import { InjectionToken, type Injector, type WritableSignal } from '@angular/core';
export declare const NGXTENSION_LOCAL_STORAGE: InjectionToken<Storage>;
export declare function provideLocalStorageImpl(impl: typeof globalThis.localStorage): {
    provide: InjectionToken<Storage>;
    useValue: Storage;
};
/**
 * Options to override the default behavior of the local storage signal.
 */
export type LocalStorageOptionsBase<T> = {
    /**
     * Determines if local storage syncs with the signal.
     * When true, updates in one tab reflect in others, ideal for shared-state apps.
     * @default true
     */
    storageSync?: boolean;
    /**
     * Override the default JSON.stringify function for custom serialization.
     * @param value
     */
    stringify?: (value: T) => string;
    /**
     * Override the default JSON.parse function for custom deserialization.
     * @param value
     */
    parse?: (value: string) => T;
    /**
     * Injector for the Injection Context
     */
    injector?: Injector;
};
export type LocalStorageOptionsNoDefault<T> = LocalStorageOptionsBase<T>;
export type LocalStorageOptionsWithDefaultValue<T> = LocalStorageOptionsNoDefault<T> & {
    /**
     * Default value for the signal.
     * Can be a value or a function that returns the value.
     */
    defaultValue: T | (() => T);
};
type ClearOnKeyChange = {
    /**
     * Specifies whether the value stored under the previous key
     * should be removed from `localStorage` when the key changes.
     * @default true
     */
    clearOnKeyChange?: boolean;
};
export type LocalStorageOptionsComputedNoDefault<T> = LocalStorageOptionsBase<T> & ClearOnKeyChange;
export type LocalStorageOptionsComputedWithDefaultValue<T> = LocalStorageOptionsWithDefaultValue<T> & ClearOnKeyChange;
export type LocalStorageOptions<T> = LocalStorageOptionsNoDefault<T> | LocalStorageOptionsWithDefaultValue<T> | LocalStorageOptionsComputedNoDefault<T> | LocalStorageOptionsComputedWithDefaultValue<T>;
type LocalStorageSignal<T> = WritableSignal<T>;
export declare const injectLocalStorage: {
    <T>(key: string, options: LocalStorageOptionsWithDefaultValue<T>): LocalStorageSignal<T>;
    <T>(key: string, options?: LocalStorageOptionsNoDefault<T>): LocalStorageSignal<T | undefined>;
    <T>(keyComputation: () => string, options: LocalStorageOptionsComputedWithDefaultValue<T>): LocalStorageSignal<T>;
    <T>(keyComputation: () => string, options?: LocalStorageOptionsComputedNoDefault<T>): LocalStorageSignal<T | undefined>;
};
export {};