export const constants = {
    address_zero: "0x0000000000000000000000000000000000000000",
    eth_addr: "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE",
    max_value: "115792089237316195423570985008687907853269984665640564039457584007913129639935"
  };