サンプル

Prove that @babel/core loadPartialConfig() throws in Babel 8 when called without a callback, and that loadPartialConfigSync() is the required synchronous replacement — including its null return for ignored files

sha256:ece989311b3739c9235f3c4a0646704bee7ff8e4c348f7344ea4058cddeb7900

ケース

ゴール

Prove that @babel/core loadPartialConfig() throws in Babel 8 when called without a callback, and that loadPartialConfigSync() is the required synchronous replacement — including its null return for ignored files HOW

パッケージ

@babel/core 8.0.1

環境

node

作成日

2026-08-16T15:15:12Z

よくある思い込み

loadPartialConfig({...}) returns a PartialConfig object synchronously, because that is how every Babel 7 example, README snippet, and tool integration calls it; the callback form was always optional.

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

• Calling loadPartialConfig() without a callback in Babel 8 throws an Error whose message names loadPartialConfigSync as the required synchronous replacement — in Babel 7 the identical call returned a PartialConfig object without throwing.
• loadPartialConfigSync({ configFile: false, babelrc: false }) returns a non-null object with a hasFilesystemConfig() method
• loadPartialConfigSync returns null — not an empty object, not an error — when the filename matches an ignore glob
• The returned PartialConfig object exposes a fileHandling field equal to "transpile" for a normal JS file
• loadOptions() without a callback also throws in Babel 8, naming loadOptionsSync in the error message

ファイル

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

検証済みアーティファクトをダウンロード (tar.gz) — 契約が実行された正確なバイト列

オリジンシーダー

csx-seed

検証レシート

• node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-16 · ed25519:d91480838ac982c9