Enable type-aware linting with oxlint

[Copilot]

Enables type-aware linting by adding the --type-aware flag to all oxlint commands and installing the oxlint-tsgolint dependency.

Changes

Configuration

• Added oxlint-tsgolint@^0.5.0 dev dependency
• Added --type-aware flag to lint, format, and lint-staged scripts
• Configured .oxlintrc.json overrides to disable type-aware rules for playground/**, test/**, and test files

Type Safety Fixes

• Enum comparisons: Use ExtractorLogLevel enum values instead of string literals
• Type guards: Replace filter(Boolean) with isTruthy<T> type predicate
• Unnecessary assertions: Remove as const on string literals
• Method references: Wrap unbound methods to avoid this scoping issues
• Async handling: Remove unnecessary await, add void to fire-and-forget promises

Example: Type-safe filtering

// Before
const plugins = [
  condition && pluginA(),
  condition && pluginB(),
].filter(Boolean) as Plugin[]

// After
function isTruthy<T>(value: T | false | null | undefined): value is T {
  return Boolean(value)
}

const plugins = [
  condition && pluginA(),
  condition && pluginB(),
].filter(isTruthy)  // Properly typed without assertion

Six type assertions remain with eslint-disable comments for cases involving external library types (TypeScript compiler API, Babel parser) and discriminated union patterns where TypeScript's type inference is limited.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Enable type aware linting</issue_title>
<issue_description>The repo should enable type aware linting.
To do so, add --type-aware to all oxlint scripts and commands.
The oxlint-tsgolint dev dependency has to be added to the root package.json
</issue_description>

<agent_instructions>Run pnpm lint after setting it up to discover if tests pass and that it works.
If there are failures coming from test/env files, or .test.ts files and similar it's ok to disable the new rule violations in the .oxlintrc.json file using overrides.
If the violation comes from ./packages/@sanity/pkg-utils/src then the code should be refactored to satisfy the linter rather than disabling the rule in any way.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Enable type aware linting #2171

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[changeset-bot]

🦋 Changeset detected

Latest commit: 5ad72a5

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@sanity/pkg-utils	Patch

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[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​oxlint-tsgolint@​0.5.0

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