import { type ContentChange } from './diff.js';
/**
 * When two captures of the same surface are different product states, the
 * certification differ still emits computed-style findings (a mode chip's
 * background, a focus ring on a different button). Those are not a restyle
 * the reviewer should approve. Detect the mismatch from the opt-in content
 * layer; the report then withholds those findings from the style gate.
 *
 * The differ itself stays exact (no tolerance). This is report classification.
 */
export type IncomparableProductState = {
    surfaceBase: string;
    evidence: string[];
};
/** True when both sides are distinct mode-like labels, not a small copy edit. */
export declare function isWholesaleLabelReplacement(before: string, after: string): boolean;
/** Evidence strings when this surface's content layer is a different product state. */
export declare function productStateMismatchEvidence(changes: ContentChange[]): string[];
/** Collapse per-width content diffs onto product surface bases. */
export declare function incomparableProductStates(surfaces: {
    surface: string;
    changes: ContentChange[];
}[]): IncomparableProductState[];
export declare function incomparableSurfaceBaseSet(states: IncomparableProductState[]): Set<string>;