Skip to main content
Version: Endpoint V2 Docs

LayerZero Experimental Simple Config Generator

We have developed a new simple config generator which makes use of the metadata-tools package. It is currently in the experimental stage. It allows for a more simplified Layerzero config file.

Here's how to use it:

  1. Install metadata-tools: pnpm add -D @layerzerolabs/metadata-tools

  2. Create a new file named layerzero.simple.config.ts in the project root and use the examples below as a starting point:

    import {ExecutorOptionType} from '@layerzerolabs/lz-v2-utilities';
    import {OAppEnforcedOption, OmniPointHardhat} from '@layerzerolabs/toolbox-hardhat';
    import {EndpointId} from '@layerzerolabs/lz-definitions';
    import {generateConnectionsConfig} from '@layerzerolabs/metadata-tools';

    const avalancheContract: OmniPointHardhat = {
      eid: EndpointId.AVALANCHE_V2_TESTNET,
      contractName: 'MyOFT',
    };

    const polygonContract: OmniPointHardhat = {
      eid: EndpointId.AMOY_V2_TESTNET,
      contractName: 'MyOFT',
    };

    const EVM_ENFORCED_OPTIONS: OAppEnforcedOption[] = [
      {
        msgType: 1,
        optionType: ExecutorOptionType.LZ_RECEIVE,
        gas: 80000,
        value: 0,
      },
      {
        msgType: 2,
        optionType: ExecutorOptionType.LZ_RECEIVE,
        gas: 80000,
        value: 0,
      },
      {
        msgType: 2,
        optionType: ExecutorOptionType.COMPOSE,
        index: 0,
        gas: 80000,
        value: 0,
      },
    ];

    export default async function () {
      const connections = await generateConnectionsConfig([
        [
          avalancheContract, // srcContract
          polygonContract, // dstContract
          [['LayerZero Labs'], []], // [ requiredDVN[], [ optionalDVN[], threshold ] ]
          [1, 1], // [srcToDstConfirmations, dstToSrcConfirmations]
          [EVM_ENFORCED_OPTIONS, EVM_ENFORCED_OPTIONS], // [enforcedOptionsSrcToDst, enforcedOptionsDstToSrc]
        ],
      ]);

      return {
        contracts: [{contract: avalancheContract}, {contract: polygonContract}],
        connections,
      };
    }

    Note that only Solana contract object require address to be specified.

  3. Run the wire command:

npx hardhat lz:oapp:wire --oapp-config layerzero.simple.config.ts