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feat(lint/html/vue): add useVueValidVFor#10195

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feat(lint/html/vue): add useVueValidVFor#10195
dyc3 merged 10 commits into
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dyc3/useVueValidVFor

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@dyc3 dyc3 commented May 1, 2026

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Summary

This adds useVueValidVFor, which is a port of https://eslint.vuejs.org/rules/valid-v-for (finally!)

generated by gpt 5.4 mostly. I made some tweaks manually.

You'll likely notice contains_identifier. Obviously, there is a "more correct" way to do this: probably enhance then embedded bindings services. But I intentionally chose not to do that because it would be better serviced by a Vue-specific semantic model, which is something we want to pursue eventually, and because this rule is pretty valuable as is.

Test Plan

snapshots

Docs

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changeset-bot Bot commented May 1, 2026

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🦋 Changeset detected

Latest commit: 34fe173

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

This PR includes changesets to release 13 packages
Name Type
@biomejs/biome Patch
@biomejs/cli-win32-x64 Patch
@biomejs/cli-win32-arm64 Patch
@biomejs/cli-darwin-x64 Patch
@biomejs/cli-darwin-arm64 Patch
@biomejs/cli-linux-x64 Patch
@biomejs/cli-linux-arm64 Patch
@biomejs/cli-linux-x64-musl Patch
@biomejs/cli-linux-arm64-musl Patch
@biomejs/wasm-web Patch
@biomejs/wasm-bundler Patch
@biomejs/wasm-nodejs Patch
@biomejs/backend-jsonrpc Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

@github-actions github-actions Bot added A-CLI Area: CLI A-Project Area: project A-Linter Area: linter L-HTML Language: HTML and super languages labels May 1, 2026
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No actionable comments were generated in the recent review. 🎉

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  • crates/biome_html_analyze/src/lint/nursery/use_vue_valid_v_for.rs
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  • crates/biome_html_analyze/src/lint/nursery/use_vue_valid_v_for.rs

Walkthrough

Adds a new nursery lint rule useVueValidVFor that validates Vue v-for directives: rejects arguments/modifiers, reports missing or unparseable values, enforces identifier-only secondary/tertiary tuple aliases, and requires v-bind:key on custom components (and on children of <template v-for>) where the key must reference an iteration identifier when the key is a string literal. Adds rule options, tests (valid/invalid fixtures), a dependency entry for biome_unicode_table, and a small HTML element API change: case-sensitive v-bind checking and a new find_vue_binding helper.

Possibly related PRs

Suggested reviewers

  • ematipico
🚥 Pre-merge checks | ✅ 4
✅ Passed checks (4 passed)
Check name Status Explanation
Title check ✅ Passed The PR title precisely describes the main change: adding the useVueValidVFor lint rule for HTML/Vue.
Description check ✅ Passed The description clearly explains the motivation (porting an ESLint rule), implementation approach, and testing strategy, all directly related to the changeset.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
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Actionable comments posted: 2

🧹 Nitpick comments (1)
.changeset/blue-parents-bow.md (1)

5-5: ⚡ Quick win

Please add one line about default severity.

A short note that this nursery rule defaults to information-level diagnostics (when severity isn’t explicitly set) would prevent user confusion during upgrades.

Based on learnings: In changeset markdown files, document that when a lint rule does not explicitly set the severity in declare_lint_rule!, the default severity is Severity::Information (RuleMetadata::default()).

🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In @.changeset/blue-parents-bow.md at line 5, Add one sentence to the changeset
note stating the default severity for nursery rules when not explicitly set:
clarify that rules declared with declare_lint_rule! will use
RuleMetadata::default(), which sets the default severity to
Severity::Information; mention this alongside the new useVueValidVFor entry so
users know information-level diagnostics will appear unless severity is
overridden.
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@crates/biome_html_analyze/src/lint/nursery/use_vue_valid_v_for.rs`:
- Around line 429-435: The helper find_v_for_directive is returning early
because attr.as_any_vue_directive()?.as_vue_directive()? uses the ? operator and
yields None for regular attributes; change this to explicitly skip non-Vue
attributes (e.g., use if let / match or and_then to get an Option and continue
when None) so you only process attributes that are Vue directives; keep the rest
of the logic using directive, element.attributes(), and the existing v-for
name_token() check intact so later v-for directives in the iterator are still
found.
- Around line 121-123: The current branch returns None when
v_for_value.operator().is_err() or v_for_value.expression().is_err(), causing
partial v-for like `v-for="item"` or `v-for="item in"` to be ignored; change
this to emit a diagnostic instead of returning None: detect which part is
missing via v_for_value.operator() and v_for_value.expression(), build and push
an appropriate diagnostic message (e.g. "v-for is missing iterator/operator" or
"v-for is missing expression") referencing the v-for attribute, and continue (do
not early-return). Update the handling around v_for_value so partial parses
produce a clear lint rather than silently returning None.

---

Nitpick comments:
In @.changeset/blue-parents-bow.md:
- Line 5: Add one sentence to the changeset note stating the default severity
for nursery rules when not explicitly set: clarify that rules declared with
declare_lint_rule! will use RuleMetadata::default(), which sets the default
severity to Severity::Information; mention this alongside the new
useVueValidVFor entry so users know information-level diagnostics will appear
unless severity is overridden.
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Fix all unresolved CodeRabbit comments on this PR:

  • Push a commit to this branch (recommended)
  • Create a new PR with the fixes

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  • Cargo.lock is excluded by !**/*.lock and included by **
  • crates/biome_cli/src/execute/migrate/eslint_any_rule_to_biome.rs is excluded by !**/migrate/eslint_any_rule_to_biome.rs and included by **
  • crates/biome_configuration/src/analyzer/linter/rules.rs is excluded by !**/rules.rs and included by **
  • crates/biome_configuration/src/generated/linter_options_check.rs is excluded by !**/generated/**, !**/generated/** and included by **
  • crates/biome_html_analyze/tests/specs/nursery/useVueValidVFor/invalid.vue.snap is excluded by !**/*.snap and included by **
  • crates/biome_html_analyze/tests/specs/nursery/useVueValidVFor/valid.vue.snap is excluded by !**/*.snap and included by **
  • packages/@biomejs/backend-jsonrpc/src/workspace.ts is excluded by !**/backend-jsonrpc/src/workspace.ts and included by **
  • packages/@biomejs/biome/configuration_schema.json is excluded by !**/configuration_schema.json and included by **
📒 Files selected for processing (7)
  • .changeset/blue-parents-bow.md
  • crates/biome_html_analyze/Cargo.toml
  • crates/biome_html_analyze/src/lint/nursery/use_vue_valid_v_for.rs
  • crates/biome_html_analyze/tests/specs/nursery/useVueValidVFor/invalid.vue
  • crates/biome_html_analyze/tests/specs/nursery/useVueValidVFor/valid.vue
  • crates/biome_rule_options/src/lib.rs
  • crates/biome_rule_options/src/use_vue_valid_v_for.rs

Comment thread crates/biome_html_analyze/src/lint/nursery/use_vue_valid_v_for.rs
Comment thread crates/biome_html_analyze/src/lint/nursery/use_vue_valid_v_for.rs
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Merging this PR will not alter performance

✅ 249 untouched benchmarks


Comparing dyc3/useVueValidVFor (34fe173) with main (46393e0)

Open in CodSpeed

@dyc3 dyc3 marked this pull request as draft May 2, 2026 13:36
@dyc3 dyc3 force-pushed the dyc3/useVueValidVFor branch from 1026fa7 to d49d75d Compare May 2, 2026 14:42
@github-actions github-actions Bot added the A-Parser Area: parser label May 2, 2026
@dyc3 dyc3 force-pushed the dyc3/useVueValidVFor branch from 34fedac to aba8cb2 Compare May 2, 2026 17:23
@dyc3 dyc3 marked this pull request as ready for review May 2, 2026 21:09

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Actionable comments posted: 1

♻️ Duplicate comments (1)
crates/biome_html_analyze/src/lint/nursery/use_vue_valid_v_for.rs (1)

119-121: ⚠️ Potential issue | 🟠 Major | ⚡ Quick win

Don’t silently skip malformed v-for expressions.

At Line 119, partial parses (e.g. v-for="item" / v-for="item in") currently return None, so the rule emits nothing. That creates a quiet false-negative path.

Suggested patch
-        if v_for_value.operator().is_err() || v_for_value.expression().is_err() {
-            return None;
-        }
+        if v_for_value.operator().is_err() || v_for_value.expression().is_err() {
+            return Some(ViolationKind::MissingValue);
+        }
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@crates/biome_html_analyze/src/lint/nursery/use_vue_valid_v_for.rs` around
lines 119 - 121, The code currently quietly returns None when
v_for_value.operator() or v_for_value.expression() is Err, creating false
negatives; instead of returning None in use_vue_valid_v_for.rs, detect those Err
cases on v_for_value.operator() and v_for_value.expression(), construct and emit
a lint/diagnostic indicating a malformed v-for (include a clear message and the
span from the v_for_value node or its raw range), and then return early; replace
the silent return None with that emitted diagnostic so partial parses like
`v-for="item"` or `v-for="item in"` are reported.
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@crates/biome_html_analyze/src/lint/nursery/use_vue_valid_v_for.rs`:
- Around line 311-323: The loop over container.children() currently uses the `?`
operator when converting children and when calling
`child_uses_parent_binding_in_v_for(&child, iteration_value)`, which causes the
whole `<template v-for>` scan to abort on a single malformed child; replace both
`?` usages with explicit error handling (e.g., match/if let or Result handling)
that skips the problematic child and continues the loop instead of returning
early. Specifically, in the block that maps AnyHtmlElement to AnyHtmlTagElement
and in the call to `child_uses_parent_binding_in_v_for`, change the
falling-through `?` to code that logs or ignores the error and executes
`continue` so later children still get checked. Ensure you update the logic
around the `child` variable (the match producing AnyHtmlTagElement) and the
`child_uses_parent_binding_in_v_for(&child, iteration_value)` call to
return/propagate only real fatal errors, not single-child parse failures.

---

Duplicate comments:
In `@crates/biome_html_analyze/src/lint/nursery/use_vue_valid_v_for.rs`:
- Around line 119-121: The code currently quietly returns None when
v_for_value.operator() or v_for_value.expression() is Err, creating false
negatives; instead of returning None in use_vue_valid_v_for.rs, detect those Err
cases on v_for_value.operator() and v_for_value.expression(), construct and emit
a lint/diagnostic indicating a malformed v-for (include a clear message and the
span from the v_for_value node or its raw range), and then return early; replace
the silent return None with that emitted diagnostic so partial parses like
`v-for="item"` or `v-for="item in"` are reported.
🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

  • Push a commit to this branch (recommended)
  • Create a new PR with the fixes

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Review profile: CHILL

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Reviewing files that changed from the base of the PR and between a60ff64 and 7a83b42.

⛔ Files ignored due to path filters (4)
  • crates/biome_cli/src/execute/migrate/eslint_any_rule_to_biome.rs is excluded by !**/migrate/eslint_any_rule_to_biome.rs and included by **
  • crates/biome_html_analyze/tests/specs/nursery/useVueValidVFor/valid.vue.snap is excluded by !**/*.snap and included by **
  • packages/@biomejs/backend-jsonrpc/src/workspace.ts is excluded by !**/backend-jsonrpc/src/workspace.ts and included by **
  • packages/@biomejs/biome/configuration_schema.json is excluded by !**/configuration_schema.json and included by **
📒 Files selected for processing (4)
  • crates/biome_html_analyze/src/lint/nursery/use_vue_v_for_key.rs
  • crates/biome_html_analyze/src/lint/nursery/use_vue_valid_v_for.rs
  • crates/biome_html_analyze/tests/specs/nursery/useVueValidVFor/valid.vue
  • crates/biome_html_syntax/src/element_ext.rs
✅ Files skipped from review due to trivial changes (1)
  • crates/biome_html_analyze/src/lint/nursery/use_vue_v_for_key.rs
🚧 Files skipped from review as they are similar to previous changes (1)
  • crates/biome_html_analyze/tests/specs/nursery/useVueValidVFor/valid.vue

Comment thread crates/biome_html_analyze/src/lint/nursery/use_vue_valid_v_for.rs
@dyc3 dyc3 force-pushed the dyc3/useVueValidVFor branch from 7a83b42 to a1d7907 Compare May 3, 2026 17:46
@dyc3 dyc3 merged commit 7b8d4e1 into main May 8, 2026
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@dyc3 dyc3 deleted the dyc3/useVueValidVFor branch May 8, 2026 14:07
@github-actions github-actions Bot mentioned this pull request May 8, 2026
OIRNOIR pushed a commit to OIRNOIR/YouTube-Helper-Server that referenced this pull request May 12, 2026
This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [@biomejs/biome](https://biomejs.dev) ([source](https://github.com/biomejs/biome/tree/HEAD/packages/@biomejs/biome)) | imports | patch | [`2.4.14` -> `2.4.15`](https://renovatebot.com/diffs/npm/@biomejs%2fbiome/2.4.14/2.4.15) |

---

### Release Notes

<details>
<summary>biomejs/biome (@&#8203;biomejs/biome)</summary>

### [`v2.4.15`](https://github.com/biomejs/biome/blob/HEAD/packages/@&#8203;biomejs/biome/CHANGELOG.md#2415)

[Compare Source](https://github.com/biomejs/biome/compare/@biomejs/biome@2.4.14...@biomejs/biome@2.4.15)

##### Patch Changes

- [#&#8203;9394](biomejs/biome#9394) [`ba3480e`](biomejs/biome@ba3480e) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added the nursery rule [`useTestHooksInOrder`](https://biomejs.dev/linter/rules/use-test-hooks-in-order) in the `test` domain. The rule enforces that Jest/Vitest lifecycle hooks (`beforeAll`, `beforeEach`, `afterEach`, `afterAll`) are declared in the order they execute, making test setup and teardown easier to reason about.

- [#&#8203;10254](biomejs/biome#10254) [`e0a54cc`](biomejs/biome@e0a54cc) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added a new nursery rule [`useVueNextTickPromise`](https://biomejs.dev/linter/rules/use-vue-next-tick-promise/), which enforces Promise syntax when using Vue `nextTick`.

  For example, the following snippet triggers the rule:

  ```js
  import { nextTick } from "vue";

  nextTick(() => {
    updateDom();
  });
  ```

- [#&#8203;10219](biomejs/biome#10219) [`64aee45`](biomejs/biome@64aee45) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added a new nursery rule [`noVueVOnNumberValues`](https://biomejs.dev/linter/rules/no-vue-v-on-number-values/), that disallows deprecated number modifiers on Vue `v-on` directives.

  For example, the following snippet triggers the rule:

  ```vue
  <input @&#8203;keyup.13="submit" />
  ```

- [#&#8203;10195](biomejs/biome#10195) [`7b8d4e1`](biomejs/biome@7b8d4e1) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added the new nursery rule [`useVueValidVFor`](https://biomejs.dev/linter/rules/use-vue-valid-v-for/), which validates Vue `v-for` directives and reports invalid aliases, missing component keys, and keys that do not use iteration variables.

- [#&#8203;10238](biomejs/biome#10238) [`1110256`](biomejs/biome@1110256) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added the recommended nursery rule [`noVueImportCompilerMacros`](https://biomejs.dev/linter/rules/no-vue-import-compiler-macros/), which disallows importing Vue compiler macros such as `defineProps` from `vue` because they are automatically available.

- [#&#8203;10201](biomejs/biome#10201) [`1a08f89`](biomejs/biome@1a08f89) Thanks [@&#8203;realknove](https://github.com/realknove)! - Fixed [#&#8203;10193](biomejs/biome#10193): `style/useReadonlyClassProperties` no longer reports class properties as readonly-able when they are assigned inside arrow callbacks nested in class property initializers.

- [#&#8203;9574](biomejs/biome#9574) [`3bd2b6a`](biomejs/biome@3bd2b6a) Thanks [@&#8203;Conaclos](https://github.com/Conaclos)! - Fixed [#&#8203;9530](biomejs/biome#9530). The diagnostics of [`organizeImports`](https://biomejs.dev/assist/actions/organize-imports/) are now more detailed and more precise. They are also better at localizing where the issue is.

- [#&#8203;10205](biomejs/biome#10205) [`a704a6c`](biomejs/biome@a704a6c) Thanks [@&#8203;Conaclos](https://github.com/Conaclos)! - Fixed [#&#8203;10185](biomejs/biome#10185). [\`organizeImports](https://biomejs.dev/assist/actions/organize-imports/) now errors when it encounters an unknown predefined group.

  The following configuration is now reported as invalid because `:INEXISTENT:` is an unknown predefined group.

  ```json
  {
    "assist": {
      "actions": {
        "source": {
          "organizeImports": { "options": { "groups": [":INEXISTENT:"] } }
        }
      }
    }
  }
  ```

- [#&#8203;10052](biomejs/biome#10052) [`b565bed`](biomejs/biome@b565bed) Thanks [@&#8203;minseong0324](https://github.com/minseong0324)! - Improved [`noMisleadingReturnType`](https://biomejs.dev/linter/rules/no-misleading-return-type/): it now flags union annotations whose extra variants are never returned, and suggests the narrower type (e.g. `string | null` → `string`).

  These functions are now reported because `null` and `number` are included in the return annotations but never returned:

  ```ts
  function getUser(): string | null {
    return "hello";
  } // null is never returned
  function getCode(): string | number {
    return "hello";
  } // number is never returned
  ```

- [#&#8203;10213](biomejs/biome#10213) [`ac30057`](biomejs/biome@ac30057) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Fixed [#&#8203;9450](biomejs/biome#9450): HTML and Vue element formatting now preserves child line breaks when an element contains another element child on its own line, instead of collapsing the child element onto the same line.

- [#&#8203;10275](biomejs/biome#10275) [`9ee6c03`](biomejs/biome@9ee6c03) Thanks [@&#8203;solithcy](https://github.com/solithcy)! - Fixed [#&#8203;10274](biomejs/biome#10274): Svelte templates with missing expressions no longer parsed as `HtmlBogusElement`

- [#&#8203;10143](biomejs/biome#10143) [`56798a7`](biomejs/biome@56798a7) Thanks [@&#8203;minseong0324](https://github.com/minseong0324)! - [`noMisleadingReturnType`](https://biomejs.dev/linter/rules/no-misleading-return-type/) now detects misleading return type annotations when object literal properties are initialized with `as const`.

  This function is now reported because the return annotation widens a property initialized with `as const`:

  ```ts
  function f(): { value: string } {
    return { value: "text" as const };
  }
  ```

- [#&#8203;10143](biomejs/biome#10143) [`56798a7`](biomejs/biome@56798a7) Thanks [@&#8203;minseong0324](https://github.com/minseong0324)! - [`noUselessTypeConversion`](https://biomejs.dev/linter/rules/no-useless-type-conversion/) now detects redundant conversions on object literal properties initialized with `as const`.

  This conversion is now reported because `message.value` is inferred as a string literal:

  ```ts
  const message = { value: "text" as const };
  String(message.value);
  ```

- [#&#8203;9807](biomejs/biome#9807) [`0ae5840`](biomejs/biome@0ae5840) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added the new nursery rule [`useThisInClassMethods`](https://biomejs.dev/linter/rules/use-this-in-class-methods/), based on ESLint's `class-methods-use-this`.

  The rule now reports instance methods, getters, setters, and function-valued instance fields that do not use `this`, and `biome migrate eslint` preserves the supported `ignoreMethods`, `ignoreOverrideMethods`, and `ignoreClassesWithImplements` options.

  **Invalid**:

  ```js
  class Foo {
    bar() {
      // does not use `this`, invalid
      console.log("Hello Biome");
    }
  }
  ```

- [#&#8203;10258](biomejs/biome#10258) [`e7b18f7`](biomejs/biome@e7b18f7) Thanks [@&#8203;ematipico](https://github.com/ematipico)! - Improved linter performance by narrowing the query nodes for several lint rules, reducing how often they are evaluated.

- [#&#8203;10273](biomejs/biome#10273) [`04e22a1`](biomejs/biome@04e22a1) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Fixed [#&#8203;10271](biomejs/biome#10271): The HTML parser now correctly parses `of` as text content when in text contexts.

- [#&#8203;9838](biomejs/biome#9838) [`83f7385`](biomejs/biome@83f7385) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added the nursery rule [`noBaseToString`](https://biomejs.dev/linter/rules/no-base-to-string/), which reports stringification sites that fall back to Object's default `"[object Object]"` formatting. The rule also supports the `ignoredTypeNames` option.

- [#&#8203;10143](biomejs/biome#10143) [`56798a7`](biomejs/biome@56798a7) Thanks [@&#8203;minseong0324](https://github.com/minseong0324)! - [`useExhaustiveSwitchCases`](https://biomejs.dev/linter/rules/use-exhaustive-switch-cases/) now checks switch statements over object literal properties initialized with `as const`.

  This switch is now reported because `status.kind` is inferred as the string literal `"ready"` but no case handles it:

  ```ts
  const status = { kind: "ready" as const };
  switch (status.kind) {
  }
  ```

- [#&#8203;10143](biomejs/biome#10143) [`56798a7`](biomejs/biome@56798a7) Thanks [@&#8203;minseong0324](https://github.com/minseong0324)! - [`useStringStartsEndsWith`](https://biomejs.dev/linter/rules/use-string-starts-ends-with/) now detects string index comparisons on object literal properties initialized with `as const`.

  This comparison is now reported because `message.value` is inferred as a string literal:

  ```ts
  const message = { value: "hello" as const };
  message.value[0] === "h";
  ```

</details>

---

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<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4xNzMuMyIsInVwZGF0ZWRJblZlciI6IjQzLjE3My4zIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6W119-->

Reviewed-on: https://git.oirnoir.dev/OIRNOIR/YouTube-Helper-Server/pulls/12
OIRNOIR pushed a commit to OIRNOIR/YouTube-Helper-Client that referenced this pull request May 13, 2026
This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [@biomejs/biome](https://biomejs.dev) ([source](https://github.com/biomejs/biome/tree/HEAD/packages/@biomejs/biome)) | imports | patch | [`2.4.14` -> `2.4.15`](https://renovatebot.com/diffs/npm/@biomejs%2fbiome/2.4.14/2.4.15) |

---

### Release Notes

<details>
<summary>biomejs/biome (@&#8203;biomejs/biome)</summary>

### [`v2.4.15`](https://github.com/biomejs/biome/blob/HEAD/packages/@&#8203;biomejs/biome/CHANGELOG.md#2415)

[Compare Source](https://github.com/biomejs/biome/compare/@biomejs/biome@2.4.14...@biomejs/biome@2.4.15)

##### Patch Changes

- [#&#8203;9394](biomejs/biome#9394) [`ba3480e`](biomejs/biome@ba3480e) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added the nursery rule [`useTestHooksInOrder`](https://biomejs.dev/linter/rules/use-test-hooks-in-order) in the `test` domain. The rule enforces that Jest/Vitest lifecycle hooks (`beforeAll`, `beforeEach`, `afterEach`, `afterAll`) are declared in the order they execute, making test setup and teardown easier to reason about.

- [#&#8203;10254](biomejs/biome#10254) [`e0a54cc`](biomejs/biome@e0a54cc) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added a new nursery rule [`useVueNextTickPromise`](https://biomejs.dev/linter/rules/use-vue-next-tick-promise/), which enforces Promise syntax when using Vue `nextTick`.

  For example, the following snippet triggers the rule:

  ```js
  import { nextTick } from "vue";

  nextTick(() => {
    updateDom();
  });
  ```

- [#&#8203;10219](biomejs/biome#10219) [`64aee45`](biomejs/biome@64aee45) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added a new nursery rule [`noVueVOnNumberValues`](https://biomejs.dev/linter/rules/no-vue-v-on-number-values/), that disallows deprecated number modifiers on Vue `v-on` directives.

  For example, the following snippet triggers the rule:

  ```vue
  <input @&#8203;keyup.13="submit" />
  ```

- [#&#8203;10195](biomejs/biome#10195) [`7b8d4e1`](biomejs/biome@7b8d4e1) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added the new nursery rule [`useVueValidVFor`](https://biomejs.dev/linter/rules/use-vue-valid-v-for/), which validates Vue `v-for` directives and reports invalid aliases, missing component keys, and keys that do not use iteration variables.

- [#&#8203;10238](biomejs/biome#10238) [`1110256`](biomejs/biome@1110256) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added the recommended nursery rule [`noVueImportCompilerMacros`](https://biomejs.dev/linter/rules/no-vue-import-compiler-macros/), which disallows importing Vue compiler macros such as `defineProps` from `vue` because they are automatically available.

- [#&#8203;10201](biomejs/biome#10201) [`1a08f89`](biomejs/biome@1a08f89) Thanks [@&#8203;realknove](https://github.com/realknove)! - Fixed [#&#8203;10193](biomejs/biome#10193): `style/useReadonlyClassProperties` no longer reports class properties as readonly-able when they are assigned inside arrow callbacks nested in class property initializers.

- [#&#8203;9574](biomejs/biome#9574) [`3bd2b6a`](biomejs/biome@3bd2b6a) Thanks [@&#8203;Conaclos](https://github.com/Conaclos)! - Fixed [#&#8203;9530](biomejs/biome#9530). The diagnostics of [`organizeImports`](https://biomejs.dev/assist/actions/organize-imports/) are now more detailed and more precise. They are also better at localizing where the issue is.

- [#&#8203;10205](biomejs/biome#10205) [`a704a6c`](biomejs/biome@a704a6c) Thanks [@&#8203;Conaclos](https://github.com/Conaclos)! - Fixed [#&#8203;10185](biomejs/biome#10185). [\`organizeImports](https://biomejs.dev/assist/actions/organize-imports/) now errors when it encounters an unknown predefined group.

  The following configuration is now reported as invalid because `:INEXISTENT:` is an unknown predefined group.

  ```json
  {
    "assist": {
      "actions": {
        "source": {
          "organizeImports": { "options": { "groups": [":INEXISTENT:"] } }
        }
      }
    }
  }
  ```

- [#&#8203;10052](biomejs/biome#10052) [`b565bed`](biomejs/biome@b565bed) Thanks [@&#8203;minseong0324](https://github.com/minseong0324)! - Improved [`noMisleadingReturnType`](https://biomejs.dev/linter/rules/no-misleading-return-type/): it now flags union annotations whose extra variants are never returned, and suggests the narrower type (e.g. `string | null` → `string`).

  These functions are now reported because `null` and `number` are included in the return annotations but never returned:

  ```ts
  function getUser(): string | null {
    return "hello";
  } // null is never returned
  function getCode(): string | number {
    return "hello";
  } // number is never returned
  ```

- [#&#8203;10213](biomejs/biome#10213) [`ac30057`](biomejs/biome@ac30057) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Fixed [#&#8203;9450](biomejs/biome#9450): HTML and Vue element formatting now preserves child line breaks when an element contains another element child on its own line, instead of collapsing the child element onto the same line.

- [#&#8203;10275](biomejs/biome#10275) [`9ee6c03`](biomejs/biome@9ee6c03) Thanks [@&#8203;solithcy](https://github.com/solithcy)! - Fixed [#&#8203;10274](biomejs/biome#10274): Svelte templates with missing expressions no longer parsed as `HtmlBogusElement`

- [#&#8203;10143](biomejs/biome#10143) [`56798a7`](biomejs/biome@56798a7) Thanks [@&#8203;minseong0324](https://github.com/minseong0324)! - [`noMisleadingReturnType`](https://biomejs.dev/linter/rules/no-misleading-return-type/) now detects misleading return type annotations when object literal properties are initialized with `as const`.

  This function is now reported because the return annotation widens a property initialized with `as const`:

  ```ts
  function f(): { value: string } {
    return { value: "text" as const };
  }
  ```

- [#&#8203;10143](biomejs/biome#10143) [`56798a7`](biomejs/biome@56798a7) Thanks [@&#8203;minseong0324](https://github.com/minseong0324)! - [`noUselessTypeConversion`](https://biomejs.dev/linter/rules/no-useless-type-conversion/) now detects redundant conversions on object literal properties initialized with `as const`.

  This conversion is now reported because `message.value` is inferred as a string literal:

  ```ts
  const message = { value: "text" as const };
  String(message.value);
  ```

- [#&#8203;9807](biomejs/biome#9807) [`0ae5840`](biomejs/biome@0ae5840) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added the new nursery rule [`useThisInClassMethods`](https://biomejs.dev/linter/rules/use-this-in-class-methods/), based on ESLint's `class-methods-use-this`.

  The rule now reports instance methods, getters, setters, and function-valued instance fields that do not use `this`, and `biome migrate eslint` preserves the supported `ignoreMethods`, `ignoreOverrideMethods`, and `ignoreClassesWithImplements` options.

  **Invalid**:

  ```js
  class Foo {
    bar() {
      // does not use `this`, invalid
      console.log("Hello Biome");
    }
  }
  ```

- [#&#8203;10258](biomejs/biome#10258) [`e7b18f7`](biomejs/biome@e7b18f7) Thanks [@&#8203;ematipico](https://github.com/ematipico)! - Improved linter performance by narrowing the query nodes for several lint rules, reducing how often they are evaluated.

- [#&#8203;10273](biomejs/biome#10273) [`04e22a1`](biomejs/biome@04e22a1) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Fixed [#&#8203;10271](biomejs/biome#10271): The HTML parser now correctly parses `of` as text content when in text contexts.

- [#&#8203;9838](biomejs/biome#9838) [`83f7385`](biomejs/biome@83f7385) Thanks [@&#8203;dyc3](https://github.com/dyc3)! - Added the nursery rule [`noBaseToString`](https://biomejs.dev/linter/rules/no-base-to-string/), which reports stringification sites that fall back to Object's default `"[object Object]"` formatting. The rule also supports the `ignoredTypeNames` option.

- [#&#8203;10143](biomejs/biome#10143) [`56798a7`](biomejs/biome@56798a7) Thanks [@&#8203;minseong0324](https://github.com/minseong0324)! - [`useExhaustiveSwitchCases`](https://biomejs.dev/linter/rules/use-exhaustive-switch-cases/) now checks switch statements over object literal properties initialized with `as const`.

  This switch is now reported because `status.kind` is inferred as the string literal `"ready"` but no case handles it:

  ```ts
  const status = { kind: "ready" as const };
  switch (status.kind) {
  }
  ```

- [#&#8203;10143](biomejs/biome#10143) [`56798a7`](biomejs/biome@56798a7) Thanks [@&#8203;minseong0324](https://github.com/minseong0324)! - [`useStringStartsEndsWith`](https://biomejs.dev/linter/rules/use-string-starts-ends-with/) now detects string index comparisons on object literal properties initialized with `as const`.

  This comparison is now reported because `message.value` is inferred as a string literal:

  ```ts
  const message = { value: "hello" as const };
  message.value[0] === "h";
  ```

</details>

---

### Configuration

📅 **Schedule**: (UTC)

- Branch creation
  - At any time (no schedule defined)
- Automerge
  - At any time (no schedule defined)

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

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This PR has been generated by [Mend Renovate](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4xNzMuMyIsInVwZGF0ZWRJblZlciI6IjQzLjE3My4zIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6W119-->

Reviewed-on: https://git.oirnoir.dev/OIRNOIR/YouTube-Helper-Client/pulls/3
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