Error when running `TypeError: Cannot read properties of undefined (reading 'map')`

[maca]

Hi, I am trying to use elm-verify-examples with a package.

I get an error when I run, I've tried node 20 and node 22, both with yarn and npm, local and globa.

I have an M1 macbook and I use nix to manage my dependencies.

/Users/maca/.config/yarn/global/node_modules/elm-verify-examples/bin/cli-helpers.js:44
     .map((d) =>
      ^

TypeError: Cannot read properties of undefined (reading 'map')
   at resolveTests (/Users/maca/.config/yarn/global/node_modules/elm-verify-examples/bin/cli-helpers.js:44:8)
   at Object.loadVerifyExamplesConfig (/Users/maca/.config/yarn/global/node_modules/elm-verify-examples/bin/cli-helpers.js:28:10)
   at Object.init (/Users/maca/.config/yarn/global/node_modules/elm-verify-examples/bin/runner.js:15:38)
   at Object.<anonymous> (/Users/maca/.config/yarn/global/node_modules/elm-verify-examples/bin/cli.js:34:20)
   at Module._compile (node:internal/modules/cjs/loader:1546:14)
   at Module._extensions..js (node:internal/modules/cjs/loader:1691:10)
   at Module.load (node:internal/modules/cjs/loader:1317:32)
   at Module._load (node:internal/modules/cjs/loader:1127:12)
   at TracingChannel.traceSync (node:diagnostics_channel:315:14)
   at wrapModuleLoad (node:internal/modules/cjs/loader:217:24)

[gampleman]

Hi @maca! Can you share a bit more about the package, your configuration, etc.?

[maca]

Hey @gampleman !

Sure, the package is this one: https://github.com/maca/elm-form-toolkit About the configuration, yarn and node 22 are installed using nix darwin, elm-verify-example is installed globally via yarn, but I've tried with local npm installation too. not sure what else might be relevant.

[lue-bird]

I wanted to note this before, are the latest commits which seem to fix this released? (I don't think so)

[emmabastas]

EDIT: https://github.com/stoeffel/elm-verify-examples/commit/7f3cc9cdbe2016345d69cbd17cc5402b8feae104 fixes this for me.

---

Hey I just wanted to ping that I'm experiencing this issue as well. Node 20.14.0, and NPM 10.7.0.

I also use Nix to manage my dependencies so maybe this is somehow a problem with Nix?

flake.nix:

{
  description = "";

  inputs.flake-utils.url = "github:numtide/flake-utils";

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem
      (system:
        let pkgs = nixpkgs.legacyPackages.${system}; in
        {
          devShells.default = pkgs.mkShell {
            packages = with pkgs; [
              nodejs
            ];
          };
        }
      );
}