swc produces an invalid syntax file (export const txt)

[gaeulbyul]

Description

When I compile this code with swc, It emits const txt; but that's an invalid syntax.

Expected behavior

I tested same code with Sucrase, Babel, and esbuild. All of these compilers produce empty code. so maybe swc should also follow this behavior?

Input code

(TypeScript. code from: https://github.com/gaeulbyul/RedBlock/blob/52d4bef6eb52bf27856660ddae188cc3a279cdc6/src/scripts/types.d.ts#L11-L13 )

declare namespace twttr {
  export const txt: typeof import('twitter-text')
}

Output

var twttr;
(function(twttr1) {
    const txt; // <------------ syntax error!
    twttr1.txt = txt;
})(twttr || (twttr = {
}));

Config

{
  "jsc": {
    "parser": {
      "syntax": "typescript"
    },
    "target": "es2019"
  }
}

Version

@swc/cli: 0.1.36
@swc/core: 1.2.51

[swc-bot]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.