mobxjs / mobxjs/mobx-react-devtools
Cannot read property 'on' of undefined
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- Dominant language
- JavaScript
- Stars
- 1.2k
- Forks
- 45
- PR merge metrics
- No merged PRs in 30d
Description
I have this error when including <DevTools />

Using these packages:
"mobx": "^5.9.4",
"mobx-react": "^6.0.2",
"mobx-react-devtools": "^6.1.1",
"react": "16.8.6",
"react-dom": "16.8.6",
"react-scripts": "^3.0.1",
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the error with the listed mobx, mobx-react, mobx-react-devtools, React, and react-scripts versions while rendering . Inspect the DevTools integration and determine what causes the undefined value; done means the reported error no longer occurs with this setup.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, react
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100