/**
 * Node/Bun/Deno bundler implementation using native esbuild.
 *
 * This is significantly faster than esbuild-wasm as it uses the native
 * esbuild binary instead of WebAssembly.
 */
import type { IBundler, BundleOptions, BundleResult } from "../types";
export interface EsbuildNativeBundlerOptions {
    /**
     * Base URL for CDN imports.
     * npm imports like "lodash" are rewritten to "{cdnBaseUrl}/lodash@{version}".
     * @default "https://esm.sh"
     */
    cdnBaseUrl?: string;
    /**
     * ECMAScript target for esm.sh CDN imports.
     *
     * This sets the `?target=` query parameter on esm.sh URLs to ensure
     * consistent output. Without this, esm.sh uses User-Agent detection
     * which can vary between environments.
     *
     * @example "es2020"
     * @example "es2022"
     * @default "es2020"
     */
    esmTarget?: string;
}
/**
 * Bundler implementation using native esbuild.
 *
 * Uses the native esbuild binary for maximum performance.
 * Works with Node.js, Bun, and Deno.
 *
 * @example
 * ```ts
 * const bundler = new EsbuildNativeBundler();
 *
 * const result = await bundler.bundle({
 *   fs: myFilesystem,
 *   entryPoint: "/src/index.ts",
 * });
 * ```
 */
export declare class EsbuildNativeBundler implements IBundler {
    private options;
    private esbuild;
    constructor(options?: EsbuildNativeBundlerOptions);
    /**
     * Initialize the bundler by loading native esbuild.
     * Called automatically on first bundle() if not already initialized.
     */
    initialize(): Promise<void>;
    private getEsbuild;
    /**
     * Dispose of the esbuild service.
     * This stops the esbuild child process and allows the Node.js process to exit.
     */
    dispose(): Promise<void>;
    bundle(options: BundleOptions): Promise<BundleResult>;
}
/**
 * Create a native esbuild bundler.
 */
export declare function createEsbuildNativeBundler(options?: EsbuildNativeBundlerOptions): EsbuildNativeBundler;
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