I try to call 

    web3.utils.sha3('234');

 on truffle console. However I got an error

    TypeError: Cannot read property 'sha3' of undefined
    at evalmachine.<anonymous>:1:11
    at ContextifyScript.Script.runInContext (vm.js:35:29)
    at Object.runInContext (vm.js:89:6)
    at Console.interpret (C:\Users\aa\AppData\Roaming\npm\node_modules\truffle\build\cli.bundled.js:202201:17)
    at ReplManager.interpret (C:\Users\aa\AppData\Roaming\npm\node_modules\truffle\build\cli.bundled.js:202917:18)
    at bound (domain.js:280:14)
    at REPLServer.runBound [as eval] (domain.js:293:12)
    at REPLServer.<anonymous> (repl.js:538:10)
    at emitOne (events.js:96:13)
    at REPLServer.emit (events.js:188:7)


Does this mean web3.utils.sha3 has not supported yet?