@nanocollective/nanocoder/dist/message-handler.js

A local-first CLI coding agent that brings the power of agentic coding tools like Claude Code and Gemini CLI to local models or controlled APIs like OpenRouter

import { formatError } from './utils/error-formatter.js';
import { parseToolArguments } from './utils/tool-args-parser.js';
// This will be set by the ChatSession
let toolRegistryGetter = null;
// This will be set by the App
let toolManagerGetter = null;
export function setToolRegistryGetter(getter) {
    toolRegistryGetter = getter;
}
export function setToolManagerGetter(getter) {
    toolManagerGetter = getter;
}
export function getToolManager() {
    return toolManagerGetter ? toolManagerGetter() : null;
}
export async function processToolUse(toolCall) {
    // Handle XML validation errors by throwing (will be caught and returned as error ToolResult)
    if (toolCall.function.name === '__xml_validation_error__') {
        const args = toolCall.function.arguments;
        throw new Error(args.error);
    }
    if (!toolRegistryGetter) {
        throw new Error('Tool registry not initialized');
    }
    const toolRegistry = toolRegistryGetter();
    const handler = toolRegistry[toolCall.function.name];
    if (!handler) {
        throw new Error(`Unknown tool: ${toolCall.function.name}`);
    }
    try {
        // Parse arguments - use strict mode to throw error on parse failure
        // Strict mode is required here to catch malformed arguments before tool execution
        const parsedArgs = parseToolArguments(toolCall.function.arguments, { strict: true });
        const result = await handler(parsedArgs);
        return {
            tool_call_id: toolCall.id,
            role: 'tool',
            name: toolCall.function.name,
            content: result,
        };
    }
    catch (error) {
        // Convert exceptions to error messages that the model can see and correct
        const errorMessage = `Error: ${formatError(error)}`;
        return {
            tool_call_id: toolCall.id,
            role: 'tool',
            name: toolCall.function.name,
            content: errorMessage,
        };
    }
}
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