/**
 * Pure formatting helpers (no I/O, safe for the domain layer to import).
 */
/**
 * Format a byte count into a human-readable string.
 * Matches the algorithm used in World.sizeFormatted (no space between number and unit).
 * e.g. 1024 → "1.0KB", 1536 → "1.5KB"
 */
export declare function formatWorldBytes(bytes: number): string;
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