3

I tried importing nanoid into NestJS and got this error:

Error [ERR_REQUIRE_ESM]: require() of ES Module ....
... Instead change the require of index.js in ... to a dynamic import() which is available in all CommonJS modules.

The import code was:

import { Injectable } from '@nestjs/common';
import { nanoid } from 'nanoid';   //wont import, gives error
import { User } from './data-objects/user.object';

I also tried variation of the import statement:

// I tried this alternative
import * as nanoid from 'nanoid';

// Also tried this
const nanoid = require ( 'nanoid' );

Nothing worked.

Why is this error happening and how am I supposed to install nanoid in NestJS ?

Yariv
  • 1,212
  • 10
  • 21

1 Answers1

12

I could not find a straight answer to my question with a simple search and only after some research on nanoid github issue #365 found the answer.

Some background on the issue

  • On Jun 08 2022 nanoid Ver.4.0.0 was released with a breaking change.

  • It has a new feature that where it now supports only ESM applications

  • This makes it non-compatible to applications using CommonJS. Link to the change log...

  • The nanoid support team promised to continue supporting Ver.3.x.x as as needed until support for EMS in nodejs & nestjs comes along.

Until a day comes when NestJS supports ESM, you will have to stay with nanoid Version 3.x.x

How to fix

  • First uninstall the nanoid version 4.x.x : npm uninstall nanoid
  • Then install the ne version and any other future 3.x.x : npm install nanoid@^3.0.0

The source for my solution came from a comment in the github issue @ayushsharma82.

Yariv
  • 1,212
  • 10
  • 21