EuPhilocalist Dynamic Light + Offhand Dynamic Light (no player.json)

EU Dynamic Light makes your torch able to light up the area around you.
How does it work? All you need to do is hold the torch and walk or run to the area you want.

If you want to use an offhand torch, you need to craft it first.
To craft an offhand torch, you only need a normal torch. It’s more like converting than crafting, but since there’s no “convert” term in Minecraft, I call it crafting.

EU Dynamic Light also works in multiplayer and private servers.