I am new to CodeMirror and having difficulty getting it to work -- I am specifically looking to get it to work with Groovy.

The following are the steps I have taken:

1. Downloaded CodeMirror-master.zip
2. Unzipped it.
3. Attempted to open "CodeMirror-master/mode/groovy/index.html"

When I open that file, the Groovy code in that file is not formatted. That file references "lib/codemirror.js". The file structure in the zip file does not contain "codemirror.js" in the "lib" directory. However, it does contain "codemirror.js" in the "src" directory. So, I copied everything from the "src" directory to the "lib" directory and it still doesn't display the formatted code from the example. When I open the Chrome browser developer tools it shows 4 errors, but I am so new to this type of development that I don't know what to do. I don't understand why "CodeMirror is not defined" is being thrown -- I assumed that the example code from CodeMirror would work...

The errors I see are as follows:

1. Uncaught SyntaxError: Cannot use import statement outside a module (codemirror.js)
2. Uncaught ReferenceError: CodeMirror is not defined at matchbrackets.js:10:9 at matchbrackets.js:11:3
3. Uncaught ReferenceError: CodeMirror is not defined at groovy.js:10:9 at groovy.js:11:3
4. Uncaught ReferenceError: CodeMirror is not defined at index.html:76:20

What took me down the path of trying out the examples was that I was unable to get it running with my own code after trying to follow the instructions and I have been banging my head against this for too long.

Any help would be greatly appreciated.