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@tanstack/db

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A reactive client store for building super fast apps on sync

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{"version":3,"file":"query-builder.cjs","sources":["../../../src/query/query-builder.ts"],"sourcesContent":["import type { Collection } from \"../collection\"\nimport type {\n Comparator,\n ComparatorValue,\n Condition,\n From,\n JoinClause,\n Limit,\n LiteralValue,\n Offset,\n OrderBy,\n Query,\n Select,\n WhereCallback,\n WithQuery,\n} from \"./schema.js\"\nimport type {\n Context,\n Flatten,\n InferResultTypeFromSelectTuple,\n Input,\n InputReference,\n PropertyReference,\n PropertyReferenceString,\n RemoveIndexSignature,\n Schema,\n} from \"./types.js\"\n\ntype CollectionRef = { [K: string]: Collection<any> }\n\nexport class BaseQueryBuilder<TContext extends Context<Schema>> {\n private readonly query: Partial<Query<TContext>> = {}\n\n /**\n * Create a new QueryBuilder instance.\n */\n constructor(query: Partial<Query<TContext>> = {}) {\n this.query = query\n }\n\n from<TCollectionRef extends CollectionRef>(\n collectionRef: TCollectionRef\n ): QueryBuilder<{\n baseSchema: Flatten<\n TContext[`baseSchema`] & {\n [K in keyof TCollectionRef & string]: RemoveIndexSignature<\n (TCollectionRef[keyof TCollectionRef] extends Collection<infer T>\n ? T\n : never) &\n Input\n >\n }\n >\n schema: Flatten<{\n [K in keyof TCollectionRef & string]: RemoveIndexSignature<\n (TCollectionRef[keyof TCollectionRef] extends Collection<infer T>\n ? T\n : never) &\n Input\n >\n }>\n default: keyof TCollectionRef & string\n }>\n\n from<\n T extends InputReference<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`baseSchema`]\n }>,\n >(\n collection: T\n ): QueryBuilder<{\n baseSchema: TContext[`baseSchema`]\n schema: {\n [K in T]: RemoveIndexSignature<TContext[`baseSchema`][T]>\n }\n default: T\n }>\n\n from<\n T extends InputReference<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`baseSchema`]\n }>,\n TAs extends string,\n >(\n collection: T,\n as: TAs\n ): QueryBuilder<{\n baseSchema: TContext[`baseSchema`]\n schema: {\n [K in TAs]: RemoveIndexSignature<TContext[`baseSchema`][T]>\n }\n default: TAs\n }>\n\n /**\n * Specify the collection to query from.\n * This is the first method that must be called in the chain.\n *\n * @param collection The collection name to query from\n * @param as Optional alias for the collection\n * @returns A new QueryBuilder with the from clause set\n */\n from<\n T extends\n | InputReference<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`baseSchema`]\n }>\n | CollectionRef,\n TAs extends string | undefined,\n >(collection: T, as?: TAs) {\n // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition\n if (typeof collection === `object` && collection !== null) {\n return this.fromCollectionRef(collection)\n } else if (typeof collection === `string`) {\n return this.fromInputReference(\n collection as InputReference<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`baseSchema`]\n }>,\n as\n )\n } else {\n throw new Error(`Invalid collection type`)\n }\n }\n\n private fromCollectionRef<TCollectionRef extends CollectionRef>(\n collectionRef: TCollectionRef\n ) {\n const keys = Object.keys(collectionRef)\n if (keys.length !== 1) {\n throw new Error(`Expected exactly one key`)\n }\n\n const key = keys[0]!\n const collection = collectionRef[key]!\n\n const newBuilder = new BaseQueryBuilder()\n Object.assign(newBuilder.query, this.query)\n newBuilder.query.from = key as From<TContext>\n newBuilder.query.collections ??= {}\n newBuilder.query.collections[key] = collection\n\n return newBuilder as unknown as QueryBuilder<{\n baseSchema: TContext[`baseSchema`] & {\n [K in keyof TCollectionRef &\n string]: (TCollectionRef[keyof TCollectionRef] extends Collection<\n infer T\n >\n ? T\n : never) &\n Input\n }\n schema: {\n [K in keyof TCollectionRef &\n string]: (TCollectionRef[keyof TCollectionRef] extends Collection<\n infer T\n >\n ? T\n : never) &\n Input\n }\n default: keyof TCollectionRef & string\n }>\n }\n\n private fromInputReference<\n T extends InputReference<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`baseSchema`]\n }>,\n TAs extends string | undefined,\n >(collection: T, as?: TAs) {\n const newBuilder = new BaseQueryBuilder()\n Object.assign(newBuilder.query, this.query)\n newBuilder.query.from = collection as From<TContext>\n if (as) {\n newBuilder.query.as = as\n }\n\n // Calculate the result type without deep nesting\n type ResultSchema = TAs extends undefined\n ? { [K in T]: TContext[`baseSchema`][T] }\n : { [K in string & TAs]: TContext[`baseSchema`][T] }\n\n type ResultDefault = TAs extends undefined ? T : string & TAs\n\n // Use simpler type assertion to avoid excessive depth\n return newBuilder as unknown as QueryBuilder<{\n baseSchema: TContext[`baseSchema`]\n schema: ResultSchema\n default: ResultDefault\n }>\n }\n\n /**\n * Specify what columns to select.\n * Overwrites any previous select clause.\n * Also supports callback functions that receive the row context and return selected data.\n *\n * @param selects The columns to select (can include callbacks)\n * @returns A new QueryBuilder with the select clause set\n */\n select<TSelects extends Array<Select<TContext>>>(\n this: QueryBuilder<TContext>,\n ...selects: TSelects\n ) {\n // Validate function calls in the selects\n // Need to use a type assertion to bypass deep recursive type checking\n const validatedSelects = selects.map((select) => {\n // If the select is an object with aliases, validate each value\n if (\n typeof select === `object` &&\n // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition\n select !== null &&\n !Array.isArray(select)\n ) {\n const result: Record<string, any> = {}\n\n for (const [key, value] of Object.entries(select)) {\n // If it's a function call (object with a single key that is an allowed function name)\n if (\n typeof value === `object` &&\n value !== null &&\n !Array.isArray(value)\n ) {\n const keys = Object.keys(value)\n if (keys.length === 1) {\n const funcName = keys[0]!\n // List of allowed function names from AllowedFunctionName\n const allowedFunctions = [\n `SUM`,\n `COUNT`,\n `AVG`,\n `MIN`,\n `MAX`,\n `DATE`,\n `JSON_EXTRACT`,\n `JSON_EXTRACT_PATH`,\n `UPPER`,\n `LOWER`,\n `COALESCE`,\n `CONCAT`,\n `LENGTH`,\n `ORDER_INDEX`,\n ]\n\n if (!allowedFunctions.includes(funcName)) {\n console.warn(\n `Unsupported function: ${funcName}. Expected one of: ${allowedFunctions.join(`, `)}`\n )\n }\n }\n }\n\n result[key] = value\n }\n\n return result\n }\n\n return select\n })\n\n // Ensure we have an orderByIndex in the select if we have an orderBy\n // This is required if select is called after orderBy\n if (this._query.orderBy) {\n validatedSelects.push({ _orderByIndex: { ORDER_INDEX: `numeric` } })\n }\n\n const newBuilder = new BaseQueryBuilder<TContext>(\n (this as BaseQueryBuilder<TContext>).query\n )\n newBuilder.query.select = validatedSelects as Array<Select<TContext>>\n\n return newBuilder as QueryBuilder<\n Flatten<\n Omit<TContext, `result`> & {\n result: InferResultTypeFromSelectTuple<TContext, TSelects>\n }\n >\n >\n }\n\n /**\n * Add a where clause comparing two values.\n */\n where<T extends Comparator>(\n left: PropertyReferenceString<TContext> | LiteralValue,\n operator: T,\n right: ComparatorValue<T, TContext>\n ): QueryBuilder<TContext>\n\n /**\n * Add a where clause with a complete condition object.\n */\n where(condition: Condition<TContext>): QueryBuilder<TContext>\n\n /**\n * Add a where clause with a callback function.\n */\n where(callback: WhereCallback<TContext>): QueryBuilder<TContext>\n\n /**\n * Add a where clause to filter the results.\n * Can be called multiple times to add AND conditions.\n * Also supports callback functions that receive the row context.\n *\n * @param leftOrConditionOrCallback The left operand, complete condition, or callback function\n * @param operator Optional comparison operator\n * @param right Optional right operand\n * @returns A new QueryBuilder with the where clause added\n */\n where(\n leftOrConditionOrCallback: any,\n operator?: any,\n right?: any\n ): QueryBuilder<TContext> {\n // Create a new builder with a copy of the current query\n // Use simplistic approach to avoid deep type errors\n const newBuilder = new BaseQueryBuilder<TContext>()\n Object.assign(newBuilder.query, this.query)\n\n let condition: any\n\n // Determine if this is a callback, complete condition, or individual parts\n if (typeof leftOrConditionOrCallback === `function`) {\n // It's a callback function\n condition = leftOrConditionOrCallback\n } else if (operator !== undefined && right !== undefined) {\n // Create a condition from parts\n condition = [leftOrConditionOrCallback, operator, right]\n } else {\n // Use the provided condition directly\n condition = leftOrConditionOrCallback\n }\n\n // Where is always an array, so initialize or append\n if (!newBuilder.query.where) {\n newBuilder.query.where = [condition]\n } else {\n newBuilder.query.where = [...newBuilder.query.where, condition]\n }\n\n return newBuilder as unknown as QueryBuilder<TContext>\n }\n\n /**\n * Add a having clause comparing two values.\n * For filtering results after they have been grouped.\n */\n having(\n left: PropertyReferenceString<TContext> | LiteralValue,\n operator: Comparator,\n right: PropertyReferenceString<TContext> | LiteralValue\n ): QueryBuilder<TContext>\n\n /**\n * Add a having clause with a complete condition object.\n * For filtering results after they have been grouped.\n */\n having(condition: Condition<TContext>): QueryBuilder<TContext>\n\n /**\n * Add a having clause with a callback function.\n * For filtering results after they have been grouped.\n */\n having(callback: WhereCallback<TContext>): QueryBuilder<TContext>\n\n /**\n * Add a having clause to filter the grouped results.\n * Can be called multiple times to add AND conditions.\n * Also supports callback functions that receive the row context.\n *\n * @param leftOrConditionOrCallback The left operand, complete condition, or callback function\n * @param operator Optional comparison operator\n * @param right Optional right operand\n * @returns A new QueryBuilder with the having clause added\n */\n having(\n leftOrConditionOrCallback: any,\n operator?: any,\n right?: any\n ): QueryBuilder<TContext> {\n // Create a new builder with a copy of the current query\n const newBuilder = new BaseQueryBuilder<TContext>()\n Object.assign(newBuilder.query, this.query)\n\n let condition: any\n\n // Determine if this is a callback, complete condition, or individual parts\n if (typeof leftOrConditionOrCallback === `function`) {\n // It's a callback function\n condition = leftOrConditionOrCallback\n } else if (operator !== undefined && right !== undefined) {\n // Create a condition from parts\n condition = [leftOrConditionOrCallback, operator, right]\n } else {\n // Use the provided condition directly\n condition = leftOrConditionOrCallback\n }\n\n // Having is always an array, so initialize or append\n if (!newBuilder.query.having) {\n newBuilder.query.having = [condition]\n } else {\n newBuilder.query.having = [...newBuilder.query.having, condition]\n }\n\n return newBuilder as QueryBuilder<TContext>\n }\n\n /**\n * Add a join clause to the query using a CollectionRef.\n */\n join<TCollectionRef extends CollectionRef>(joinClause: {\n type: `inner` | `left` | `right` | `full` | `cross`\n from: TCollectionRef\n on: Condition<\n Flatten<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`schema`] & {\n [K in keyof TCollectionRef & string]: RemoveIndexSignature<\n (TCollectionRef[keyof TCollectionRef] extends Collection<infer T>\n ? T\n : never) &\n Input\n >\n }\n }>\n >\n where?: Condition<\n Flatten<{\n baseSchema: TContext[`baseSchema`]\n schema: {\n [K in keyof TCollectionRef & string]: RemoveIndexSignature<\n (TCollectionRef[keyof TCollectionRef] extends Collection<infer T>\n ? T\n : never) &\n Input\n >\n }\n }>\n >\n }): QueryBuilder<\n Flatten<\n Omit<TContext, `schema`> & {\n schema: TContext[`schema`] & {\n [K in keyof TCollectionRef & string]: RemoveIndexSignature<\n (TCollectionRef[keyof TCollectionRef] extends Collection<infer T>\n ? T\n : never) &\n Input\n >\n }\n hasJoin: true\n }\n >\n >\n\n /**\n * Add a join clause to the query without specifying an alias.\n * The collection name will be used as the default alias.\n */\n join<\n T extends InputReference<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`baseSchema`]\n }>,\n >(joinClause: {\n type: `inner` | `left` | `right` | `full` | `cross`\n from: T\n on: Condition<\n Flatten<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`schema`] & {\n [K in T]: RemoveIndexSignature<TContext[`baseSchema`][T]>\n }\n }>\n >\n where?: Condition<\n Flatten<{\n baseSchema: TContext[`baseSchema`]\n schema: { [K in T]: RemoveIndexSignature<TContext[`baseSchema`][T]> }\n }>\n >\n }): QueryBuilder<\n Flatten<\n Omit<TContext, `schema`> & {\n schema: TContext[`schema`] & {\n [K in T]: RemoveIndexSignature<TContext[`baseSchema`][T]>\n }\n hasJoin: true\n }\n >\n >\n\n /**\n * Add a join clause to the query with a specified alias.\n */\n join<\n TFrom extends InputReference<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`baseSchema`]\n }>,\n TAs extends string,\n >(joinClause: {\n type: `inner` | `left` | `right` | `full` | `cross`\n from: TFrom\n as: TAs\n on: Condition<\n Flatten<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`schema`] & {\n [K in TAs]: RemoveIndexSignature<TContext[`baseSchema`][TFrom]>\n }\n }>\n >\n where?: Condition<\n Flatten<{\n baseSchema: TContext[`baseSchema`]\n schema: {\n [K in TAs]: RemoveIndexSignature<TContext[`baseSchema`][TFrom]>\n }\n }>\n >\n }): QueryBuilder<\n Flatten<\n Omit<TContext, `schema`> & {\n schema: TContext[`schema`] & {\n [K in TAs]: RemoveIndexSignature<TContext[`baseSchema`][TFrom]>\n }\n hasJoin: true\n }\n >\n >\n\n join<\n TFrom extends\n | InputReference<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`baseSchema`]\n }>\n | CollectionRef,\n TAs extends string | undefined = undefined,\n >(joinClause: {\n type: `inner` | `left` | `right` | `full` | `cross`\n from: TFrom\n as?: TAs\n on: Condition<\n Flatten<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`schema`] &\n (TFrom extends CollectionRef\n ? {\n [K in keyof TFrom & string]: RemoveIndexSignature<\n (TFrom[keyof TFrom] extends Collection<infer T> ? T : never) &\n Input\n >\n }\n : TFrom extends InputReference<infer TRef>\n ? {\n [K in keyof TRef & string]: RemoveIndexSignature<\n TRef[keyof TRef]\n >\n }\n : never)\n }>\n >\n where?: Condition<\n Flatten<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`schema`] &\n (TFrom extends CollectionRef\n ? {\n [K in keyof TFrom & string]: RemoveIndexSignature<\n (TFrom[keyof TFrom] extends Collection<infer T> ? T : never) &\n Input\n >\n }\n : TFrom extends InputReference<infer TRef>\n ? {\n [K in keyof TRef & string]: RemoveIndexSignature<\n TRef[keyof TRef]\n >\n }\n : never)\n }>\n >\n }): QueryBuilder<any> {\n // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition\n if (typeof joinClause.from === `object` && joinClause.from !== null) {\n return this.joinCollectionRef(\n joinClause as {\n type: `inner` | `left` | `right` | `full` | `cross`\n from: CollectionRef\n on: Condition<any>\n where?: Condition<any>\n }\n )\n } else {\n return this.joinInputReference(\n joinClause as {\n type: `inner` | `left` | `right` | `full` | `cross`\n from: InputReference<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`baseSchema`]\n }>\n as?: TAs\n on: Condition<any>\n where?: Condition<any>\n }\n )\n }\n }\n\n private joinCollectionRef<TCollectionRef extends CollectionRef>(joinClause: {\n type: `inner` | `left` | `right` | `full` | `cross`\n from: TCollectionRef\n on: Condition<any>\n where?: Condition<any>\n }): QueryBuilder<any> {\n // Create a new builder with a copy of the current query\n const newBuilder = new BaseQueryBuilder<TContext>()\n Object.assign(newBuilder.query, this.query)\n\n // Get the collection key\n const keys = Object.keys(joinClause.from)\n if (keys.length !== 1) {\n throw new Error(`Expected exactly one key in CollectionRef`)\n }\n const key = keys[0]!\n const collection = joinClause.from[key]\n if (!collection) {\n throw new Error(`Collection not found for key: ${key}`)\n }\n\n // Create a copy of the join clause for the query\n const joinClauseCopy = {\n type: joinClause.type,\n from: key,\n on: joinClause.on,\n where: joinClause.where,\n } as JoinClause<TContext>\n\n // Add the join clause to the query\n if (!newBuilder.query.join) {\n newBuilder.query.join = [joinClauseCopy]\n } else {\n newBuilder.query.join = [...newBuilder.query.join, joinClauseCopy]\n }\n\n // Add the collection to the collections map\n newBuilder.query.collections ??= {}\n newBuilder.query.collections[key] = collection\n\n // Return the new builder with updated schema type\n return newBuilder as QueryBuilder<\n Flatten<\n Omit<TContext, `schema`> & {\n schema: TContext[`schema`] & {\n [K in keyof TCollectionRef & string]: RemoveIndexSignature<\n (TCollectionRef[keyof TCollectionRef] extends Collection<infer T>\n ? T\n : never) &\n Input\n >\n }\n }\n >\n >\n }\n\n private joinInputReference<\n TFrom extends InputReference<{\n baseSchema: TContext[`baseSchema`]\n schema: TContext[`baseSchema`]\n }>,\n TAs extends string | undefined = undefined,\n >(joinClause: {\n type: `inner` | `left` | `right` | `full` | `cross`\n from: TFrom\n as?: TAs\n on: Condition<any>\n where?: Condition<any>\n }): QueryBuilder<any> {\n // Create a new builder with a copy of the current query\n const newBuilder = new BaseQueryBuilder<TContext>()\n Object.assign(newBuilder.query, this.query)\n\n // Create a copy of the join clause for the query\n const joinClauseCopy = { ...joinClause } as JoinClause<TContext>\n\n // Add the join clause to the query\n if (!newBuilder.query.join) {\n newBuilder.query.join = [joinClauseCopy]\n } else {\n newBuilder.query.join = [...newBuilder.query.join, joinClauseCopy]\n }\n\n // Determine the alias or use the collection name as default\n const _effectiveAlias = joinClause.as ?? joinClause.from\n\n // Return the new builder with updated schema type\n return newBuilder as QueryBuilder<\n Flatten<\n Omit<TContext, `schema`> & {\n schema: TContext[`schema`] & {\n [K in typeof _effectiveAlias]: TContext[`baseSchema`][TFrom]\n }\n }\n >\n >\n }\n\n /**\n * Add an orderBy clause to sort the results.\n * Overwrites any previous orderBy clause.\n *\n * @param orderBy The order specification\n * @returns A new QueryBuilder with the orderBy clause set\n */\n orderBy(orderBy: OrderBy<TContext>): QueryBuilder<TContext> {\n // Create a new builder with a copy of the current query\n const newBuilder = new BaseQueryBuilder<TContext>()\n Object.assign(newBuilder.query, this.query)\n\n // Set the orderBy clause\n newBuilder.query.orderBy = orderBy\n\n // Ensure we have an orderByIndex in the select if we have an orderBy\n // This is required if select is called before orderBy\n newBuilder.query.select = [\n ...(newBuilder.query.select ?? []),\n { _orderByIndex: { ORDER_INDEX: `numeric` } },\n ]\n\n return newBuilder as QueryBuilder<TContext>\n }\n\n /**\n * Set a limit on the number of results returned.\n *\n * @param limit Maximum number of results to return\n * @returns A new QueryBuilder with the limit set\n */\n limit(limit: Limit<TContext>): QueryBuilder<TContext> {\n // Create a new builder with a copy of the current query\n const newBuilder = new BaseQueryBuilder<TContext>()\n Object.assign(newBuilder.query, this.query)\n\n // Set the limit\n newBuilder.query.limit = limit\n\n return newBuilder as QueryBuilder<TContext>\n }\n\n /**\n * Set an offset to skip a number of results.\n *\n * @param offset Number of results to skip\n * @returns A new QueryBuilder with the offset set\n */\n offset(offset: Offset<TContext>): QueryBuilder<TContext> {\n // Create a new builder with a copy of the current query\n const newBuilder = new BaseQueryBuilder<TContext>()\n Object.assign(newBuilder.query, this.query)\n\n // Set the offset\n newBuilder.query.offset = offset\n\n return newBuilder as QueryBuilder<TContext>\n }\n\n /**\n * Add a groupBy clause to group the results by one or more columns.\n *\n * @param groupBy The column(s) to group by\n * @returns A new QueryBuilder with the groupBy clause set\n */\n groupBy(\n groupBy: PropertyReference<TContext> | Array<PropertyReference<TContext>>\n ): QueryBuilder<TContext> {\n // Create a new builder with a copy of the current query\n const newBuilder = new BaseQueryBuilder<TContext>()\n Object.assign(newBuilder.query, this.query)\n\n // Set the groupBy clause\n newBuilder.query.groupBy = groupBy\n\n return newBuilder as QueryBuilder<TContext>\n }\n\n /**\n * Define a Common Table Expression (CTE) that can be referenced in the main query.\n * This allows referencing the CTE by name in subsequent from/join clauses.\n *\n * @param name The name of the CTE\n * @param queryBuilderCallback A function that builds the CTE query\n * @returns A new QueryBuilder with the CTE added\n */\n with<TName extends string, TResult = Record<string, unknown>>(\n name: TName,\n queryBuilderCallback: (\n builder: InitialQueryBuilder<{\n baseSchema: TContext[`baseSchema`]\n schema: {}\n }>\n ) => QueryBuilder<any>\n ): InitialQueryBuilder<{\n baseSchema: TContext[`baseSchema`] & { [K in TName]: TResult }\n schema: TContext[`schema`]\n }> {\n // Create a new builder with a copy of the current query\n const newBuilder = new BaseQueryBuilder<TContext>()\n Object.assign(newBuilder.query, this.query)\n\n // Create a new builder for the CTE\n const cteBuilder = new BaseQueryBuilder<{\n baseSchema: TContext[`baseSchema`]\n schema: {}\n }>()\n\n // Get the CTE query from the callback\n const cteQueryBuilder = queryBuilderCallback(\n cteBuilder as InitialQueryBuilder<{\n baseSchema: TContext[`baseSchema`]\n schema: {}\n }>\n )\n\n // Get the query from the builder\n const cteQuery = cteQueryBuilder._query\n\n // Add an 'as' property to the CTE\n const withQuery: WithQuery<any> = {\n ...cteQuery,\n as: name,\n }\n\n // Add the CTE to the with array\n if (!newBuilder.query.with) {\n newBuilder.query.with = [withQuery]\n } else {\n newBuilder.query.with = [...newBuilder.query.with, withQuery]\n }\n\n // Use a type cast that simplifies the type structure to avoid recursion\n return newBuilder as unknown as InitialQueryBuilder<{\n baseSchema: TContext[`baseSchema`] & { [K in TName]: TResult }\n schema: TContext[`schema`]\n }>\n }\n\n get _query(): Query<TContext> {\n return this.query as Query<TContext>\n }\n}\n\nexport type InitialQueryBuilder<TContext extends Context<Schema>> = Pick<\n BaseQueryBuilder<TContext>,\n `from` | `with`\n>\n\nexport type QueryBuilder<TContext extends Context<Schema>> = Omit<\n BaseQueryBuilder<TContext>,\n `from`\n>\n\n/**\n * Create a new query builder with the given schema\n */\nexport function queryBuilder<TBaseSchema extends Schema = {}>() {\n return new BaseQueryBuilder<{\n baseSchema: TBaseSchema\n schema: {}\n }>() as InitialQueryBuilder<{\n baseSchema: TBaseSchema\n schema: {}\n }>\n}\n\nexport type ResultsFromContext<TContext extends Context<Schema>> = Flatten<\n TContext[`result`] extends object\n ? TContext[`result`] // If there is a select we will have a result type\n : TContext[`hasJoin`] extends true\n ? TContext[`schema`] // If there is a join, the query returns the namespaced schema\n : TContext[`default`] extends keyof TContext[`schema`]\n ? TContext[`schema`][TContext[`default`]] // If there is no join we return the flat default schema\n : never // Should never happen\n>\n\nexport type ResultFromQueryBuilder<TQueryBuilder> = Flatten<\n TQueryBuilder extends QueryBuilder<infer C>\n ? C extends { result: infer R }\n ? R\n : never\n : 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