export declare function error(msg: string): Error;
export declare function errorFmt<F extends (...params: any[]) => Error>(template: string): F;
export declare const errorInvalid: (obj: any, what: string) => Error;
export declare const errorInvalidType: (obj: any, what: string) => Error;
export declare const errorNotInEnv: (id: string) => Error;
export declare const errorExpReq: (key: string, type: string) => Error;
export declare const errorStmnReq: (key: string, type: string) => Error;