Frontend & browser·Modules, bundling and the build
you split the dependencies into their own file so a change to your code does not invalidate them.
Vendor chunk
Also calledvendor bundle, framework chunk
A chunk holding third-party dependencies, separated because they change far less often than application code. It exists purely to serve the cache: returning visitors re-download only what changed. One large vendor chunk is a blunt version of this, since a single dependency bump invalidates the lot; splitting the largest dependencies out individually is the refinement.