Bundlers take many - usually at least hundreds, often tens of thousands - individual source files (modules) and combine them into one or few files. During that, they also perform minification, dead code elimination and tree shaking (removal of unused module exports).
It's orthogonal to TypeScript - bundler will invoke a TS compiler during the process and also functions as a dev server, but that's just for nicer DX.
Package version resolution is done by package manager, not bundler.
It's orthogonal to TypeScript - bundler will invoke a TS compiler during the process and also functions as a dev server, but that's just for nicer DX.
Package version resolution is done by package manager, not bundler.