import type { ModelPool } from '../pool.js';
import type { ModelStore } from '../store.js';
import { ModelEngine, EngineStartContext } from '../types/index.js';
export declare const BuiltInEngines: {
    readonly gpt4all: "gpt4all";
    readonly nodeLlamaCpp: "node-llama-cpp";
    readonly transformersJs: "transformers-js";
    readonly stableDiffusionCpp: "stable-diffusion-cpp";
};
export type BuiltInEngineName = typeof BuiltInEngines[keyof typeof BuiltInEngines];
export declare const builtInEngineNames: string[];
export declare class CustomEngine implements ModelEngine {
    pool: ModelPool;
    store: ModelStore;
    start({ pool, store }: EngineStartContext): Promise<void>;
    prepareModel(): Promise<void>;
    createInstance(): Promise<void>;
    disposeInstance(): Promise<void>;
}