TypeError: BIP32Factory is not a function

[pajasevi]

I am using a documented moethod of using this library, yet Node.js throws an error when I try to use the BIP32Factory.

import BIP32Factory from 'bip32'
import * as ecc from 'tiny-secp256k1'

const bip32 = BIP32Factory(ecc)

results in error:

TypeError: BIP32Factory is not a function

My project is running Node.js v14.17.5 and is configured to use ES modules. Same error happened when I tried importing tiny-secp256k1 asynchronously.

I've also tried importing the module directly as import BIP32Factory from 'bip32/src/bip32.js' but it resulted in the same error.

I' ve looked into the source files (in node_modules) and haven't found what could be wrong.

[pajasevi]

Found out this can be somewhat "fixed" when I use the module as

const bip32 = BIP32Factory.default(ecc)

Which seems to me like there is something wrong when I'm actually using the ES modules.

[junderw]

bip32 doesn't support esm yet.

the import example is for Typescript.

[pajasevi]

Yeah but the weird thing is that I haven't experienced such issue with any other library. Which kinda tells me there might be something wrong with the TS export transpilation to JS.

[junderw]

esModuleInterop maybe?

can you try:

• clone and install with "npm ci"
• modify tsconfig
• run "npm run build"
• install bip32 to your project via "npm install ../bip32" (assuming projects are sibling folders)

Tell me if the issue resolves.

[pajasevi]

That didn't actually help. I also tried messing with reexporting in ts-src/index.ts but with no luck. Always leads to the same compiled code.

[electic]

Getting the same error:

This expression is not callable.
  Type 'typeof import("/Users/x/Documents/x/code/x/x/node_modules/bip32/types/index")' has no call signatures.ts(2349)

[pajasevi]

Found out this is an issue in Typescript code as well because the generated types are different than generated code. Only way to fix this was using ts-ignore

[pajasevi]

Fixed in 3.0.1

[junderw]

I also have a PR for tiny-secp256k1 that Allows commonJS usage (require)

If you have time, please take a look.

https://github.com/bitcoinjs/tiny-secp256k1/pull/63