Usage of `auto-import`
**Question:** When do we use `auto-import`?
The answer is, when a component of a package or a package is used in almost all
files of the project.
**Question:** When do we not use `auto-import`?
When a particular component is used just once or twice in a project, we do not
`auto-import` instead we `import` it in the specific file/s where the component
is required.
**Question:** Why do we not `auto-import` all the components or packages?
It downloads the complete package in our project making the size of the project
unnecessarily big.