import type { LintError } from '../lint.types.js';
/**
 * @purpose Validate presence of // @file: and // @consumers: directives at file top before first import.
 * @implements {FileHeaderCheck} in specs/cli/lint/lint.spec.md
 * @invariant Scans only lines before the first import statement; tags after import are ignored.
 * @param content Raw file content as string.
 * @param filePath Path to the file for error reporting.
 * @returns Empty array when both directives are present.
 */
export declare function check(content: string, filePath: string): LintError[];