https://medium.freecodecamp.org/mind-your-programming-language-38e340a430a1

Github aims to detect and display the main programming language of your project repos using its Linguist library. However, it sometimes reports a different code type for the project. This post will show you how to take control of this.

One of the consequences can sometimes be that the largest code type can be reported based on imported libraries, or files that support the app but do not contain the most significant logic.