VScode actually integrates with WSL really well using its remote connection feature, there’s a guide to setting it up here: https://forum.dfinity.org/t/dfx-on-windows-for-beginners/194/13
You’d need to install the Motoko plugin alongside the WSL remote plugins, then you’ll have type checking and syntax highlighting as normal.
There are a few more WSL setup tips here too: https://forum.dfinity.org/t/native-windows-support/1241/2?u=ori