export declare const TESTID_ROOT = "kld";
/** Default static prefixes for the two control families that have no preset scope. */
export declare const TRANSFORM_TESTID_PREFIX = "kld.transform";
export declare const MASK_TESTID_PREFIX = "kld.mask";
/**
 * Normalize a display string to a stable id segment: lowercase, spaces and
 * underscores to `-`, drop anything outside `[a-z0-9-]`, collapse repeats, trim.
 */
export declare function slug(s: string): string;
/**
 * The scope a ControlForm's fields hang off: `kld.<preset>.<layer>`, or
 * `kld.<layer>` when rendered standalone (no Tuner provides a preset).
 */
export declare function controlScope(presetId: string | null, layerId: string): string;
/** One field's id within its form scope: `<scope>.<uniform>`. */
export declare function fieldTestId(scope: string, uniform: string): string;
/** A rotation button: `<prefix>.rotate-<deg>`. */
export declare function rotateTestId(prefix: string, deg: number): string;
/** A flip toggle: `<prefix>.flip-<axis>`. */
export declare function flipTestId(prefix: string, axis: 'x' | 'y'): string;
/** A family tab: `kld.family.<slug>`. */
export declare function familyTestId(family: string): string;
/**
 * A category menu item, qualified by its family so the same label under two
 * families does not collide: `kld.category.<slug-family>.<slug-category>`.
 */
export declare function categoryTestId(family: string, category: string): string;
/** A preset tile: `kld.preset.<id>` (id is the book key, already a stable token). */
export declare function presetTileTestId(id: string): string;
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