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Metro Bundler vs rollup: What are the differences?
Metro Bundler: 🚇 The JavaScript bundler for React Native. 🚅 Fast: We aim for sub-second reload cycles, fast startup and quick bundling speeds ⚖️ Scalable: Works with thousands of modules in a single application. ⚛️ Integrated: Supports every React Native project out of the box.; rollup: The next-generation JavaScript module bundler. It is a module bundler for JavaScript which compiles small pieces of code into something larger and more complex, such as a library or application. It uses the new standardized format for code modules included in the ES6 revision of JavaScript, instead of previous idiosyncratic solutions such as CommonJS and AMD.
Metro Bundler and rollup belong to "JS Build Tools / JS Task Runners" category of the tech stack.
Metro Bundler is an open source tool with 3.1K GitHub stars and 344 GitHub forks. Here's a link to Metro Bundler's open source repository on GitHub.
We mostly use rollup to publish package onto NPM. For most all other use cases, we use the Meteor build tool (probably 99% of the time) for publishing packages. If you're using Node on FHIR you probably won't need to know rollup, unless you are somehow working on helping us publish front end user interface components using FHIR. That being said, we have been migrating away from Atmosphere package manager towards NPM. As we continue to migrate away, we may publish other NPM packages using rollup.
Pros of Metro Bundler
Pros of rollup
- Makes it easy to publish packages4
- Easier configuration3
- Better tree shaking2
- Provides smaller bundle size2
- Integrates seamlessly with SystemJS1
- Produces very clean code1
- Very reliable1
- Very robust Plugin-API (years old Plugins still work)1
- Very flexible1
- Was built with ESM-Modules in mind1
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Cons of Metro Bundler
Cons of rollup
- No clear path for static assets1
- No Loader like Webpack (need to use sjs or ESM imports)1
- Almost everything needs to be a Plugin1
- Manual Chunking is a bit buggy1