{"ast":null,"code":"import { Serializable } from \"./load/serializable.js\";\nimport { HumanMessage } from \"./messages/human.js\";\nimport { getBufferString } from \"./messages/utils.js\";\n/**\n * Base PromptValue class. All prompt values should extend this class.\n */\nexport class BasePromptValue extends Serializable {}\n/**\n * Represents a prompt value as a string. It extends the BasePromptValue\n * class and overrides the toString and toChatMessages methods.\n */\nexport class StringPromptValue extends BasePromptValue {\n  static lc_name() {\n    return \"StringPromptValue\";\n  }\n  constructor(value) {\n    super({\n      value\n    });\n    Object.defineProperty(this, \"lc_namespace\", {\n      enumerable: true,\n      configurable: true,\n      writable: true,\n      value: [\"langchain_core\", \"prompt_values\"]\n    });\n    Object.defineProperty(this, \"lc_serializable\", {\n      enumerable: true,\n      configurable: true,\n      writable: true,\n      value: true\n    });\n    Object.defineProperty(this, \"value\", {\n      enumerable: true,\n      configurable: true,\n      writable: true,\n      value: void 0\n    });\n    this.value = value;\n  }\n  toString() {\n    return this.value;\n  }\n  toChatMessages() {\n    return [new HumanMessage(this.value)];\n  }\n}\n/**\n * Class that represents a chat prompt value. 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All prompt values should extend this class.\n */\nexport class BasePromptValue extends Serializable {\n}\n/**\n * Represents a prompt value as a string. It extends the BasePromptValue\n * class and overrides the toString and toChatMessages methods.\n */\nexport class StringPromptValue extends BasePromptValue {\n    static lc_name() {\n        return \"StringPromptValue\";\n    }\n    constructor(value) {\n        super({ value });\n        Object.defineProperty(this, \"lc_namespace\", {\n            enumerable: true,\n            configurable: true,\n            writable: true,\n            value: [\"langchain_core\", \"prompt_values\"]\n        });\n        Object.defineProperty(this, \"lc_serializable\", {\n            enumerable: true,\n            configurable: true,\n            writable: true,\n            value: true\n        });\n        Object.defineProperty(this, \"value\", {\n            enumerable: true,\n            configurable: true,\n            writable: true,\n            value: void 0\n        });\n        this.value = value;\n    }\n    toString() {\n        return this.value;\n    }\n    toChatMessages() {\n        return [new HumanMessage(this.value)];\n    }\n}\n/**\n * Class that represents a chat prompt value. 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