export declare function copyDir(src: string, dest: string, ancestorRealPaths?: Set<string>): void;
export declare function cloneServerBundleForFunction(src: string, dest: string): void;
export declare function pruneSsrIslandFromRewritingClone(dest: string, entryText: string): number;
export declare function readPackageManifest(packageDir: string): Record<string, unknown> | null;
/**
 * The browser runtime copied into serverless functions, by exact package name.
 *
 * Exact names, never the `@sparticuz` scope: another dependency can install an
 * unrelated package into the same scope, and a scope-wide delete takes it with
 * no way for the closure walk to prove it is still needed. build.ts imports
 * this rather than declaring its own copy, so the list that is copied in and
 * the list that is pruned out cannot drift apart.
 */
export declare const SERVERLESS_BROWSER_RUNTIME_PACKAGES: readonly ["@sparticuz/chromium-min", "playwright-core"];
export declare function pruneBrowserRuntimeFromNonAgentClone(dest: string, entryText: string): number;