I want to use RectAreaLight but it does not work. please check this fiddle. i need help.
- You have to include RectAreaLightUniformsLibfromexamples/js/lights/RectAreaLightUniformsLib.jsand call.init().
- You have to use MeshStandardMaterialorMeshPhysicalMaterial
- You have to change your light color from black to something more bright   
- Your RectAreaLightneeds to look at the cube
RectAreaLight is still experimental. That’s the reason for these limitations.
Fixed fiddle: https://jsfiddle.net/ge4m0voh/
              
              
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