node.js - Why is 'type: module' in package.json file?

Question

I upgraded the node and built the existing file.

But it didn't build, and there was an error.

Error [ERR_REQUIRE_ESM]: Must use import to load ES Module:                          │
   │   ~~/nuxt.config.js                                      │
   │   require() of ES modules is not supported.                                            │
   │   require() of ~~/nuxt.config.js from                    │
   │   ~~/config.js is an ES   │
   │   module file as it is a .js file whose nearest parent package.json contains "type":   │
   │   "module" which defines all .js files in that package scope as ES modules.            │
   │   Instead rename nuxt.config.js to end in .cjs, change the requiring code to use       │
   │   import(), or remove "type": "module" from                                            │
   │   ~~/package.json.  

So I removed 'type: module' in package.json file.

Is it okay to remove it?

Answer 1

When you have 'type: module' in the package.json file, your source code should use import syntax. When you do not have, you should use require syntax.

Adding 'type': 'module' to the package.json enables ES 6 modules. For more info, see here.