@langchain/langgraph
Version:
1 lines • 3.78 kB
Source Map (JSON)
{"version":3,"file":"tool_executor.cjs","names":["RunnableBinding","RunnableLambda"],"sources":["../../src/prebuilt/tool_executor.ts"],"sourcesContent":["import {\n RunnableBinding,\n RunnableConfig,\n RunnableLambda,\n RunnableToolLike,\n} from \"@langchain/core/runnables\";\nimport { StructuredToolInterface } from \"@langchain/core/tools\";\n\nconst INVALID_TOOL_MSG_TEMPLATE = `{requestedToolName} is not a valid tool, try one of {availableToolNamesString}.`;\n\n/** @deprecated Use {@link ToolNode} instead. */\nexport interface ToolExecutorArgs {\n tools: Array<StructuredToolInterface | RunnableToolLike>;\n /**\n * @default {INVALID_TOOL_MSG_TEMPLATE}\n */\n invalidToolMsgTemplate?: string;\n}\n\n/**\n * Interface for invoking a tool\n */\nexport interface ToolInvocationInterface {\n tool: string;\n toolInput: string;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\ntype ToolExecutorInputType = any;\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\ntype ToolExecutorOutputType = any;\n\n/** @deprecated Use {@link ToolNode} instead. */\nexport class ToolExecutor extends RunnableBinding<\n ToolExecutorInputType,\n ToolExecutorOutputType\n> {\n lc_graph_name = \"ToolExecutor\";\n\n tools: Array<StructuredToolInterface | RunnableToolLike>;\n\n toolMap: Record<string, StructuredToolInterface | RunnableToolLike>;\n\n invalidToolMsgTemplate: string;\n\n constructor(fields: ToolExecutorArgs) {\n const fieldsWithDefaults = {\n invalidToolMsgTemplate: INVALID_TOOL_MSG_TEMPLATE,\n ...fields,\n };\n const bound = RunnableLambda.from(\n async (input: ToolInvocationInterface, config?: RunnableConfig) =>\n this._execute(input, config)\n );\n super({\n bound,\n config: {},\n });\n this.tools = fieldsWithDefaults.tools;\n this.invalidToolMsgTemplate = fieldsWithDefaults.invalidToolMsgTemplate;\n this.toolMap = this.tools.reduce(\n (acc, tool) => {\n acc[tool.name] = tool;\n return acc;\n },\n {} as Record<string, StructuredToolInterface | RunnableToolLike>\n );\n }\n\n /**\n * Execute a tool invocation\n *\n * @param {ToolInvocationInterface} toolInvocation The tool to invoke and the input to pass to it.\n * @param {RunnableConfig | undefined} config Optional configuration to pass to the tool when invoked.\n * @returns Either the result of the tool invocation (`string` or `ToolMessage`, set by the `ToolOutput` generic) or a string error message.\n */\n async _execute(\n toolInvocation: ToolInvocationInterface,\n config?: RunnableConfig\n ): Promise<ToolExecutorOutputType> {\n if (!(toolInvocation.tool in this.toolMap)) {\n return this.invalidToolMsgTemplate\n .replace(\"{requestedToolName}\", toolInvocation.tool)\n .replace(\n \"{availableToolNamesString}\",\n Object.keys(this.toolMap).join(\", \")\n );\n } else {\n const tool = this.toolMap[toolInvocation.tool];\n const output = await tool.invoke(toolInvocation.toolInput, config);\n return output;\n }\n }\n}\n"],"mappings":";;AAQA,MAAM,4BAA4B;;AA0BlC,IAAa,eAAb,cAAkCA,0BAAAA,gBAGhC;CACA,gBAAgB;CAEhB;CAEA;CAEA;CAEA,YAAY,QAA0B;EACpC,MAAM,qBAAqB;GACzB,wBAAwB;GACxB,GAAG;GACJ;EACD,MAAM,QAAQC,0BAAAA,eAAe,KAC3B,OAAO,OAAgC,WACrC,KAAK,SAAS,OAAO,OAAO,CAC/B;AACD,QAAM;GACJ;GACA,QAAQ,EAAE;GACX,CAAC;AACF,OAAK,QAAQ,mBAAmB;AAChC,OAAK,yBAAyB,mBAAmB;AACjD,OAAK,UAAU,KAAK,MAAM,QACvB,KAAK,SAAS;AACb,OAAI,KAAK,QAAQ;AACjB,UAAO;KAET,EAAE,CACH;;;;;;;;;CAUH,MAAM,SACJ,gBACA,QACiC;AACjC,MAAI,EAAE,eAAe,QAAQ,KAAK,SAChC,QAAO,KAAK,uBACT,QAAQ,uBAAuB,eAAe,KAAK,CACnD,QACC,8BACA,OAAO,KAAK,KAAK,QAAQ,CAAC,KAAK,KAAK,CACrC;MAIH,QADe,MADF,KAAK,QAAQ,eAAe,MACf,OAAO,eAAe,WAAW,OAAO"}