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LP Zapper

Solidity smart contract that converts native gas token into some desired LP token (Uniswap v2). Sweeps left over funds and/or fees to developer wallet.

How it works

The contract trades the native token for the desired ERC20 token and a wrapped native token (WETH, or i.e. WMATIC). Users can then "zap" their native gas tokens into an LP token via the zap() function.

Contract does not define the LP address, instead parses it from the factory.

Dev address recieves fees and leftover tokens.

Development

The project is built with Hardhat & Ethers v5.

  1. Install dependencies
pnpm install
  1. Update the contract source code in contracts/
  • Zap.sol is The main contract that converts gas tokens into the target LP token.

Change the addresses for the target...:

  • DEX factory (the contract that creates the LP tokens)
  • DEX router (the contract that executes the trades)
  • WETH (the wrapped native token)
  • ERC20 (the desired project token to pair with)
  1. Compile the contracts
pnpm hardhat compile
  1. Run tests
pnpm test
  1. Deploy the contract
pnpm deploy

License

MIT