export declare enum ProfileThread {
    MAIN = "main",
    NETWORK = "network",
    DISC5 = "discv5"
}
export declare function profileThread(thread: ProfileThread, durationMs: number, dirpath: string): Promise<string>;
/**
 * Write heap snapshot of the current thread to the specified file.
 */
export declare function writeHeapSnapshot(prefix: string, dirpath: string): Promise<string>;
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