import type { CurrencyConfig } from '../config';
import type { CoinModuleImpl, OptionalApiKey } from './impl';
import type { CoinModuleApi, Memo, MemoNotSupported, TxData, TxDataNotSupported } from './types';
/**
 * What {@link withDefaults} returns: the full consumer contract, plus `supports()`.
 *
 * `getAccountInfo` is narrowed to required. It is the one managed capability that
 * {@link CoinModuleApi} itself declares optional, and `withDefaults` always supplies it — so
 * callers can invoke it without a non-null assertion, and read `type` to tell a real answer from
 * the `{ type: 'none' }` sentinel.
 */
export type WithDefaultsResult<ConfigType extends CurrencyConfig, MemoType extends Memo = MemoNotSupported, TxDataType extends TxData = TxDataNotSupported> = CoinModuleApi<ConfigType, MemoType, TxDataType> & Required<Pick<CoinModuleApi<ConfigType, MemoType, TxDataType>, 'getAccountInfo'>> & {
    supports: (method: OptionalApiKey) => boolean;
};
/**
 * Widens a {@link CoinModuleImpl} authoring value to the full {@link CoinModuleApi}
 * consumer contract by backfilling the capability methods the author omitted, and attaches
 * a `supports()` introspection helper.
 *
 * Default per omitted method:
 *   - `getAccountInfo` → a `{ type: 'none' }` sentinel (ADR-045): having no extra account
 *     metadata is an answer, so callers get one instead of an exception.
 *   - every other capability → `notSupported(name)`, which throws `"<name> is not supported"`.
 *
 * Properties the authoring object carries beyond the API surface are preserved.
 *
 * A capability method is considered implemented only when the author supplied a real
 * function — a `notSupported()` stub is treated as if the method had been omitted.
 */
export declare function withDefaults<ConfigType extends CurrencyConfig, MemoType extends Memo = MemoNotSupported, TxDataType extends TxData = TxDataNotSupported, Extra extends object = Record<never, never>>(impl: CoinModuleImpl<ConfigType, MemoType, TxDataType> & Extra): WithDefaultsResult<ConfigType, MemoType, TxDataType> & Extra;
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