import { Length } from '../options';
/**
 * A length option against the room it is measured in: pixels pass through,
 * a percentage resolves against `basis`. Undefined means "no limit" — nothing
 * was given, the value is malformed, or a percentage was asked of an
 * unbounded basis. Negative values collapse to zero rather than flipping.
 */
export declare function resolveLength(value: Length | undefined, basis: number): number | undefined;