Why is the encoding crooked when compiling .js files?

Question

JavaScript

Hello!
There are a couple of packages that need to be built on Jenkins.
In package.json to compile this script: "rm -rf lib && mkdir lib && cp -a src/* lib/ && babel --optional runtime -d lib/ src/".
.babelrc:
{
"presets": ["react", "es2015", "stage-0"]
}
So, in lib, Russian words are transformed into "\u0412\u435..." and so on. ...
Any ideas?

Answer 1

this is the normal form of Cyrillic in JS/JSON

Answer 2

This is not a "curve encoding", these are Unicode codes.

Answer 3

This is unicode, everything is fine.