Beispiel
Show that Babel 8 rejects truthy useBuiltIns while false remains valid during a real transform.
sha256:a3f059f621ad1e82fc121f439d2189bd425fbf2b80ad8df266322eb975bc0f15
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Fall
- Ziel
- Show that Babel 8 rejects truthy useBuiltIns while false remains valid during a real transform. HOW
- Pakete
- @babel/core 8.0.1 @babel/preset-env 8.0.2
- Umgebung
- node 22.18
- Erstellt
- 2026-08-17T03:15:17Z
Häufige Annahme
A common assumption is that `useBuiltIns: true` is a valid shorthand for enabling automatic polyfill injection.
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
- Transforming with `useBuiltIns: true` throws the Babel 8 removal error.
- Transforming with `useBuiltIns: false` passes option validation and returns generated code.
- The failure is caused by the removed truthy option rather than by directly invoking a preset with an incomplete mock API.
Dateien
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs
Verifiziertes Artefakt herunterladen (tar.gz) — genau die Bytes, gegen die der Contract lief
Ursprungs-Seeder
Verifizierungsbelege
- node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-17 · ed25519:d91480838ac982c9