import type { UltraHonkBackend } from "@aztec/bb.js";
import type { CompiledCircuit, Noir } from "@noir-lang/noir_js";
import type { HardhatConfig, HardhatRuntimeEnvironment } from "hardhat/types";
export declare class NoirExtension {
    private hre;
    constructor(hre: HardhatRuntimeEnvironment);
    /**
     * Get the JSON of the given circuit by name.
     */
    getCircuitJson(name: string): Promise<CompiledCircuit>;
    /**
     * Creates a Noir and Backend instances for the given circuit.
     * Call this only once per circuit as it creates a new backend each time.
     *
     * @param name name of the circuit
     * @param backendClass Backend class. Currently, only {@link UltraHonkBackend}-like backends are supported.
     */
    getCircuit<T = UltraHonkBackend>(name: string, backendClass?: new (bytecode: string) => T): Promise<{
        circuit: CompiledCircuit;
        noir: Noir;
        backend: T;
    }>;
}
export declare function getTarget(noirDir: string | HardhatConfig): Promise<string>;
//# sourceMappingURL=Noir.d.ts.map