규칙 3.2

A local variable, parameter, module constant or module variable may use any identifier TypeScript permits. Function parameters and body locals occupy a lexical scope inside the module’s: they may shadow a module value, and a closure resolves the nearest declaration. Duplicate declarations in the same scope remain errors. The backend must give a name its target cannot spell a fresh identifier, rewriting its declarations and references consistently. The authored IR, CPU oracle, diagnostics and debugger retain the source name. Other declarations retain their existing emitted-name contract: a name containing $, exactly _, or starting with __ is refused for WGSL; a class or namespace member is flattened to Owner_member.