import type { SourceFileCache } from '@angular/build/private';
/**
 * Files the federation compilation actually tracked, deduplicated and without
 * node_modules — the watch list for federation-only rebuilds.
 *
 * Where Angular's `SourceFileCache` records a tracked file depends on the
 * compilation mode. With in-process type checking (`NG_BUILD_PARALLEL_TS=0`)
 * `augmentHostWithCaching` fills the outer Map with parsed `.ts` sources; on
 * the default parallel path the type checker runs in a worker with its own
 * cache and the outer Map stays empty. On both paths emitted `.ts` output
 * lands in `typeScriptFileCache`, and templates/styles are listed only in
 * `referencedFiles`. Reading only `keys()` therefore always missed templates
 * and styles, and on the parallel path missed every tracked file — so
 * shared-mapping and exposed sources never invalidated and the dev server
 * kept serving stale bundles until it was restarted.
 */
export declare function federationSourceFiles(cache: SourceFileCache): string[];
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