import ' rollup-plugin-inject-process-env';
export interface FieldValidatorResult {
    valid: boolean;
    message?: string;
}
export declare const validateEmail: (s: string) => FieldValidatorResult;
export declare const validatePhoneNumber: (s: string) => FieldValidatorResult;
export declare const validateZipCode: (s: string) => FieldValidatorResult;
export declare const isEmptyString: (s: string) => boolean;
export declare const formatUSPhoneNumber: (s: string) => string;
export declare const formatZipCode: (s: string) => string;
export declare const fieldErrorsEqual: (obj1: {
    [key: string]: FieldValidatorResult;
}, obj2: {
    [key: string]: FieldValidatorResult;
}) => boolean;
export declare const isEmpty: (obj: unknown) => boolean;