This repo is meant for you to thoroughly review the Underbar functions you've examined so far.
- re-implement the Underbar module,
- including its tests,
- then use Underbar to make another utility module called Stringinator.
Stringinator is a small collection of string utilities.
Your job is to write the implementations of these utilities, making full use of the Underbar facilities.
Note that the jest-cli package was also installed into this repo, with the command:
npm install --save-dev jest-cli
This should allow you to use this syntax to just run one test file:
npm test countChars
That will do a partial match on the string and find the matching test and run it.
This can save you some time as you are writing the tests, as opposed to executing the entire test suite on every run.