https://github.com/sp614x/optifine/blob/master/OptiFineDoc/doc/shaders.txt#L472
Because then that states that you 'officially' support optifine which I dont think is a great idea.
https://github.com/sp614x/optifine/blob/master/OptiFineDoc/doc/dynamic_lights.properties
@luigihutch why is this bad? it will be a simple json file.
Will close this for now since optifine does not yet support data-aware entity lights.
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Because then that states that you 'officially' support optifine which I dont think is a great idea.