Why do webpack import paths always start with './'?

Question

webpack

Explain the nuances:

import greet from './greeter.js';
import greet from 'greeter.js';

2 will not work. My knowledge of paths is either wrong or incomplete, but ./ is the current directory. If ./ is omitted, it will also be the current directory. Couldn't find a clear answer on google

Answer 1

If ./ is omitted it will also be the current directory

If ./ is omitted, then the search will be in node_modules, and this file will not be there))