Update lint #1588

New Issue

MrUnknownDE · 2026-04-05T16:29:11+02:00

MrUnknownDE commented

2026-04-05 16:29:11 +02:00

Originally created by @Gift-Stack on 10/5/2023

Title of this pull request?

Null asserted optional chain restriction

Small Description?

?. optional chain expressions provide undefined if an object is null or undefined. Using a ! non-null assertion to assert the result of an ?. optional chain expression is non-nullable and is likely wrong.

Most of the time, either the object was not nullable and did not need the ?. for its property lookup, or the ! is incorrect and introduces a type safety hole.

Pull Request Checklist:

Please make sure all jobs pass before requesting a review.
Put closes #XXXX in your comment to auto-close the issue that your PR fixes (if such).
Have you lint your code locally before submission?
Did you write tests where appropriate?

#43

Screenshots (if appropriate):

*Originally created by @Gift-Stack on 10/5/2023* ### Title of this pull request? Null asserted optional chain restriction ### Small Description? `?.` optional chain expressions provide undefined if an object is `null` or `undefined`. Using a `!` non-null assertion to assert the result of an `?.` optional chain expression is non-nullable and is likely wrong. > Most of the time, either the object was not nullable and did not need the `?.` for its property lookup, or the `!` is incorrect and introduces a type safety hole. ### Pull Request Checklist: - [x] Please make sure all jobs pass before requesting a review. - [x] Put `closes #XXXX` in your comment to auto-close the issue that your PR fixes (if such). - [x] Have you lint your code locally before submission? - [ ] Did you write tests where appropriate? ### Related Issue? #43 ### Screenshots (if appropriate):

MrUnknownDE closed this issue

2026-04-05 16:29:11 +02:00

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Reference: github/oneuptime#1588