I don't know about the performance but web is THE most capable platform that itself is cross platform.
As for performance, text editor with dozens of plugins and syntax highlight is no joke either and I have no issues on my MacBook Air with only two cores from few years ago - abandoned Jet Brains IDEs for a web based text editor (VScode) and works pretty well even on large code bases.
As for performance, text editor with dozens of plugins and syntax highlight is no joke either and I have no issues on my MacBook Air with only two cores from few years ago - abandoned Jet Brains IDEs for a web based text editor (VScode) and works pretty well even on large code bases.