import { Buffer } from 'node:buffer';
/**
 * @summary Coerce a number array, Buffer, or Uint8Array to a Buffer.
 * @remarks Already existing Buffers are returned as-is.
 * Uint8Arrays are converted to Buffers without copying.
 * @param data
 */
export declare function asBuffer(data: number[] | Buffer | Uint8Array): Buffer;
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