import type { TemplateResult } from 'lit';
export declare const specialCharPattern: RegExp;
export declare const normalCharPattern: RegExp;
export declare const maskOptions: {
    readonly allChar: "_";
    readonly numericChar: "#dDmMyYaA09";
    readonly alphaChar: "?LaA";
};
export declare function stripSpecialChars(word: string): string;
export declare function rawValueToMaskedValue(rawValue: string, mask: string): string;
export declare function maskedValueToRawValue(value: string, mask: string): string;
export declare function buildValidityState(inputValidity: ValidityState, patternMatch: boolean | undefined): ValidityState;
export declare function renderMaskOverlay(maskedValue: string, fullPlaceholder: string, cssPrefix: string): TemplateResult;
export declare const IBANTestValues: string[];
export declare const BICTestValues: string[];
export declare const NIRTestValues: string[];