cb is not defined

[relaxbao]

ethjs-query

Description

hello , when i use the eth.getBalance('0x04D43d123C04884177b55E4c70A50F348fE82df5',cb)
i get the following error , is there something wrong with my code ?

(node:15526) UnhandledPromiseRejectionWarning: ReferenceError: cb is not defined
    at getbalance (/home/linfang/workspace/uport/ethr-did/src/main.js:22:81)
    at Object.<anonymous> (/home/linfang/workspace/uport/ethr-did/src/main.js:26:1)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
(node:15526) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:15526) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

here is my code :

let HttpProvider = require('ethjs-provider-http')
const Eth = require('ethjs-query');

const provider = new HttpProvider('http://localhost:7545')
const eth = new Eth( new HttpProvider('http://localhost:7545'));

async function getbalance() {
  let value = await eth.getBalance('0x04D43d123C04884177b55E4c70A50F348fE82df5',cb)
  console.log(value)
}
getbalance()

when i changed the getBalsnce with removing the cb: eth.getBalance('0x04D43d123C04884177b55E4c70A50F348fE82df5',),

it returned

<BN: 56b060b1d14f70000>
(node:15984) [DEP0079] DeprecationWarning: Custom inspection function on Objects via .inspect() is deprecated

acctually, the balance of the account is 99.95 ETH

how can I get the right balance ?
thank you very much ~