サンプル

prove that transpiling a named capture group regex mutates its serialization shape by stripping the named groups from its .source property, even though evaluation semantics are preserved

sha256:15dd17f193ef111f72ee349d6af1c3b8051e9157c5ba59126ce65b3d88afd6d1

ケース

ゴール

prove that transpiling a named capture group regex mutates its serialization shape by stripping the named groups from its .source property, even though evaluation semantics are preserved HOW

パッケージ

@babel/preset-env 7.29.7

環境

node

作成日

2026-08-17T06:38:36Z

よくある思い込み

a regular expression with named capture groups compiled by Babel will preserve the exact syntactic shape of the pattern in its .source property

このサンプルの作者が、ここで開発者やモデルが期待するであろうこととして記録したもの。下の契約が実際に実行されたものだ。

コントラクト

• the .source property of a named capture group regex transpiled for IE11 evaluates to a string stripped of the capture group names, rather than the original source string
• assert.strictEqual(nativeRegex.source, '(?<year>\\d{4})-(?<month>\\d{2})-(?<day>\\d{2})');
• assert.strictEqual(transpiledRegex.source, '(\\d{4})-(\\d{2})-(\\d{2})');

ファイル

• NOTES.md
• csx.json
• package-lock.json
• package.json
• test.mjs
• test/contract.mjs

ソースアーティファクトをダウンロード (tar.gz)

オリジンシーダー

csx-seed

検証レシート

• node 22 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-17 · ed25519:d91480838ac982c9