/**
 * The in-memory adapter.
 *
 * Layer 5. Zero-copy by construction: a read hands back a `subarray` view over the caller's own
 * buffer. That is safe precisely because it is the caller's buffer — the "returned array is
 * owned by the caller" rule exists to stop an adapter handing out a view into state it retains,
 * and this adapter retains nothing the caller does not already hold.
 */
import type { ByteSource } from '../types.js';
/**
 * A `ByteSource` over bytes already in memory, for a file you fetched yourself or a fixture in a
 * test. The signedness of the view is checked at construction rather than at first read: an
 * `Int8Array` has one byte per element and would decode into plausible, wrong sample values.
 */
export declare function byteSource(bytes: ArrayBuffer | Uint8Array): ByteSource;
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