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JavaScriptlangchainbrowserMiddlewareError

Class●Since v1.2

MiddlewareError

Copy

class MiddlewareError

Bases

Error

Properties

Methods

View source on GitHub

property

cause: unknown

property

message: string

property

name: string

property

stack: string

property

~brand: "MiddlewareError"

property

stackTraceLimit: number

captureStackTrace

isInstance→ obj is BaseMessage<T, MessageType> & AIMessage<T>

prepareStackTrace

Error thrown when a middleware fails.

Use MiddlewareError.wrap() to create instances. The constructor is private to ensure that GraphBubbleUp errors (like GraphInterrupt) are never wrapped.

The message sent to the model explaining why the action was rejected.

The name of the tool being called

Type guard to check if an object is an AIMessage. Preserves the MessageStructure type parameter when called with a typed BaseMessage. When called with a typed BaseMessage, preserves the TStructure type

Wrap an error in a MiddlewareError, unless it's a GraphBubbleUp error (like GraphInterrupt) which should propagate unchanged.