import { VoiceFunction } from '../_types/sharedTypes';
export interface FunctionSignature {
    type: string;
    name: string;
    description: string;
    parameters?: {
        type: string;
        properties?: Record<string, {
            type: string;
            description: string;
        }>;
        required?: string[];
    };
}
export default class FrontendToolRegistry {
    private userFunctionSignatures;
    private discoveredFunctionSignatures;
    private backendFunctionSignatures;
    private userFunctionHandlers;
    private discoveredFunctionHandlers;
    private backendFunctionHandlers;
    constructor();
    get functionSignatures(): FunctionSignature[];
    registerEndUserTools(voiceFunctions: VoiceFunction[]): void;
    registerSistaFrontendTools(voiceFunctions: VoiceFunction[]): void;
    registerSistaBackendTools(voiceFunctions: VoiceFunction[]): void;
    private _registerFunctions;
    getFunctionHandler(functionName: string): Function | null;
    hasRegisteredFunctions(): boolean;
}