import type { JSONPatchOpHandler } from '../types.js';
/**
 * Create and maintain up to 15 boolean values in a single positive number (a bitmask). This can reduce the size of your
 * JSON document. Limiting the bits to 15 allows us to keep the number smaller (max of 9 characters), positive, and
 * allows us to combine multiple operations into a single number.
 *
 * ```js
 * import { bitmask } from '@json-patch/custom-types/bitmask';
 *
 * const patch = new JSONPatch([], { '@bit': bitmask });
 * ```
 *
 * Or you can subclass JSONPatch:
 * ```js
 * import { bitmask, mask } from '@json-patch/custom-types/bitmask';
 *
 * class MyJSONPatch extends JSONPatch {
 *   constructor(ops: JSONPatchOp[]) {
 *     super(ops, { '@bit': bitmask });
 *   }
 *
 *   bitOn(path: string, index: number) {
 *     return this.op('@bit', path, mask(index, true));
 *   }
 *
 *   bitOff(path: string, index: number) {
 *     return this.op('@bit', path, mask(index, false));
 *   }
 * }
 */
export declare const bit: JSONPatchOpHandler;
/**
 * A helper function to create a mask number for bitmask operations. The bottom 15 bits are used to turn bits on, and
 * the top 15 bits are used to turn bits off.
 */
export declare function bitmask(index: number, value: boolean): number;
export declare function applyBitmask(num: number, mask: number): number;
export declare function combineBitmasks(a: number, b: number): number;