import { type Source } from "./source.js";
/**
 * Extracts and compiles patterns from the file.
 *
 * @see {@link ruleCompile}
 *
 * @since 0.6.0
 */
export declare function extractPackageJson(source: Source, content: Buffer): void | null | Error;
/**
 * Extracts and compiles patterns from the file.
 *
 * @see {@link ruleCompile}
 *
 * @since 0.8.0
 */
export declare function extractPackageJsonNocase(source: Source, content: Buffer): void | null | Error;