interface TypeMap {
    string: string;
    number: number;
    bigint: bigint;
    boolean: boolean;
    object: object;
    symbol: symbol;
    undefined: undefined;
}
export declare function isType<T extends keyof TypeMap>(type: T): (v: unknown) => v is TypeMap[T];
export declare function isKeyOfConstObject<T extends object>(key: string | number | symbol, obj: T): key is keyof T;
export declare function assertTypeExhausted(v: never): never;
export declare function strCamelCaseToSnakeCase(str: string): string;
export declare function strReverse(str: string): string;
export declare function strTrimRight(str: string, char: string): string;
export {};
//# sourceMappingURL=std.d.ts.map