/**
 * Import Transformer
 *
 * Functions for rewriting and transforming import specifiers in MDX compiled code.
 * Handles project aliases, React paths, JSX transforms, and import map resolution.
 *
 * @module build/transforms/mdx/esm-module-loader/import-transformer
 */
import type { ImportMapConfig } from "../../../modules/import-map/index.js";
import type { DependencyPinningSourceInput } from "../../esm/package-registry.js";
import type { DependencyResolutionObservation } from "../../import-rewriter/dependency-resolution.js";
import type { ESMLoaderContext } from "./types.js";
/**
 * Rewrite @/ aliased imports to /_vf_modules/ paths.
 */
export declare function rewriteProjectAliasImports(code: string): Promise<string>;
/**
 * Transform bare React specifiers to local file:// paths for Bun/Node.
 * This ensures the same React instance as react-dom-server.
 * For Deno, getLocalReactPaths() returns an empty object, so this is a no-op.
 */
export declare function transformReactToLocalPaths(code: string): Promise<string>;
/**
 * Transform imports using project import maps.
 * React is intentionally left as a bare specifier for SSR consistency.
 */
export declare function transformImports(code: string, importMap: ImportMapConfig): string;
export interface MdxRootDependencyRewriteOptions {
    projectDir: string;
    projectId: string;
    reactVersion: string;
    dependencyPinningCacheKey?: string;
    dependencyPinningDependencies?: Readonly<Record<string, string>>;
    dependencyPinningSource?: DependencyPinningSourceInput;
    serverExternalPackages?: readonly string[];
    onDependencyResolutionObserved?: (observation: DependencyResolutionObservation) => void;
}
/**
 * Apply the existing MDX import-map behavior first, then pin remaining bare
 * dependencies with the parser-backed import rewriter. Flag-off code keeps
 * its pre-pinning identity and React remains owned by the existing MDX path.
 */
export declare function rewriteMdxRootDependencyImports(code: string, importMap: ImportMapConfig, options: MdxRootDependencyRewriteOptions): Promise<string>;
export declare function pinSameOriginSSRModuleImports(code: string, dependencyPinningCacheKey?: string, moduleServerOrigin?: string): Promise<string>;
/**
 * Transform JSX/TSX imports using esbuild.
 * Optimized to process all imports in parallel batches for better performance.
 */
export declare function transformJsxImports(code: string, adapter: ESMLoaderContext["adapter"], esmCacheDir: string): Promise<string>;
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