/**
 * The `Blob`/`File` adapter.
 *
 * Layer 5. The DOM `Blob` is never named: `BlobLike` is the structural shim from `types.ts`, so
 * a real `File` from an `<input type="file">` remains assignable while `lib: ["DOM"]` stays out
 * of the published `.d.ts`.
 *
 * A `Blob` read is the one place where the platform can legitimately hand back fewer bytes than
 * asked (a `File` whose backing file changed on disk since the picker ran), so the exact-length
 * contract is verified rather than assumed.
 */
import type { BlobLike, ByteSource } from '../types.js';
/**
 * A `ByteSource` over a `Blob` or `File` — the browser entry point, and what an
 * `<input type="file">` hands you. Reads are ranged, so opening a file the user picked costs the
 * header rather than the recording.
 */
export declare function blobSource(blob: BlobLike): ByteSource;
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