cannot use an import statement outside a module esm code example
Example 1: cannot use import statement outside a module typescript
// Fix 1
Change .js files to .cjs
// Fix 2
Add "type": "module" to 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>