It looks like the existing Unreal build system can include JS files.
ModuleRules: [HTML5JS.Build.cs]
Sample JS: [HTML5JavaScriptFx.js]
C++ hooks: [HTML5JavaScriptFx.h]
The Development Blog of Tim Graupmann
It looks like the existing Unreal build system can include JS files.
ModuleRules: [HTML5JS.Build.cs]
Sample JS: [HTML5JavaScriptFx.js]
C++ hooks: [HTML5JavaScriptFx.h]