export declare const DOCX_EXPLICIT_ZERO_KERNING_THRESHOLD_SENTINEL: number;
export type DocxKerningThresholdInspection = {
    status: 'absent';
} | {
    status: 'invalid';
} | {
    status: 'valid';
    value: number;
};
export declare function docxKerningThresholdValue(value: unknown): number | undefined;
export declare function docxKerningThresholdHalfPointsFromProperties(properties: Element | null | undefined): number | undefined;
export declare function resolveDocxKerningThresholdHalfPoints(propertySources: readonly Element[]): number | undefined;
export declare function inspectDocxKerningThresholdHalfPoints(properties: Element | null | undefined): DocxKerningThresholdInspection;
export declare function patchDocxExplicitZeroKerningThresholds(buffer: ArrayBuffer): Promise<ArrayBuffer>;