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node-chess cannot be imported using common-js syntax

See original GitHub issue

In the README examples, the module chess is imported using require. However, this module is an ES6 module and doesn’t allow itself to be required (at least for me).

This is the error I get when trying to require the module:

var Chess = require('chess').Chess;

Error [ERR_REQUIRE_ESM]: require() of ES Module C:\Users\Joey\Programming\Node.js\node_modules\chess\src\main.js from C:\Users\Joey\Programming\Node.js\chess.js not supported.
Instead change the require of main.js in C:\Users\malvi\Programming\Node.js\ChessBot\chessjstest.cjs to a dynamic import() which is available in all CommonJS modules.
    at Object.<anonymous> (C:\Users\Joey\Programming\Node.js\chessjs.js :3:13) {

Node.js v17.0.

And this is the code used to generate this error:

const Chess = require('chess').Chess;

Do the examples need to be updated, or am I doing something wrong?

Issue Analytics

  • State:open
  • Created a year ago
  • Comments:15 (2 by maintainers)

github_iconTop GitHub Comments

TimMikeladzecommented, Dec 28, 2022

FYI in case it helps anyone out: in order to unblock myself I published @tmikeladze/chess which can be imported in a common js project. It has the changes from #88

brozephcommented, Dec 1, 2022

@SamTwining thank you for your checking on this… I ended up adding an examples folder with a file named usage.go. I performed an npm link to create the chess module symlink globally for my node install and then ran the file…

git clone
cd node-chess
npm link
cd examples
npm link chess
node usage.js

I was able to observe this working, and I’m running node v16.18.1 at this time. Does the above work for you?

Read more comments on GitHub >

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