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Vite deliberately runs two pipelines: in dev, dependencies are pre-bundled to ESM by esbuild and cached under node_modules/.vite , while production builds go through Rollup. This split is documented architecture, not an accident, and it creates a real interoperability question for teams shipping packages that mix CommonJS and ESM entry points. The constraint
Goal Diagnose a failed deployment that stops at build time when Bun’s bundler encounters a CommonJS module or a circular ES module dependency. Constraints Bun’s bundler accepts only ES modules; attempting to import a CommonJS module (e.g., require('fs') ) during bun build triggers a compile‑time error. Dynamic imports must use a literal string; import(module
Feathers 5 ships as ESM-first modules, so applications that previously loaded the framework through require() now encounter a compatibility boundary. The framework package exports resolve through ES module entry points, meaning a CommonJS application attempting to require @feathersjs/feathers fails with ERR_REQUIRE_ESMENT unless the package explicitly provid
Goal is to migrate a small Node.js application from CommonJS to ECMAScript Modules without service interruption. The codebase currently relies on .js files interpreted as CommonJS and on CommonJS-specific loading semantics. A documented configuration transition is setting package.json "type" to "module", which changes the default interpretation of .js files
WebStorm provides automatic import suggestions based on the project's module system. In large-scale TypeScript projects utilizing a mix of CommonJS and ECMAScript Modules (ESM), the IDE must resolve symbols across different module boundaries to provide accurate completion. There is uncertainty regarding how the IDE prioritizes import styles when a symbol is
Goal Achieve predictable default imports when migrating a small application to TypeScript without downtime, relying on esModuleInterop to synthesize default exports from existing CommonJS dependencies. Constraints and uncertainty The compiler maps a default import to module.exports when only that property is assigned, but to module.default when both module.e
vitejs
vite
rollup
bun
nodejs
feathersjs
javascript
webstorm