Cannot read property 'filter' of undefined

[stefan1968]

Using versions: - "eslint-plugin-flowtype": "2.37.0",
"eslint-plugin-flowtype-errors": "3.3.2",

Getting the following errors, when I run lint:-

yarn lint v0.27.5
$ eslint ./app//.js
Cannot read property 'filter' of undefined
TypeError: Cannot read property 'filter' of undefined
at collect (/Users/stefanwalker/Projects/Influence/Frontend2/node_modules/eslint-plugin-flowtype-errors/dist/collect.js:178:3)
at Program (/Users/stefanwalker/Projects/Influence/Frontend2/node_modules/eslint-plugin-flowtype-errors/dist/index.js:94:48)

[jdmota]

Can you provide a minimal test case with the contents of that file?

[leyyinad]

I got the same in . I didn't have the time yet to strip it down to a minimal test case, but maybe this is of help: The error happens in (list) collect.js, line 178.

parsedJSONArray is:

{ flowVersion: '0.56.0',
  exit:
   { code: 110,
     reason: 'Unknown_error',
     msg: 'Unhandled exception: End_of_file' } }

so parsedJSONArray.errors and hence parsedJSONArray.errors.filter is not defined.

Versions are:

├─ babel-plugin-flow-runtime@0.11.1
├─ eslint-plugin-flowtype-errors@3.3.2
├─ eslint-plugin-flowtype@2.39.1

Flow finishes with no errors at all. What might cause this?

[jdmota]

Thanks! I will update my PR so that we show an error instead of ignoring.

[amilajack]

Was this resolved?

[vitbokisch]

In my case eslint seemed to be working correctly, but using this plugin broke prettier formatting and got the same error message. Not sure if this helps with debugging the error...

[jdmota]

We no longer use filter in the collect.js file. Can this be closed?

[nwoltman]

@jdmota I am very certain that this can be closed. I believe #101 did fix it and then .filter() was removed in #119, so this can't possibly still be a problem.