import { ToolDefinition } from '../core/schema.js';
/**
 * FunctionExecutor - Executes async functions
 * Supports functions defined in:
 * 1. Embedded code in tool YAML (legacy)
 * 2. Colocated .ts files (recommended)
 *
 * For .ts files, the tool directory structure should be:
 * tools/provider/tool-name/
 * ├── definition.yaml
 * └── tool-name.ts (exports default async function)
 */
export declare class FunctionExecutor {
    private toolsPath;
    constructor(toolsPath?: string);
    /**
     * Execute a tool that runs an async function.
     * Supports both embedded code and external .ts/.js files.
     *
     * @param tool - Tool definition
     * @param params - Tool parameters
     * @param credentials - Optional per-call credential overrides passed as `context.credentials`
     *   to the tool function. The function can use them with:
     *   `const token = context?.credentials?.MY_TOKEN ?? process.env.MY_TOKEN;`
     *   Values are never logged. Falls back to undefined when not provided.
     */
    execute(tool: ToolDefinition, params: Record<string, unknown>, credentials?: Record<string, string>): Promise<unknown>;
}
export default FunctionExecutor;
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