Importance of JavaScript Test Coverage using Istanbul

<p>Imagine you started working in a massive codebase. How confident would you be about changing a single line of code without it breaking any other lines? Probably not confident at all. Now, if this codebase has tests that all pass with your code change you would probably feel a little better. However, it only takes a single line of code to crash the application. Do we know that those existing tests run every line your code might affect? It happens all the time in the software development world where tested code still crashes in production because the tests only cover parts of the code or only some cases.</p> <p><a href="https://medium.com/@annamorozova_92028/importance-of-javascript-test-coverage-using-istanbul-6974123d3fa7"><strong>Click Here</strong></a></p>