Tree shaking in this context is not unlike a compiler: it looks at all the code and determines if it will ever run in the image, eliminating any unnecessary cod

Tree shaking in this context is not unlike a compiler: it looks at all the code and determines if it will ever run in the image, eliminating any unnecessary code and delivering the minimal image needed. The code is in a “tree” format like an AST, and you’re shaking the tree to test what can be removed.