import type { BuildOptions, Format } from 'esbuild';
import type { IBundler, IBundlerOption, IBundlerResult } from '../../abstraction/index.js';
export declare abstract class EsbuildBundler implements IBundler {
    protected abstract mapOption(option: IBundlerOption): BuildOptions;
    devAsync(option: IBundlerOption): Promise<IBundlerResult>;
    buildAsync(option: IBundlerOption): Promise<IBundlerResult>;
    protected bundleAsync(option: BuildOptions): Promise<IBundlerResult>;
    protected getOutExtension(format: Format): Record<string, string>;
    protected mapExtension(format: Format): string;
}