An extension for Brackets editor providing support for SAPUI5/OpenUI5. I am no longer using Brackets, but you can try it if you like - should work with versions > 1.14. I ported UI5 API reference panel to VSCode extension; the same for OData Mock files generation, but this extension has more nice Brackets editor specific features like Quick Docks, Quick Edit as well as JavaScript code hints, backed by Tern.js.

Brackets UI5