[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill-tanstack-db-corecustom-adapter":3,"mdc--sv7g1l-key":32,"related-org-tanstack-db-corecustom-adapter":6198,"related-repo-tanstack-db-corecustom-adapter":6342},{"slug":4,"name":5,"fn":6,"description":7,"org":8,"tags":12,"stars":21,"repoUrl":22,"updatedAt":23,"license":24,"forks":25,"topics":26,"repo":27,"sourceUrl":30,"mdContent":31},"db-corecustom-adapter","db-core\u002Fcustom-adapter","build custom TanStack collection adapters","Building custom collection adapters for new backends. SyncConfig interface: sync function receiving begin, write, commit, markReady, truncate, metadata primitives. ChangeMessage format (insert, update, delete). loadSubset for on-demand sync. LoadSubsetOptions (where, orderBy, limit, cursor). Expression parsing: parseWhereExpression, parseOrderByExpression, extractSimpleComparisons, parseLoadSubsetOptions. Collection options creator pattern. rowUpdateMode (partial vs full). Subscription lifecycle and cleanup functions. Persisted sync metadata API (metadata.row and metadata.collection) for storing per-row and per-collection adapter state.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},"tanstack","TanStack","https:\u002F\u002Fpexgzepcugksgbtrxkhf.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Forg-logos\u002Ftanstack.png",[13,17,20],{"name":14,"slug":15,"type":16},"Database","database","tag",{"name":18,"slug":19,"type":16},"Engineering","engineering",{"name":10,"slug":9,"type":16},3811,"https:\u002F\u002Fgithub.com\u002FTanStack\u002Fdb","2026-07-16T06:04:06.862485",null,245,[],{"repoUrl":22,"stars":21,"forks":25,"topics":28,"description":29},[],"The reactive client store for your API.","https:\u002F\u002Fgithub.com\u002FTanStack\u002Fdb\u002Ftree\u002FHEAD\u002Fpackages\u002Fdb\u002Fskills\u002Fdb-core\u002Fcustom-adapter","---\nname: db-core\u002Fcustom-adapter\ndescription: >\n Building custom collection adapters for new backends. SyncConfig interface:\n sync function receiving begin, write, commit, markReady, truncate, metadata\n primitives. ChangeMessage format (insert, update, delete). loadSubset for\n on-demand sync. LoadSubsetOptions (where, orderBy, limit, cursor). Expression\n parsing: parseWhereExpression, parseOrderByExpression,\n extractSimpleComparisons, parseLoadSubsetOptions. Collection options creator\n pattern. rowUpdateMode (partial vs full). Subscription lifecycle and cleanup\n functions. Persisted sync metadata API (metadata.row and metadata.collection)\n for storing per-row and per-collection adapter state.\ntype: sub-skill\nlibrary: db\nlibrary_version: '0.6.0'\nsources:\n - 'TanStack\u002Fdb:docs\u002Fguides\u002Fcollection-options-creator.md'\n - 'TanStack\u002Fdb:packages\u002Fdb\u002Fsrc\u002Fcollection\u002Fsync.ts'\n---\n\nThis skill builds on db-core and db-core\u002Fcollection-setup. Read those first.\n\n# Custom Adapter Authoring\n\n## Setup\n\n```ts\nimport { createCollection } from '@tanstack\u002Fdb'\nimport type { SyncConfig, CollectionConfig } from '@tanstack\u002Fdb'\n\ninterface MyItem {\n id: string\n name: string\n}\n\nfunction myBackendCollectionOptions\u003CT>(config: {\n endpoint: string\n getKey: (item: T) => string\n}): CollectionConfig\u003CT, string, {}> {\n return {\n getKey: config.getKey,\n sync: {\n sync: ({ begin, write, commit, markReady, metadata, collection }) => {\n let isInitialSyncComplete = false\n const bufferedEvents: Array\u003Cany> = []\n\n \u002F\u002F 1. Subscribe to real-time events FIRST\n const unsubscribe = myWebSocket.subscribe(config.endpoint, (event) => {\n if (!isInitialSyncComplete) {\n bufferedEvents.push(event)\n return\n }\n begin()\n write({ type: event.type, key: event.id, value: event.data })\n commit()\n })\n\n \u002F\u002F 2. Fetch initial data\n fetch(config.endpoint).then(async (res) => {\n const items = await res.json()\n begin()\n for (const item of items) {\n write({ type: 'insert', value: item })\n }\n commit()\n\n \u002F\u002F 3. Process buffered events\n isInitialSyncComplete = true\n for (const event of bufferedEvents) {\n begin()\n write({ type: event.type, key: event.id, value: event.data })\n commit()\n }\n\n \u002F\u002F 4. Signal readiness\n markReady()\n })\n\n \u002F\u002F 5. Return cleanup function\n return () => {\n unsubscribe()\n }\n },\n rowUpdateMode: 'partial',\n },\n onInsert: async ({ transaction }) => {\n await fetch(config.endpoint, {\n method: 'POST',\n body: JSON.stringify(transaction.mutations[0].modified),\n })\n },\n onUpdate: async ({ transaction }) => {\n const mut = transaction.mutations[0]\n await fetch(`${config.endpoint}\u002F${mut.key}`, {\n method: 'PATCH',\n body: JSON.stringify(mut.changes),\n })\n },\n onDelete: async ({ transaction }) => {\n await fetch(`${config.endpoint}\u002F${transaction.mutations[0].key}`, {\n method: 'DELETE',\n })\n },\n }\n}\n```\n\n## Core Patterns\n\n### ChangeMessage format\n\n```ts\n\u002F\u002F Insert\nwrite({ type: 'insert', value: item })\n\n\u002F\u002F Update (partial — only changed fields)\nwrite({ type: 'update', key: itemId, value: partialItem })\n\n\u002F\u002F Update (full row replacement)\nwrite({ type: 'update', key: itemId, value: fullItem })\n\u002F\u002F Set rowUpdateMode: \"full\" in sync config\n\n\u002F\u002F Delete\nwrite({ type: 'delete', key: itemId, value: item })\n```\n\n### On-demand sync with loadSubset\n\n```ts\nimport { parseLoadSubsetOptions } from \"@tanstack\u002Fdb\"\n\nsync: {\n sync: ({ begin, write, commit, markReady }) => {\n \u002F\u002F Initial sync...\n markReady()\n return () => {}\n },\n loadSubset: async (options) => {\n const { filters, sorts, limit, offset } = parseLoadSubsetOptions(options)\n \u002F\u002F filters: [{ field: ['category'], operator: 'eq', value: 'electronics' }]\n \u002F\u002F sorts: [{ field: ['price'], direction: 'asc', nulls: 'last' }]\n const params = new URLSearchParams()\n for (const f of filters) {\n params.set(f.field.join(\".\"), `${f.operator}:${f.value}`)\n }\n const res = await fetch(`\u002Fapi\u002Fitems?${params}`)\n return res.json()\n },\n}\n```\n\n### Managing optimistic state duration\n\nMutation handlers must not resolve until server changes have synced back to the collection. Five strategies:\n\n1. **Refetch** (simplest): `await collection.utils.refetch()`\n2. **Transaction ID**: return `{ txid }` and track via sync stream\n3. **ID-based tracking**: await specific record ID appearing in sync stream\n4. **Version\u002Ftimestamp**: wait until sync stream catches up to mutation time\n5. **Provider method**: `await backend.waitForPendingWrites()`\n\n### Persisted sync metadata\n\nThe `metadata` API on the sync config allows adapters to store per-row and per-collection metadata that persists across sync transactions. This is useful for tracking resume tokens, cursors, LSNs, or other adapter-specific state.\n\nThe `metadata` object is available as a property on the sync config argument alongside `begin`, `write`, `commit`, etc. It is always provided, but without persistence the metadata is in-memory only and does not survive reloads. With persistence, metadata is durable across sessions.\n\n```ts\nsync: ({ begin, write, commit, markReady, metadata }) => {\n \u002F\u002F Row metadata: store per-row state (e.g. server version, ETag)\n metadata.row.get(key) \u002F\u002F => unknown | undefined\n metadata.row.set(key, { version: 3, etag: 'abc' })\n metadata.row.delete(key)\n\n \u002F\u002F Collection metadata: store per-collection state (e.g. resume cursor)\n metadata.collection.get('cursor') \u002F\u002F => unknown | undefined\n metadata.collection.set('cursor', 'token_abc123')\n metadata.collection.delete('cursor')\n metadata.collection.list() \u002F\u002F => [{ key: 'cursor', value: 'token_abc123' }]\n metadata.collection.list('resume') \u002F\u002F filter by prefix\n}\n```\n\nRow metadata writes are tied to the current transaction. When a row is deleted via `write({ type: 'delete', ... })`, its row metadata is automatically deleted. When a row is inserted, its metadata is set from `message.metadata` if provided, or deleted otherwise.\n\nCollection metadata writes staged before `truncate()` are preserved and commit atomically with the truncate transaction.\n\n**Typical usage — resume token:**\n\n```ts\nsync: ({ begin, write, commit, markReady, metadata }) => {\n const lastCursor = metadata.collection.get('cursor') as string | undefined\n\n const stream = subscribeFromCursor(lastCursor)\n stream.on('data', (batch) => {\n begin()\n for (const item of batch.items) {\n write({ type: item.type, key: item.id, value: item.data })\n }\n metadata.collection.set('cursor', batch.cursor)\n commit()\n })\n\n stream.on('ready', () => markReady())\n return () => stream.close()\n}\n```\n\n### Expression parsing for predicate push-down\n\n```ts\nimport {\n parseWhereExpression,\n parseOrderByExpression,\n extractSimpleComparisons,\n} from '@tanstack\u002Fdb'\n\n\u002F\u002F In loadSubset or queryFn:\nconst comparisons = extractSimpleComparisons(options.where)\n\u002F\u002F Returns: [{ field: ['name'], operator: 'eq', value: 'John' }]\n\nconst orderBy = parseOrderByExpression(options.orderBy)\n\u002F\u002F Returns: [{ field: ['created_at'], direction: 'desc', nulls: 'last' }]\n```\n\n## Common Mistakes\n\n### CRITICAL Not calling markReady() in sync implementation\n\nWrong:\n\n```ts\nsync: ({ begin, write, commit }) => {\n fetchData().then((items) => {\n begin()\n items.forEach((item) => write({ type: 'insert', value: item }))\n commit()\n \u002F\u002F forgot markReady()!\n })\n}\n```\n\nCorrect:\n\n```ts\nsync: ({ begin, write, commit, markReady }) => {\n fetchData().then((items) => {\n begin()\n items.forEach((item) => write({ type: 'insert', value: item }))\n commit()\n markReady()\n })\n}\n```\n\n`markReady()` transitions the collection to \"ready\" status. Without it, live queries never resolve and `useLiveSuspenseQuery` hangs forever in Suspense.\n\nSource: docs\u002Fguides\u002Fcollection-options-creator.md\n\n### HIGH Race condition: subscribing after initial fetch\n\nWrong:\n\n```ts\nsync: ({ begin, write, commit, markReady }) => {\n fetchAll().then((data) => {\n writeAll(data)\n subscribe(onChange) \u002F\u002F changes during fetch are LOST\n markReady()\n })\n}\n```\n\nCorrect:\n\n```ts\nsync: ({ begin, write, commit, markReady }) => {\n const buffer = []\n subscribe((event) => {\n if (!ready) {\n buffer.push(event)\n return\n }\n begin()\n write(event)\n commit()\n })\n fetchAll().then((data) => {\n writeAll(data)\n ready = true\n buffer.forEach((e) => {\n begin()\n write(e)\n commit()\n })\n markReady()\n })\n}\n```\n\nSubscribe to real-time events before fetching initial data. Buffer events during the fetch, then replay them after the initial sync completes.\n\nSource: docs\u002Fguides\u002Fcollection-options-creator.md\n\n### HIGH write() called without begin()\n\nWrong:\n\n```ts\nonMessage((event) => {\n write({ type: event.type, key: event.id, value: event.data })\n commit()\n})\n```\n\nCorrect:\n\n```ts\nonMessage((event) => {\n begin()\n write({ type: event.type, key: event.id, value: event.data })\n commit()\n})\n```\n\nSync data must be written within a transaction (`begin` → `write` → `commit`). Calling `write()` without `begin()` throws `NoPendingSyncTransactionWriteError`.\n\nSource: packages\u002Fdb\u002Fsrc\u002Fcollection\u002Fsync.ts:110\n\n## Tension: Simplicity vs. Correctness in Sync\n\nGetting-started simplicity (localOnly, eager mode) conflicts with production correctness (on-demand sync, race condition prevention, proper markReady handling). Agents optimizing for quick setup tend to skip buffering, markReady, and cleanup functions.\n\nSee also: db-core\u002Fcollection-setup\u002FSKILL.md — for built-in adapter patterns to model after.\n",{"data":33,"body":40},{"name":5,"description":7,"type":34,"library":35,"library_version":36,"sources":37},"sub-skill","db","0.6.0",[38,39],"TanStack\u002Fdb:docs\u002Fguides\u002Fcollection-options-creator.md","TanStack\u002Fdb:packages\u002Fdb\u002Fsrc\u002Fcollection\u002Fsync.ts",{"type":41,"children":42},"root",[43,51,58,65,2199,2205,2212,2571,2577,3157,3163,3168,3244,3250,3263,3296,3796,3817,3830,3838,4422,4428,4613,4619,4625,4630,4871,4876,5123,5142,5147,5153,5157,5338,5342,5783,5788,5792,5798,5802,5956,5960,6123,6171,6176,6182,6187,6192],{"type":44,"tag":45,"props":46,"children":47},"element","p",{},[48],{"type":49,"value":50},"text","This skill builds on db-core and db-core\u002Fcollection-setup. Read those first.",{"type":44,"tag":52,"props":53,"children":55},"h1",{"id":54},"custom-adapter-authoring",[56],{"type":49,"value":57},"Custom Adapter Authoring",{"type":44,"tag":59,"props":60,"children":62},"h2",{"id":61},"setup",[63],{"type":49,"value":64},"Setup",{"type":44,"tag":66,"props":67,"children":72},"pre",{"className":68,"code":69,"language":70,"meta":71,"style":71},"language-ts shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { createCollection } from '@tanstack\u002Fdb'\nimport type { SyncConfig, CollectionConfig } from '@tanstack\u002Fdb'\n\ninterface MyItem {\n id: string\n name: string\n}\n\nfunction myBackendCollectionOptions\u003CT>(config: {\n endpoint: string\n getKey: (item: T) => string\n}): CollectionConfig\u003CT, string, {}> {\n return {\n getKey: config.getKey,\n sync: {\n sync: ({ begin, write, commit, markReady, metadata, collection }) => {\n let isInitialSyncComplete = false\n const bufferedEvents: Array\u003Cany> = []\n\n \u002F\u002F 1. 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Load before inventing an API when code sees a type error, undefined feature method, absent object key, adapter mismatch, or v8-shaped example.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6222,6225,6226],{"name":6223,"slug":6224,"type":16},"Debugging","debugging",{"name":6210,"slug":6211,"type":16},{"name":10,"slug":9,"type":16},"2026-07-30T05:26:05.418735",{"slug":6229,"name":6229,"fn":6230,"description":6231,"org":6232,"tags":6233,"stars":6213,"repoUrl":6214,"updatedAt":6239},"cell-selection","select rectangular cell ranges in tables","Select rectangular cell ranges with cellSelectionFeature: two-corner range state keyed by row and column id, mousedown\u002Fmouseenter handlers, selection edges, render-order resolution under pinning, and autoResetCellSelection. Load when ranges widen unexpectedly after sorting or column reordering, when a drag re-renders the whole table, or when building copy-to-clipboard from a selection.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6234,6235,6236],{"name":6207,"slug":6208,"type":16},{"name":10,"slug":9,"type":16},{"name":6237,"slug":6238,"type":16},"UI Components","ui-components","2026-07-30T05:25:38.403427",{"slug":6241,"name":6241,"fn":6242,"description":6243,"org":6244,"tags":6245,"stars":6213,"repoUrl":6214,"updatedAt":6254},"client-vs-server","manage TanStack Table data pipelines","Choose client or server ownership for filtering, grouping, sorting, expanding, and pagination in TanStack Table v9. Load for manual* flags, mixed pipelines, server counts, or deciding which dataset each row-model stage receives.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6246,6249,6250,6253],{"name":6247,"slug":6248,"type":16},"Data Pipeline","data-pipeline",{"name":6210,"slug":6211,"type":16},{"name":6251,"slug":6252,"type":16},"Performance","performance",{"name":10,"slug":9,"type":16},"2026-07-30T05:25:45.400104",{"slug":6256,"name":6256,"fn":6257,"description":6258,"org":6259,"tags":6260,"stars":6213,"repoUrl":6214,"updatedAt":6266},"column-faceting","build faceted filter UIs","Build faceted filter UIs with columnFacetingFeature, facetedRowModel, facetedUniqueValues, and facetedMinMaxValues. Load for facet counts, numeric ranges, own-filter exclusion, or server-page facet completeness.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6261,6264,6265],{"name":6262,"slug":6263,"type":16},"Data Visualization","data-visualization",{"name":6210,"slug":6211,"type":16},{"name":10,"slug":9,"type":16},"2026-07-30T05:25:41.397257",{"slug":6268,"name":6268,"fn":6269,"description":6270,"org":6271,"tags":6272,"stars":6213,"repoUrl":6214,"updatedAt":6276},"column-filtering","implement column filtering in TanStack Table","Filter columns with columnFilteringFeature, filteredRowModel, filterFns, filterMeta, nested-row direction, and manualFiltering. Load for accessor compatibility, controlled filter updaters, fuzzy metadata, or client\u002Fserver ownership.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6273,6274,6275],{"name":6207,"slug":6208,"type":16},{"name":6210,"slug":6211,"type":16},{"name":10,"slug":9,"type":16},"2026-07-30T05:25:53.391632",{"slug":6278,"name":6278,"fn":6279,"description":6280,"org":6281,"tags":6282,"stars":6213,"repoUrl":6214,"updatedAt":6286},"column-ordering","manage TanStack Table column ordering","Control TanStack Table v9 leaf columnOrder with stable IDs while accounting for pinning regions, visibility, and groupedColumnMode precedence. Load for drag-and-drop columns or rendered order that differs from state.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6283,6284,6285],{"name":6210,"slug":6211,"type":16},{"name":10,"slug":9,"type":16},{"name":6237,"slug":6238,"type":16},"2026-07-30T05:26:03.37801",{"slug":6288,"name":6288,"fn":6289,"description":6290,"org":6291,"tags":6292,"stars":6213,"repoUrl":6214,"updatedAt":6299},"column-pinning","configure column pinning in TanStack Table","Pin columns into logical start, center, and end regions with columnPinningFeature and renderer-owned sticky CSS. Load for RTL offsets, z-index, backgrounds, overflow, widths, gaps, or overlaps.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6293,6296,6297,6298],{"name":6294,"slug":6295,"type":16},"CSS","css",{"name":6210,"slug":6211,"type":16},{"name":10,"slug":9,"type":16},{"name":6237,"slug":6238,"type":16},"2026-07-30T05:25:55.377366",{"slug":6301,"name":6301,"fn":6302,"description":6303,"org":6304,"tags":6305,"stars":6213,"repoUrl":6214,"updatedAt":6309},"column-resizing","implement column resizing in TanStack Table","Wire columnResizingFeature, header.getResizeHandler, resize mode and direction, pointer or touch events, and performant CSS-variable updates. Load when resize state changes but widths do not, or large tables resize slowly.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6306,6307,6308],{"name":6210,"slug":6211,"type":16},{"name":10,"slug":9,"type":16},{"name":6237,"slug":6238,"type":16},"2026-07-30T05:25:51.400011",{"slug":6311,"name":6311,"fn":6312,"description":6313,"org":6314,"tags":6315,"stars":6213,"repoUrl":6214,"updatedAt":6320},"column-sizing","configure column sizing in TanStack Table","Use columnSizingFeature numeric size, minSize, maxSize, getSize, getStart, getAfter, and total-size APIs in table, grid, or flex CSS. Load for auto or percentage misconceptions and sizing\u002Fpinning layout mismatch.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6316,6317,6318,6319],{"name":6294,"slug":6295,"type":16},{"name":6210,"slug":6211,"type":16},{"name":10,"slug":9,"type":16},{"name":6237,"slug":6238,"type":16},"2026-07-30T05:25:48.703799",{"slug":6322,"name":6322,"fn":6323,"description":6324,"org":6325,"tags":6326,"stars":6213,"repoUrl":6214,"updatedAt":6330},"column-visibility","manage column visibility in TanStack Table","Hide columns with columnVisibilityFeature while rendering visibility-aware header, column, and cell collections. Load when hidden columns remain in the DOM, false-versus-absent state is confused, or enableHiding is misunderstood.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6327,6328,6329],{"name":6210,"slug":6211,"type":16},{"name":10,"slug":9,"type":16},{"name":6237,"slug":6238,"type":16},"2026-07-30T05:25:47.367943",{"slug":6332,"name":6332,"fn":6333,"description":6334,"org":6335,"tags":6336,"stars":6213,"repoUrl":6214,"updatedAt":6340},"core","build data grids with TanStack Table","Use TanStack Table v9 as a headless data-grid state and row-processing engine. Load for first-table architecture, stable data and columns, row numbering with getDisplayIndex, semantic rendering, framework adapter choice, or deciding what Table owns versus the renderer.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6337,6338,6339],{"name":6207,"slug":6208,"type":16},{"name":6210,"slug":6211,"type":16},{"name":6237,"slug":6238,"type":16},"2026-07-30T05:25:52.366295",125,{"items":6343,"total":416},[6344,6358,6370,6381,6387,6400,6411],{"slug":6345,"name":6345,"fn":6346,"description":6347,"org":6348,"tags":6349,"stars":21,"repoUrl":22,"updatedAt":6357},"angular-db","integrate TanStack DB with Angular","Angular bindings for TanStack DB. injectLiveQuery inject function with Angular signals (Signal\u003CT>) for all return values. Reactive params pattern ({ params: () => T, query: ({ params, q }) => QueryBuilder }) for dynamic queries. Must be called in injection context. Angular 17+ control flow (@if, @for) and signal inputs supported. Import from @tanstack\u002Fangular-db (re-exports all of @tanstack\u002Fdb).\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6350,6353,6354],{"name":6351,"slug":6352,"type":16},"Angular","angular",{"name":14,"slug":15,"type":16},{"name":6355,"slug":6356,"type":16},"TypeScript","typescript","2026-07-16T06:01:16.345046",{"slug":6359,"name":6359,"fn":6360,"description":6361,"org":6362,"tags":6363,"stars":21,"repoUrl":22,"updatedAt":6369},"db-core","manage database collections with TanStack DB","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.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6364,6367,6368],{"name":6365,"slug":6366,"type":16},"Data Modeling","data-modeling",{"name":14,"slug":15,"type":16},{"name":10,"slug":9,"type":16},"2026-07-17T06:06:40.214285",{"slug":6371,"name":6372,"fn":6373,"description":6374,"org":6375,"tags":6376,"stars":21,"repoUrl":22,"updatedAt":6380},"db-corecollection-setup","db-core\u002Fcollection-setup","set up typed collections in TanStack DB","Creating typed collections with createCollection. Adapter selection: queryCollectionOptions (REST\u002FTanStack Query), electricCollectionOptions (ElectricSQL real-time sync), powerSyncCollectionOptions (PowerSync SQLite), rxdbCollectionOptions (RxDB), trailbaseCollectionOptions (TrailBase), localOnlyCollectionOptions, localStorageCollectionOptions. 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Includes subqueries for hierarchical data. toArray and concat(toArray(...)) scalar includes. queryOnce for one-shot queries. createEffect for reactive side effects (onEnter, onUpdate, onExit, onBatch).\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6394,6395,6398],{"name":14,"slug":15,"type":16},{"name":6396,"slug":6397,"type":16},"SQL","sql",{"name":10,"slug":9,"type":16},"2026-07-16T06:04:08.757365",{"slug":6401,"name":6402,"fn":6403,"description":6404,"org":6405,"tags":6406,"stars":21,"repoUrl":22,"updatedAt":6410},"db-coremutations-optimistic","db-core\u002Fmutations-optimistic","manage optimistic mutations in TanStack DB","collection.insert, collection.update (Immer-style draft proxy), collection.delete. createOptimisticAction (onMutate + mutationFn). createPacedMutations with debounceStrategy, throttleStrategy, queueStrategy. createTransaction, getActiveTransaction, ambient transaction context. Transaction lifecycle (pending\u002Fpersisting\u002Fcompleted\u002Ffailed). Mutation merging. onInsert\u002FonUpdate\u002FonDelete handlers. PendingMutation type. Transaction.isPersisted.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6407,6408,6409],{"name":14,"slug":15,"type":16},{"name":6210,"slug":6211,"type":16},{"name":10,"slug":9,"type":16},"2026-07-26T05:48:57.301803",{"slug":6412,"name":6413,"fn":6414,"description":6415,"org":6416,"tags":6417,"stars":21,"repoUrl":22,"updatedAt":6426},"db-corepersistence","db-core\u002Fpersistence","implement SQLite-backed persistence for TanStack DB","SQLite-backed persistence for TanStack DB collections. persistedCollectionOptions wraps any adapter (Electric, Query, PowerSync, or local-only) with durable local storage. Platform adapters: browser (WA-SQLite OPFS), React Native (op-sqlite), Expo (expo-sqlite), Electron (IPC), Node (better-sqlite3), Capacitor, Tauri, Cloudflare Durable Objects. Multi-tab\u002Fmulti-process coordination via BrowserCollectionCoordinator \u002F ElectronCollectionCoordinator \u002F SingleProcessCoordinator. schemaVersion for migration resets. Local-only mode for offline-first without a server.\n",{"slug":9,"name":10,"logoUrl":11,"githubOrg":10},[6418,6419,6422,6425],{"name":14,"slug":15,"type":16},{"name":6420,"slug":6421,"type":16},"Persistence","persistence",{"name":6423,"slug":6424,"type":16},"SQLite","sqlite",{"name":10,"slug":9,"type":16},"2026-07-17T06:06:39.182084"]