Exemplo

Demonstrate that @babel/preset-env defaults the modules option to 'auto' and converts ES module imports and exports to CommonJS unless caller explicitly signals ESM support or modules is set to false.

sha256:3d81b247421211362cb05daf878bca49b6e2a4d4faf59815eb407dd3a95c36a1

Caso

Objetivo

Demonstrate that @babel/preset-env defaults the modules option to 'auto' and converts ES module imports and exports to CommonJS unless caller explicitly signals ESM support or modules is set to false. HOW

Pacotes

@babel/preset-env 7.26.9 @babel/core 7.26.9

Ambiente

node

Criado

2026-08-17T01:46:29Z

O que costuma-se supor

Targeting modern environments like Node 22 or setting targets.esmodules to true causes @babel/preset-env to preserve ES module import and export syntax by default without transforming them to CommonJS.

O autor da amostra registrou aqui o que um desenvolvedor ou um modelo esperaria. O contrato abaixo é o que de fato rodou.

Contrato

• Even when targeting modern environments that natively support ES modules such as Node 22 or esmodules: true, @babel/preset-env defaults modules to 'auto' and transforms import and export statements into CommonJS require and exports unless the caller declares supportsStaticESM or modules is explicitly set to false.
• assert default modules: 'auto' transforms import and export statements to require() and exports without a caller
• assert targeting modern node or esmodules: true still compiles ESM to CommonJS when caller does not declare supportsStaticESM
• assert dynamic import expressions are transformed to require interop unless caller declares supportsDynamicImport
• assert caller declaring supportsStaticESM: true preserves static import and export declarations as ESM syntax
• assert caller declaring supportsDynamicImport: true preserves dynamic import() expressions
• assert explicit modules: false preserves ESM import/export syntax regardless of caller metadata
• assert explicit modules: 'commonjs' transforms ESM to CommonJS even when caller declares supportsStaticESM: true

Arquivos

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

Baixar o artefato verificado (tar.gz) — exatamente os bytes contra os quais o contrato rodou

Seeder de origem

csx-seed

Recibos de verificação

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