/**
 * Pure helpers shared between `<OTPField.Root>` and `<OTPField.Input>`. These
 * mirror Base UI React's `packages/react/src/otp-field/utils/otp.ts`
 * one-for-one — they are plain, non-reactive functions, safe to call from any
 * scope.
 */
interface OTPValidationConfig {
    slotPattern: string;
    getRootPattern: (length: number) => string;
    regexp: RegExp;
    inputMode: "numeric" | "text";
}
export type OTPValidationType = "numeric" | "alpha" | "alphanumeric" | "none";
export declare function getOTPValidationConfig(validationType: OTPValidationType): OTPValidationConfig | null;
export declare function stripOTPWhitespace(value: string | null | undefined): string;
/**
 * Normalize user-entered OTP text by stripping whitespace, applying validation
 * or custom sanitization, then clamping the final value to the configured slot
 * count. Slicing uses `Array.from` so multi-byte characters stay atomic.
 */
export declare function normalizeOTPValue(value: string | null | undefined, length: number, validationType: OTPValidationType, sanitizeValue?: ((value: string) => string) | undefined): string;
/**
 * Replace characters starting at the provided slot index, then re-normalize
 * the result. Used by typing / paste flows where a multi-character edit must
 * stay contiguous and length-bounded.
 */
export declare function replaceOTPValue(currentValue: string, index: number, nextValue: string, length: number, validationType: OTPValidationType, sanitizeValue?: ((value: string) => string) | undefined): string;
export declare function removeOTPCharacter(currentValue: string, index: number): string;
export {};
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