import { type WorkDocumentScriptFontSlot } from './work-document-script-fonts';
export declare const DOCUMENT_PROOFING_LANGUAGES_ATTRIBUTE = "data-office-proofing-languages";
export declare const DOCUMENT_NO_PROOF_ATTRIBUTE = "data-office-no-proof";
export interface WorkDocumentProofingLanguages {
    latin?: string;
    eastAsia?: string;
    bidi?: string;
}
export type WorkDocumentProofingLanguageSlot = keyof WorkDocumentProofingLanguages;
export declare function normalizeDocumentLanguageTag(source: unknown): string | null;
export declare function normalizeDocumentProofingLanguages(source: unknown): WorkDocumentProofingLanguages | null;
export declare function serializeDocumentProofingLanguages(source: unknown): string | undefined;
export declare function parseDocumentProofingLanguages(source: unknown): WorkDocumentProofingLanguages | null;
export declare function normalizeDocumentNoProof(source: unknown): boolean | null;
export declare function documentProofingLanguagesFromElement(element: HTMLElement): WorkDocumentProofingLanguages | null;
export declare function documentNoProofFromElement(element: HTMLElement): boolean | null;
export declare function documentProofingLanguageForScript(source: unknown, slot?: WorkDocumentScriptFontSlot | null): string | undefined;
export declare function documentProofingDomAttributes(languagesSource: unknown, noProofSource?: unknown, slot?: WorkDocumentScriptFontSlot | null): Record<string, string>;
export declare function patchDocumentProofingLanguages(source: unknown, patch: Partial<Record<WorkDocumentProofingLanguageSlot, string | null>>): WorkDocumentProofingLanguages | null;