import type { FormDescriptor, FormField, FormFieldIssue, FormValues, JsonValue } from '@funkit/connect-core';
export type KycFieldIssue = FormFieldIssue | 'DATE_UNDERAGE';
/**
 * The first refusal a field carries, or nothing.
 *
 * A field can hold the same issue under two validation causes at once (mount
 * and change both mark a blank required field); the row draws one colour, so
 * one is all it needs.
 */
export declare function firstIssue(errors: readonly unknown[] | undefined): KycFieldIssue | undefined;
/** Every control on this screen answers with text; anything else reads blank. */
export declare const stringValue: (value: JsonValue | undefined) => string;
/**
 * What the screen's form holds: one string per field.
 *
 * Flat on purpose. `JsonValue` is recursive, and TanStack derives its field
 * paths from the data type, so the recursion has no floor for the compiler to
 * stand on. Nothing here answers with anything but text anyway.
 */
export type KycFormValues = Record<string, string>;
/** The flow's values as the form takes them; anything not text reads blank. */
export declare function typedValues(values: FormValues): KycFormValues;
/**
 * The COUNTRY fields the buyer's region can answer for them: the blank ones.
 * A value they typed is theirs, whatever the lookup says.
 */
export declare function blankCountryFields(fields: readonly FormField[], values: FormValues): FormField[];
/**
 * The fields an earlier round in this session already answered: blank here,
 * non-blank there.
 *
 * Rails key their own records differently from ours — Stripe puts the name and
 * phone from `registerLinkUser` on the Link consumer account, not on the crypto
 * customer, so the identity round genuinely has to send the name again. That is
 * a reason to re-send it, not a reason to make the buyer retype it.
 */
export declare function carriedBlankFields(fields: readonly FormField[], values: FormValues, carried: FormValues): FormField[];
/** Every rail this form feeds requires an adult (design 2114:8361). */
export declare const MINIMUM_AGE_YEARS = 18;
/**
 * Whether a date of birth makes the buyer too young to continue.
 *
 * Only a well-formed past date is judged: a malformed one is connect-core's
 * `DATE_FORMAT`, and a future one its `DATE_FUTURE`, both worded more
 * precisely than "too young". Compared as UTC days so a clock behind UTC
 * cannot fail someone on their birthday.
 */
export declare function underageIssue(value: string, today?: Date): 'DATE_UNDERAGE' | undefined;
/** Keep every rule alive when its field's page is unmounted. */
export declare function validateKycForm(form: FormDescriptor, values: FormValues): Record<string, KycFieldIssue>;
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