export interface Resolver {
    requestToFile?(publicPath: string, root: string): string | undefined;
    fileToRequest?(filePath: string, root: string): string | undefined;
    alias?: ((id: string) => string | undefined) | Record<string, string>;
}
export interface InternalResolver {
    requestToFile(publicPath: string): string;
    fileToRequest(filePath: string): string;
    normalizePublicPath(publicPath: string): string;
    alias(id: string): string | undefined;
    resolveRelativeRequest(publicPath: string, relativePublicPath: string): {
        pathname: string;
        query: string;
    };
    isPublicRequest(publicPath: string): boolean;
}
export declare const supportedExts: string[];
export declare const mainFields: string[];
export declare function createResolver(root: string, resolvers?: Resolver[], userAlias?: Record<string, string>): InternalResolver;
export declare const jsSrcRE: RegExp;
/**
 * Redirects a bare module request to a full path under /@modules/
 * It resolves a bare node module id to its full entry path so that relative
 * imports from the entry can be correctly resolved.
 * e.g.:
 * - `import 'foo'` -> `import '/@modules/foo/dist/index.js'`
 * - `import 'foo/bar/baz'` -> `import '/@modules/foo/bar/baz.js'`
 */
export declare function resolveBareModuleRequest(root: string, id: string, importer: string, resolver: InternalResolver): string;
export declare function resolveOptimizedModule(root: string, id: string): string | undefined;
interface NodeModuleInfo {
    entry: string | undefined;
    entryFilePath: string | undefined;
    pkg: any;
}
export declare function resolveNodeModule(root: string, id: string, resolver: InternalResolver): NodeModuleInfo | undefined;
export declare function resolveNodeModuleFile(root: string, id: string): string | undefined;
export {};