/**
 * What moved while the in-place path was taking its screenshots.
 *
 * The guard that rejects a subject for moving mid-capture is the one message a
 * caller has to act on, and it is thrown from the only place that still holds
 * both readings. Reporting that "something" changed spends that position on
 * nothing: the reader is sent back to the page to re-find a caret, an animation
 * or a poll that this function can already name.
 */
import { documentDigest } from '@variance-authority/core/format';
import type { AccessibilitySnapshot, SemanticSnapshot } from '@variance-authority/core/format';
/** The four independently digested readings the in-place guard compares. */
export interface InPlaceReading {
    readonly document: Parameters<typeof documentDigest>[0];
    readonly snapshot: SemanticSnapshot;
    readonly accessibility: AccessibilitySnapshot;
    readonly stabilization: {
        readonly digest?: string;
    };
}
/**
 * Name every facet that disagrees between two readings of one subject.
 *
 * Structure and style are reported apart even though one snapshot digest covers
 * both, because they point at different writers: a node count that moved is a
 * render still running, and style alone is a transition or a theme settling.
 */
export declare function driftBetween(before: InPlaceReading, after: InPlaceReading): readonly string[];
/** Read a drift list back as the subject of a sentence. */
export declare function listDrift(drifted: readonly string[]): string;
/**
 * The places the page agent saw change, capped, as the end of a sentence.
 *
 * Capped for the reason `whereUnstable` is: a subject that changes everywhere is
 * described by the first few places.
 */
export declare function listMutated(mutated: readonly string[]): string;
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