@langchain/langgraph/dist/errors.cjs.map

LangGraph

{"version":3,"file":"errors.cjs","names":[],"sources":["../src/errors.ts"],"sourcesContent":["import { Command, Interrupt } from \"./constants.js\";\n\n// When editing, make sure to update the index found here:\n// https://langchain-ai.github.io/langgraphjs/troubleshooting/errors/\nexport type BaseLangGraphErrorFields = {\n  lc_error_code?:\n    | \"GRAPH_RECURSION_LIMIT\"\n    | \"INVALID_CONCURRENT_GRAPH_UPDATE\"\n    | \"INVALID_GRAPH_NODE_RETURN_VALUE\"\n    | \"MISSING_CHECKPOINTER\"\n    | \"MULTIPLE_SUBGRAPHS\"\n    | \"UNREACHABLE_NODE\";\n};\n\n// TODO: Merge with base LangChain error class when we drop support for core@0.2.0\n/** @category Errors */\nexport class BaseLangGraphError extends Error {\n  lc_error_code?: string;\n\n  constructor(message?: string, fields?: BaseLangGraphErrorFields) {\n    let finalMessage = message ?? \"\";\n    if (fields?.lc_error_code) {\n      finalMessage = `${finalMessage}\\n\\nTroubleshooting URL: https://docs.langchain.com/oss/javascript/langgraph/${fields.lc_error_code}/\\n`;\n    }\n    super(finalMessage);\n    this.lc_error_code = fields?.lc_error_code;\n  }\n}\n\nexport class GraphBubbleUp extends BaseLangGraphError {\n  get is_bubble_up() {\n    return true;\n  }\n}\n\nexport class GraphRecursionError extends BaseLangGraphError {\n  constructor(message?: string, fields?: BaseLangGraphErrorFields) {\n    super(message, fields);\n    this.name = \"GraphRecursionError\";\n  }\n\n  static get unminifiable_name() {\n    return \"GraphRecursionError\";\n  }\n}\n\nexport class GraphValueError extends BaseLangGraphError {\n  constructor(message?: string, fields?: BaseLangGraphErrorFields) {\n    super(message, fields);\n    this.name = \"GraphValueError\";\n  }\n\n  static get unminifiable_name() {\n    return \"GraphValueError\";\n  }\n}\n\n/**\n * Raised when a graph run exits early due to a drain request.\n *\n * This indicates the graph stopped cooperatively at a superstep boundary\n * because {@link RunControl#requestDrain} was called (e.g., in response to\n * SIGTERM). The checkpoint is saved and the run can be resumed later.\n */\nexport class GraphDrained extends GraphBubbleUp {\n  reason: string;\n\n  constructor(reason: string = \"shutdown\", fields?: BaseLangGraphErrorFields) {\n    super(`Graph drained: ${reason}`, fields);\n    this.name = \"GraphDrained\";\n    this.reason = reason;\n  }\n\n  static get unminifiable_name() {\n    return \"GraphDrained\";\n  }\n}\n\nexport function isGraphDrained(e?: unknown): e is GraphDrained {\n  return (\n    e !== undefined && (e as Error).name === GraphDrained.unminifiable_name\n  );\n}\n\nexport class GraphInterrupt extends GraphBubbleUp {\n  interrupts: Interrupt[];\n\n  constructor(interrupts?: Interrupt[], fields?: BaseLangGraphErrorFields) {\n    super(JSON.stringify(interrupts, null, 2), fields);\n    this.name = \"GraphInterrupt\";\n    this.interrupts = interrupts ?? [];\n  }\n\n  static get unminifiable_name() {\n    return \"GraphInterrupt\";\n  }\n}\n\n/** Raised by a node to interrupt execution. */\nexport class NodeInterrupt extends GraphInterrupt {\n  // eslint-disable-next-line @typescript-eslint/no-explicit-any\n  constructor(message: any, fields?: BaseLangGraphErrorFields) {\n    super([{ value: message }], fields);\n    this.name = \"NodeInterrupt\";\n  }\n\n  static get unminifiable_name() {\n    return \"NodeInterrupt\";\n  }\n}\n\n/**\n * Failure context passed to a node-level error handler.\n *\n * A node-level error handler is registered via\n * `StateGraph.addNode(name, fn, { errorHandler })`. The handler runs ONLY after\n * the failing node's {@link RetryPolicy} is exhausted, so retry and handling\n * stay decoupled. The handler receives the failed node's name and the thrown\n * error via a `NodeError` instance, can return a state update, and can route to\n * a recovery branch via `new Command({ goto })` (saga / compensation flows).\n *\n * @example\n * ```ts\n * import { NodeError } from \"@langchain/langgraph\";\n *\n * function handler(state: State, error: NodeError) {\n *   return new Command({\n *     update: { status: `recovered from ${error.node}: ${error.error.message}` },\n *     goto: \"finalize\",\n *   });\n * }\n * ```\n */\nexport class NodeError {\n  /** Name of the node whose execution failed. */\n  node: string;\n\n  /** Error thrown by the failed node. */\n  error: Error;\n\n  constructor(node: string, error: Error) {\n    this.node = node;\n    this.error = error;\n  }\n\n  static get unminifiable_name() {\n    return \"NodeError\";\n  }\n}\n\n/**\n * Type guard that checks whether a value is a {@link NodeError}.\n */\nexport function isNodeError(e?: unknown): e is NodeError {\n  return (\n    e != null &&\n    typeof e === \"object\" &&\n    e.constructor != null &&\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    (e.constructor as any).unminifiable_name === NodeError.unminifiable_name\n  );\n}\n\nexport class ParentCommand extends GraphBubbleUp {\n  command: Command;\n\n  constructor(command: Command) {\n    super();\n    this.name = \"ParentCommand\";\n    this.command = command;\n  }\n\n  static get unminifiable_name() {\n    return \"ParentCommand\";\n  }\n}\n\nexport function isParentCommand(e?: unknown): e is ParentCommand {\n  return (\n    e !== undefined &&\n    (e as ParentCommand).name === ParentCommand.unminifiable_name\n  );\n}\n\nexport function isGraphBubbleUp(e?: unknown): e is GraphBubbleUp {\n  return e !== undefined && (e as GraphBubbleUp).is_bubble_up === true;\n}\n\nexport function isGraphInterrupt(e?: unknown): e is GraphInterrupt {\n  return (\n    e !== undefined &&\n    [\n      GraphInterrupt.unminifiable_name,\n      NodeInterrupt.unminifiable_name,\n    ].includes((e as Error).name)\n  );\n}\n\n/**\n * Raised when a node invocation exceeds one of its configured timeouts.\n *\n * Does **not** extend {@link GraphBubbleUp} (so it flows through the normal node\n * error path) and is intentionally treated as retryable by the default retry\n * policy — its message/name do not match the default `retryOn` blocklist, so a\n * configured {@link RetryPolicy} will retry it (see langchain-ai/langgraph#7659).\n *\n * Both {@link NodeTimeoutError.runTimeout} and {@link NodeTimeoutError.idleTimeout}\n * reflect the configured policy at the time of the failure (each `undefined` if\n * not configured). {@link NodeTimeoutError.kind} and {@link NodeTimeoutError.timeout}\n * identify which one fired.\n *\n * @category Errors\n */\nexport class NodeTimeoutError extends BaseLangGraphError {\n  /** Name of the node/task that timed out. */\n  node: string;\n\n  /** Which timeout fired: a hard `\"run\"` cap or a progress-resetting `\"idle\"` cap. */\n  kind: \"run\" | \"idle\";\n\n  /** The value (ms) of the timeout that fired (`runTimeout` or `idleTimeout`). */\n  timeout: number;\n\n  /** Elapsed time (ms) since the attempt started, at the moment the timeout fired. */\n  elapsed: number;\n\n  /** Configured run timeout (ms), if any. */\n  runTimeout?: number;\n\n  /** Configured idle timeout (ms), if any. */\n  idleTimeout?: number;\n\n  constructor(\n    fields: {\n      node: string;\n      elapsed: number;\n      kind: \"run\" | \"idle\";\n      runTimeout?: number;\n      idleTimeout?: number;\n    },\n    errorFields?: BaseLangGraphErrorFields\n  ) {\n    const { node, elapsed, kind, runTimeout, idleTimeout } = fields;\n    let message: string;\n    let timeout: number;\n    if (kind === \"idle\") {\n      if (idleTimeout === undefined) {\n        throw new Error(\"idleTimeout is required when kind='idle'\");\n      }\n      timeout = idleTimeout;\n      message =\n        `Node \"${node}\" exceeded its idle timeout of ${idleTimeout}ms ` +\n        `without making progress (elapsed: ${elapsed}ms).`;\n    } else {\n      if (runTimeout === undefined) {\n        throw new Error(\"runTimeout is required when kind='run'\");\n      }\n      timeout = runTimeout;\n      message =\n        `Node \"${node}\" exceeded its run timeout of ${runTimeout}ms ` +\n        `(elapsed: ${elapsed}ms).`;\n    }\n    super(message, errorFields);\n    this.name = \"NodeTimeoutError\";\n    this.node = node;\n    this.kind = kind;\n    this.timeout = timeout;\n    this.elapsed = elapsed;\n    this.runTimeout = runTimeout;\n    this.idleTimeout = idleTimeout;\n  }\n\n  static get unminifiable_name() {\n    return \"NodeTimeoutError\";\n  }\n}\n\nexport function isNodeTimeoutError(e?: unknown): e is NodeTimeoutError {\n  return (\n    e !== undefined &&\n    (e as NodeTimeoutError).name === NodeTimeoutError.unminifiable_name\n  );\n}\n\nexport class EmptyInputError extends BaseLangGraphError {\n  constructor(message?: string, fields?: BaseLangGraphErrorFields) {\n    super(message, fields);\n    this.name = \"EmptyInputError\";\n  }\n\n  static get unminifiable_name() {\n    return \"EmptyInputError\";\n  }\n}\n\nexport class EmptyChannelError extends BaseLangGraphError {\n  constructor(message?: string, fields?: BaseLangGraphErrorFields) {\n    // Skip expensive stack trace capture — used for control flow on channel reads.\n    const prevLimit = Error.stackTraceLimit;\n    Error.stackTraceLimit = 0;\n    super(message, fields);\n    Error.stackTraceLimit = prevLimit;\n    this.name = \"EmptyChannelError\";\n  }\n\n  static get unminifiable_name() {\n    return \"EmptyChannelError\";\n  }\n}\n\nexport class InvalidUpdateError extends BaseLangGraphError {\n  constructor(message?: string, fields?: BaseLangGraphErrorFields) {\n    super(message, fields);\n    this.name = \"InvalidUpdateError\";\n  }\n\n  static get unminifiable_name() {\n    return \"InvalidUpdateError\";\n  }\n}\n\n/**\n * @deprecated This exception type is no longer thrown.\n */\nexport class MultipleSubgraphsError extends BaseLangGraphError {\n  constructor(message?: string, fields?: BaseLangGraphErrorFields) {\n    super(message, fields);\n    this.name = \"MultipleSubgraphError\";\n  }\n\n  static get unminifiable_name() {\n    return \"MultipleSubgraphError\";\n  }\n}\n\nexport class UnreachableNodeError extends BaseLangGraphError {\n  constructor(message?: string, fields?: BaseLangGraphErrorFields) {\n    super(message, fields);\n    this.name = \"UnreachableNodeError\";\n  }\n\n  static get unminifiable_name() {\n    return \"UnreachableNodeError\";\n  }\n}\n\n/**\n * Exception raised when an error occurs in the remote graph.\n */\nexport class RemoteException extends BaseLangGraphError {\n  constructor(message?: string, fields?: BaseLangGraphErrorFields) {\n    super(message, fields);\n    this.name = 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A valid input should be a\n * StateDefinition, an Annotation.Root, or a Zod schema.\n *\n * @example\n * // Example of incorrect usage:\n * try {\n *   new StateGraph({ foo: \"bar\" }); // Not a valid input\n * } catch (err) {\n *   if (err instanceof StateGraphInputError) {\n *     console.error(err.message);\n *   }\n * }\n */\nexport class StateGraphInputError extends BaseLangGraphError {\n  /**\n   * Create a new StateGraphInputError.\n   * @param message - Optional custom error message.\n   * @param fields - Optional additional error fields.\n   */\n  constructor(message?: string, fields?: BaseLangGraphErrorFields) {\n    super(message, fields);\n    this.name = \"StateGraphInputError\";\n    this.message =\n      \"Invalid StateGraph input. 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