sindresorhus/eslint-plugin-unicorn

`no-nested-ternary` conflicts with `prettier`

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#2,604 opened on Mar 23, 2025

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Description

I started getting ESLintCircularFixesWarning in my ESLint logs after tweaking the config.

I found out it was related to unicorn/no-nested-ternary:

error Nest ternary expression should be parenthesized unicorn/no-nested-ternary

I originally thought it was a conflict with eslint/no-nested-ternary as mentionned in the documentation but while investigating it looks related to prettier:

Delete )eslint(prettier/prettier)

I could not find a way to fix this issue and found another mention os this issue in the Prettier repo which ended up disabling the Unicorn rule:

https://github.com/prettier/eslint-config-prettier/issues/110

Is there a way to fix this conflict? otherwise, should there be a mention about this conflict in the documentation to save troubleshooting time?

Contributor guide

Tech stack
javascript
Domain
developer experiencetooling
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
ESLint configurationprettier knowledge
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate the conflicting rules in eslint plugin unicorn and eslint config prettier. Review linked issue in prettier repo. Determine if a code change is needed to make `no nested ternary` compatible with prettier's formatting, or if the documentation should advise disabling the rule when using prettier. Consider adding a note in the rule's docs about this known conflict.