/**
 * Every Look property a shorthand writes, transitively. `border` reaches all
 * twelve side parts through the three per-side shorthands, so a block that
 * writes `border` and `borderTopColor` is caught by the same lookup as one that
 * writes `border` and `borderWidth`.
 */
export declare const LOOK_SHORTHAND_LONGHANDS: ReadonlyMap<string, ReadonlySet<string>>;
/**
 * The two properties' overlap, when one writes what the other does — the
 * shorthand first. Null when the two are independent declarations, which is
 * every pair the browser resolves on its own.
 */
export declare function lookShorthandOverlap(left: string, right: string): {
    readonly shorthand: string;
    readonly longhand: string;
} | null;
/**
 * What a refusal offers instead of the pair: the shorthand's own longhands, so
 * the author can write the one they meant to override beside its siblings. The
 * list is the direct level rather than the closure — `border` answers with
 * borderWidth, borderStyle and borderColor rather than with all twelve side
 * parts, because that is the level a reader replaces it at.
 */
export declare function lookShorthandParts(shorthand: string): readonly string[];
//# sourceMappingURL=shorthands.d.ts.map