I'm creating a product with an editor.

I'm interested to know whether you evaluated alternatives such as Monaco by Microsoft/VSCode? From my research it seems to be the one that's "ahead" by whatever metrics you'd go off other than age.

I'm interested to know what challenges you faced if any as well? Thanks!

Monaco doesn't work on mobile, if you care about this.

Interesting. What do you mean by "doesn't work"?

Not responsive? Bad touch controls?

Codemirror is different?

Monaco does not support mobile (touch) use, but CodeMirror does actively maintain mobile (touch) support. https://github.com/microsoft/monaco-editor/issues/246