Are projects created using Qt WASM required to be under GPL?

As I understand, the core modules of Qt are under LGPL and can be used in a closed source project.
But the Qt WASM module is under GPL. I’m not sure if it’s linked into the project or only acts as a build system.

If I create a wasm project using Qt (and by extension, the Qt WASM module), will it fall under GPL or can it be closed source?

And if it falls under GPL, is it considered ‘distribution’ if hosted on a server and accessed by a browser?