/** Returns the language ids that have already been announced via the
 *  "STYLE PACK ACTIVE" badge for this cwd. */
export declare function getAnnouncedLanguages(cwd: string): string[];
/** Add language ids to the announced set for this cwd. No-op if the input
 *  is empty or adds nothing new. */
export declare function markLanguagesAnnounced(cwd: string, langs: readonly string[]): void;
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