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process is not defined error occurring when using the CDN source #768

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chacha912 opened this issue Apr 4, 2024 · 4 comments · Fixed by #778
Open

process is not defined error occurring when using the CDN source #768

chacha912 opened this issue Apr 4, 2024 · 4 comments · Fixed by #778
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@blurfx

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@chacha912
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chacha912 commented Apr 4, 2024 •
edited

What happened:

In PR#717, a Webpack configuration(nodeEnv: false) was added to make process.env.NODE_ENV apply in the environment where the library is used. However, this caused the process.env.NODE_ENV to not be replaced with a string in the built code and remain exposed as is. Consequently, when using the CDN source, the process is not defined error occurs in the browser environment.

image

We need to investigate how to apply a different Webpack configuration to the source deployed on the CDN. (Ref: cdnjs/packages#737)

What you expected to happen:

When using the CDN source code, errors should not occur.
Devtools should be available when using the yorkie-js-sdk.js source, but unavailable when using the yorkie-js-sdk.min.js source.

How to reproduce it (as minimally and precisely as possible):

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div>There are currently <span id="peersCount"></span> peers!</div>

    <!-- include yorkie js -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/yorkie-js-sdk/0.4.13/yorkie-js-sdk.js"></script>
    <script>
      async function main() {
        const client = new yorkie.Client('https://api.yorkie.dev', {
          apiKey: '', // enter your key 
        });
        await client.activate();

        const doc = new yorkie.Document('my-first-document');
        doc.subscribe('presence', (event) => {
          const peers = doc.getPresences();
          document.getElementById('peersCount').innerHTML = peers.length;
        });
        await client.attach(doc);
      }
      main();
    </script>
  </body>
</html>

Anything else we need to know?:

Environment:

  • Operating system:
  • Browser and version:
  • Yorkie version (use yorkie version):
  • Yorkie JS SDK version: 0.4.13
@blurfx
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blurfx commented Apr 17, 2024

It seems like the problem could be easily solved by type checking like we've been doing. I'll create a PR.

@blurfx blurfx self-assigned this Apr 17, 2024
@blurfx blurfx mentioned this issue Apr 17, 2024
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@chacha912
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chacha912 commented Apr 18, 2024 •
edited

@blurfx It seems I was a bit short on context in explaining the issue. In order to make devtools work only in the development build environment, I added the condition: (process.env.NODE_ENV === 'production').

However, adding the condition typeof process !== 'undefined' resolves the error in CDN environments, but it causes an issue where devtools always run in environments using a JavaScript bundler.

You can verify this by installing the yorkie-js-sdk from the examples and then running devtools.

  • During npm run dev, devtools should be running.
  • During npm run build -> npm run preview, devtools should not be running. (Currently, due to the condition typeof process !== 'undefined', devtools still run in the production build environment.)

Is there a good way to resolve this?

For reference, Liveblocks provides the following guidance on this issue: https://liveblocks.io/docs/platform/troubleshooting#process-not-defined

@chacha912 chacha912 mentioned this issue Apr 22, 2024
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blurfx commented Apr 22, 2024

I think we need to set environment variables or configure bundler plugin to determine the environments.

Let me check it out a bit more. I'll reopen the issue until it's resolved.

@blurfx blurfx reopened this Apr 22, 2024
@chacha912
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@blurfx Thanks. Currently, to avoid this issue, we've changed Devtools execution to be determined directly by users setting true/false instead of checking process.env.NODE_ENV. (ref: #760)

const doc = new yorkie.Document('docKey', {
  enableDevtools: true, // Modify the condition according to your situation
});

Once this issue is resolved, it would be good to reintroduce the feature of Devtools defaulting to running only in development builds.

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Fix issue of referencing process object on browser yorkie-team/yorkie-js-sdk
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@blurfx @chacha912