/**
 * Exapmle:
 * isSurge('Surge iOS/2920')
 * isSurge('Surge/1129 CFNetwork/1335.0.3.2 Darwin/21.6.0')
 */
export declare const isSurgeIOS: (ua: string | undefined, version?: string) => boolean;
/**
 * Exapmle:
 * isSurge('Surge Mac/2408')
 */
export declare const isSurgeMac: (ua: string | undefined, version?: string) => boolean;
export declare const isClash: (ua: string | undefined, version?: string) => boolean;
export declare const isClashVerge: (ua: string | undefined, version?: string) => boolean;
export declare const isClashMetaForAndroid: (ua: string | undefined, version?: string) => boolean;
export declare const isStash: (ua: string | undefined, version?: string) => boolean;
export declare const isQuantumultX: (ua: string | undefined, version?: string) => boolean;
export declare const isShadowrocket: (ua: string | undefined, version?: string) => boolean;
export declare const isLoon: (ua: string | undefined, version?: string) => boolean;