db-core

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TanStack DB core concepts: createCollection with queryCollectionOptions, electricCollectionOptions, powerSyncCollectionOptions, rxdbCollectionOptions, trailbaseCollectionOptions, localOnlyCollectionOptions. Live queries via query builder (from, where, join, select, groupBy, orderBy, limit). Optimistic mutations with draft proxy (collection.insert, collection.update, collection.delete). createOptimisticAction, createTransaction, createPacedMutations. Entry point for all TanStack DB skills.

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Sourcetanstack/db

Added on2026-04-18

NPX Install

npx skill4agent add tanstack/db db-core

SKILL.md Content

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TanStack DB — Core Concepts

TanStack DB is a reactive client-side data store. It loads data into typed collections from any backend (REST APIs, sync engines, local storage), provides sub-millisecond live queries via differential dataflow, and supports instant optimistic mutations with automatic rollback.

Framework packages (

@tanstack/react-db

,

@tanstack/vue-db

,

@tanstack/svelte-db

,

@tanstack/solid-db

) re-export everything from

@tanstack/db

plus framework-specific hooks. In framework projects, import from the framework package directly.

@tanstack/angular-db

is the exception -- import operators from

@tanstack/db

separately.

Sub-Skills

Need to...	Read
Create a collection, pick an adapter, add schema	db-core/collection-setup/SKILL.md
Query data with where, join, groupBy, select	db-core/live-queries/SKILL.md
Insert, update, delete with optimistic UI	db-core/mutations-optimistic/SKILL.md
Build a custom sync adapter	db-core/custom-adapter/SKILL.md
Persist collections to SQLite (offline cache)	db-core/persistence/SKILL.md
Preload collections in route loaders	meta-framework/SKILL.md
Add offline transaction queueing	offline/SKILL.md (in @tanstack/offline-transactions)

For framework-specific hooks:

Framework	Read
React	react-db/SKILL.md
Vue	vue-db/SKILL.md
Svelte	svelte-db/SKILL.md
Solid	solid-db/SKILL.md
Angular	angular-db/SKILL.md

Quick Decision Tree

Setting up for the first time? → db-core/collection-setup
Building queries on collection data? → db-core/live-queries
Writing data / handling optimistic state? → db-core/mutations-optimistic
Using React hooks? → react-db
Preloading in route loaders (Start, Next, Remix)? → meta-framework
Building an adapter for a new backend? → db-core/custom-adapter
Persisting collections to SQLite? → db-core/persistence
Need offline transaction persistence? → offline

Version

Targets @tanstack/db v0.6.0.