JSON Rules

Below the list of rules supported by Biome, divided by group. Here’s a legend of the emojis:

• The icon indicates that the rule is part of the recommended rules.
• The icon indicates that the rule provides a code action (fix) that is safe to apply.
• The icon indicates that the rule provides a code action (fix) that is unsafe to apply.
• The icon indicates that the rule is currently only available in the 2.0 beta release.

nursery

Rule name	Description	Properties
noQuickfixBiome	Disallow the use if quickfix.biome inside editor settings file.

suspicious

Rule name	Description	Properties
noDuplicateObjectKeys	Disallow two keys with the same name inside objects.

Recommended rules

• noDuplicateObjectKeys (Severity: error)