/**
 * `FileBadge` geometry — its own module, so the arithmetic is unit-testable
 * without rendering the badge.
 *
 * A `FileBadge`'s `size` is its WIDTH; every other dimension scales off it, so the badge
 * has a FIXED aspect (26 × 32 at the default) and is TALLER than it is wide. A caller that
 * owns a SQUARE slot — the thumbnail family, whose `size` is the tile side — therefore
 * cannot pass its tile side through as a width: the badge would overflow the tile's
 * bottom. `fileBadgeWidthForBox` converts a square slot to the width that fits it.
 */
/** The default badge width. A default badge is exactly `FILE_BADGE_BOX` tall. */
export declare const FILE_BADGE_DEFAULT_WIDTH = 26;
/** The height of a default-width badge — and the square slot it exactly fills. */
export declare const FILE_BADGE_BOX = 32;
/** The badge's height at a given width. The aspect is fixed. */
export declare function fileBadgeHeight(width: number): number;
/**
 * The widest badge that fits inside a `box`×`box` square slot — height is the binding
 * dimension, since the badge is taller than it is wide. `fileBadgeWidthForBox(32)` is
 * `FILE_BADGE_DEFAULT_WIDTH`: the default badge fills the compact thumbnail slot exactly.
 */
export declare function fileBadgeWidthForBox(box: number): number;