recommended vs performant

The two configs share files.includes, the formatter (except trailing commas), and these rules: noForEach, useLiteralKeys, noCommaOperator, noUnusedVariables, useExhaustiveDependencies, noNonNullAssertion, noParameterAssign, useTemplate, the style rules promoted to error, noAssignInExpressions, and noExplicitAny.

These settings differ:

Setting	recommended	performant
javascript.formatter.trailingCommas	not set (Biome default, all)	none
correctness/noUnusedImports	error, fix: safe	not set (Biome default: warn)
correctness/noInnerDeclarations	not set (Biome default: error)	warn
suspicious/noConsole	error; every console method except log is allowed	not set (console.log accepted)
suspicious/noVar	warn	off
assist.actions.source.organizeImports	on	off
Override: json.parser allows comments and trailing commas for frontmatter.json, .frontmatter/config/**/*.json, .vscode/**/*.json, tsconfig*.json	yes	no

Choose

• Pick recommended when you want unused imports to fail, console.log blocked, and imports sorted by biome check.
• Pick performant when you want trailing commas removed and the rules above relaxed.

Both configs set style/useNodejsImportProtocol to error, so import 'assert' fails in either.

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