biome.jsonc

{
	"$schema": "https://biomejs.dev/schemas/1.9.4/schema.json",
	// Respect .gitignore so that locally-generated, untracked files are not
	// linted. Without this, `pnpm lint` fails on machine-specific files such as
	// .claude/settings.local.json, which CI never sees — so the failure only ever
	// happens on a developer's machine.
	"vcs": {
		"enabled": true,
		"clientKind": "git",
		"useIgnoreFile": true
	},
	"files": {
		"ignore": [
			"**/dist",
			"**/node_modules",
			"**/.wrangler",
			"**/worker-configuration.d.ts",
			// Generated load-test fixtures. `useIgnoreFile` above only reads the root
			// .gitignore, so the nested one under loadtest/ does not reach biome.
			"**/loadtest/.out",
			// Throwaway git worktrees created by tooling. They hold a second full
			// checkout, so without this `pnpm lint` reports another copy of the repo —
			// often with CRLF diagnostics that do not exist in the real tree, which
			// reads as "lint is broken" when nothing is wrong. Excluded via
			// .git/info/exclude rather than .gitignore, and biome reads neither.
			"**/.claude/worktrees"
		]
	},
	"linter": {
		"enabled": true,
		"rules": {
			"recommended": true,
			"style": { "noNonNullAssertion": "off" },
			"a11y": {
				"useButtonType": "off",
				"noAutofocus": "off",
				"useSemanticElements": "off",
				"useKeyWithClickEvents": "off"
			},
			"suspicious": { "noArrayIndexKey": "off", "noExplicitAny": "off" },
			"correctness": { "useExhaustiveDependencies": "off" }
		}
	},
	"formatter": {
		"enabled": true,
		"indentStyle": "tab"
	},
	"javascript": {
		"formatter": {
			"quoteStyle": "single",
			"semicolons": "always"
		}
	}
}