/**
 * Zigzag encoding/decoding for protobuf-style varints.
 *
 * Zigzag encoding converts signed integers to unsigned by interleaving
 * negative and positive values: 0, -1, 1, -2, 2, ... This allows efficient
 * varint encoding of small negative numbers.
 *
 * @module
 */
/**
 * Zigzag encode a number using arithmetic operations.
 * This supports the full safe integer range (up to Number.MAX_SAFE_INTEGER).
 * Formula: n < 0 ? -2*n - 1 : 2*n
 *
 * Used for encoding IDs in vector tiles to convert negative IDs to positive numbers
 * for unsigned varint encoding.
 */
export declare function zigzag(num: number): number;
/**
 * Zigzag encode using bitwise operations (for geometry deltas only).
 * This is faster but limited to 32-bit signed integers.
 * Used for small coordinate deltas in geometry encoding.
 */
export declare function zigzag32(num: number): number;
/**
 * Decode zigzag-encoded number back to original value.
 * Zigzag encoding is used to convert negative IDs to positive numbers for unsigned varint
 * encoding in vector tiles. Uses arithmetic-based decoding to support the full safe integer range.
 *
 * Formula: (encoded & 1) === 1 ? -(encoded + 1) / 2 : encoded / 2
 */
export declare function decodeZigzag(encoded: number): number;
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