No longer works as with assemblyscript 0.21.x

[Pyrolistical]

AssemblyScript/assemblyscript#2157 broke it
The --extension cli option was removed

[Pyrolistical]

Workaround, use my version of the plugin https://github.com/Pyrolistical/vite-plugin-assemblyscript

[Bonnev]

@Pyrolistical thanks man!