/**
 * Loader Helpers
 *
 * Helper functions for ESM module loading: cache directory initialization,
 * project directory resolution, framework bundle validation, and VF module
 * import discovery/processing.
 *
 * @module build/transforms/mdx/esm-module-loader/loader-helpers
 */
import type { ESMLoaderContext } from "./types.js";
/**
 * Check which framework bundles are missing from disk.
 * Returns the list of missing file paths.
 */
export declare function findMissingFrameworkBundles(paths: string[]): Promise<string[]>;
export declare function resolveProjectDir(context: ESMLoaderContext): string;
/**
 * Initialize the ESM cache directory.
 * Includes contentSourceId in the path to isolate preview vs production caches.
 */
export declare function initializeCacheDir(context: ESMLoaderContext): Promise<string>;
/**
 * Find /_vf_modules/ imports in code.
 */
export declare function findVfModuleImports(code: string): Array<{
    original: string;
    path: string;
    suffix: string;
    start: number;
    end: number;
    isDynamic?: boolean;
}>;
/**
 * Process /_vf_modules/ imports and replace them with file:// paths.
 */
export declare function processVfModuleImports(code: string, imports: Array<{
    original: string;
    path: string;
    suffix?: string;
    start: number;
    end: number;
    isDynamic?: boolean;
}>, context: ESMLoaderContext, projectDir: string, strictMissingModules: boolean): Promise<string>;
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