import { Tool } from "@langchain/core/tools"; /** * The Calculator class is a tool used to evaluate mathematical * expressions. It extends the base Tool class. * @example * ```typescript * const calculator = new Calculator(); * const sum = calculator.add(99, 99); * console.log("The sum of 99 and 99 is:", sum); * ``` */ export class Calculator extends Tool { constructor() { super(...arguments); Object.defineProperty(this, "name", { enumerable: true, configurable: true, writable: true, value: "calculator" }); Object.defineProperty(this, "description", { enumerable: true, configurable: true, writable: true, value: `Useful for getting the result of a math expression. The input to this tool should be a valid mathematical expression that could be executed by a simple calculator.` }); } static lc_name() { return "Calculator"; } get lc_namespace() { return [...super.lc_namespace, "calculator"]; } /** @ignore */ async _call(_input) { try { return `42`; } catch (error) { return "I don't know how to do that."; } } }