web3-utils#asciiToHex TypeScript Examples

The following examples show how to use web3-utils#asciiToHex. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: contractWrappers.ts    From webapp with MIT License 5 votes vote down vote up 
fetchContractAddresses = async (
  contractRegistry: string
): Promise<RegisteredContracts> => {
  if (!contractRegistry || !web3.utils.isAddress(contractRegistry))
    throw new Error("Must pass valid address");

  // @ts-ignore
  const ethMulti = new MultiCall(web3);

  const hardCodedBytes: RegisteredContracts = {
    BancorNetwork: asciiToHex("BancorNetwork"),
    BancorConverterRegistry: asciiToHex("BancorConverterRegistry"),
    LiquidityProtectionStore: asciiToHex("LiquidityProtectionStore"),
    LiquidityProtection: asciiToHex("LiquidityProtection"),
    StakingRewards: asciiToHex("StakingRewards")
  };

  const hardCodedShape = (
    contractAddress: string,
    label: string,
    ascii: string
  ) => {
    const contract = buildAddressLookupContract(contractAddress);
    return {
      [label]: contract.methods.addressOf(ascii)
    };
  };

  const arrBytes = toPairs(hardCodedBytes) as [string, string][];

  try {
    const hardCodedShapes = arrBytes.map(([label, ascii]) =>
      hardCodedShape(contractRegistry, label, ascii)
    );
    const [contractAddresses] = await ethMulti.all([hardCodedShapes]);

    const registeredContracts = Object.assign(
      {},
      ...contractAddresses
    ) as RegisteredContracts;
    const allUndefined = toPairs(registeredContracts).some(
      ([key, data]) => data == undefined
    );
    if (allUndefined) throw new Error("All requests returned undefined");

    return registeredContracts;
  } catch (e) {
    throw new Error(e.message);
  }
}