export type WorkDocumentTextCase = 'none' | 'all-caps' | 'small-caps';
export type DocumentSelectionCase = 'lower' | 'upper' | 'title';
export declare const DOCUMENT_TEXT_CASE_ATTRIBUTE = "data-office-text-case";
export declare const documentTextCaseKeyboardShortcuts: {
    readonly allCaps: "Mod-Shift-a";
    readonly smallCaps: "Mod-Shift-k";
    /** WPS/Word Shift+F3: cycle selected text lower → UPPER → Title. */
    readonly changeCase: "Shift-F3";
};
export declare function normalizeDocumentTextCase(value: unknown): WorkDocumentTextCase | null;
export declare function documentTextCaseFromWordFlags(allCaps: boolean | undefined, smallCaps: boolean | undefined): WorkDocumentTextCase | null;
export declare function applyDocumentTextCaseStyle(element: HTMLElement, textCase: WorkDocumentTextCase): void;
export declare function documentTextCaseCss(textCase: WorkDocumentTextCase): string;
export declare function detectDocumentSelectionCase(text: string): DocumentSelectionCase;
export declare function nextDocumentSelectionCase(current: DocumentSelectionCase): DocumentSelectionCase;
export declare function transformDocumentSelectionCase(text: string, next: DocumentSelectionCase): string;
export declare function cycleDocumentSelectionCaseText(text: string): string;