As is: Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: ...

[TerasakaKazuma]

I am trying to implement in the backend Nestjs to create a UCAN token.

However, I have a problem with the

import { KeyPair } from 'ucan-storage/keypair’;

I can't get the import to work.

Error [ERR_REQUIRE_ESM]: Must use import to load ES Module:

error occurs.

[hugomrdias]

can you give a snippet of your code so we can better review this error ?

[stefanodecillis]

Any updates on this topic? I have the same problem with my expressJS application (using typescript)

Here is a snippet

import KeyPair from 'ucan-storage/keypair'

// KeyPair.create returns a promise, so it should be called from an async function or resolved with `.then`
async function createNewKeypair() {
  const kp = await KeyPair.KeyPair.create()

  // log the DID string for the public key to the console:
  console.log(kp.did())
}

but as you can see it has been copy-pasted from the README.md file.

[michaelprummer]

Any update on this?
I have the same problem with a default nodejs express app (typescript, module: commonjs)

[rhdeck]

I made a commonJS library for UCAN as a solution for this: https://npmjs.com/package/ucan-storage-commonjs