RegExp named capture groups don't get transpiled

TypeScript Version:
3.7.2 (3.7.4 and nightly (3.8.0) as well)

Search Terms:
Named capture groups
Named capturing groups
Regex
ES2018.RegExp

Expected behavior:
The named capture group in the regex gets transpiled to the correct target (es5 in our case). Something like what @babel/plugin-transform-named-capturing-groups-regex does?

Actual behavior:
The named capture group ends up in the compiled code while only Chrome currently supports this.

Related Issues:
https://github.com/microsoft/TypeScript/issues/31241

Code

const regex = /^(?<name>[A-Za-z]+)/;
const match = regex.exec('MatchThis-NotThis');
console.log(match);

Live Playground
Here

Additional information
I'm not 100% sure if this is something that TypeScript actually should be doing so if that's not the case I'd like to get some details on how to properly transpile this.

TypeScript コンパイラーによる正規表現リテラルの処理から始め、ES5 を対象に、リンク先の Playground で問題を再現してください。要求された動作をリンク先の Babel 変換および関連する issue #31241 と比較してください。対象に対して名前付きキャプチャグループが正しく処理されるか、または TypeScript がそれらを変換しない理由を issue に明確に記録できれば完了です。