import { Action } from '../../Action';
import { EthAddress, uint256 } from '../../types';
/**
 * YearnSupplyAction - Supply token to a Yearn vault
 *
 * @category Yearn
 */
export declare class YearnSupplyAction extends Action {
    /**
     * @param tokenAddr token address
     * @param amount amount of tokens to supply
     * @param from Tokens will be supplied from this address
     * @param to yTokens will be sent to this address
     */
    constructor(tokenAddr: EthAddress, amount: uint256, from: EthAddress, to: EthAddress);
    getAssetsToApprove(): Promise<{
        asset: any;
        owner: any;
        specialApproveLabel: string;
    }[]>;
}