Error: Cannot find module 'power-assert'

[thetittenquetscher]

I got stuck at number 5 (How to run tests)

**5. In another terminal, run the unit tests from the root of the project :**

I am assuming that the root of the project refers to the Google Cloud Storage project folder storage in nodejs-docs-samples.

• Users/me/Downloads/nodejs-docs-samples/storage
• npm install in the directory above
• npm test
• npm test leads to this error (Error: Cannot find module ‘intelli-espower-loader’):

> nodejs-docs-samples-storage@0.0.1 test /Users/me/Downloads/nodejs-docs-samples/storage
> mocha -R spec -t 120000 --require intelli-espower-loader ../test/_setup.js test/*.test.js

module.js:327
    throw err;
    ^

Error: Cannot find module 'intelli-espower-loader'
    at Function.Module._resolveFilename (module.js:325:15)
    at Function.Module._load (module.js:276:25)
    at Module.require (module.js:353:17)
    at require (internal/module.js:12:17)
    at /Users/me/Downloads/nodejs-docs-samples/storage/node_modules/mocha/bin/_mocha:344:3
    at Array.forEach (native)
    at Object.<anonymous> (/Users/me/Downloads/nodejs-docs-samples/storage/node_modules/mocha/bin/_mocha:343:10)
    at Module._compile (module.js:409:26)
    at Object.Module._extensions..js (module.js:416:10)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Function.Module.runMain (module.js:441:10)
    at startup (node.js:139:18)
    at node.js:974:3
npm ERR! Test failed.  See above for more details.

So this page here https://github.com/power-assert-js/intelli-espower-loader
provides the missing module including the module power-assert :

• npm install intelli-espower-loader --save-dev
• npm install power-assert --save-dev
• I run npm test again

Although I installed the module power-asset along with intelli-espower-loader earlier, terminal throws me the (Error: Cannot find module ‘power-asset’) again when running npm test :

> nodejs-docs-samples-storage@0.0.1 test /Users/me/Downloads/nodejs-docs-samples/storage
> mocha -R spec -t 120000 ../test/_setup.js test/*.test.js

module.js:327
    throw err;
    ^

Error: Cannot find module 'power-assert'
    at Function.Module._resolveFilename (module.js:325:15)
    at Function.Module._load (module.js:276:25)
    at Module.require (module.js:353:17)
    at require (internal/module.js:12:17)
    at Object.<anonymous> (/Users/me/Downloads/nodejs-docs-samples/test/_setup.js:16:14)
    at Module._compile (module.js:409:26)
    at Object.Module._extensions..js (module.js:416:10)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Module.require (module.js:353:17)
    at require (internal/module.js:12:17)
    at /Users/me/Downloads/nodejs-docs-samples/storage/node_modules/mocha/lib/mocha.js:222:27
    at Array.forEach (native)
    at Mocha.loadFiles (/Users/me/Downloads/nodejs-docs-samples/storage/node_modules/mocha/lib/mocha.js:219:14)
    at Mocha.run (/Users/me/Downloads/nodejs-docs-samples/storage/node_modules/mocha/lib/mocha.js:487:10)
    at Object.<anonymous> (/Users/me/Downloads/nodejs-docs-samples/storage/node_modules/mocha/bin/_mocha:458:18)
    at Module._compile (module.js:409:26)
    at Object.Module._extensions..js (module.js:416:10)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Function.Module.runMain (module.js:441:10)
    at startup (node.js:139:18)
    at node.js:974:3
npm ERR! Test failed.  See above for more details.

My attempts to uninstall and reinstall the power-assert module failed :

https://docs.npmjs.com/cli/uninstall

Also doing the commands in the storage folder suggested here did not work for me :

http://stackoverflow.com/questions/9023672/nodejs-how-to-resolve-cannot-find-module-error

• rm -rf node_modules
• npm install

My package.json in the storage folder looks like this:

    {
  "name": "nodejs-docs-samples-storage",
  "version": "0.0.1",
  "private": true,
  "license": "Apache Version 2.0",
  "author": "Google Inc.",
  "scripts": {
    "test": "mocha -R spec -t 120000 ../test/_setup.js test/*.test.js",
    "system-test": "mocha -R spec -t 120000 ../system-test/_setup.js system-test/*.test.js"
  },

  "dependencies": {
    "@google-cloud/storage": "^0.2.0",
    "googleapis": "^13.0.0",
    "moment": "^2.15.1",
    "yargs": "^6.0.0"
  },
  "devDependencies": {
    "babel-preset-power-assert": "^1.0.0",
    "intelli-espower-loader": "^1.0.1",
    "mocha": "^3.1.0",
    "node-uuid": "^1.4.7",
    "power-assert": "^1.4.1"
  },
  "engines": {
    "node": ">=4.3.2"
  }
}

Why does NPM not find the module power-assert which is installed and present in the node_modules file of the storage folder?

Am I pointing to the right directory, anyway?

I am thankful for any hints.