/**
 * Prop Authority Resolution
 *
 * A prop on a translation is either inherited from the canonical page
 * ('canonical') or owned by the translation ('locale'). That answer comes from
 * three places, in precedence order: the prop's own override, the default its
 * slot's template declares, and a site-wide fallback. The server resolves the
 * same chain when it judges a write, so a client that stops at the override map
 * shows an authority the server disagrees with.
 */
import type { AuthorityOverridesResult, PropAuthority } from '@pantheon-systems/css-client';
/**
 * The authority a slot's props take when no override names them.
 */
export declare function slotAuthority(result: AuthorityOverridesResult | null, slotId: string): PropAuthority;
/**
 * The effective authority of a single prop.
 */
export declare function resolveAuthority(result: AuthorityOverridesResult | null, slotId: string, propName: string): PropAuthority;
/**
 * Whether moving a prop to `target` needs an override stored, or is reached by
 * dropping the one it has. Storing an override that repeats the slot default
 * would survive a later change to that default and silently pin the prop.
 */
export declare function needsOverride(result: AuthorityOverridesResult | null, slotId: string, target: PropAuthority): boolean;