import { ResourceType } from '../resource.js';
export declare const binaryExtension: Record<string | number, number>;
/**
 * Return the extension of the path or the url,
 * from the last '.' to end of string in the last portion of the path.
 * If there is no '.' in the last portion of the path,
 * then it returns an empty string.
 *
 * @see path.extname
 * @param url the url to evaluate.
 */
export declare function lowerCaseExtension(url: string): string | void;
export declare function detectResourceType(url: string, type: ResourceType): ResourceType;
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