import type { Automerge, ObjID, Prop } from "./wasm_types.js";
/**
 * The most basic CRDT: an integer value that can be changed only by
 * incrementing and decrementing. Since addition of integers is commutative,
 * the value trivially converges.
 */
export declare class Counter {
    value: number;
    constructor(value?: number);
    /**
     * A peculiar JavaScript language feature from its early days: if the object
     * `x` has a `valueOf()` method that returns a number, you can use numerical
     * operators on the object `x` directly, such as `x + 1` or `x < 4`.
     * This method is also called when coercing a value to a string by
     * concatenating it with another string, as in `x + ''`.
     * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf
     */
    valueOf(): number;
    /**
     * Returns the counter value as a decimal string. If `x` is a counter object,
     * this method is called e.g. when you do `['value: ', x].join('')` or when
     * you use string interpolation: `value: ${x}`.
     */
    toString(): string;
    /**
     * Returns the counter value, so that a JSON serialization of an Automerge
     * document represents the counter simply as an integer.
     */
    toJSON(): number;
    /**
     * Increases the value of the counter by `delta`. If `delta` is not given,
     * increases the value of the counter by 1.
     *
     * Will throw an error if used outside of a change callback.
     */
    increment(_delta: number): number;
    /**
     * Decreases the value of the counter by `delta`. If `delta` is not given,
     * decreases the value of the counter by 1.
     *
     * Will throw an error if used outside of a change callback.
     */
    decrement(_delta: number): number;
}
/**
 * An instance of this class is used when a counter is accessed within a change
 * callback.
 */
declare class WriteableCounter extends Counter {
    context: Automerge;
    path: Prop[];
    objectId: ObjID;
    key: Prop;
    constructor(value: number, context: Automerge, path: Prop[], objectId: ObjID, key: Prop);
    /**
     * Increases the value of the counter by `delta`. If `delta` is not given,
     * increases the value of the counter by 1.
     */
    increment(delta: number): number;
    /**
     * Decreases the value of the counter by `delta`. If `delta` is not given,
     * decreases the value of the counter by 1.
     */
    decrement(delta: number): number;
}
/**
 * Returns an instance of `WriteableCounter` for use in a change callback.
 * `context` is the proxy context that keeps track of the mutations.
 * `objectId` is the ID of the object containing the counter, and `key` is
 * the property name (key in map, or index in list) where the counter is
 * located.
 */
export declare function getWriteableCounter(value: number, context: Automerge, path: Prop[], objectId: ObjID, key: Prop): WriteableCounter;
export {};
