/** Height of a single composer row; also the resting height of an empty input. */
export declare const COMPOSER_BASE_HEIGHT = "2.5rem";
interface ComposerHeightInput {
    /** Current textarea value. */
    value: string;
    /** `scrollHeight` measured after resetting the inline height to `auto`. */
    scrollHeight: number;
}
/**
 * Resolves the autosized height for the chat composer textarea.
 *
 * An empty composer can never need more than the single base row, so a
 * measurement taken before the surrounding layout settled (narrow windows,
 * panels still animating, fonts not applied yet) is discarded instead of being
 * pinned to the element until the user types.
 */
export declare function resolveComposerHeight({ value, scrollHeight, }: ComposerHeightInput): string;
export {};
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