ts
│ └── appStore.ts
├── views/
│ ├── HomeView.vue
│ └── UserView.vue
├── router/
│ └── index.ts
├── types/
│ └── index.ts
└── App.vue
```
---
*Vue 3 + TypeScript patterns for modern frontend development*
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