import { AccountInfo, Finality, GetProgramAccountsConfig, PublicKey, SignaturesForAddressOptions, VersionedTransaction, VersionedTransactionResponse } from "@solana/web3.js";
export declare function isHeliusRpc(rpcUrl: string): boolean;
export declare function getHeliusApiKey(): string | undefined;
export declare function getHeliusRpcUrl(apiKey?: string): string;
export type HeliusFetchOptions = {
    rpcUrl?: string;
    apiKey?: string;
};
export declare function heliusFetch<T = any>(method: string, params: unknown, options?: HeliusFetchOptions): Promise<T>;
export type HeliusAsset = {
    id: string;
    content?: {
        metadata?: {
            name?: string;
            symbol?: string;
        };
        links?: {
            image?: string;
        };
    };
    token_info?: {
        symbol?: string;
        decimals?: number;
    };
};
export declare function getAsset(mint: string, options?: HeliusFetchOptions): Promise<HeliusAsset | null>;
export type HeliusTokenAccount = {
    address: string;
    owner: string;
    mint: string;
    amount: string | number;
    delegated_amount?: string | number;
    frozen?: boolean;
};
export type GetTokenAccountsByMintOptions = HeliusFetchOptions & {
    showZeroBalance?: boolean;
    limit?: number;
};
export type HeliusTokenAccountsByMintResult = {
    token_accounts: HeliusTokenAccount[];
    total?: number;
};
export declare function getTokenAccountsByMintResult(mint: PublicKey | string, options?: GetTokenAccountsByMintOptions): Promise<HeliusTokenAccountsByMintResult>;
export declare function getTokenAccountsByMint(mint: PublicKey | string, options?: GetTokenAccountsByMintOptions): Promise<HeliusTokenAccount[]>;
export type PriorityLevel = "Recommended" | "Min" | "Low" | "Medium" | "High" | "VeryHigh" | "UnsafeMax" | "Default";
export type GetPriorityFeeEstimateOptions = {
    heliusApiKey?: string;
    tx?: VersionedTransaction;
    accountKeys?: string[];
    priorityLevel?: PriorityLevel;
};
export declare function getPriorityFeeEstimate(options: GetPriorityFeeEstimateOptions): Promise<number>;
export interface GetTransactionsOptions {
    commitment?: Finality;
    sinceSlot?: number;
    transactionDetails?: "full" | "signatures";
}
export declare function heliusGetTransactionsForAddress(rpcUrl: string, address: PublicKey, options?: SignaturesForAddressOptions & GetTransactionsOptions): Promise<(VersionedTransactionResponse | null)[]>;
export type HeliusGetProgramAccountsV2Config = {
    limit?: number;
    changedSinceSlot?: number;
};
export declare function heliusGetProgramAccountsV2(rpcUrl: string, programId: PublicKey, config: GetProgramAccountsConfig & HeliusGetProgramAccountsV2Config): Promise<{
    pubkey: PublicKey;
    account: AccountInfo<Buffer>;
}[]>;