/**
 * Missing/undefined on a widget GET payload means include — the default, and
 * the shape older clients already understand. Only an explicit `false` turns
 * the catalog off.
 *
 * Native has no CSS cascade for class declaration bodies. This flag is
 * honored so a later emission product cannot ignore `includeClassDefinitions`.
 * Until then, class bodies are dropped (not mapped to StyleSheet).
 */
export declare function shouldIncludeClassDefinitionsOnPublishedWidget(includeClassDefinitions?: boolean | null): boolean;
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