@langchain/core/dist/chat_history.cjs.map

Core LangChain.js abstractions and schemas

{"version":3,"file":"chat_history.cjs","names":["Serializable","messages: BaseMessage[]","message: string","HumanMessage","AIMessage","messages?: BaseMessage[]","message: BaseMessage"],"sources":["../src/chat_history.ts"],"sourcesContent":["import { Serializable } from \"./load/serializable.js\";\nimport { type BaseMessage, HumanMessage, AIMessage } from \"./messages/index.js\";\n\n// TODO: Combine into one class for 0.2\n\n/**\n * Base class for all chat message histories. All chat message histories\n * should extend this class.\n */\nexport abstract class BaseChatMessageHistory extends Serializable {\n  public abstract getMessages(): Promise<BaseMessage[]>;\n\n  public abstract addMessage(message: BaseMessage): Promise<void>;\n\n  public abstract addUserMessage(message: string): Promise<void>;\n\n  public abstract addAIMessage(message: string): Promise<void>;\n\n  /**\n   * Add a list of messages.\n   *\n   * Implementations should override this method to handle bulk addition of messages\n   * in an efficient manner to avoid unnecessary round-trips to the underlying store.\n   *\n   * @param messages - A list of BaseMessage objects to store.\n   */\n  public async addMessages(messages: BaseMessage[]): Promise<void> {\n    for (const message of messages) {\n      await this.addMessage(message);\n    }\n  }\n\n  public abstract clear(): Promise<void>;\n}\n\n/**\n * Base class for all list chat message histories. All list chat message\n * histories should extend this class.\n */\nexport abstract class BaseListChatMessageHistory extends Serializable {\n  /** Returns a list of messages stored in the store. */\n  public abstract getMessages(): Promise<BaseMessage[]>;\n\n  /**\n   * Add a message object to the store.\n   */\n  public abstract addMessage(message: BaseMessage): Promise<void>;\n\n  /**\n   * This is a convenience method for adding a human message string to the store.\n   * Please note that this is a convenience method. Code should favor the\n   * bulk addMessages interface instead to save on round-trips to the underlying\n   * persistence layer.\n   * This method may be deprecated in a future release.\n   */\n  public addUserMessage(message: string): Promise<void> {\n    return this.addMessage(new HumanMessage(message));\n  }\n\n  /**\n   * This is a convenience method for adding an AI message string to the store.\n   * Please note that this is a convenience method. Code should favor the bulk\n   * addMessages interface instead to save on round-trips to the underlying\n   * persistence layer.\n   * This method may be deprecated in a future release.\n   */\n  public addAIMessage(message: string): Promise<void> {\n    return this.addMessage(new AIMessage(message));\n  }\n\n  /**\n   * Add a list of messages.\n   *\n   * Implementations should override this method to handle bulk addition of messages\n   * in an efficient manner to avoid unnecessary round-trips to the underlying store.\n   *\n   * @param messages - A list of BaseMessage objects to store.\n   */\n  public async addMessages(messages: BaseMessage[]): Promise<void> {\n    for (const message of messages) {\n      await this.addMessage(message);\n    }\n  }\n\n  /**\n   * Remove all messages from the store.\n   */\n  public clear(): Promise<void> {\n    throw new Error(\"Not implemented.\");\n  }\n}\n\n/**\n * Class for storing chat message history in-memory. It extends the\n * BaseListChatMessageHistory class and provides methods to get, add, and\n * clear messages.\n */\nexport class InMemoryChatMessageHistory extends BaseListChatMessageHistory {\n  lc_namespace = [\"langchain\", \"stores\", \"message\", \"in_memory\"];\n\n  private messages: BaseMessage[] = [];\n\n  constructor(messages?: BaseMessage[]) {\n    super(...arguments);\n    this.messages = messages ?? [];\n  }\n\n  /**\n   * Method to get all the messages stored in the ChatMessageHistory\n   * instance.\n   * @returns Array of stored BaseMessage instances.\n   */\n  async getMessages(): Promise<BaseMessage[]> {\n    return this.messages;\n  }\n\n  /**\n   * Method to add a new message to the ChatMessageHistory instance.\n   * @param message The BaseMessage instance to add.\n   * @returns A promise that resolves when the message has been added.\n   */\n  async addMessage(message: BaseMessage) {\n    this.messages.push(message);\n  }\n\n  /**\n   * Method to clear all the messages from the ChatMessageHistory instance.\n   * @returns A promise that resolves when all messages have been cleared.\n   */\n  async clear() {\n    this.messages = [];\n  }\n}\n"],"mappings":";;;;;;;;;;;;;;;;;AASA,IAAsB,yBAAtB,cAAqDA,uCAAa;;;;;;;;;CAiBhE,MAAa,YAAYC,UAAwC;AAC/D,OAAK,MAAM,WAAW,UACpB,MAAM,KAAK,WAAW,QAAQ;CAEjC;AAGF;;;;;AAMD,IAAsB,6BAAtB,cAAyDD,uCAAa;;;;;;;;CAgBpE,AAAO,eAAeE,SAAgC;AACpD,SAAO,KAAK,WAAW,IAAIC,2BAAa,SAAS;CAClD;;;;;;;;CASD,AAAO,aAAaD,SAAgC;AAClD,SAAO,KAAK,WAAW,IAAIE,qBAAU,SAAS;CAC/C;;;;;;;;;CAUD,MAAa,YAAYH,UAAwC;AAC/D,OAAK,MAAM,WAAW,UACpB,MAAM,KAAK,WAAW,QAAQ;CAEjC;;;;CAKD,AAAO,QAAuB;AAC5B,QAAM,IAAI,MAAM;CACjB;AACF;;;;;;AAOD,IAAa,6BAAb,cAAgD,2BAA2B;CACzE,eAAe;EAAC;EAAa;EAAU;EAAW;CAAY;CAE9D,AAAQ,WAA0B,CAAE;CAEpC,YAAYI,UAA0B;EACpC,MAAM,GAAG,UAAU;EACnB,KAAK,WAAW,YAAY,CAAE;CAC/B;;;;;;CAOD,MAAM,cAAsC;AAC1C,SAAO,KAAK;CACb;;;;;;CAOD,MAAM,WAAWC,SAAsB;EACrC,KAAK,SAAS,KAAK,QAAQ;CAC5B;;;;;CAMD,MAAM,QAAQ;EACZ,KAAK,WAAW,CAAE;CACnB;AACF"}