Presets, Groups & Severity in Biome
From the Biome cheat sheet · Linter Rules · verified Aug 2026
Presets, Groups & Severity
Start from a preset, then adjust groups and individual rules.
json
{
"linter": {
"enabled": true,
"rules": {
"preset": "recommended",
"suspicious": {
"noExplicitAny": "warn"
},
"style": {
"useConst": "error"
}
}
}
}🟢 recommended is the default stable starting preset
📌 Nursery rules can change outside major releases
💡 Severity can be info, warn, error, on, or off
🔍 Individual rule settings override their group
linterrulespresetseverity
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