@tanstack/db/dist/cjs/query/query-once.cjs.map

A reactive client store for building super fast apps on sync

{"version":3,"file":"query-once.cjs","sources":["../../../src/query/query-once.ts"],"sourcesContent":["import { createLiveQueryCollection } from './live-query-collection.js'\nimport type { InitialQueryBuilder, QueryBuilder } from './builder/index.js'\nimport type { Context, InferResultType } from './builder/types.js'\n\n/**\n * Configuration options for queryOnce\n */\nexport interface QueryOnceConfig<TContext extends Context> {\n  /**\n   * Query builder function that defines the query\n   */\n  query:\n    | ((q: InitialQueryBuilder) => QueryBuilder<TContext>)\n    | QueryBuilder<TContext>\n  // Future: timeout, signal, etc.\n}\n\n// Overload 1: Simple query function returning array (non-single result)\n/**\n * Executes a one-shot query and returns the results as an array.\n *\n * This function creates a live query collection, preloads it, extracts the results,\n * and automatically cleans up the collection. It's ideal for:\n * - AI/LLM context building\n * - Data export\n * - Background processing\n * - Testing\n *\n * @param queryFn - A function that receives the query builder and returns a query\n * @returns A promise that resolves to an array of query results\n *\n * @example\n * ```typescript\n * // Basic query\n * const users = await queryOnce((q) =>\n *   q.from({ user: usersCollection })\n * )\n *\n * // With filtering and projection\n * const activeUserNames = await queryOnce((q) =>\n *   q.from({ user: usersCollection })\n *    .where(({ user }) => eq(user.active, true))\n *    .select(({ user }) => ({ name: user.name }))\n * )\n * ```\n */\nexport function queryOnce<TContext extends Context>(\n  queryFn: (q: InitialQueryBuilder) => QueryBuilder<TContext>,\n): Promise<InferResultType<TContext>>\n\n// Overload 2: Config object form returning array (non-single result)\n/**\n * Executes a one-shot query using a configuration object.\n *\n * @param config - Configuration object with the query function\n * @returns A promise that resolves to an array of query results\n *\n * @example\n * ```typescript\n * const recentOrders = await queryOnce({\n *   query: (q) =>\n *     q.from({ order: ordersCollection })\n *      .orderBy(({ order }) => desc(order.createdAt))\n *      .limit(100),\n * })\n * ```\n */\nexport function queryOnce<TContext extends Context>(\n  config: QueryOnceConfig<TContext>,\n): Promise<InferResultType<TContext>>\n\n// Implementation\nexport async function queryOnce<TContext extends Context>(\n  configOrQuery:\n    | QueryOnceConfig<TContext>\n    | ((q: InitialQueryBuilder) => QueryBuilder<TContext>),\n): Promise<InferResultType<TContext>> {\n  // Normalize input\n  const config: QueryOnceConfig<TContext> =\n    typeof configOrQuery === `function`\n      ? { query: configOrQuery }\n      : configOrQuery\n\n  const query = (q: InitialQueryBuilder) => {\n    const queryConfig = config.query\n    return typeof queryConfig === `function` ? queryConfig(q) : queryConfig\n  }\n\n  // Create collection with minimal GC time; preload handles sync start\n  const collection = createLiveQueryCollection({\n    query,\n    gcTime: 1, // Cleanup in next tick when no subscribers (0 disables GC)\n  })\n\n  try {\n    // Wait for initial data load\n    await collection.preload()\n\n    // Check if this is a single-result query (findOne was called)\n    const isSingleResult =\n      (collection.config as { singleResult?: boolean }).singleResult === true\n\n    // Extract and return results\n    if (isSingleResult) {\n      const first = collection.values().next().value as\n        | InferResultType<TContext>\n        | undefined\n      return first as InferResultType<TContext>\n    }\n    return collection.toArray as InferResultType<TContext>\n  } finally {\n    // Always cleanup, even on error\n    await collection.cleanup()\n  }\n}\n"],"names":["createLiveQueryCollection"],"mappings":";;;AAwEA,eAAsB,UACpB,eAGoC;AAEpC,QAAM,SACJ,OAAO,kBAAkB,aACrB,EAAE,OAAO,kBACT;AAEN,QAAM,QAAQ,CAAC,MAA2B;AACxC,UAAM,cAAc,OAAO;AAC3B,WAAO,OAAO,gBAAgB,aAAa,YAAY,CAAC,IAAI;AAAA,EAC9D;AAGA,QAAM,aAAaA,oBAAAA,0BAA0B;AAAA,IAC3C;AAAA,IACA,QAAQ;AAAA;AAAA,EAAA,CACT;AAED,MAAI;AAEF,UAAM,WAAW,QAAA;AAGjB,UAAM,iBACH,WAAW,OAAsC,iBAAiB;AAGrE,QAAI,gBAAgB;AAClB,YAAM,QAAQ,WAAW,OAAA,EAAS,OAAO;AAGzC,aAAO;AAAA,IACT;AACA,WAAO,WAAW;AAAA,EACpB,UAAA;AAEE,UAAM,WAAW,QAAA;AAAA,EACnB;AACF;;"}