export declare const isObject: (obj: unknown) => obj is Record<string, unknown>;
export declare const strictDeepEqual: (first: unknown, second: unknown) => boolean;
export declare const isFalse: (obj: unknown) => boolean;
export declare const isAlpha: (ch: string) => boolean;
export declare const isNum: (ch: string) => boolean;
export declare const isAlphaNum: (ch: string) => boolean;