1 line
4.5 KiB
JavaScript
1 line
4.5 KiB
JavaScript
!function(EXPORTS){if(!window.ethers)return console.error("ethers.js not found");const ethOperator=EXPORTS,isValidAddress=ethOperator.isValidAddress=address=>{try{const isValidChecksum=ethers.utils.isAddress(address),isValidNonChecksum=ethers.utils.getAddress(address)===address.toLowerCase();return isValidChecksum||isValidNonChecksum}catch(error){return!1}},ERC20ABI=[{constant:!0,inputs:[],name:"name",outputs:[{name:"",type:"string"}],payable:!1,stateMutability:"view",type:"function"},{constant:!1,inputs:[{name:"_spender",type:"address"},{name:"_value",type:"uint256"}],name:"approve",outputs:[{name:"",type:"bool"}],payable:!1,stateMutability:"nonpayable",type:"function"},{constant:!0,inputs:[],name:"totalSupply",outputs:[{name:"",type:"uint256"}],payable:!1,stateMutability:"view",type:"function"},{constant:!1,inputs:[{name:"_from",type:"address"},{name:"_to",type:"address"},{name:"_value",type:"uint256"}],name:"transferFrom",outputs:[{name:"",type:"bool"}],payable:!1,stateMutability:"nonpayable",type:"function"},{constant:!0,inputs:[],name:"decimals",outputs:[{name:"",type:"uint8"}],payable:!1,stateMutability:"view",type:"function"},{constant:!0,inputs:[{name:"_owner",type:"address"}],name:"balanceOf",outputs:[{name:"balance",type:"uint256"}],payable:!1,stateMutability:"view",type:"function"},{constant:!0,inputs:[],name:"symbol",outputs:[{name:"",type:"string"}],payable:!1,stateMutability:"view",type:"function"},{constant:!1,inputs:[{name:"_to",type:"address"},{name:"_value",type:"uint256"}],name:"transfer",outputs:[{name:"",type:"bool"}],payable:!1,stateMutability:"nonpayable",type:"function"},{constant:!0,inputs:[{name:"_owner",type:"address"},{name:"_spender",type:"address"}],name:"allowance",outputs:[{name:"",type:"uint256"}],payable:!1,stateMutability:"view",type:"function"},{payable:!0,stateMutability:"payable",type:"fallback"},{anonymous:!1,inputs:[{indexed:!0,name:"owner",type:"address"},{indexed:!0,name:"spender",type:"address"},{indexed:!1,name:"value",type:"uint256"}],name:"Approval",type:"event"},{anonymous:!1,inputs:[{indexed:!0,name:"from",type:"address"},{indexed:!0,name:"to",type:"address"},{indexed:!1,name:"value",type:"uint256"}],name:"Transfer",type:"event"}],CONTRACT_ADDRESSES={usdc:"0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",usdt:"0xdac17f958d2ee523a2206206994597c13d831ec7"};function getProvider(){return window.ethereum?new ethers.providers.Web3Provider(window.ethereum):new ethers.providers.JsonRpcProvider("https://mainnet.infura.io/v3/6e12fee52bdd48208f0d82fb345bcb3c")}ethOperator.getBalance=async address=>{try{if(!address||!isValidAddress(address))return new Error("Invalid address");const provider=getProvider(),balanceWei=await provider.getBalance(address);return parseFloat(ethers.utils.formatEther(balanceWei))}catch(error){return console.error("Error:",error.message),error}},ethOperator.getTokenBalance=async(address,token,{contractAddress:contractAddress}={})=>{try{if(!token)return new Error("Token not specified");if(!CONTRACT_ADDRESSES[token]&&contractAddress)return new Error("Contract address of token not available");const usdcContract=new ethers.Contract(CONTRACT_ADDRESSES[token]||contractAddress,ERC20ABI,getProvider());let balance=await usdcContract.balanceOf(address);return balance=parseFloat(ethers.utils.formatUnits(balance,6)),balance}catch(e){console.error(e)}};const estimateGas=ethOperator.estimateGas=async({privateKey:privateKey,receiver:receiver,amount:amount})=>{try{const provider=getProvider(),signer=new ethers.Wallet(privateKey,provider);return provider.estimateGas({from:signer.address,to:receiver,value:ethers.utils.parseUnits(amount,"ether")})}catch(e){throw new Error(e)}};ethOperator.sendTransaction=async({privateKey:privateKey,receiver:receiver,amount:amount})=>{try{const provider=getProvider(),signer=new ethers.Wallet(privateKey,provider),limit=await estimateGas({privateKey:privateKey,receiver:receiver,amount:amount});return signer.sendTransaction({to:receiver,value:ethers.utils.parseUnits(amount,"ether"),gasLimit:limit,nonce:signer.getTransactionCount(),maxPriorityFeePerGas:ethers.utils.parseUnits("2","gwei")})}catch(e){throw new Error(e)}},ethOperator.sendToken=async({token:token,privateKey:privateKey,amount:amount,receiver:receiver,contractAddress:contractAddress})=>{const wallet=new ethers.Wallet(privateKey,getProvider()),tokenContract=new ethers.Contract(CONTRACT_ADDRESSES[token]||contractAddress,ERC20ABI,wallet),amountWei=ethers.utils.parseUnits(amount.toString(),6);return tokenContract.transfer(receiver,amountWei)}}("object"==typeof module?module.exports:window.ethOperator={}); |