New nursery lint: noReturnArrayPush (
9bd3527)
Adds a rule that flags using the return value of push()/unshift(), which is usually a mistaken assumption about what those methods return. Biome also wired the rule into config validation, ESLint migration, and docs/snapshots.
New nursery lint: noConsoleSpaces (19fbfb2)
Introduces a rule for trailing/leading spaces inside multi-argument console calls, where the logger already inserts its own separator. This prevents doubled spaces in output and is now part of Biome's config schema and migration mapping.
New nursery lint: noMagicArrayFlatDepth (cd716d3)
Adds a rule that discourages unexplained non-1 depth values passed to Array.prototype.flat(). It’s a targeted code-quality check with autofix-friendly rule plumbing and test coverage.
New nursery lint: noUnreadableIife (a384892)
Flags immediately-invoked arrow functions whose parenthesized body hurts readability. The implementation includes fix support and ESLint migration coverage.
New nursery lint: noUselessRecursion (0a963e4)
Adds a rule for self-recursive functions that could be replaced with iteration, helping avoid stack overflows and clearer control flow. The change also updates schema/config metadata and migration support.
New nursery lint: noYamlBooleanKeys (68770e0)
Adds a YAML-specific rule that rejects boolean keys like true: and false:. This closes off a subtle configuration/data modeling footgun and expands Biome's YAML analysis surface.
New nursery lint: useSvelteEventDispatcherTypes (f46411b)
Adds a Svelte rule that requires typed createEventDispatcher() usage in TypeScript components. That improves type safety for component events and rounds out Svelte rule support in the config selector and schema.
CSS property sorting now preserves cascade-sensitive order (
167bb00)
Biome updated its CSS property-ordering logic to better handle Recess-style ordering and avoid breaking cascade behavior when sorting declarations. This is a correctness fix for automatic property reordering, backed by new sort/override tests.
LSP now warns when configuration parsing fails (
301402f)
The language server now surfaces a warning when it can't load or parse the project configuration instead of silently stopping file processing. That should make broken config files much easier to diagnose in editors.
Editor settings lookups were streamlined (25a00a2)
Biome now resolves editor-settings directories once and checks them less often. This is a performance improvement in workspace/config handling that should reduce unnecessary filesystem work.
