/**
 * Bounds-checked slicing.
 *
 * Layer 0. Every offset here is a plain JS number — exact to 2^53 — and is never touched by
 * `|0`, `<<`, `>>` or `>>>`. A data offset in a multi-gigabyte BDF routinely exceeds 2^31,
 * where every bitwise operator silently wraps it to a negative number. (Bitwise ops are
 * correct and required for SAMPLE decoding, which operates on 16- and 24-bit values.)
 */
/**
 * A VIEW of `length` bytes at `offset`, sharing memory with `bytes` — no copy is made.
 *
 * Nothing in edfcore mutates a source buffer, so a view is safe to read for as long as the
 * buffer lives. A caller that pools or reuses buffers must not retain the view past that
 * reuse: use `copyBytes` when the bytes have to outlive the read that produced them.
 */
export declare function sliceBytes(bytes: Uint8Array, offset: number, length: number): Uint8Array;
/** `length` bytes at `offset`, copied into a buffer of their own. */
export declare function copyBytes(bytes: Uint8Array, offset: number, length: number): Uint8Array;
/**
 * The RAW, untrimmed text of a fixed-width header field, decoded as ISO-8859-1.
 *
 * Untrimmed on purpose: `raw.*` on the header exposes what the file actually wrote, and the
 * numeric grammars need the padding to tell a right-justified field from a conformant one.
 * Callers that want the value trim it themselves with `trimEdfField`.
 */
export declare function readAsciiField(bytes: Uint8Array, offset: number, length: number): string;
//# sourceMappingURL=view.d.ts.map