console.log

let address = "0xed6367b2b7e1f0a33cecd2d3b56fc6667a14e4a9"
let abi = [
       {
         "inputs": [],
         "payable": false,
         "stateMutability": "nonpayable",
         "type": "constructor"
       },
       {
         "anonymous": false,
         "inputs": [
           {
             "indexed": false,
             "name": "truite",
             "type": "uint32"
           }
         ],
         "name": "TruiteFired",
         "type": "event"
       },
       {
         "constant": false,
         "inputs": [],
         "name": "emitTruite",
         "outputs": [],
         "payable": false,
         "stateMutability": "nonpayable",
         "type": "function"
       }
     ]
web3.version
let contract = web3.eth.contract(abi)
let instance = contract.at(address)
instance.emitTruite(console.log)