import type { IntervalFnOptions } from "svelteshareds";
/**
 * Performance.memory
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/API/Performance/memory
 */
export interface MemoryInfo {
    /**
     * The maximum size of the heap, in bytes, that is available to the context.
     */
    jsHeapSizeLimit: number;
    /**
     *  The total allocated heap size, in bytes.
     */
    totalJSHeapSize: number;
    /**
     * The currently active segment of JS heap, in bytes.
     */
    usedJSHeapSize: number;
}
export interface MemoryOptions extends IntervalFnOptions {
    interval?: number;
}
/**
 * Reactive Memory Info.
 *
 * @param options
 */
export declare function memory(options?: MemoryOptions): {
    is_supported: import("svelte/store").Readable<boolean>;
    result: import("svelte/store").Readable<MemoryInfo | undefined>;
};
export declare type MemoryReturn = ReturnType<typeof memory>;