Code splitting is an important part of delivering high-performance JavaScript applications, helping to avoid downloading and executing more JavaScript than is necessary for a given page. At a high level, "code splitting" refers to the process of breaking up bundled code into multiple smaller bundles that can be loaded and executed independently as needed.
Why
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Between new worker type
Can entry bundles be created for other contexts?
2/4Bundlers Passing
rollup 
parcel 
webpack Between workers
Can bundles be shared between the main thread and workers?
3.5/4Bundlers Passing
parcel rollup webpack 
browserify Dynamic import
Can split points be created using dynamic import?
3/4Bundlers Passing
parcel rollup webpack Multiple entry points per page
Can multiple entry points be used without duplicating modules?
3.5/4Bundlers Passing
parcel rollup webpack browserify One entry point per page
Are common entry dependencies extracted into a shared bundle?
3.5/4Bundlers Passing
parcel rollup webpack browserify Shared references between chunks
Are module exports between bundles live bindings?
4/4Bundlers Passing
browserify parcel rollup webpack Splitting single modules
Can modules be split apart based on export usage?
2Sub Tests
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