@tanstack/db/dist/cjs/query/builder/ref-proxy.cjs.map

A reactive client store for building super fast apps on sync

{"version":3,"file":"ref-proxy.cjs","sources":["../../../../src/query/builder/ref-proxy.ts"],"sourcesContent":["import { PropRef, Value, isBasicOrAggregateExpression } from '../ir.js'\nimport { isRefProxy, registerRefProxy } from './ref-proxy-identity.js'\nimport { getWrapperExpressionName } from './wrapper-identity.js'\nimport type { BasicExpression } from '../ir.js'\nimport type { IsPlainObject, RefLeaf } from './types.js'\nimport type { VirtualRowProps } from '../../virtual-props.js'\n\nexport { isRefProxy } from './ref-proxy-identity.js'\n\nexport interface RefProxy<T = any> {\n  /** @internal */\n  readonly __refProxy: true\n  /** @internal */\n  readonly __path: Array<string>\n  /** @internal */\n  readonly __sourceAlias?: string\n  /** @internal */\n  readonly __type: T\n}\n\n/**\n * Virtual properties available on all row ref proxies.\n * These allow querying on sync status, origin, key, and collection ID.\n */\nexport type VirtualPropsRefProxy<\n  TKey extends string | number = string | number,\n> = {\n  readonly [K in keyof VirtualRowProps<TKey>]: RefLeaf<VirtualRowProps<TKey>[K]>\n}\n\n// Strip nullish members before deciding whether a schema field is traversable,\n// then restore them outside the proxy so the schema still requires a guard.\n// The tuple guard keeps exact null/undefined fields as leaves: `never` would\n// otherwise satisfy the plain-object check.\ntype SingleRowField<V, TKey extends string | number> = [\n  NonNullable<V>,\n] extends [never]\n  ? RefLeaf<V>\n  : IsPlainObject<NonNullable<V>> extends true\n    ?\n        | SingleRowRefProxy<NonNullable<V>, TKey, false>\n        | Extract<V, null | undefined>\n    : RefLeaf<V>\n\n/**\n * Type for creating a RefProxy for a single row/type without namespacing\n * Used in collection indexes and where clauses\n *\n * Inferred row roots include virtual properties ($synced, $origin, $key,\n * $collectionId). The default exported shape is suitable for reusable helpers\n * that can accept either roots or recursively traversed user objects. Use the\n * third parameter as `true` when a helper specifically requires a row root.\n */\nexport type SingleRowRefProxy<\n  T,\n  TKey extends string | number = string | number,\n  IncludeVirtualProps extends boolean = false,\n> =\n  T extends Record<string, any>\n    ? {\n        [K in keyof T]: SingleRowField<T[K], TKey>\n      } & RefProxy<T> &\n        (IncludeVirtualProps extends true ? VirtualPropsRefProxy<TKey> : {})\n    : RefProxy<T> &\n        (IncludeVirtualProps extends true ? VirtualPropsRefProxy<TKey> : {})\n\n/**\n * Creates a proxy object that records property access paths for a single row\n * Used in collection indexes and where clauses\n */\nexport function createSingleRowRefProxy<\n  T extends Record<string, any>,\n  TKey extends string | number = string | number,\n>(): SingleRowRefProxy<T, TKey, true> {\n  const cache = new Map<string, any>()\n\n  function createProxy(path: Array<string>): any {\n    const pathKey = JSON.stringify(path)\n    if (cache.has(pathKey)) {\n      return cache.get(pathKey)\n    }\n\n    const proxy = new Proxy({} as any, {\n      get(target, prop, receiver) {\n        if (prop === `__refProxy`) return true\n        if (prop === `__path`) return path\n        if (prop === `__sourceAlias`) return undefined\n        if (prop === `__type`) return undefined // Type is only for TypeScript inference\n        if (typeof prop === `symbol`) return Reflect.get(target, prop, receiver)\n\n        const newPath = [...path, String(prop)]\n        return createProxy(newPath)\n      },\n\n      has(target, prop) {\n        if (\n          prop === `__refProxy` ||\n          prop === `__path` ||\n          prop === `__sourceAlias` ||\n          prop === `__type`\n        )\n          return true\n        return Reflect.has(target, prop)\n      },\n\n      ownKeys(target) {\n        return Reflect.ownKeys(target)\n      },\n\n      getOwnPropertyDescriptor(target, prop) {\n        if (\n          prop === `__refProxy` ||\n          prop === `__path` ||\n          prop === `__sourceAlias` ||\n          prop === `__type`\n        ) {\n          return { enumerable: false, configurable: true }\n        }\n        return Reflect.getOwnPropertyDescriptor(target, prop)\n      },\n    })\n\n    registerRefProxy(proxy)\n    cache.set(pathKey, proxy)\n    return proxy\n  }\n\n  // Return the root proxy that starts with an empty path\n  return createProxy([]) as SingleRowRefProxy<T, TKey, true>\n}\n\n/**\n * Creates a proxy object that records property access paths\n * Used in callbacks like where, select, etc. to create type-safe references\n */\nexport function createRefProxy<T extends Record<string, any>>(\n  aliases: Array<string>,\n): RefProxy<T> & T {\n  const cache = new Map<string, any>()\n  let accessId = 0 // Monotonic counter to record evaluation order\n\n  function createProxy(path: Array<string>): any {\n    const pathKey = JSON.stringify(path)\n    if (cache.has(pathKey)) {\n      return cache.get(pathKey)\n    }\n\n    const proxy = new Proxy({} as any, {\n      get(target, prop, receiver) {\n        if (prop === `__refProxy`) return true\n        if (prop === `__path`) return path\n        if (prop === `__sourceAlias`) return path[0]\n        if (prop === `__type`) return undefined // Type is only for TypeScript inference\n        if (typeof prop === `symbol`) return Reflect.get(target, prop, receiver)\n\n        const newPath = [...path, String(prop)]\n        return createProxy(newPath)\n      },\n\n      has(target, prop) {\n        if (\n          prop === `__refProxy` ||\n          prop === `__path` ||\n          prop === `__sourceAlias` ||\n          prop === `__type`\n        )\n          return true\n        return Reflect.has(target, prop)\n      },\n\n      ownKeys(target) {\n        const id = ++accessId\n        const sentinelKey = `__SPREAD_SENTINEL__${path.join(`.`)}__${id}`\n        if (!Object.prototype.hasOwnProperty.call(target, sentinelKey)) {\n          Object.defineProperty(target, sentinelKey, {\n            enumerable: true,\n            configurable: true,\n            value: true,\n          })\n        }\n        return Reflect.ownKeys(target)\n      },\n\n      getOwnPropertyDescriptor(target, prop) {\n        if (\n          prop === `__refProxy` ||\n          prop === `__path` ||\n          prop === `__sourceAlias` ||\n          prop === `__type`\n        ) {\n          return { enumerable: false, configurable: true }\n        }\n        return Reflect.getOwnPropertyDescriptor(target, prop)\n      },\n    })\n\n    registerRefProxy(proxy)\n    cache.set(pathKey, proxy)\n    return proxy\n  }\n\n  // Create the root proxy with all aliases as top-level properties\n  const rootProxy = new Proxy({} as any, {\n    get(target, prop, receiver) {\n      if (prop === `__refProxy`) return true\n      if (prop === `__path`) return []\n      if (prop === `__sourceAlias`) return undefined\n      if (prop === `__type`) return undefined // Type is only for TypeScript inference\n      if (typeof prop === `symbol`) return Reflect.get(target, prop, receiver)\n\n      const propStr = String(prop)\n      if (aliases.includes(propStr) || aliases.includes(`*`)) {\n        return createProxy([propStr])\n      }\n\n      return undefined\n    },\n\n    has(target, prop) {\n      if (\n        prop === `__refProxy` ||\n        prop === `__path` ||\n        prop === `__sourceAlias` ||\n        prop === `__type`\n      )\n        return true\n      if (typeof prop === `string` && aliases.includes(prop)) return true\n      return Reflect.has(target, prop)\n    },\n\n    ownKeys(_target) {\n      return [...aliases, `__refProxy`, `__path`, `__sourceAlias`, `__type`]\n    },\n\n    getOwnPropertyDescriptor(target, prop) {\n      if (\n        prop === `__refProxy` ||\n        prop === `__path` ||\n        prop === `__sourceAlias` ||\n        prop === `__type`\n      ) {\n        return { enumerable: false, configurable: true }\n      }\n      if (typeof prop === `string` && aliases.includes(prop)) {\n        return { enumerable: true, configurable: true }\n      }\n      return undefined\n    },\n  })\n\n  registerRefProxy(rootProxy)\n  return rootProxy\n}\n\n/**\n * Creates a ref proxy with $selected namespace for SELECT fields\n *\n * Adds a $selected property that allows accessing SELECT fields via $selected.fieldName syntax.\n * The $selected proxy creates paths like ['$selected', 'fieldName'] which directly reference\n * the $selected property on the namespaced row.\n *\n * @param aliases - Array of table aliases to create proxies for\n * @returns A ref proxy with table aliases and $selected namespace\n */\nexport function createRefProxyWithSelected<T extends Record<string, any>>(\n  aliases: Array<string>,\n): RefProxy<T> &\n  T & { $selected: SingleRowRefProxy<any, string | number, true> } {\n  const baseProxy = createRefProxy(aliases)\n\n  // Create a proxy for $selected that prefixes all paths with '$selected'\n  const cache = new Map<string, any>()\n\n  function createSelectedProxy(path: Array<string>): any {\n    const pathKey = JSON.stringify(path)\n    if (cache.has(pathKey)) {\n      return cache.get(pathKey)\n    }\n\n    const proxy = new Proxy({} as any, {\n      get(target, prop, receiver) {\n        if (prop === `__refProxy`) return true\n        if (prop === `__path`) return [`$selected`, ...path]\n        if (prop === `__sourceAlias`) return `$selected`\n        if (prop === `__type`) return undefined\n        if (typeof prop === `symbol`) return Reflect.get(target, prop, receiver)\n\n        const newPath = [...path, String(prop)]\n        return createSelectedProxy(newPath)\n      },\n\n      has(target, prop) {\n        if (\n          prop === `__refProxy` ||\n          prop === `__path` ||\n          prop === `__sourceAlias` ||\n          prop === `__type`\n        )\n          return true\n        return Reflect.has(target, prop)\n      },\n\n      ownKeys(target) {\n        return Reflect.ownKeys(target)\n      },\n\n      getOwnPropertyDescriptor(target, prop) {\n        if (\n          prop === `__refProxy` ||\n          prop === `__path` ||\n          prop === `__sourceAlias` ||\n          prop === `__type`\n        ) {\n          return { enumerable: false, configurable: true }\n        }\n        return Reflect.getOwnPropertyDescriptor(target, prop)\n      },\n    })\n\n    registerRefProxy(proxy)\n    cache.set(pathKey, proxy)\n    return proxy\n  }\n\n  const wrappedSelectedProxy = createSelectedProxy([])\n\n  // Wrap the base proxy to also handle $selected access\n  const selectedRootProxy = new Proxy(baseProxy, {\n    get(target, prop, receiver) {\n      if (prop === `$selected`) {\n        return wrappedSelectedProxy\n      }\n      return Reflect.get(target, prop, receiver)\n    },\n\n    has(target, prop) {\n      if (prop === `$selected`) return true\n      return Reflect.has(target, prop)\n    },\n\n    ownKeys(target) {\n      return [...Reflect.ownKeys(target), `$selected`]\n    },\n\n    getOwnPropertyDescriptor(target, prop) {\n      if (prop === `$selected`) {\n        return {\n          enumerable: true,\n          configurable: true,\n          value: wrappedSelectedProxy,\n        }\n      }\n      return Reflect.getOwnPropertyDescriptor(target, prop)\n    },\n  }) as RefProxy<T> &\n    T & {\n      $selected: SingleRowRefProxy<any, string | number, true>\n    }\n  registerRefProxy(selectedRootProxy)\n  return selectedRootProxy\n}\n\n/**\n * Converts a value to an Expression.\n * If it's a RefProxy, creates a PropRef. Throws if the value is a\n * ToArrayWrapper, ConcatToArrayWrapper, CaseWhenWrapper, or MaterializeWrapper\n * (these must be used as direct select fields). Otherwise wraps it as a Value.\n */\nexport function toExpression<T = any>(value: T): BasicExpression<T>\nexport function toExpression(value: RefProxy<any>): BasicExpression<any>\nexport function toExpression(value: any): BasicExpression<any> {\n  if (isRefProxy(value)) {\n    return new PropRef(value.__path, value.__sourceAlias)\n  }\n  // toArray(), concat(toArray()), and materialize() must be used as direct\n  // select fields, not inside expressions\n  const name = getWrapperExpressionName(value)\n  if (name) {\n    throw new Error(\n      `${name} cannot be used inside expressions (e.g., coalesce(), eq(), not()). ` +\n        `Use ${name} directly as a select field value instead.`,\n    )\n  }\n  // Only constructed expressions are IR; user values may have the same fields.\n  if (isBasicOrAggregateExpression(value)) {\n    return value as BasicExpression\n  }\n  return new Value(value)\n}\n\n/**\n * Helper to create a Value expression from a literal\n */\nexport function 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