import type { BundleSnapshot } from '../bundle-state.js';
export declare function collectCssExtensionByStem(files: string[], cssMatcher: (file: string) => boolean): Map<string, string>;
export declare function collectRuntimeLinkedCssFiles(snapshot: BundleSnapshot, extensionByStem: Map<string, string>, fallbackExtension: string): Set<string>;
export declare function collectJsImportedCssFiles(snapshot: BundleSnapshot): Set<string>;