export interface OnrampOptions {
    /** Asset to buy. Default 'USDC'. */
    asset?: 'SOL' | 'USDC';
    /**
     * @deprecated Ignored. Onramp always funds the signed-in user's own embedded
     * wallet; a caller-supplied destination is dropped server-side (DS2-0076).
     */
    address?: string;
    /** Exact fiat amount in USD ($2-$25,000). Mutually exclusive with minAmountOut. */
    amountUsd?: number;
    /** Floor on crypto received (see module docs). Mutually exclusive with amountUsd. */
    minAmountOut?: number;
    /** Upward fiat padding for minAmountOut, 0-0.1. Default 0.01 (1%). */
    slippagePad?: number;
    /** Open in a new tab instead of a popup window. */
    newTab?: boolean;
    width?: number;
    height?: number;
    /** How long to keep verifying completion after the window closes (ms, default 24000). */
    completionTimeoutMs?: number;
}
export interface OnrampQuoteInfo {
    quoteId: string;
    /** Fiat the user pays (fees included) under the quoted payment method. */
    amountUsd: number;
    /** Crypto the pinned quote delivers. */
    quotedOut: number;
    coinbaseFee: number;
    networkFee: number;
    /** The payment method the quote assumed (the worst-fee tier, e.g. CARD). */
    paymentMethod: string;
}
export interface OnrampResult {
    /**
     * 'completed' - Coinbase reported a successful purchase (actualOut/txHash set).
     * 'closed'    - the window closed and no completed purchase was observed
     *               within the verification window (abandoned, or still settling -
     *               call onrampStatus() later to re-check).
     * 'opened'    - a new TAB was opened (tab close is not observable; verify
     *               later via onrampStatus()).
     */
    status: 'completed' | 'closed' | 'opened';
    /** The destination wallet the session was minted for. */
    address: string;
    asset: 'SOL' | 'USDC';
    /** The pinned quote, when one was requested (amountUsd or minAmountOut). */
    quote?: OnrampQuoteInfo;
    /** Actual crypto received, when status is 'completed'. */
    actualOut?: number;
    txHash?: string;
}
export interface OnrampTransaction {
    status: string;
    createdAt: string;
    asset: string | null;
    amountOut: number | null;
    txHash: string | null;
}
/**
 * Preview a quote (fees + exact/floor output) WITHOUT opening any window or
 * consuming a session. Show this to the user, then call onramp() to check out.
 */
export declare function onrampQuote(options?: OnrampOptions): Promise<{
    quote: OnrampQuoteInfo;
    address: string;
    asset: 'SOL' | 'USDC';
}>;
/** The signed-in user's recent onramp transactions (newest first). */
export declare function onrampStatus(sinceMs?: number): Promise<OnrampTransaction[]>;
/**
 * Open Coinbase Onramp for the signed-in user. Resolves after the window
 * closes, with completion VERIFIED against Coinbase when possible.
 * Call from a click handler - popup blockers require user activation.
 */
export declare function onramp(options?: OnrampOptions): Promise<OnrampResult>;