@langchain/core/dist/messages/chat.d.ts

Core LangChain.js abstractions and schemas

import { $InferMessageContent, MessageStructure, MessageToolSet } from "./message.js";
import { BaseMessage, BaseMessageChunk, BaseMessageFields } from "./base.js";
export interface ChatMessageFields<TStructure extends MessageStructure = MessageStructure> extends BaseMessageFields<TStructure, "generic"> {
  role: string;
}
/**
 * Represents a chat message in a conversation.
 */
export declare class ChatMessage<TStructure extends MessageStructure = MessageStructure> extends BaseMessage<TStructure, "generic"> implements ChatMessageFields<TStructure> {
  static lc_name(): string;
  readonly type: "generic";
  role: string;
  static _chatMessageClass(): typeof ChatMessage;
  constructor(content: $InferMessageContent<TStructure, "generic">, role: string);
  constructor(fields: ChatMessageFields<TStructure>);
  static isInstance(obj: unknown): obj is ChatMessage;
  static [Symbol.hasInstance](obj: unknown): obj is ChatMessage<MessageStructure<MessageToolSet>>;
  get _printableFields(): Record<string, unknown>;
}
/**
 * Represents a chunk of a chat message, which can be concatenated with
 * other chat message chunks.
 */
export declare class ChatMessageChunk<TStructure extends MessageStructure = MessageStructure> extends BaseMessageChunk<TStructure, "generic"> {
  static lc_name(): string;
  readonly type: "generic";
  role: string;
  constructor(content: $InferMessageContent<TStructure, "generic">, role: string);
  constructor(fields: ChatMessageFields<TStructure>);
  concat(chunk: ChatMessageChunk<TStructure>): this;
  static isInstance(obj: unknown): obj is ChatMessageChunk;
  static [Symbol.hasInstance](obj: unknown): obj is ChatMessageChunk<MessageStructure<MessageToolSet>>;
  get _printableFields(): Record<string, unknown>;
}
/**
 * @deprecated Use {@link ChatMessage.isInstance} instead
 */
export declare function isChatMessage(x: BaseMessage): x is ChatMessage;
/**
 * @deprecated Use {@link ChatMessageChunk.isInstance} instead
 */
export declare function isChatMessageChunk(x: BaseMessageChunk): x is ChatMessageChunk;
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