import { FunctionTool, JSONValue } from "llamaindex";
import { FGAAuthorizerBase } from "@auth0/ai/FGA";
export type LlamaToolHandler<T> = (input: T) => JSONValue | Promise<JSONValue>;
/**
 * The FGAAuthorizer class implements the FGA authorization control for a LlamaIndex AI tool.
 *
 * This class extends the FGAAuthorizerBase and provides a method to build a tool authorizer
 * that protects the tool execution using FGA.
 *
 */
export declare class FGAAuthorizer extends FGAAuthorizerBase<[
    any,
    object | undefined
]> {
    /**
     *
     * Builds a tool authorizer that protects the tool execution with FGA.
     *
     * @returns A tool authorizer.
     */
    authorizer(): <T, R extends JSONValue | Promise<JSONValue>, AdditionalToolArgument extends object = object>(t: FunctionTool<T, R, AdditionalToolArgument>) => FunctionTool<any, JSONValue | Promise<JSONValue>, object>;
}
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