u32 is enough for spans.

https://github.com/Boshen/oxc/blob/b6912513ba93ebb01ebc8882598951e26a79ea6c/crates/oxc_ast/src/node.rs#L11-L18

This is currently using usize because miette only accepts Range in its miette::Diagnostic macro.

https://github.com/Boshen/oxc/blob/b6912513ba93ebb01ebc8882598951e26a79ea6c/crates/oxc_diagnostics/src/lib.rs#L29-L33

There should be a workaround but I haven't investigated in detail yet.