import type { GasWithToken, NetworkRoute, Token, TokenBalance } from '@layerswap/widget-types';
export type AmountPreset = 'min' | 'half' | 'max';
export type AmountMode = 'manual' | 'fixed' | AmountPreset;
export declare function isWalletAmountFlow(values: {
    depositMethod?: string;
    fromExchange?: unknown;
}): boolean;
export declare function isAmountPreset(mode: string | undefined): mode is AmountPreset;
/** Bundled adapter capability gaps, not a fallback for transient RPC failures.
 * These routes retain quick fills until balance/fee estimation is supported. */
export declare function supportsLiveAmountPreset(network: NetworkRoute, token: Token): boolean;
export declare function amountPresetSource(network?: string, token?: string, accountId?: string, address?: string): string;
export declare class AmountPresetChangedError extends Error {
    constructor();
}
export declare class AmountPresetUnavailableError extends Error {
    amount?: string | undefined;
    constructor(message: string, amount?: string | undefined);
}
export declare function resolvePresetAmount(mode: AmountPreset, spendable: number, minimum: number, decimals: number): string;
/** Estimate the preset at its actual transfer amount, then verify affordability.
 * The gas buffer absorbs small RPC movements; large changes have bounded retries. */
export declare function calculatePresetAmount({ network, token, balance, limit, minimum, mode, probeAmount, preserveAmount, estimateGas }: {
    network: NetworkRoute;
    token: Token;
    balance: TokenBalance | undefined;
    limit: number | undefined;
    minimum?: number;
    mode?: AmountPreset;
    probeAmount?: string;
    /** At confirmation, keep the reviewed amount if it still fits this preset's bounds. */
    preserveAmount?: boolean;
    estimateGas: (amount: number) => Promise<GasWithToken | undefined>;
}): Promise<string>;
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