Truffle migrate shows Error Cannot find module truffle-expect

Question

I face no problem while compiling the contract. But when I migrate it, I get below error:

Error: Cannot find module 'truffle-expect'
    at Function.Module._resolveFilename (module.js:470:15)
    at Function.Module._load (module.js:418:25)
    at Module.require (module.js:498:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:85773:14)
    at __webpack_require__ (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:21:30)
    at Object.<anonymous> (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:59914:15)
    at __webpack_require__ (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:21:30)
    at Object.<anonymous> (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:201851:15)
    at __webpack_require__ (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:21:30)

Smart Contract:

pragma solidity^0.4.11;
contract HelloWorld {
    uint public balance;
    function HelloWorld(){
        balance = 1000;
    }
}

2_deploy_contract.js

var HelloWorld = artifacts.require("./HelloWorld.sol");
module.exports = function(deployer) {
  deployer.deploy(HelloWorld);
};

Answer 1

As mentioned in the error: truffle-expect is missing. Install this:

npm install -g truffle-expect truffle-config web3

Now start testrpc on another terminal and then try migrating.

Answer 2

You can also install the basic truffle-expect using the following command:

$ ​npm install -g truffle-expect