Unused opens/values false positives with type check errors
Open
Area-Compiler-Checking
Area-LangService-UnusedOpens
Bug
Impact-Low
- Dominant language
- F#
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- Forks
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- Avg merge
- 4d 22h
- Merged PRs (30d)
- 144
Description
The type checker sometimes exits early and doesn't dive into inner expressions after it has encountered an error (probably to avoid a potential cascade of unhelpful error messages). Unused opens/values analysis then works with incomplete data. I suggest we suspend this analysis if the document contains any errors.
**Expected behavior**
`System` and `args` are greyed out.
**Actual behavior**
`System` and `args` are not shown as unused.
**Related information**
VS 17.9.0 Preview 1.0
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