import type { IfcSourceHeader } from '@ifc-lite/data';
/**
 * Parse the HEADER section of a STEP/IFC buffer into {@link IfcSourceHeader}.
 * Returns `undefined` when no recognisable header records are present (e.g.
 * non-STEP input). Cheap: only the first {@link MAX_HEADER_BYTES} are decoded,
 * truncated at the first `ENDSEC` so the DATA section is never scanned.
 */
export declare function parseSourceHeader(buffer: Uint8Array): IfcSourceHeader | undefined;
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