import type { Bud } from '@roots/bud-framework';
import type { Compilation, Compiler, WebpackPluginInstance } from '@roots/bud-framework/config';
import { Extension } from '@roots/bud-framework/extension';
/**
 * Acorn adapter
 *
 * @see {@link https://github.com/roots/acorn}
 */
export default class Acorn extends Extension implements WebpackPluginInstance {
    /**
     * Writes hmr.json for use with {@link https://github.com/roots/acorn/}
     */
    addAcornHotManifest(compiler: Compiler, compilation: Compilation): () => void;
    /**
     * {@link WebpackPluginInstance.apply}
     */
    apply(compiler: Compiler): boolean;
    /**
     * {@link Extension.buildBefore}
     */
    buildBefore(bud: Bud): Promise<void>;
}