Some modules rely on `ace.require`, which seems to have its own internal locate/fetch algorithm and doesn't match `cjs`'s `require`. For example, `ace.require('ace/ext/themelist').themesByName` seems to fetch the file `ace/ext-themelist`, and one might think the equivalent `cjs` line would be `require('ace/ext-themelist').themesByName`, but by that method, `themesByName` is `undefined`. And even after determining the equivalent `cjs` statement, there will likely be at least a dozen or more others like it, so it's easiest to just use the `noconflict` version.
