Page cover image

Developing on Ethereum L2s and EVM

We leverage the flexibility and power of Ethereum and apply it within DapDap's NEAR development ecosystem. This section is designed to facilitate Ethereum developers in seamlessly integrating, experimenting, and innovating with DapDap.

Interacting with Ethereum dApps

DapDap leverages an environment with NEAR JS where Ethereum dApps and smart contracts become more accessible. The NEAR VM has imported the Ethers.js library, allowing for seamless interaction with Ethereum nodes using JavaScript in a NEAR component.

The Ethers object exposes the provider connection:

  • Ethers.provider() is a read-only connection to the blockchain, which allows querying the blockchain state (e.g., account, block or transaction details), querying event logs or evaluating read-only code using call.

    • Ethers.provider().getSigner() abstracts the class that interacts with an account

      • Ethers.provider().getSigner().getBalance() returns a Promise that resolves to the account address.

    • Ethers.provider().getBlockNumber() looks up the current block number (i.e. height)

    • Ethers.provider().getFeeData() gets the best guess at the recommended FeeData

You can see various ways of using Ethers objects on the Ethers documentation portal).

Furthermore, numerous basic tools can be found in the ethers.utils object (be aware of the lowercase 'e').

  • ethers.utils.parseUnits(value, unit) converts the decimal string value to a BigInt, assuming unit decimal places. The unit may the number of decimal places or the name of a unit (e.g. "gwei" for 9 decimal places).

  • ethers.utils.formatEther(wei) converts value into a decimal string using 18 decimal places.

Example showing the difference between Ethers.provider() and ethers.utils:

    Ethers.provider()
        .getSigner()
        .getBalance()
        .then((balance) => {
            console.log("Your ETH balance: ", ethers.utils.formatEther(balance))
        });

Examples

Below is a curated list of NEAR components that could potentially be integrated into DapDap, developed by the community:

Last updated