vue-db
frameworkvueVue 3 bindings for TanStack DB. useLiveQuery composable with MaybeRefOrGetter query functions, ComputedRef return values for all fields (data, state, collection, status, isLoading, isReady, isError). Dependency arrays with Vue refs. Conditional queries via returning undefined/null. Pre-created collection support via ref or getter. Import from @tanstack/vue-db (re-exports all of @tanstack/db).
This skill builds on db-core. Read it first for collection setup, query builder, and mutation patterns.
TanStack DB — Vue
Setup
<script setup lang="ts">
import { useLiveQuery, eq, not } from '@tanstack/vue-db'
const { data: todos, isLoading } = useLiveQuery((q) =>
q
.from({ todo: todoCollection })
.where(({ todo }) => not(todo.completed))
.orderBy(({ todo }) => todo.created_at, 'asc'),
)
</script>
<template>
<div v-if="isLoading">Loading...</div>
<ul v-else>
<li v-for="todo in todos" :key="todo.id">{{ todo.text }}</li>
</ul>
</template>
@tanstack/vue-db re-exports everything from @tanstack/db.
Hook
useLiveQuery
All return values are ComputedRef:
// Query function with reactive deps
const minPriority = ref(5)
const { data, isLoading, isReady, status } = useLiveQuery(
(q) =>
q
.from({ todo: todoCollection })
.where(({ todo }) => gt(todo.priority, minPriority.value)),
[minPriority],
)
// Config object
const { data } = useLiveQuery({
query: (q) => q.from({ todo: todoCollection }),
gcTime: 60000,
})
// Pre-created collection (reactive via ref)
const { data } = useLiveQuery(preloadedCollection)
// Conditional query
const userId = ref<number | null>(null)
const { data, status } = useLiveQuery(
(q) => {
if (!userId.value) return undefined
return q
.from({ todo: todoCollection })
.where(({ todo }) => eq(todo.userId, userId.value))
},
[userId],
)
Vue-Specific Patterns
Reactive dependencies with refs
const filter = ref('active')
const { data } = useLiveQuery(
(q) =>
q
.from({ todo: todoCollection })
.where(({ todo }) => eq(todo.status, filter.value)),
[filter],
)
// Query re-runs when filter.value changes
Mutations in event handlers
const handleToggle = (id: number) => {
todoCollection.update(id, (draft) => {
draft.completed = !draft.completed
})
}
Common Mistakes
CRITICAL Missing reactive deps in dependency array
Wrong:
const userId = ref(1)
const { data } = useLiveQuery((q) =>
q
.from({ todo: todoCollection })
.where(({ todo }) => eq(todo.userId, userId.value)),
)
Correct:
const userId = ref(1)
const { data } = useLiveQuery(
(q) =>
q
.from({ todo: todoCollection })
.where(({ todo }) => eq(todo.userId, userId.value)),
[userId],
)
Reactive refs used in the query must be included in the deps array for the query to re-run on changes.
Source: docs/framework/vue/overview.md
See also: db-core/live-queries/SKILL.md — for query builder API.
See also: db-core/mutations-optimistic/SKILL.md — for mutation patterns.