[Bug]: Nullish coalescing in case clause in strict mode throws `ReferenceError`

[p51lee]

Describe the bug

input.js is expected to be terminated without error but the transpiled code throws ReferenceError.

Input code

"use strict";
switch ( 0 ) { case 0 ?? 0 : }

Config

No response

Playground link

https://play.swc.rs/?version=1.3.11&code=H4sIAAAAAAAAA1MqLU5VKC4pykwuUbLmKi7PLEnOUNBQMFDQVKhWSE4EShoo2NsDCSuFWgBB29PhLAAAAA%3D%3D&config=H4sIAAAAAAAAA0WMTQrEIAxG75K1286id5hDBCctFv9IUhgR714tlu7C915ehUMsrBUyshCPS0pU%2FMMKZAOKZZcVTNf6tKEXagYUeScdiiyd%2BZSEJjUQXHRbGSWbQmYSeRHG3T9m66GQfucYKmjJdAc%2F0N7G%2FHPynaLySe0Cj9ke9LUAAAA%3D

Expected behavior

The input code terminates without error:

$ node input.js
// terminates without error

Actual behavior

The transpiled code throws ReferenceError:

$ node output.js
output.js:3
    case (ref = 0) !== null && ref !== void 0 ? ref : 0:
              ^

ReferenceError: ref is not defined
    at Object.<anonymous> (/Users/p51lee/dev/esmeta-plrg/output.js:3:15)
    at Module._compile (node:internal/modules/cjs/loader:1159:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1213:10)
    at Module.load (node:internal/modules/cjs/loader:1037:32)
    at Module._load (node:internal/modules/cjs/loader:878:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
    at node:internal/main/run_main_module:23:47

Node.js v18.11.0

Version

1.3.11 (default SWC playground)

Additional context

No response

[swc-bot]

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