I checked has-ansi. What's the reason that this library would exist and be popular? Most of the work is done by the library it imports, ansi-regex and then it just return ansi-regex.test(string), yet it has 5% of the weekly downloads of ansi-regex. ansi-regex also has fewer than 10 lines of code.

I don't know anything about the npm ecosystem, what's the benefit of importing these libraries compared to including these code in the project?

The benefit is getting your secrets stolen and pointing the blame at someone else? Yeah...