Rediscovering JavaScript

Importing from a Module

A module must import references it wants to use, such as primitives, functions, objects, or classes exported by other modules. The import directive should specify the location of the module or file to load. The path may be a relative path, an absolute path, or the name of the module file. In the last case, the location is decided based on the runtime environment and configuration; for example, Node may pick the module from the node_modules directory. The path in general does not include the file extension. JavaScript offers a variety of import options—choose the one that best meets your needs.

Importing Named Exports

There are two rules to bring in named exports from another module. First, the name specified in the import ...