I'm building a little tool to create a source code file.

The tool iterates through a directory, gets all *.js files and reads them all to an array. For example React (https://unpkg.com/react@18/umd/react.production.min.js).

Reading File > save to variable
Write variable to file > e.g. `const myVariable = `${fileContent}`;`

This alone obviously doesn't work. I have to replace line breaks etc.

e.g:

content.replace(/(?:\r\n|\r|\n)/g, "");

And that's the problem. Replacing special characters results in unexpected behavior (syntax errors of the final JavaScript).

Question: How to replace special characters properly?