JavaScript

How To Fix ReferenceError: __dirname is not defined

How To Fix ReferenceError: __dirname is not defined

  • February 15, 2024

I recently tried to use __dirname inside a ES module. It turns out, that I cannot. It throws an error. So let us see how To Fix ReferenceError: __dirname is not defined. For people who do not know what it is, let us first discuss what __dirname is. __dirname is a global variable in Node.js...

How to detect caps lock with JavaScript

How to detect caps lock with JavaScript

  • February 11, 2024

The need to verify and notify the user if the Caps Lock key is on is fairly common. It is particularly significant when constructing password inputs because users do not realize they are typing with their caps lock on. Let us see how to detect caps lock with JavaScript to do...

Partial Matching in Jest

Partial Matching in Jest

  • October 25, 2023

Jest has the ability to check for partial matches on arrays and objects. Let us see how to do partial matching in Jest. expect has powerful matcher methods for partial matching, and they can also be combined with the tohavebeencalledwith method. Matching objects partially using expect.objectContaining When trying only to...

Fixing “error: cannot find module semver” error in Node.js

Fixing “error: cannot find module semver” error in Node.js

  • October 19, 2023

When installing a package using npm, you might encounter the “error: cannot find module semver” error. The error is caused because of a corrupted package-lock.json or yarn.lock. The most common reason for this is a change in the node version. Fixing “error: cannot find module semver” The fix is a...

Fix “Error:0308010C:digital envelope routines::unsupportedFixing” in Node.js

Fix “Error:0308010C:digital envelope routines::unsupportedFixing” in Node.js

  • October 17, 2023

Node 17 introduced OpenSSL v3.0, which brought in some breaking changes, and the “Error: error:0308010C:digital envelope routines::unsupported” is a result of one such change. It can be solved by passing in a “–openssl-legacy-provider” flag when running the application. Setting the NODE_OPTIONS environment variable We can set the environment variable that...