fix(stylelint): Support stylelint 18 import

.changeset/quick-panels-expand.md

@@ -1,5 +0,0 @@
----
-"@navikt/ds-react": patch
----
-
-DataGrid: Faster rendering when many details panels are expanded.

.changeset/quiet-grids-focus.md

@@ -1,5 +0,0 @@
----
-"@navikt/ds-react": patch
----
-
-DataGrid.Table: Keyboard navigation no longer rebuilds the internal grid map on every arrow key press, improving responsiveness in large tables.

.changeset/quiet-options-wait.md

@@ -1,5 +0,0 @@
----
-"@navikt/ds-react": patch
----
-
-Combobox: Ignore option selection when an open Combobox becomes disabled.

.changeset/steady-timeline-rows.md

@@ -1,5 +0,0 @@
----
-"@navikt/ds-react": patch
----
-
-Timeline: Optimize period parsing.

.changeset/wise-plugins-resolve.md

@@ -0,0 +1,5 @@
+---
+"@navikt/aksel-stylelint": patch
+---
+
+Stylelint: `@navikt/aksel-stylelint/recommended` now references its plugin by explicit file path, fixing `Could not find "."` errors with Stylelint 18.

.github/copilot-instructions.md

@@ -21,7 +21,7 @@
 ## Repo summary
 
 - Nav's design system. Yarn 4 workspaces monorepo: published packages under `@navikt/` + docs site `aksel.nav.no/` + `apps/` + `tooling/`.
-- Stack: TypeScript 6, React 19 (dev), Next.js 16, Storybook 10, Vitest 5, Oxlint 1 (with ESLint plugins as JS plugins), Stylelint 17, Prettier 3 (formatting). Node 22+, Yarn 4.18.0.
+- Stack: TypeScript 6, React 19 (dev), Next.js 16, Storybook 10, Vitest 4, Oxlint 1 + ESLint 9, Stylelint 17, Biome 2 (lint only), Prettier 3 (formatting). Node 22+, Yarn 4.18.0.
 - Published `@navikt/*` packages must stay React 17 compatible (peer `react ^17 || ^18 || ^19`).
 
 ## Start and validate
@@ -44,7 +44,7 @@
 
 ## Commands
 
-- `corepack yarn oxlint --deny-warnings <files...>` / `corepack yarn stylelint <files...>`
+- `corepack yarn oxlint --deny-warnings <files...>` / `corepack yarn eslint --max-warnings=0 --no-warn-ignored <files...>` (both: oxlint runs most rules, ESLint the rest) / `corepack yarn stylelint <files...>` / `corepack yarn biome lint --no-errors-on-unmatched <files...>`
 - `corepack yarn tsc --noEmit --incremental false --project <tsconfig>` - targeted type-check
 - `corepack yarn workspace <name> <script>` - e.g. `@navikt/ds-react test` (Vitest + tsc), `website test`
 - `corepack yarn lint` / `corepack yarn test` / `corepack yarn boot` - root suites (slow; cross-workspace changes only)
@@ -63,7 +63,7 @@ Path-specific rules load automatically from `.github/instructions/` (see each `a
 - `@navikt/aksel/src/` - CLI and codemods
 - `aksel.nav.no/website/` - Next.js docs site · `aksel.nav.no/sanity-studio/` - CMS schema
 - `apps/playroom/`, `apps/mcp-server/`, `apps/figma-icon-plugin/` - apps · `tooling/` - ESLint plugin, scripts, changelog, analyzer
-- `.changeset/` - release notes · Root config: `oxlint.config.mts`, `stylelint.config.mjs`, `vitest.config.mts`, `.storybook/`
+- `.changeset/` - release notes · Root config: `.oxlintrc.json`, `eslint.config.js`, `stylelint.config.mjs`, `biome.json`, `vitest.config.mts`, `.storybook/`
 
 ## Skills and agents
 

.github/dependabot.yml

@@ -15,13 +15,24 @@ updates:
     registries:
       - npm-github
     groups:
+      next:
+        applies-to: version-updates
+        patterns:
+          - "@next/eslint-plugin-next"
+          - "next"
       sanity:
         applies-to: version-updates
         patterns:
           - "sanity"
           - "sanity-*"
           - "@sanity/*"
+          - "next-sanity"
           - "@portabletext/*"
+      eslint:
+        applies-to: version-updates
+        patterns:
+          - "eslint"
+          - "@eslint/*"
       react:
         applies-to: version-updates
         patterns:
@@ -37,13 +48,24 @@ updates:
           - "vitest"
           - "@vitest/*"
       # Security updates ignore version-update groups, so mirror them to keep lockstep packages together.
+      next-security:
+        applies-to: security-updates
+        patterns:
+          - "@next/eslint-plugin-next"
+          - "next"
       sanity-security:
         applies-to: security-updates
         patterns:
           - "sanity"
           - "sanity-*"
           - "@sanity/*"
+          - "next-sanity"
           - "@portabletext/*"
+      eslint-security:
+        applies-to: security-updates
+        patterns:
+          - "eslint"
+          - "@eslint/*"
       react-security:
         applies-to: security-updates
         patterns:

.github/instructions/code-syntax.instructions.md

@@ -1,11 +1,11 @@
 ---
-description: "JS/TS conventions not enforced by Oxlint: loops, export style and placement."
+description: "JS/TS conventions not enforced by ESLint/Biome: loops, export style and placement."
 applyTo: "**/*.ts,**/*.tsx,**/*.js,**/*.mts,**/*.mjs"
 ---
 
 # JS/TS conventions
 
-Formatting, import order and `import type` are handled by Prettier. Don't hand-tune them.
+Formatting, import order and `import type` are handled by Prettier and Biome. Don't hand-tune them.
 
 - Use `for...of` instead of `Array.forEach`. It supports `break`/`continue`/`await` and reads top-down.
 - Use named exports only. Keep type exports separate from value exports (`export { X }` / `export type { XProps }`).

.github/instructions/codemod.instructions.md

@@ -9,7 +9,7 @@ applyTo: "@navikt/aksel/**"
 - Every transform is registered in `src/migrations-config.ts` (`value`, `path` without extension, `description`, `ignoredExtensions`). `value` must be unique and is the public CLI name (`v8-accordion-variant`).
 - Test with fixtures: `tests/<fixture>.input.js` → `tests/<fixture>.output.js`, run via `check(__dirname, { fixture, migration })` from `src/codemod/utils/check.ts`. Output is compared after Prettier, so whitespace doesn't matter.
 - Reuse helpers in `src/codemod/utils/` (imports, props, JSX values, token translation) before writing new AST code.
-- Fixtures (`*.input.*`, `*.output.*`) are excluded from Oxlint and TypeScript. Don't "fix" them to match lint rules.
+- Fixtures (`*.input.*`, `*.output.*`) are excluded from ESLint and TypeScript. Don't "fix" them to match lint rules.
 - `src/version.ts` is generated by `build`. Don't edit it.
 - `tests/migrations.test.ts` checks `dist/`. Run `corepack yarn workspace @navikt/aksel build` before `test`, or new transforms fail with "transform-path" errors.
 - Consumer docs (`README.md`, website) show `npx @navikt/aksel ...` on purpose. Keep them.

.github/instructions/ds-react-component.instructions.md

@@ -11,7 +11,7 @@ For changes to component state, callbacks, async behavior, composition, semantic
 
 ## Compatibility (why: peer range is `react ^17 || ^18 || ^19`)
 
-- No React 18/19-only APIs. Oxlint `no-restricted-imports` blocks e.g. `React.useId`. Use the internal `useId`, `useClientLayoutEffect`, etc. from `utils-external/`.
+- No React 18/19-only APIs. ESLint `no-restricted-imports` blocks e.g. `React.useId`. Use the internal `useId`, `useClientLayoutEffect`, etc. from `utils-external/`.
 - Import React explicitly in TSX (`import React from "react"`). `tsconfig` uses classic `jsx: "react"`.
 - Component `index.ts` starts with `"use client"`.
 

.github/instructions/website.instructions.md

@@ -8,7 +8,7 @@ applyTo: "aksel.nav.no/website/**"
 - Both routers are in use: `app/` (App Router, `cacheComponents: true` in `next.config.ts`) and `pages/` (examples, templates, legacy). Stay in the router already used nearby. Don't move routes between them.
 - In `app/`, dynamic data needs Suspense or `"use cache"`, following nearby code. Cache Components errors at build time are real failures.
 - For website build, runtime, or performance issues, use the `website-debugging` skill to establish the cause before changing code.
-- `pages/eksempler/**` and `pages/templates/**` are public code snippets. Use the `website-example` skill. Oxlint rules `aksel-local/{import-check,comment-check,args-check}` enforce their shape.
+- `pages/eksempler/**` and `pages/templates/**` are public code snippets. Use the `website-example` skill. ESLint rules `aksel-local/{import-check,comment-check,args-check}` enforce their shape.
 - Reuse `@/` utils and components nearby before adding abstractions.
 - Examples/templates: `corepack yarn storybook:aksel` (no secrets). `corepack yarn dev` only for app behavior; it needs `SANITY_READ_NO_DRAFTS` and `NPM_AUTH_TOKEN`.
 - Never run `update:*`, `backup` or other Sanity-writing scripts unless asked. They write to the CMS.

.github/skills/aksel-local-validation/SKILL.md

@@ -19,7 +19,7 @@ Validate the smallest relevant surface with repository-pinned tools. Expand only
 - Do not add a dependency only to run a one-off check. If the task truly needs new tooling, add and lock it explicitly.
 - Public consumer docs may intentionally show `npx @navikt/aksel`. Preserve those examples unless the task changes consumer setup.
 - If Corepack/Yarn reports a user-level configuration error, stop and report it. Never edit configuration outside the repository.
-- Do not claim type safety from Oxlint or tests. Run a TypeScript-aware command when TypeScript behavior changed.
+- Do not claim type safety from ESLint or tests. Run a TypeScript-aware command when TypeScript behavior changed.
 
 ## 1. Determine affected projects
 
@@ -58,7 +58,9 @@ Group only matching files:
 
 ```sh
 corepack yarn oxlint --deny-warnings <changed .ts/.tsx/.js/.jsx files>
+corepack yarn eslint --max-warnings=0 --no-warn-ignored <changed .ts/.tsx/.js/.jsx files>
 corepack yarn stylelint <changed .css files>
+corepack yarn biome lint --no-errors-on-unmatched <changed supported source/config files>
 ```
 
 Do not pass unsupported file types to make a command appear comprehensive. Documentation-only changes need no code validation unless a documentation check exists.

.github/skills/code-review/SKILL.md

@@ -41,7 +41,7 @@ For changes to component state, callbacks, async behavior, composition, semantic
 - 🟡 **Suggestion**: should fix. Missing test, docs or changeset, maintainability risk, over-editing.
 - 💭 **Nit**: optional. Leave it out when in doubt.
 
-Skip anything Oxlint, Stylelint, Prettier or TypeScript already catches. No praise-only or speculative comments. Every finding says **why** it matters and what to do.
+Skip anything ESLint, Stylelint, Biome, Prettier or TypeScript already catches. No praise-only or speculative comments. Every finding says **why** it matters and what to do.
 
 ## Checklist
 

.github/skills/website-example/SKILL.md

@@ -4,7 +4,7 @@ description: >
   Add or update a code example or template shown on aksel.nav.no
   (aksel.nav.no/website/pages/eksempler/** or pages/templates/**). Use when
   asked to create a component example, demo, usage snippet or page template
-  for the documentation site, or when an example fails the aksel-local Oxlint
+  for the documentation site, or when an example fails the aksel-local ESLint
   rules or validate:eksempler.
 argument-hint: "Component group and example name, e.g. button/loading"
 ---
@@ -55,6 +55,7 @@ Hard rules (enforced by `tooling/eslint` rules `aksel-local/*`):
 
 ```sh
 corepack yarn oxlint --deny-warnings <file>
+corepack yarn eslint --max-warnings=0 --no-warn-ignored <file>
 corepack yarn workspace website validate:eksempler
 corepack yarn storybook:aksel   # visual check at :6007, needs no secrets
 ```
@@ -63,4 +64,4 @@ Never run `update:eksempler`. It writes to the Sanity CMS. Tell the user that a
 
 ## Done when
 
-Oxlint and `validate:eksempler` pass, and the story renders in `storybook:aksel`.
+ESLint and `validate:eksempler` pass, and the story renders in `storybook:aksel`.

.github/workflows/build-validation.yml

@@ -17,7 +17,7 @@ permissions:
 
 jobs:
   lint:
-    name: Lint (Oxlint, Stylelint etc.)
+    name: Lint (Oxlint, ESLint, Stylelint etc.)
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code

.oxlintrc.json

@@ -0,0 +1,467 @@
+{
+  "$schema": "./node_modules/oxlint/configuration_schema.json",
+  "plugins": ["react", "import"],
+  "categories": {
+    "correctness": "off"
+  },
+  "settings": {
+    "react": {
+      "version": "19.3.1"
+    }
+  },
+  "env": {
+    "builtin": true,
+    "es2026": true,
+    "browser": true,
+    "node": true
+  },
+  "ignorePatterns": [
+    "**/public",
+    "@navikt/aksel/**/*.input.*",
+    "@navikt/aksel/**/*.output.*",
+    "**/codemod/**/*.js",
+    "**/tokens/**/plugin.js",
+    "**/query-types.ts",
+    ".yarn",
+    "**/next-env.d.ts",
+    "@navikt/aksel-icons/src/**",
+    "@navikt/aksel/src/version.ts",
+    "@navikt/core/tailwind/{src/tokens.ts,tailwind.config.js,tailwind.darkside.config.js}",
+    "@navikt/core/tokens/token_docs.js",
+    "apps/playroom/{playroom.config.js,src/auto-generated-imports.ts}",
+    "**/.build",
+    "**/storybook-static",
+    "**/test-results",
+    "tooling/analyzer/temp",
+    "apps/figma-icon-plugin/src/ui/vite-env.d.ts"
+  ],
+  "rules": {
+    "constructor-super": "error",
+    "for-direction": "error",
+    "getter-return": "error",
+    "no-async-promise-executor": "error",
+    "no-case-declarations": "error",
+    "no-class-assign": "error",
+    "no-compare-neg-zero": "error",
+    "no-cond-assign": "error",
+    "no-const-assign": "error",
+    "no-constant-binary-expression": "error",
+    "no-constant-condition": "error",
+    "no-control-regex": "error",
+    "no-debugger": "error",
+    "no-delete-var": "error",
+    "no-dupe-class-members": "error",
+    "no-dupe-else-if": "error",
+    "no-dupe-keys": "error",
+    "no-duplicate-case": "error",
+    "no-empty": "error",
+    "no-empty-character-class": "error",
+    "no-empty-pattern": "error",
+    "no-empty-static-block": "error",
+    "no-ex-assign": "error",
+    "no-extra-boolean-cast": "error",
+    "no-fallthrough": "error",
+    "no-func-assign": "error",
+    "no-global-assign": "error",
+    "no-import-assign": "error",
+    "no-invalid-regexp": "error",
+    "no-irregular-whitespace": "error",
+    "no-loss-of-precision": "error",
+    "no-misleading-character-class": "error",
+    "no-new-native-nonconstructor": "error",
+    "no-nonoctal-decimal-escape": "error",
+    "no-obj-calls": "error",
+    "no-prototype-builtins": "error",
+    "no-redeclare": "error",
+    "no-regex-spaces": "error",
+    "no-self-assign": "error",
+    "no-setter-return": "error",
+    "no-shadow-restricted-names": "error",
+    "no-sparse-arrays": "error",
+    "no-this-before-super": "error",
+    "no-unassigned-vars": "error",
+    "no-unexpected-multiline": "error",
+    "no-unreachable": "error",
+    "no-unsafe-finally": "error",
+    "no-unsafe-negation": "error",
+    "no-unsafe-optional-chaining": "error",
+    "no-unused-labels": "error",
+    "no-unused-private-class-members": "error",
+    "no-unused-vars": "error",
+    "no-useless-backreference": "error",
+    "no-useless-catch": "error",
+    "no-useless-escape": "error",
+    "no-with": "error",
+    "preserve-caught-error": "error",
+    "require-yield": "error",
+    "use-isnan": "error",
+    "valid-typeof": "error",
+    "react/jsx-key": "error",
+    "react/jsx-no-comment-textnodes": "error",
+    "react/jsx-no-duplicate-props": "error",
+    "react/jsx-no-target-blank": "error",
+    "react/jsx-no-undef": "error",
+    "react/no-children-prop": "error",
+    "react/no-danger-with-children": "error",
+    "react/no-direct-mutation-state": "error",
+    "react/no-find-dom-node": "error",
+    "react/no-is-mounted": "error",
+    "react/no-render-return-value": "error",
+    "react/no-string-refs": "error",
+    "react/no-unescaped-entities": "error",
+    "react/no-unknown-property": "error",
+    "react/react-in-jsx-scope": "error",
+    "import/default": "error",
+    "import/no-named-as-default-member": "warn",
+    "import/no-duplicates": "warn",
+    "react/jsx-curly-brace-presence": [
+      "error",
+      {
+        "propElementValues": "always"
+      }
+    ],
+    "react/rules-of-hooks": "error",
+    "react/exhaustive-deps": [
+      "warn",
+      {
+        "additionalHooks": "(useClientLayoutEffect)"
+      }
+    ]
+  },
+  "overrides": [
+    {
+      "files": ["aksel.nav.no/sanity-studio/**"],
+      "rules": {
+        "react/react-in-jsx-scope": "off"
+      }
+    },
+    {
+      "files": [
+        "**/*.stories.{ts,tsx,js,jsx,mjs,cjs}",
+        "**/*.story.{ts,tsx,js,jsx,mjs,cjs}"
+      ],
+      "rules": {
+        "storybook/await-interactions": "error",
+        "storybook/context-in-play-function": "error",
+        "storybook/default-exports": "error",
+        "storybook/hierarchy-separator": "warn",
+        "storybook/no-redundant-story-name": "warn",
+        "storybook/no-renderer-packages": "error",
+        "storybook/prefer-pascal-case": "warn",
+        "storybook/story-exports": "error",
+        "storybook/use-storybook-expect": "error",
+        "storybook/use-storybook-testing-library": "error",
+        "import/no-anonymous-default-export": "off",
+        "react/rules-of-hooks": "off"
+      },
+      "jsPlugins": ["eslint-plugin-storybook"]
+    },
+    {
+      "files": ["**/.storybook/main.{js,cjs,mjs,ts}"],
+      "rules": {
+        "storybook/no-uninstalled-addons": "error"
+      },
+      "jsPlugins": ["eslint-plugin-storybook"]
+    },
+    {
+      "files": ["**/*.{ts,tsx}"],
+      "rules": {
+        "constructor-super": "off",
+        "getter-return": "off",
+        "no-class-assign": "off",
+        "no-const-assign": "off",
+        "no-dupe-class-members": "off",
+        "no-dupe-keys": "off",
+        "no-func-assign": "off",
+        "no-import-assign": "off",
+        "no-new-native-nonconstructor": "off",
+        "no-obj-calls": "off",
+        "no-redeclare": "off",
+        "no-setter-return": "off",
+        "no-this-before-super": "off",
+        "no-unreachable": "off",
+        "no-unsafe-negation": "off",
+        "no-with": "off",
+        "no-var": "error",
+        "prefer-const": "error",
+        "prefer-rest-params": "error",
+        "prefer-spread": "error",
+        "no-array-constructor": "error",
+        "no-unused-expressions": [
+          "error",
+          {
+            "allowShortCircuit": true,
+            "allowTernary": true
+          }
+        ],
+        "typescript/ban-ts-comment": "error",
+        "typescript/no-duplicate-enum-values": "error",
+        "typescript/no-empty-object-type": "error",
+        "typescript/no-explicit-any": "off",
+        "typescript/no-extra-non-null-assertion": "error",
+        "typescript/no-misused-new": "error",
+        "typescript/no-namespace": "error",
+        "typescript/no-non-null-asserted-optional-chain": "error",
+        "typescript/no-require-imports": "error",
+        "typescript/no-this-alias": "error",
+        "typescript/no-unnecessary-type-constraint": "error",
+        "typescript/no-unsafe-declaration-merging": "error",
+        "typescript/no-unsafe-function-type": "error",
+        "typescript/no-wrapper-object-types": "error",
+        "typescript/prefer-as-const": "error",
+        "typescript/prefer-namespace-keyword": "error",
+        "typescript/triple-slash-reference": "error",
+        "import/default": "off",
+        "import/no-named-as-default-member": "off"
+      },
+      "plugins": ["typescript"]
+    },
+    {
+      "files": ["**/*.test.*", "**/__tests__/*"],
+      "rules": {
+        "testing-library/await-async-events": [
+          "error",
+          {
+            "eventModule": "userEvent"
+          }
+        ],
+        "testing-library/await-async-queries": "error",
+        "testing-library/await-async-utils": "error",
+        "testing-library/no-await-sync-events": [
+          "error",
+          {
+            "eventModules": ["fire-event"]
+          }
+        ],
+        "testing-library/no-await-sync-queries": "error",
+        "testing-library/no-container": "error",
+        "testing-library/no-debugging-utils": "warn",
+        "testing-library/no-dom-import": ["error", "react"],
+        "testing-library/no-global-regexp-flag-in-query": "error",
+        "testing-library/no-manual-cleanup": "error",
+        "testing-library/no-node-access": "error",
+        "testing-library/no-promise-in-fire-event": "error",
+        "testing-library/no-render-in-lifecycle": "error",
+        "testing-library/no-unnecessary-act": "error",
+        "testing-library/no-wait-for-multiple-assertions": "error",
+        "testing-library/no-wait-for-side-effects": "error",
+        "testing-library/no-wait-for-snapshot": "error",
+        "testing-library/prefer-find-by": "error",
+        "testing-library/prefer-presence-queries": "error",
+        "testing-library/prefer-query-by-disappearance": "error",
+        "testing-library/prefer-screen-queries": "error",
+        "testing-library/render-result-naming-convention": "error",
+        "vitest/expect-expect": "error",
+        "vitest/no-commented-out-tests": "error",
+        "vitest/no-disabled-tests": "warn",
+        "vitest/no-focused-tests": "error",
+        "vitest/no-identical-title": "error",
+        "vitest/no-import-node-test": "error",
+        "vitest/no-interpolation-in-snapshots": "error",
+        "vitest/no-mocks-import": "error",
+        "vitest/no-standalone-expect": "error",
+        "vitest/no-unneeded-async-expect-function": "error",
+        "vitest/prefer-called-exactly-once-with": "error",
+        "vitest/require-local-test-context-for-concurrent-snapshots": "error",
+        "vitest/valid-describe-callback": "error",
+        "vitest/valid-expect": "error",
+        "vitest/valid-expect-in-promise": "error",
+        "vitest/valid-title": "error"
+      },
+      "jsPlugins": ["eslint-plugin-testing-library"],
+      "plugins": ["vitest"]
+    },
+    {
+      "files": ["aksel.nav.no/website/**"],
+      "rules": {
+        "react/no-unknown-property": [
+          "error",
+          {
+            "ignore": ["jsx", "global"]
+          }
+        ],
+        "react/react-in-jsx-scope": "off",
+        "nextjs/google-font-display": "warn",
+        "nextjs/google-font-preconnect": "warn",
+        "nextjs/next-script-for-ga": "warn",
+        "nextjs/no-async-client-component": "warn",
+        "nextjs/no-before-interactive-script-outside-document": "warn",
+        "nextjs/no-css-tags": "warn",
+        "nextjs/no-head-element": "warn",
+        "nextjs/no-img-element": "warn",
+        "nextjs/no-page-custom-font": "warn",
+        "nextjs/no-styled-jsx-in-document": "warn",
+        "nextjs/no-sync-scripts": "warn",
+        "nextjs/no-title-in-document-head": "warn",
+        "nextjs/no-typos": "warn",
+        "nextjs/no-unwanted-polyfillio": "warn",
+        "nextjs/inline-script-id": "error",
+        "nextjs/no-assign-module-variable": "error",
+        "nextjs/no-document-import-in-page": "error",
+        "nextjs/no-duplicate-head": "error",
+        "nextjs/no-head-import-in-document": "error",
+        "nextjs/no-script-component-in-head": "error"
+      },
+      "plugins": ["nextjs"]
+    },
+    {
+      "files": ["aksel.nav.no/website/pages/eksempler/**"],
+      "rules": {
+        "nextjs/no-img-element": "off"
+      },
+      "plugins": ["nextjs"]
+    },
+    {
+      "files": [
+        "aksel.nav.no/website/pages/eksempler/**/*.tsx",
+        "aksel.nav.no/website/pages/templates/**/*.tsx"
+      ],
+      "rules": {
+        "aksel-local/args-check": ["error"],
+        "aksel-local/comment-check": ["error"]
+      },
+      "jsPlugins": ["eslint-plugin-aksel-local"]
+    },
+    {
+      "files": [
+        "**/examples/__parts*/*.tsx",
+        "**/pages/templates/**/*.tsx",
+        "**/pages/eksempler/**/*.tsx"
+      ],
+      "rules": {
+        "aksel-local/import-check": ["error"]
+      },
+      "jsPlugins": ["eslint-plugin-aksel-local"]
+    },
+    {
+      "files": ["**/examples/__parts-inline/*.tsx"],
+      "rules": {
+        "arrow-body-style": ["error", "never"],
+        "func-style": ["error", "expression"],
+        "import/no-named-export": "error"
+      }
+    },
+    {
+      "files": ["@navikt/**"],
+      "rules": {
+        "no-restricted-imports": [
+          "error",
+          {
+            "paths": [
+              {
+                "name": "react",
+                "importNames": [
+                  "useId",
+                  "useInsertionEffect",
+                  "useSyncExternalStore",
+                  "useDeferredValue",
+                  "useTransition",
+                  "startTransition"
+                ],
+                "message": "React 18+ API not allowed. We currently only support React-features accesible in React 17. To add new features, we will need to update peerDependencies (breaking change)."
+              },
+              {
+                "name": "react",
+                "importNames": [
+                  "useOptimistic",
+                  "useActionState",
+                  "use",
+                  "cache",
+                  "useEffectEvent",
+                  "ViewTransition",
+                  "addTransitionType"
+                ],
+                "message": "React 19+ API not allowed. We currently only support React-features accesible in React 17. To add new features, we will need to update peerDependencies (breaking change)."
+              },
+              {
+                "name": "react-dom/client",
+                "importNames": ["createRoot", "hydrateRoot"],
+                "message": "React 18+ API not allowed (targeting React 17)."
+              },
+              {
+                "name": "react-dom",
+                "importNames": ["browser"],
+                "message": "React 19+ API not allowed (targeting React 17)."
+              }
+            ],
+            "patterns": [
+              {
+                "group": ["fs", "path"],
+                "message": "Use `node:` prefix when importing native node modules, e.g. `import path from \"node:path\"`."
+              },
+              {
+                "group": ["**/esm/**", "**/cjs/**"],
+                "message": "Do not import from build output directories. Import from source instead."
+              }
+            ]
+          }
+        ],
+        "no-restricted-properties": [
+          "error",
+          {
+            "object": "React",
+            "property": "useId",
+            "message": "React 18+ API not allowed (targeting React 17)."
+          },
+          {
+            "object": "React",
+            "property": "useInsertionEffect",
+            "message": "React 18+ API not allowed (targeting React 17)."
+          },
+          {
+            "object": "React",
+            "property": "useSyncExternalStore",
+            "message": "React 18+ API not allowed (targeting React 17)."
+          },
+          {
+            "object": "React",
+            "property": "useDeferredValue",
+            "message": "React 18+ API not allowed (targeting React 17)."
+          },
+          {
+            "object": "React",
+            "property": "useTransition",
+            "message": "React 18+ API not allowed (targeting React 17)."
+          },
+          {
+            "object": "React",
+            "property": "startTransition",
+            "message": "React 18+ API not allowed (targeting React 17)."
+          },
+          {
+            "object": "React",
+            "property": "useOptimistic",
+            "message": "React 19+ API not allowed (targeting React 17)."
+          },
+          {
+            "object": "React",
+            "property": "useActionState",
+            "message": "React 19+ API not allowed (targeting React 17)."
+          },
+          {
+            "object": "React",
+            "property": "use",
+            "message": "React 19+ API not allowed (targeting React 17)."
+          },
+          {
+            "object": "React",
+            "property": "cache",
+            "message": "React 19+ API not allowed (targeting React 17)."
+          },
+          {
+            "object": "React",
+            "property": "useEffectEvent",
+            "message": "React 19+ API not allowed (targeting React 17)."
+          }
+        ]
+      }
+    },
+    {
+      "files": ["@navikt/**/*.stories.tsx"],
+      "rules": {
+        "no-restricted-imports": "off",
+        "no-restricted-properties": "off"
+      }
+    }
+  ]
+}

.vscode/extensions.json

@@ -1,7 +1,9 @@
 {
   "recommendations": [
     "oxc.oxc-vscode",
+    "dbaeumer.vscode-eslint",
     "stylelint.vscode-stylelint",
+    "biomejs.biome",
     "esbenp.prettier-vscode",
     "denoland.vscode-deno",
     "github.vscode-github-actions",

.vscode/settings.json

@@ -1,5 +1,6 @@
 {
   "cssVariables.lookupFiles": ["@navikt/core/tokens/dist/tokens.css"],
+  "eslint.problems.shortenToSingleLine": true,
   "editor.defaultFormatter": "esbenp.prettier-vscode",
   "files.watcherExclude": {
     "**/.yarn/**": true,

@navikt/aksel-icons/.svgrrc.js

@@ -1,4 +1,3 @@
-// oxlint-disable-next-line typescript/no-require-imports
 const template = require("./config/template");
 
 module.exports = {

@navikt/aksel-icons/config/cleanTypes.js

@@ -1,7 +1,7 @@
 /**
  * Fikser https://github.com/navikt/aksel/issues/1758
  */
-// oxlint-disable-next-line typescript/no-require-imports
+
 const fs = require("node:fs");
 
 const basePath = "./dist/react/esm";

@navikt/aksel-icons/config/css-icons.js

@@ -1,4 +1,3 @@
-// oxlint-disable typescript/no-require-imports
 const fastglob = require("fast-glob");
 const kebabCase = require("lodash/kebabCase");
 const path = require("node:path");

@navikt/aksel-icons/config/index-template.js

@@ -1,4 +1,3 @@
-// oxlint-disable-next-line typescript/no-require-imports
 const path = require("node:path");
 
 const defaultIndexTemplate = (paths) => {

@navikt/aksel-icons/config/metadata.js

@@ -1,4 +1,3 @@
-// oxlint-disable typescript/no-require-imports
 const fastglob = require("fast-glob");
 const path = require("node:path");
 const { load, JSON_SCHEMA } = require("js-yaml");
@@ -16,6 +15,7 @@ ymlList.forEach((file) => {
   const ymlData = load(fs.readFileSync(`${basePath}/${file}`), {
     schema: JSON_SCHEMA,
   });
+  // biome-ignore lint/complexity/useOptionalChain: optional chain not supported in enviroment. Consider revriting to Typescript
   if (ymlData.keywords && ymlData.keywords.includes("[ignore-docs]")) {
     return;
   }

@navikt/aksel-icons/config/parse-svg.js

@@ -1,4 +1,3 @@
-// oxlint-disable typescript/no-require-imports
 const fastglob = require("fast-glob");
 const path = require("node:path");
 const {

@navikt/aksel-icons/config/zip.js

@@ -1,4 +1,3 @@
-// oxlint-disable typescript/no-require-imports
 const AdmZip = require("adm-zip");
 const {
   existsSync,

@navikt/aksel-icons/package.json

@@ -88,11 +88,11 @@
     "hast-util-select": "6.0.4",
     "js-yaml": "^5.5.0",
     "lodash": "4.18.1",
-    "prettier": "3.9.10",
+    "prettier": "3.9.6",
     "react": "19.3.1",
     "rehype-parse": "9.0.1",
     "svgo": "3.3.5",
-    "tsc-alias": "1.9.10",
+    "tsc-alias": "1.9.7",
     "tsx": "^4.23.15",
     "typescript": "6.0.3",
     "unified": "11.0.5",

@navikt/aksel-icons/util/useId.ts

@@ -1,4 +1,4 @@
-/* oxlint-disable react/rules-of-hooks -- `useId` is invariant at runtime */
+/* biome-ignore-all lint/correctness/useHookAtTopLevel: `useId` is invariant at runtime. */
 import React, { useEffect, useState } from "react";
 
 // https://github.com/mui/material-ui/blob/master/packages/mui-utils/src/useId.ts
@@ -14,7 +14,7 @@ function useGlobalId(idOverride?: string): string | undefined {
       // We can't use it server-side.
       // If you want to use random values please consider the Birthday Problem: https://en.wikipedia.org/wiki/Birthday_problem
       globalId += 1;
-      setDefaultId(`aksel-icon-${globalId}`);
+      setDefaultId(`aksel-icon-${globalId}`); // eslint-disable-line react-hooks/set-state-in-effect
     }
   }, [defaultId]);
   return id;
@@ -34,6 +34,6 @@ export function useId(idOverride?: string): string | undefined {
     const reactId = maybeReactUseId();
     return idOverride ?? reactId.replace(/(:)/g, "");
   }
-  // oxlint-disable-next-line react/rules-of-hooks -- `useId` is invariant at runtime.
+  // eslint-disable-next-line react-hooks/rules-of-hooks -- `useId` is invariant at runtime.
   return useGlobalId(idOverride) ?? "";
 }

@navikt/aksel-stylelint/src/recommended.ts

@@ -1,5 +1,5 @@
 export default {
-  plugins: ["."],
+  plugins: ["./index.js"],
   rules: {
     "aksel/design-token-exists": true,
     "aksel/no-internal-tokens": true,

@navikt/aksel/src/codemod/transforms/rename-prop/tests/rename.input.js

@@ -1,3 +1,4 @@
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <SpeechBubble illustration={<Illustration />}>

@navikt/aksel/src/codemod/transforms/rename-prop/tests/rename.output.js

@@ -1,3 +1,4 @@
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <SpeechBubble avatar={<Illustration />}>

@navikt/aksel/src/codemod/transforms/v1.0.0/chat/tests/complete.input.js

@@ -1,5 +1,6 @@
 import { SpeechBubble, Button } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <SpeechBubble

@navikt/aksel/src/codemod/transforms/v1.0.0/chat/tests/complete.output.js

@@ -1,5 +1,6 @@
 import { Chat, Button } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <Chat

@navikt/aksel/src/codemod/transforms/v1.0.0/chat/tests/idempotent.input.js

@@ -1,5 +1,6 @@
 import { Chat, Button } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <Chat

@navikt/aksel/src/codemod/transforms/v1.0.0/chat/tests/idempotent.output.js

@@ -1,5 +1,6 @@
 import { Chat, Button } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <Chat

@navikt/aksel/src/codemod/transforms/v1.0.0/chat/tests/props.input.js

@@ -1,4 +1,5 @@
 import { SpeechBubble, Button } from "@navikt/ds-react";
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <div>

@navikt/aksel/src/codemod/transforms/v1.0.0/chat/tests/props.output.js

@@ -1,4 +1,5 @@
 import { Chat, Button } from "@navikt/ds-react";
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <div>

@navikt/aksel/src/codemod/transforms/v1.0.0/chat/tests/renamed.input.js

@@ -1,4 +1,5 @@
 import { SpeechBubble as DsBubble, Button } from "@navikt/ds-react";
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <div>

@navikt/aksel/src/codemod/transforms/v1.0.0/chat/tests/renamed.output.js

@@ -1,4 +1,5 @@
 import { Chat as DsBubble, Button } from "@navikt/ds-react";
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <div>

@navikt/aksel/src/codemod/transforms/v3.0.0/copybutton/tests/alias.input.js

@@ -1,5 +1,6 @@
 import { CopyToClipboard as DsCpyButton } from "@navikt/ds-react-internal";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return <DsCpyButton></DsCpyButton>;
 };

@navikt/aksel/src/codemod/transforms/v3.0.0/copybutton/tests/alias.output.js

@@ -1,5 +1,6 @@
 import { CopyButton } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return <CopyButton />;
 };

@navikt/aksel/src/codemod/transforms/v3.0.0/copybutton/tests/children.input.js

@@ -1,5 +1,6 @@
 import { CopyToClipboard } from "@navikt/ds-react-internal";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <CopyToClipboard

@navikt/aksel/src/codemod/transforms/v3.0.0/copybutton/tests/children.output.js

@@ -1,5 +1,6 @@
 import { CopyButton } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <CopyButton copyText="Text to copy" size="medium" text="text">

@navikt/aksel/src/codemod/transforms/v3.0.0/copybutton/tests/cleanup.input.js

@@ -1,5 +1,6 @@
 import { CopyToClipboard } from "@navikt/ds-react-internal";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return <CopyToClipboard></CopyToClipboard>;
 };

@navikt/aksel/src/codemod/transforms/v3.0.0/copybutton/tests/cleanup.output.js

@@ -1,5 +1,6 @@
 import { CopyButton } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return <CopyButton />;
 };

@navikt/aksel/src/codemod/transforms/v3.0.0/copybutton/tests/complete.input.js

@@ -1,5 +1,6 @@
 import { CopyToClipboard } from "@navikt/ds-react-internal";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return (
     <CopyToClipboard

@navikt/aksel/src/codemod/transforms/v3.0.0/copybutton/tests/complete.output.js

@@ -1,5 +1,6 @@
 import { CopyButton } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return <CopyButton copyText="Text to copy" size="medium" text="text" />;
 };

@navikt/aksel/src/codemod/transforms/v3.0.0/copybutton/tests/idempotent.input.js

@@ -1,5 +1,6 @@
 import { CopyButton } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return <CopyButton copyText="Text to copy" size="medium" text={props.text} />;
 };

@navikt/aksel/src/codemod/transforms/v3.0.0/copybutton/tests/idempotent.output.js

@@ -1,5 +1,6 @@
 import { CopyButton } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return <CopyButton copyText="Text to copy" size="medium" text={props.text} />;
 };

@navikt/aksel/src/codemod/transforms/v3.0.0/copybutton/tests/import.input.js

@@ -1,6 +1,7 @@
 import { CopyToClipboard, Dropdown } from "@navikt/ds-react-internal";
 import { Button } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return <CopyToClipboard></CopyToClipboard>;
 };

@navikt/aksel/src/codemod/transforms/v3.0.0/copybutton/tests/import.output.js

@@ -1,6 +1,7 @@
 import { Dropdown } from "@navikt/ds-react-internal";
 import { Button, CopyButton } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const Page = () => {
   return <CopyButton />;
 };

@navikt/aksel/src/codemod/transforms/v4.0.0/date/tests/complete.input.js

@@ -6,6 +6,7 @@ import {
   UNSAFE_useRangeDatepicker,
 } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const UseDatepicker = () => {
   const { datepickerProps, inputProps } = UNSAFE_useDatepicker({
     fromDate: new Date("Aug 23 2019"),

@navikt/aksel/src/codemod/transforms/v4.0.0/date/tests/complete.output.js

@@ -6,6 +6,7 @@ import {
   useRangeDatepicker,
 } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const UseDatepicker = () => {
   const { datepickerProps, inputProps } = useDatepicker({
     fromDate: new Date("Aug 23 2019"),

@navikt/aksel/src/codemod/transforms/v4.0.0/date/tests/idempotent.input.js

@@ -6,6 +6,7 @@ import {
   useRangeDatepicker,
 } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const UseDatepicker = () => {
   const { datepickerProps, inputProps } = useDatepicker({
     fromDate: new Date("Aug 23 2019"),

@navikt/aksel/src/codemod/transforms/v4.0.0/date/tests/idempotent.output.js

@@ -6,6 +6,7 @@ import {
   useRangeDatepicker,
 } from "@navikt/ds-react";
 
+/* eslint-disable react/jsx-no-undef */
 export const UseDatepicker = () => {
   const { datepickerProps, inputProps } = useDatepicker({
     fromDate: new Date("Aug 23 2019"),

@navikt/aksel/src/codemod/utils/tests/jsx-string-value.test.ts

@@ -37,7 +37,7 @@ describe("getJSXLiteralValue", () => {
   });
 
   test("returns null for TemplateLiteral with expressions", () => {
-    // oxlint-disable-next-line no-template-curly-in-string -- Testing only
+    // biome-ignore lint/suspicious/noTemplateCurlyInString: Testing only
     const node = getAttrValue("<Component prop={`hello ${name}`} />");
     expect(getJSXLiteralValue(node)).toBe(null);
   });

@navikt/aksel/src/codemod/v8-tokens/config/tests/token-regex.test.ts

@@ -209,7 +209,7 @@ describe("getTokenRegex JS", () => {
 
     expect("ATextRed").toMatch(regex);
     expect(" ATextRed ").toMatch(regex);
-    // oxlint-disable-next-line no-template-curly-in-string -- Testing token match inside template string
+    // biome-ignore lint/suspicious/noTemplateCurlyInString: Testing token match inside template string
     expect(" background: `${ATextRed}` ").toMatch(regex);
   });
 

@navikt/aksel/src/codemod/v8-tokens/transforms/tests/token-boundaries.test.ts

@@ -26,7 +26,7 @@ describe("v8-tokens-js keeps boundaries intact", () => {
     ["const a = ASurfaceDefault;", "const a = BgDefault;"],
     ["const a = [ASurfaceDefault];", "const a = [BgDefault];"],
     ["const a = {...ASurfaceDefault};", "const a = {...BgDefault};"],
-    // oxlint-disable-next-line no-template-curly-in-string -- Testing token inside template literal
+    // biome-ignore lint/suspicious/noTemplateCurlyInString: Testing token inside template literal
     ["const a = `${ASurfaceDefault}`;", "const a = `${BgDefault}`;"],
   ])("%s", (input, output) => {
     expect(runJs(`${importLine}\n${input}`)).toBe(

@navikt/core/css/config/get-version.js

@@ -1,4 +1,3 @@
-// oxlint-disable-next-line typescript/no-require-imports
 const packageJson = require("../package.json");
 
 /* Make package-version accessible for github-workflow */

@navikt/core/css/src/primitives/page.css

@@ -2,6 +2,7 @@
   display: flex;
   flex-direction: column;
   min-height: 100vh;
+  /* biome-ignore lint/suspicious/noDuplicateProperties: vh is fallback for browsers that do not support lvh */
   min-height: 100lvh;
 }
 
@@ -19,6 +20,7 @@
 
 .aksel-page__content--fullheight {
   min-height: 100vh;
+  /* biome-ignore lint/suspicious/noDuplicateProperties: vh is fallback for browsers that do not support lvh */
   min-height: 100lvh;
 }
 

@navikt/core/react/package.json

@@ -811,7 +811,7 @@
     "react-dom": "19.3.1",
     "rimraf": "6.1.3",
     "swr": "^2.4.2",
-    "tsc-alias": "1.9.10",
+    "tsc-alias": "1.9.7",
     "tsx": "^4.23.15",
     "typescript": "6.0.3",
     "vitest": "5.0.5"

@navikt/core/react/src/action-menu/shortcut/ActionMenuShortcutInternal.tsx

@@ -16,8 +16,10 @@ const ActionMenuShortcut = ({ children }: ShortcutProps) => {
     <ActionMenuMarker placement="right">
       {parsed.map((char, index) => (
         <span
-          // oxlint-disable-next-line react/no-array-index-key -- This is a static list of characters, so using the index as a key is acceptable in this case
-          key={`${children}-${index}-${char}`}
+          key={`${children}-${
+            // biome-ignore lint/suspicious/noArrayIndexKey: This is a static list of characters, so using the index as a key is acceptable in this case
+            index
+          }-${char}`}
           className="aksel-action-menu__shortcut"
         >
           {char}

@navikt/core/react/src/badge/Badge.tsx

@@ -107,14 +107,14 @@ function normalizeCount(value: number, fallback: number) {
   return Number.isFinite(value) ? Math.max(0, Math.floor(value)) : fallback;
 }
 
-// oxlint-disable-next-line typescript/no-namespace
+// eslint-disable-next-line @typescript-eslint/no-namespace
 export namespace Badge {
   export type Props = BadgeProps;
 }
 
 /** @deprecated Badge is no longer in preview. Import it from `@navikt/ds-react` instead. */
 const BadgeDeprecated = Badge;
-// oxlint-disable-next-line typescript/no-namespace
+// eslint-disable-next-line @typescript-eslint/no-namespace
 namespace BadgeDeprecated {
   export type Props = BadgeProps;
 }

@navikt/core/react/src/chips/removable/ChipsRemovable.tsx

@@ -43,7 +43,6 @@ const ChipsRemovable = forwardRef<HTMLButtonElement, ChipsRemovableProps>(
         data-color={color ?? variantToColor(variant)}
         {...rest}
         ref={ref}
-        // oxlint-disable-next-line react/button-has-type
         type={type}
         className={cl(
           "aksel-chips__chip aksel-chips__removable aksel-chips--icon-right",

@navikt/core/react/src/data-grid-preferences/root/DataGridPreferencesRoot.tsx

@@ -109,17 +109,16 @@ const DataGridPreferencesRoot = forwardRef<
      * with column labels from `columnDefinitions`. Falls back to all columns
      * visible in definition order when `columnDisplay` is unset.
      */
-    const columnDisplay = tableSettings?.columnDisplay;
     const columnEntries = useMemo((): DataGridPreferencesColumnDisplay[] => {
       const display =
-        columnDisplay ??
+        tableSettings?.columnDisplay ??
         columnDefinitions.map((col) => ({ id: col.id, visible: true }));
 
       return display.flatMap(({ id, visible }) => {
         const label = columnDefinitionMap.get(id);
         return label ? [{ id, label, visible }] : [];
       });
-    }, [columnDefinitionMap, columnDisplay, columnDefinitions]);
+    }, [columnDefinitionMap, tableSettings?.columnDisplay, columnDefinitions]);
 
     const handleColumnsChange = useCallback(
       (columns: DataGridPreferencesColumnDisplay[]) => {
@@ -222,7 +221,7 @@ function isFieldVisible(
   return fields?.[key] !== false;
 }
 
-// oxlint-disable-next-line typescript/no-namespace
+// eslint-disable-next-line @typescript-eslint/no-namespace
 export namespace DataGridPreferencesRoot {
   export type Props = DataGridPreferencesProps;
 }

@navikt/core/react/src/data-grid/root/DataGridRoot.tsx

@@ -138,16 +138,16 @@ const DataGrid = DataGridInternal as unknown as DataGridComponent;
 DataGrid.Table = DataGridTable;
 DataGrid.Preferences = DataGridPreferences;
 
-// oxlint-disable-next-line typescript/no-namespace
+// eslint-disable-next-line @typescript-eslint/no-namespace
 export namespace DataGrid {
   export type Props<T = unknown> = DataGridProps<T>;
   export type Columns<T = unknown> = ColumnDefinitions<T>;
   export type Selection<T = unknown> = SelectionProps<T>;
   export type Settings = DataGridSettings;
 
-  // oxlint-disable-next-line typescript/no-namespace
+  // eslint-disable-next-line @typescript-eslint/no-namespace
   export namespace Table {
-    // oxlint-disable-next-line no-shadow -- intentional namespace re-export
+    // biome-ignore lint/suspicious/noShadow: intentional namespace re-export
     export type Props<T = unknown> = DataGridTable.Props<T>;
     export type Sorting = DataGridTable.Sorting;
     export type SortEntry = DataGridTable.SortEntry;
@@ -157,9 +157,9 @@ export namespace DataGrid {
     export type DetailsPanel<T = unknown> = DataGridTable.DetailsPanel<T>;
   }
 
-  // oxlint-disable-next-line typescript/no-namespace
+  // eslint-disable-next-line @typescript-eslint/no-namespace
   export namespace Preferences {
-    // oxlint-disable-next-line no-shadow -- intentional namespace re-export
+    // biome-ignore lint/suspicious/noShadow: intentional namespace re-export
     export type Props = DataGridPreferences.Props;
   }
 }

@navikt/core/react/src/data/drag-and-drop/root/DragAndDropRoot.tsx

@@ -1,3 +1,4 @@
+/** biome-ignore-all lint/correctness/useHookAtTopLevel: False positive because of the way forwardRef() is added */
 import React, {
   forwardRef,
   useCallback,

@navikt/core/react/src/data/stories/DataTable.tests.stories.tsx

@@ -1,6 +1,6 @@
 import type { Meta, StoryObj } from "@storybook/react-vite";
 import React from "react";
-import { expect, fn, userEvent, within } from "storybook/test";
+import { expect, userEvent, within } from "storybook/test";
 import { DataGrid } from "../../data-grid";
 import type { ColumnDefinitions } from "../table/root/DataGridTable.types";
 import { DataGridTable } from "../table/root/DataGridTableRoot";
@@ -228,78 +228,3 @@ export const SelectAllIncludesHiddenDescendantsForCollapsedParents: Story = {
     expect(getCheckboxes(canvasElement)[3].checked).toBe(false);
   },
 };
-
-const detailsPanelData: TestRow[] = [
-  { id: "a", name: "Alpha" },
-  { id: "b", name: "Beta" },
-  { id: "c", name: "Gamma" },
-];
-
-function ControlledDetailsPanel({
-  onExpandedRowIdsChange,
-}: {
-  onExpandedRowIdsChange: (ids: string[]) => void;
-}) {
-  const [expandedRowIds, setExpandedRowIds] = React.useState(["a"]);
-
-  return (
-    <DataGrid
-      columns={columns}
-      data={detailsPanelData}
-      getRowId={(row) => row.id}
-    >
-      <DataGrid.Table<TestRow>
-        detailsPanel={{
-          getContent: (row) => `Detaljer for ${row.name}`,
-          isRowExpandable: (row) => row.id !== "c",
-          expandedRowIds,
-          onExpandedRowIdsChange: (ids) => {
-            onExpandedRowIdsChange(ids);
-            setExpandedRowIds(ids);
-          },
-          showExpandAll: true,
-        }}
-      />
-    </DataGrid>
-  );
-}
-
-export const ControlledDetailsPanelExpansion: StoryObj<{
-  onExpandedRowIdsChange: ReturnType<typeof fn>;
-}> = {
-  args: {
-    onExpandedRowIdsChange: fn(),
-  },
-  render: (props) => <ControlledDetailsPanel {...props} />,
-  play: async ({ canvasElement, args }) => {
-    args.onExpandedRowIdsChange.mockClear();
-    const canvas = within(canvasElement);
-
-    expect(canvas.getByText("Detaljer for Alpha")).toBeInTheDocument();
-    expect(canvas.queryByText("Detaljer for Beta")).not.toBeInTheDocument();
-    expect(
-      canvas.getByRole("button", { name: "Vis alle rader" }),
-    ).toHaveAttribute("aria-expanded", "false");
-
-    await userEvent.click(canvas.getByRole("button", { name: "Vis detaljer" }));
-
-    expect(args.onExpandedRowIdsChange).toHaveBeenLastCalledWith(["a", "b"]);
-    expect(canvas.getByText("Detaljer for Beta")).toBeInTheDocument();
-
-    await userEvent.click(
-      canvas.getByRole("button", { name: "Skjul alle rader" }),
-    );
-
-    expect(args.onExpandedRowIdsChange).toHaveBeenLastCalledWith([]);
-    expect(canvas.queryByText("Detaljer for Alpha")).not.toBeInTheDocument();
-    expect(canvas.queryByText("Detaljer for Beta")).not.toBeInTheDocument();
-
-    await userEvent.click(
-      canvas.getByRole("button", { name: "Vis alle rader" }),
-    );
-
-    expect(args.onExpandedRowIdsChange).toHaveBeenLastCalledWith(["a", "b"]);
-    expect(canvas.queryByText("Detaljer for Gamma")).not.toBeInTheDocument();
-    expect(args.onExpandedRowIdsChange).toHaveBeenCalledTimes(3);
-  },
-};

@navikt/core/react/src/data/table/column-header/useTableColumnResize.ts

@@ -139,6 +139,7 @@ function useTableColumnResize({
     [resizeMin, resizeMax, setWidth],
   );
 
+  // biome-ignore lint/correctness/useExhaustiveDependencies: We only want to run this on mount and when autoResizeOnce changes
   useEffect(
     function autoResizeColumn() {
       if (!autoResizeOnce) {
@@ -150,7 +151,7 @@ function useTableColumnResize({
         setClampedWidth(pxToRelativeWidth(newColumnWidth));
       }
     },
-    [autoResizeOnce], // oxlint-disable-line react/exhaustive-deps
+    [autoResizeOnce], // eslint-disable-line react-hooks/exhaustive-deps
   );
 
   const handleOnClick: DOMAttributes<HTMLButtonElement>["onClick"] =

@navikt/core/react/src/data/table/hooks/useGridCache.ts

@@ -5,9 +5,7 @@ import { type GridCache, buildTableGridMap } from "../helpers/table-grid-nav";
 /**
  * Manages the table grid cache and observes DOM changes that require grid rebuilding.
  * Watches for structural changes (rows/cells added/removed) and attribute changes
- * (colspan, rowspan, hidden) that affect grid layout.
- * Inline `style` is intentionally not observed: focus navigation writes
- * scroll-margin on every move, and the grid never reads styles.
+ * (colspan, rowspan, hidden, style) that affect grid layout and focusability.
  */
 function useGridCache(tableRef: HTMLTableElement | null, enabled: boolean) {
   const gridCacheRef = useRef<GridCache>({
@@ -36,7 +34,7 @@ function useGridCache(tableRef: HTMLTableElement | null, enabled: boolean) {
       subtree: true,
       childList: true,
       attributes: true,
-      attributeFilter: ["colspan", "rowspan", "hidden"],
+      attributeFilter: ["colspan", "rowspan", "hidden", "style"],
     });
 
     return () => {

@navikt/core/react/src/data/table/hooks/useTableDetailsPanel.tsx

@@ -76,15 +76,10 @@ function DataTableDetailsPanelProvider<T>({
     showExpandAll = false,
   } = detailsPanel || {};
 
-  const controlledExpandedIds = React.useMemo(
-    () => (expandedRowIds ? new Set(expandedRowIds) : undefined),
-    [expandedRowIds],
-  );
-
-  const [expandedIds, setExpandedIds] = useControllableState<Set<string>>({
-    value: controlledExpandedIds,
-    defaultValue: () => new Set(defaultExpandedRowIds),
-    onChange: (ids) => onExpandedRowIdsChange?.(Array.from(ids)),
+  const [expandedIds, setExpandedIds] = useControllableState({
+    value: expandedRowIds,
+    defaultValue: defaultExpandedRowIds,
+    onChange: onExpandedRowIdsChange,
   });
 
   /* TODO: False is just fallback until auto and root is merged */
@@ -121,7 +116,8 @@ function DataTableDetailsPanelProvider<T>({
   );
 
   const isExpanded = useCallback(
-    (id: string) => isDetailsPanelExpandableById(id) && expandedIds.has(id),
+    (id: string) =>
+      isDetailsPanelExpandableById(id) && expandedIds.includes(id),
     [expandedIds, isDetailsPanelExpandableById],
   );
 
@@ -131,35 +127,21 @@ function DataTableDetailsPanelProvider<T>({
         return;
       }
 
-      setExpandedIds((currentExpandedIds) => {
-        const nextExpandedIds = new Set(currentExpandedIds);
-        if (nextExpandedIds.has(id)) {
-          nextExpandedIds.delete(id);
-        } else {
-          nextExpandedIds.add(id);
-        }
-        return nextExpandedIds;
-      });
+      setExpandedIds((currentExpandedIds) =>
+        currentExpandedIds.includes(id)
+          ? currentExpandedIds.filter((expandedId) => expandedId !== id)
+          : [...currentExpandedIds, id],
+      );
     },
     [isDetailsPanelExpandableById, setExpandedIds],
   );
 
-  const isAllExpanded = React.useMemo(() => {
-    if (expandableIds.size === 0) {
-      return false;
-    }
-
-    for (const id of expandableIds) {
-      if (!expandedIds.has(id)) {
-        return false;
-      }
-    }
-
-    return true;
-  }, [expandableIds, expandedIds]);
+  const isAllExpanded =
+    expandableIds.size > 0 &&
+    Array.from(expandableIds).every((key) => expandedIds.includes(key));
 
   const toggleAll = useCallback(() => {
-    setExpandedIds(isAllExpanded ? new Set() : new Set(expandableIds));
+    setExpandedIds(isAllExpanded ? [] : Array.from(expandableIds));
   }, [expandableIds, isAllExpanded, setExpandedIds]);
 
   return (

@navikt/core/react/src/data/table/root/DataGridTableRoot.tsx

@@ -599,7 +599,7 @@ const DataGridTable = DataGridTableInternal as <RowT>(
   props: DataGridTableProps<RowT> & React.RefAttributes<HTMLTableElement>,
 ) => React.ReactElement | null;
 
-// oxlint-disable-next-line typescript/no-namespace
+// eslint-disable-next-line @typescript-eslint/no-namespace
 export namespace DataGridTable {
   export type Props<T = unknown> = DataGridTableProps<T>;
   export type Sorting = TableSortOptions;

@navikt/core/react/src/data/token-filter/TokenFilter.tsx

@@ -220,6 +220,7 @@ export const TokenFilter = forwardRef<HTMLDivElement, TokenFilterProps>(
     );
 
     return (
+      // biome-ignore lint/a11y/useSemanticElements: search-tag is too new (baseline 2023)
       <div
         ref={ref}
         className={cl("aksel-property-filter", className)}

@navikt/core/react/src/data/token-filter/helpers/grouping.ts

@@ -61,7 +61,7 @@ function createGroups<T>(
   }
 
   /* Custom groups first, then default group if it has items */
-  const groups: OptionGroup<T>[] = Object.values(customGroups);
+  const groups: OptionGroup<T>[] = [...Object.values(customGroups)];
 
   if (defaultGroup.options.length > 0) {
     groups.push(defaultGroup);

@navikt/core/react/src/datepicker/DatePicker.stories.tsx

@@ -49,15 +49,16 @@ export const Default: StoryObj<DefaultStoryProps> = {
       toDate: new Date("Aug 23 2029"),
     });
 
-    const newProps =
-      !props.inputfield || props.mode === "multiple"
+    const newProps = {
+      ...(!props.inputfield || props.mode === "multiple"
         ? {
             open,
             onClose: () => setOpen(false),
             fromDate: new Date("Aug 23 2020"),
             toDate: new Date("Aug 23 2029"),
           }
-        : {};
+        : {}),
+    };
 
     const Comp = !props.standalone ? DatePicker : DatePicker.Standalone;
 

@navikt/core/react/src/datepicker/DatePicker.tests.stories.tsx

@@ -112,7 +112,6 @@ export const ControlledMonthPreservesFocus: Story = {
     );
 
     return (
-      // oxlint-disable-next-line jsx-a11y/no-noninteractive-element-interactions
       <fieldset
         onKeyDown={(event) => {
           if (event.key.toLowerCase() === "j") {

@navikt/core/react/src/datepicker/day-button/DatePickerDayButtonInternal.tsx

@@ -49,7 +49,6 @@ const DatePickerDayButton = ({
         "rdp-day_outside": modifiers.outside,
         "rdp-day__weekend": modifiers.weekend,
       })}
-      type="button"
     >
       <div className="rdp-day__inner">{children}</div>
     </button>

@navikt/core/react/src/datepicker/root/useDatepicker.tsx

@@ -142,7 +142,6 @@ export const useDatepicker = (
     locale: _locale,
     required,
     defaultSelected: _defaultSelected,
-    // oxlint-disable-next-line react/purity -- Defaults `today` to the current date.
     today = new Date(),
     fromDate,
     toDate,

@navikt/core/react/src/datepicker/root/useRangeDatepicker.tsx

@@ -220,7 +220,6 @@ export const useRangeDatepicker = (
   const {
     locale: _locale,
     defaultSelected: _defaultSelected,
-    // oxlint-disable-next-line react/purity -- Defaults `today` to the current date.
     today = new Date(),
     fromDate,
     toDate,

@navikt/core/react/src/datepicker/week-row/DatePickerWeekRowInternal.tsx

@@ -23,7 +23,7 @@ const DatePickerWeekRow = ({
 
   return (
     <Show below="sm" asChild>
-      {/* oxlint-disable-next-line jsx-a11y/no-noninteractive-element-to-interactive-role -- role="grid" improves a11y reading */}
+      {/** biome-ignore lint/a11y/noNoninteractiveElementToInteractiveRole: role="grid" improves a11y reading */}
       <table className="rdp-table" role="grid">
         <tbody className="rdp-tbody">
           <tr className="rdp-row aksel-date__week-row">

@navikt/core/react/src/form/checkbox-card/CheckboxCard.tsx

@@ -32,7 +32,7 @@ const CheckboxCard = forwardRef<HTMLInputElement, CheckboxCardProps>(
   },
 );
 
-// oxlint-disable-next-line typescript/no-namespace
+// eslint-disable-next-line @typescript-eslint/no-namespace
 export namespace CheckboxCard {
   export type Props = CheckboxCardProps;
 }

@navikt/core/react/src/form/checkbox-card/CheckboxCardGroup.tsx

@@ -28,7 +28,7 @@ const CheckboxCardGroup = forwardRef<
   />
 ));
 
-// oxlint-disable-next-line typescript/no-namespace
+// eslint-disable-next-line @typescript-eslint/no-namespace
 export namespace CheckboxCardGroup {
   export type Props = CheckboxCardGroupProps;
 }

@navikt/core/react/src/form/checkbox/Checkbox.tsx

@@ -26,7 +26,8 @@ export const Checkbox = forwardRef<HTMLInputElement, CheckboxProps>(
       props;
 
     return (
-      // oxlint-disable-next-line jsx-a11y/click-events-have-key-events, jsx-a11y/no-static-element-interactions -- clickable div for checkbox card
+      // biome-ignore lint/a11y/noStaticElementInteractions: clickable div for checkbox card
+      // biome-ignore lint/a11y/useKeyWithClickEvents: clickable div for checkbox card
       <div
         className={cl(className, "aksel-checkbox", `aksel-checkbox--${size}`, {
           "aksel-checkbox--error": hasError,

@navikt/core/react/src/form/combobox/ComboboxWrapper.tsx

@@ -42,6 +42,7 @@ const ComboboxWrapper = ({
   }
 
   return (
+    // biome-ignore lint/a11y/noStaticElementInteractions: Wrapper for combobox input and chips.
     <div
       ref={wrapperRef}
       className={cl(

@navikt/core/react/src/form/combobox/FilteredOptions/AddNewOption.tsx

@@ -52,7 +52,7 @@ const AddNewOption = () => {
             activeDescendantId === filteredOptionsUtil.getAddNewOptionId(id),
         },
       )}
-      // oxlint-disable-next-line jsx-a11y/no-noninteractive-element-to-interactive-role -- List item acts as an option in the combobox
+      // biome-ignore lint/a11y/noNoninteractiveElementToInteractiveRole: List item acts as an option in the combobox.
       role="option"
       aria-selected={false}
     >

@navikt/core/react/src/form/combobox/FilteredOptions/FilteredOptions.tsx

@@ -113,7 +113,7 @@ const FilteredOptions = () => {
         {shouldRenderFilteredOptionsList && (
           <ul
             ref={setFilteredOptionsRef}
-            // oxlint-disable-next-line jsx-a11y/no-noninteractive-element-to-interactive-role -- The <ul> element acts as a listbox in the combobox
+            // biome-ignore lint/a11y/noNoninteractiveElementToInteractiveRole: The <ul> element acts as a listbox in the combobox.
             role="listbox"
             tabIndex={-1}
             className="aksel-combobox__list-options"

@navikt/core/react/src/form/combobox/FilteredOptions/FilteredOptionsItem.tsx

@@ -76,7 +76,7 @@ const FilteredOptionsItem = ({ option }: { option: ComboboxOption }) => {
           toggleIsListOpen(false);
         }
       }}
-      // oxlint-disable-next-line jsx-a11y/no-noninteractive-element-to-interactive-role -- List item acts as an option in the combobox
+      // biome-ignore lint/a11y/noNoninteractiveElementToInteractiveRole: List item acts as an option in the combobox.
       role="option"
       aria-selected={isInList(option.value, selectedOptions)}
       aria-disabled={isDisabled(option) || undefined}

@navikt/core/react/src/form/combobox/Input/InputController.tsx

@@ -26,9 +26,9 @@ export const InputController = forwardRef<
   >
 >((props, ref) => {
   const {
-    // oxlint-disable-next-line typescript/no-unused-vars -- Remove when prop has been removed from ComboboxProps.
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars -- Remove when prop has been removed from ComboboxProps.
     clearButton,
-    // oxlint-disable-next-line typescript/no-unused-vars -- Remove when prop has been removed from ComboboxProps.
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars -- Remove when prop has been removed from ComboboxProps.
     clearButtonLabel,
     toggleListButton = true,
     inputClassName,
@@ -54,7 +54,8 @@ export const InputController = forwardRef<
 
   return (
     <Floating.Anchor asChild ref={setAnchorRef}>
-      {/* oxlint-disable-next-line jsx-a11y/click-events-have-key-events, jsx-a11y/no-static-element-interactions -- key-events are handled by input itself */}
+      {/** biome-ignore lint/a11y/noStaticElementInteractions: Acts as wrapper list-toggle and input */}
+      {/** biome-ignore lint/a11y/useKeyWithClickEvents: key-events are handled by input itself */}
       <div
         className={cl("aksel-combobox__wrapper-inner aksel-text-field__input", {
           "aksel-combobox__wrapper-inner--virtually-unfocused":

@navikt/core/react/src/form/combobox/SelectedOptions/selectedOptionsContext.tsx

@@ -37,12 +37,7 @@ const SelectedOptionsProvider = ({
     "allowNewValues" | "isMultiSelect" | "onToggleSelected" | "maxSelected"
   > & { options: ComboboxOption[]; selectedOptions?: ComboboxOption[] };
 }) => {
-  const {
-    clearInput,
-    focusInput,
-    setHideCaret,
-    inputProps: { disabled },
-  } = useInputContext();
+  const { clearInput, focusInput, setHideCaret } = useInputContext();
   const {
     customOptions,
     removeCustomOption,
@@ -117,6 +112,7 @@ const SelectedOptionsProvider = ({
   const newHideCaret =
     isLimitReached || (!isMultiSelect && selectedOptions.length > 0);
 
+  // biome-ignore lint/correctness/useExhaustiveDependencies: We explicitly want to run this effect when selectedOptions changes to match the view with the selected options.
   useEffect(() => {
     setHideCaret(newHideCaret);
   }, [newHideCaret, selectedOptions, setHideCaret]);
@@ -126,9 +122,6 @@ const SelectedOptionsProvider = ({
       option: ComboboxOption,
       event: React.KeyboardEvent | React.PointerEvent,
     ) => {
-      if (disabled) {
-        return;
-      }
       if (isInList(option.value, selectedOptions)) {
         removeSelectedOption(option);
       } else if (isMultiSelect && isLimitReached) {
@@ -142,7 +135,6 @@ const SelectedOptionsProvider = ({
     [
       addSelectedOption,
       clearInput,
-      disabled,
       focusInput,
       removeSelectedOption,
       selectedOptions,

@navikt/core/react/src/form/combobox/__tests__/combobox.test.tsx

@@ -56,26 +56,6 @@ describe("Render combobox", () => {
     });
   });
 
-  test("ignores option selection after the open Combobox becomes disabled", async () => {
-    const onToggleSelected = vi.fn();
-    const props = { options, selectedOptions: ["apple"], onToggleSelected };
-    const { rerender } = render(<App {...props} />);
-    const input = screen.getByRole("combobox");
-    await userEvent.click(input);
-    rerender(<App {...props} disabled />);
-    expect(input).toBeDisabled();
-    await userEvent.click(
-      await screen.findByRole("option", { name: "banana" }),
-    );
-    expect(onToggleSelected).not.toHaveBeenCalled();
-
-    rerender(<App {...props} />);
-    await userEvent.click(
-      await screen.findByRole("option", { name: "banana" }),
-    );
-    expect(onToggleSelected).toHaveBeenCalledWith("banana", true, false);
-  });
-
   describe("Combobox state-handling", () => {
     test("Should show loading icon when loading (used for async search)", async () => {
       render(<App options={[]} isListOpen isLoading />);

@navikt/core/react/src/form/combobox2/Combobox.tsx

@@ -216,7 +216,7 @@ const ComboboxSingle = forwardRef(
   props: ComboboxSingleProps<T> & React.RefAttributes<HTMLButtonElement>,
 ) => React.ReactElement;
 
-// oxlint-disable-next-line typescript/no-namespace
+// eslint-disable-next-line @typescript-eslint/no-namespace
 export namespace ComboboxSingle {
   export type Props<
     T extends ComboboxOptionData | ComboboxGroupData<ComboboxOptionData>,
@@ -283,7 +283,7 @@ function ComboboxMulti<
   );
 }
 
-// oxlint-disable-next-line typescript/no-namespace
+// eslint-disable-next-line @typescript-eslint/no-namespace
 export namespace ComboboxMulti {
   export type Props<
     T extends ComboboxOptionData | ComboboxGroupData<ComboboxOptionData>,

@navikt/core/react/src/form/combobox2/field/ComboboxField.tsx

@@ -28,7 +28,6 @@ const ComboboxField = forwardRef<HTMLButtonElement, ComboboxFieldProps>(
     const [ariaLabel, setAriaLabel] = useState<string>();
     useEffect(() => {
       if (label) {
-        // oxlint-disable-next-line react/set-state-in-effect -- Briefly sets and resets the label as part of the VoiceOver workaround.
         setAriaLabel(label);
         setTimeout(() => setAriaLabel(undefined), 100);
       }

@navikt/core/react/src/form/combobox2/list/useAnnounce.ts

@@ -86,7 +86,7 @@ function announce(message: string, politeness: Politeness = "polite") {
   }
   // If the message is the same as the current text,
   // append a non-breaking space to force a re-announcement.
-  target.textContent = message === target.textContent ? `${message} ` : message;
+  target.textContent = message === target.textContent ? `${message} ` : message; // eslint-disable-line no-irregular-whitespace
   scheduleClear(politeness, target);
 }
 

@navikt/core/react/src/form/combobox2/option/highlightSubstring.tsx

@@ -9,6 +9,7 @@ function highlightSubstring(text: string, substring: string) {
   const [rangeStart, rangeEnd] = range;
   return (
     // Aria-label is used to fix testing-library wrongly evaluating the accessible name of the option when highlighting text
+    // biome-ignore lint/a11y/useAriaPropsSupportedByRole: Doesn't matter if it doesn't work in normal browsers
     <span aria-label={text}>
       {text.substring(0, rangeStart)}
       <mark>{text.substring(rangeStart, rangeEnd)}</mark>

@navikt/core/react/src/form/combobox2/popup/ComboboxPopup.tsx

@@ -1,5 +1,4 @@
-import React, { useRef, useState } from "react";
-import { useClientLayoutEffect } from "../../../utils-external";
+import React, { useLayoutEffect, useRef, useState } from "react";
 import { Listbox } from "../../../utils/components/Listbox/root/ListboxRoot";
 import { createStrictContext } from "../../../utils/helpers";
 import { useComboboxRootContext } from "../root/ComboboxRoot";
@@ -30,7 +29,7 @@ export const ComboboxPopup = ({ children }: ComboboxPopupProps) => {
   const rootContext = useComboboxRootContext();
   const ref = useRef<HTMLDivElement | null>(null);
 
-  useClientLayoutEffect(
+  useLayoutEffect(
     function onOpen() {
       const canHover = window.matchMedia("(hover: hover)").matches;
 

@navikt/core/react/src/form/combobox2/trigger/ComboboxTrigger.tsx

@@ -28,7 +28,6 @@ const ComboboxTrigger = ({
   return (
     <Floating.Anchor asChild ref={rootContext.triggerRef}>
       <Slot
-        // oxlint-disable-next-line jsx-a11y/role-has-required-aria-props -- aria-controls is not really needed
         role="combobox"
         aria-expanded={readOnly ? undefined : rootContext.open}
         onClick={() => !readOnly && rootContext.setOpen(!rootContext.open)}

@navikt/core/react/src/form/error-summary/ErrorSummary.tsx

@@ -85,6 +85,7 @@ export const ErrorSummary = forwardRef<HTMLDivElement, ErrorSummaryProps>(
     const mergedRef = useMergeRefs(ref, wrapperRef);
 
     return (
+      // biome-ignore lint/a11y/noStaticElementInteractions: Allows focus-calls on div to move focus to heading.
       <div
         ref={mergedRef}
         {...rest}

@navikt/core/react/src/form/file-upload/dropzone/FileUploadDropzone.tsx

@@ -90,7 +90,8 @@ const FileUploadDropzone = forwardRef<
           {description}
         </BodyShort>
       )}
-      {/* oxlint-disable-next-line jsx-a11y/click-events-have-key-events, jsx-a11y/no-static-element-interactions -- Keyboard will access input/button within */}
+      {/** biome-ignore lint/a11y/noStaticElementInteractions: Assistive technologies will use the input within.  */}
+      {/** biome-ignore lint/a11y/useKeyWithClickEvents: Keyboard will access input/button within */}
       <div
         className="aksel-dropzone__area"
         onDragEnter={dropzoneCtx.onDragEnter}

@navikt/core/react/src/form/file-upload/helpers/is-accepted-size.test.ts

@@ -1,23 +1,26 @@
 import { isAcceptedSize } from "./is-accepted-size";
 
-const createFile = () =>
-  new File(["a".repeat(4999)], "filename.txt", { type: "text/plain" });
-
 describe("isAcceptedSize", () => {
   it("should return true if maxSize is less than or equal to 0", () => {
-    const file = createFile();
+    const file = new File([new Array(5000).join("a")], "filename.txt", {
+      type: "text/plain",
+    });
     expect(isAcceptedSize(file, -1)).toBe(true);
     expect(isAcceptedSize(file, 0)).toBe(true);
   });
 
   it("should return true if file size is less than or equal to maxSize", () => {
-    const file = createFile();
+    const file = new File([new Array(5000).join("a")], "filename.txt", {
+      type: "text/plain",
+    });
     expect(isAcceptedSize(file, 5000)).toBe(true);
     expect(isAcceptedSize(file, 6000)).toBe(true);
   });
 
   it("should return false if file size is greater than maxSize", () => {
-    const file = createFile();
+    const file = new File([new Array(5000).join("a")], "filename.txt", {
+      type: "text/plain",
+    });
     expect(isAcceptedSize(file, 4000)).toBe(false);
   });
 });

@navikt/core/react/src/form/radio-card/RadioCard.tsx

@@ -32,7 +32,7 @@ const RadioCard = forwardRef<HTMLInputElement, RadioCardProps>(
   },
 );
 
-// oxlint-disable-next-line typescript/no-namespace
+// eslint-disable-next-line @typescript-eslint/no-namespace
 export namespace RadioCard {
   export type Props = RadioCardProps;
 }

@navikt/core/react/src/form/radio-card/RadioCardGroup.tsx

@@ -25,7 +25,7 @@ const RadioCardGroup = forwardRef<HTMLFieldSetElement, RadioCardGroupProps>(
   ),
 );
 
-// oxlint-disable-next-line typescript/no-namespace
+// eslint-disable-next-line @typescript-eslint/no-namespace
 export namespace RadioCardGroup {
   export type Props = RadioCardGroupProps;
 }