let sepolia: {
readonly blockExplorers?: Array<{
apiUrl?: string;
name: string;
url: string;
}>;
readonly experimental?: { increaseZeroByteCount?: boolean };
readonly icon?: Icon;
readonly id: number;
readonly name?: string;
readonly nativeCurrency?: {
decimals?: number;
name?: string;
symbol?: string;
};
readonly rpc: string;
readonly testnet?: true;
};