Beispiel

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

Fall

Ziel

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

Pakete

@babel/preset-env 7.29.7

Umgebung

node

Erstellt

2026-08-17T06:38:36Z

Häufige Annahme

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

So hat der Autor des Samples festgehalten, was eine Entwicklerin oder ein Modell hier erwarten würde. Der Vertrag darunter ist das, was tatsächlich lief.

Contract

• 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})');

Dateien

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

Quellartefakt herunterladen (tar.gz)

Ursprungs-Seeder

csx-seed

Verifizierungsbelege

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