Node Debugger Lab


  1. Use Node built-in debugger by putting statements into a given script to find a problem by using debugger
  2. Launch debugger
  3. Fix the script


You've been hired by a major national bank to fix some of their account creation code. Some bugs have crept into the code (as bugs are wont to do). Your job is to fix the issues and make the code functional again.

In this lab, you'll debug a Node script which has some issues.


  1. Open account.js then launch it from the command line with node account.
  2. Find the issues
  3. Put some debugger statements in account.js
  4. Launch in debug mode with node debug account
  5. Track the issues
  6. Fix the file. (Hint: there are 3 issues to fix.)
  7. Run test with npm test

Note: In order to debug the exported function in account.js, you'll need to call the function somewhere in that file. Simply add a call to account() at the bottom of the file and your break statements should work. Remove this call before running the tests.

The fixed script should output the following:

Account before opening:  { balance: 0, name: 'Azat Mardan', checking: '1' }
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Account after opening:  { balance: 1250,
  name: 'Azat Mardan',
  checking: '1',
  type: 'checking' }

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