import { ComputedOptions, ReactionOptions, ReactiveValueOptions } from "./reactive-primitive-types";
/**
 * A special symbol used to indicate that a reactive value has changed,
 * bypassing the standard equality check. This is useful in scenarios where
 * the content of the reactive values is not needed, but a change notification
 * is still desired. Assigning `CHANGED` as the content of the reactive value
 * will always result in change propagation. This, however, only applies
 * to the default equality check. If the equality check is overwritten,
 * `CHANGED` may need to be accounted for in the custom equality check
 */
export declare const CHANGED: unique symbol;
export declare const reactiveValueEquals: (oldValue: unknown, newValue: unknown) => boolean;
export declare const defaultEquals: (oldValue: unknown, newValue: unknown) => boolean;
export declare const defaultReactiveValueOptions: ReactiveValueOptions;
/**
 * Retrieves a copy of the default options used for reactive values.
 * This ensures that modifications to the returned options object do not affect
 * the global default settings.
 *
 * @returns A new object containing the current default `ReactiveValueOptions`.
 */
export declare const getDefaultReactiveValueOptions: () => ReactiveValueOptions;
/**
 * Configures the global default options for reactive values.
 * These defaults will be used by newly created reactive values unless overridden
 * by options provided at creation time.
 *
 * @param newOptions - An object containing partial `ReactiveValueOptions` to update.
 *   Only the specified properties will be updated; unspecified properties will retain
 *   their current default values. If a property is set to `undefined`, it will revert
 *   to its original default (e.g., `defaultEquals` for `equals`).
 */
export declare const configureDefaultReactiveValueOptions: (newOptions: Partial<ReactiveValueOptions>) => void;
export declare const defaultComputedOptions: ComputedOptions;
/**
 * Retrieves a copy of the default options used for computed atoms.
 * This ensures that modifications to the returned options object do not affect
 * the global default settings.
 *
 * @returns A new object containing the current default `ComputedOptions`.
 */
export declare const getDefaultComputedOptions: () => ComputedOptions;
/**
 * Configures the global default options for computed atoms.
 * These defaults will be used by newly created computed atoms unless overridden
 * by options provided at creation time.
 *
 * @param newOptions - An object containing partial `ComputedOptions` to update.
 *   Only the specified properties will be updated; unspecified properties will retain
 *   their current default values. If a property is set to `undefined`, it will revert
 *   to its original default (e.g., `defaultEquals` for `equals`).
 */
export declare const configureDefaultComputedOptions: (newOptions: Partial<ComputedOptions>) => void;
export declare const defaultReactionScheduler: (fn: () => void) => void;
export declare const defaultReactionOptions: ReactionOptions;
/**
 * Retrieves a copy of the default options used for reactions.
 * This ensures that modifications to the returned options object do not affect
 * the global default settings.
 *
 * @returns A new object containing the current default `ReactionOptions`.
 */
export declare const getDefaultReactionOptions: () => ReactionOptions;
/**
 * Configures the global default options for reactions.
 * These defaults will be used by newly created reactions unless overridden
 * by options provided at creation time.
 *
 * @param newOptions - An object containing partial `ReactionOptions` to update.
 *   Only the specified properties will be updated; unspecified properties will retain
 *   their current default values. If a property is set to `undefined`, it will revert
 *   to its original default (e.g., `defaultReactionScheduler` for `scheduler`).
 */
export declare const configureDefaultReactionOptions: (newOptions: Partial<ReactionOptions>) => void;