Node.js: SyntaxError: Cannot use import statement outside a module code example

Example 1: SyntaxError: Cannot use import statement outside a module

Node.js >= v13

Save the file with .mjs extension, &
Add { "type": "module" } in the nearest package.json.
(run npm init to create package.json)

Example 2: Uncaught SyntaxError: Cannot use import statement outside a module three.js

//If you already put this and still error.
<script src="/node_modules/three/examples/jsm/controls/OrbitControls.js"></script>
//Try changing jsm to js
<script src="/node_modules/three/examples/js/controls/OrbitControls.js"></script>