/**
 * @description Diff-annotation markers used to tag document items during pipeline
 * transformations. Each `Annotation` carries a human-readable `category` and a
 * display `color`. Pre-built singletons (`ADDED_ANNOTATION`, `REMOVED_ANNOTATION`,
 * `UNCHANGED_ANNOTATION`, `DETECTED_ANNOTATION`, `MODIFIED_ANNOTATION`) are
 * attached to page items so debug views can highlight what each stage changed.
 */
export default class Annotation {
    category: string;
    color: string;
    constructor(options: {
        category: string;
        color: string;
    });
}
export declare const ADDED_ANNOTATION: Annotation;
export declare const REMOVED_ANNOTATION: Annotation;
export declare const UNCHANGED_ANNOTATION: Annotation;
export declare const DETECTED_ANNOTATION: Annotation;
export declare const MODIFIED_ANNOTATION: Annotation;