import BigNumber from 'bignumber.js';
import { TransactionConfig } from 'web3-core';
import { AbiItem } from 'web3-utils';
import { TransactionGasParams } from 'src/features/instant-trades/models/gas-params';
/**
 * Contains common methods, connected with web3, e.g. wei conversion, encoding data, etc.
 */
export declare class Web3Pure {
    static readonly ZERO_ADDRESS = "0x0000000000000000000000000000000000000000";
    private static web3Eth;
    /**
     * Gets address of native coin {@link NATIVE_TOKEN_ADDRESS}.
     */
    static get nativeTokenAddress(): string;
    static isZeroAddress(address: string): boolean;
    /**
     * Increases the gas limit value by the specified percentage and rounds to the nearest integer.
     * @param gasLimit Gas limit value to increase.
     * @param multiplier The multiplier by which the gas limit will be increased.
     */
    static calculateGasMargin(gasLimit: BigNumber | string | number | undefined, multiplier: number): BigNumber;
    /**
     * Converts amount from Ether to Wei units.
     * @param amount Amount to convert.
     * @param decimals Token decimals.
     * @param roundingMode BigNumberRoundingMode.
     */
    static toWei(amount: BigNumber | string | number, decimals?: number, roundingMode?: BigNumber.RoundingMode): string;
    /**
     * Converts amount from Wei to Ether units.
     * @param amountInWei Amount to convert.
     * @param decimals Token decimals.
     */
    static fromWei(amountInWei: BigNumber | string | number, decimals?: number): BigNumber;
    /**
     * Converts address to bytes32 format.
     * @param address Address to convert.
     */
    static addressToBytes32(address: string): string;
    /**
     * Converts address to checksum format.
     * @param address Address to convert.
     */
    static toChecksumAddress(address: string): string;
    /**
     * Checks if a given address is a valid Ethereum address.
     * @param address The address to check validity of.
     */
    static isAddressCorrect(address: string): boolean;
    /**
     * Checks if address is Ether native address.
     * @param address Address to check.
     */
    static isNativeAddress: (address: string) => boolean;
    /**
     * Returns transaction config with encoded data.
     */
    static encodeMethodCall(contractAddress: string, contractAbi: AbiItem[], method: string, parameters?: unknown[], value?: string, options?: TransactionGasParams): TransactionConfig;
    /**
     * Encodes a function call using its JSON interface object and given parameters.
     * @param contractAbi The JSON interface object of a function.
     * @param methodName Method name to encode.
     * @param methodArguments Parameters to encode.
     * @returns An ABI encoded function call. Means function signature + parameters.
     */
    static encodeFunctionCall(contractAbi: AbiItem[], methodName: string, methodArguments: unknown[]): string;
    /**
     * Converts ascii address to bytes32 format.
     * @param address Address to convert.
     */
    static asciiToBytes32(address: string): string;
}