interface VersionPath {
    path: string;
    type: string;
    version: string;
}
interface PackageInfo extends VersionPath {
    name: string;
}
type FnString = () => string | undefined;
export declare const POLKADOTJS_DISABLE_ESM_CJS_WARNING_FLAG = "POLKADOTJS_DISABLE_ESM_CJS_WARNING";
/**
 * @name detectPackage
 * @summary Checks that a specific package is only imported once
 * @description A `@polkadot/*` version detection utility, checking for one occurrence of a package in addition to checking for dependency versions.
 */
export declare function detectPackage({ name, path, type, version }: PackageInfo, pathOrFn?: FnString | string | false | null, deps?: PackageInfo[]): void;
export {};