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 has been implemented and scheduled for the next release.
nursery
Section titled “nursery”| Rule name | Description | Properties | | --- | --- | --- | | noEmptyObjectKeys | Disallow empty keys in JSON objects. | | | noTopLevelLiterals | Require the JSON top-level value to be an array or object. | | | noUntrustedLicenses | Disallow dependencies with untrusted licenses. | | | useRequiredScripts | Enforce the presence of required scripts in package.json. | |
suspicious
Section titled “suspicious”| Rule name | Description | Properties |
| --- | --- | --- |
| noBiomeFirstException | Prevents the misuse of glob patterns inside the files.includes field. | |
| noDuplicateDependencies | Prevent the listing of duplicate dependencies. | |
| noDuplicateObjectKeys | Disallow two keys with the same name inside objects. | |
| noQuickfixBiome | Disallow the use if quickfix.biome inside editor settings file. | |
| useBiomeIgnoreFolder | Promotes the correct usage for ignoring folders in the configuration file. | |
Recommended rules
Section titled “Recommended rules”- noBiomeFirstException (Severity: error)
- noDuplicateObjectKeys (Severity: error)
- noQuickfixBiome (Severity: information)
- useBiomeIgnoreFolder (Severity: warning)
Missing a rule? Help us by contributing to the analyzer or create a rule suggestion here.
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