/**
 * Thrown when the SVM gas-price oracle cannot determine a base fee for the
 * supplied message — most commonly because Solana's `getFeeForMessage` RPC
 * returned `{ value: null }` even after retrying with a confirmed blockhash.
 *
 * Callers can use `instanceof` to map this to a transient upstream-RPC error
 * (e.g. HTTP 502 / 503) rather than treating it as an unhandled exception.
 */
export declare class SvmGasPriceUnavailableError extends Error {
    constructor(message: string, opts?: {
        cause?: unknown;
    });
}
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