chore(deps): update linters

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	OpenSSF
@eslint/js (source)	devDependencies	patch	9.39.4 → 9.39.5
eslint-plugin-prettier	devDependencies	patch	5.5.6 → 5.5.7
prettier (source)	devDependencies	minor	3.8.4 → 3.9.10

---

Release Notes

eslint/eslint (@​eslint/js)

v9.39.5

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Bug Fixes

• 253be16 fix: handle unavailable require cache (backport of #​20812 to v9.x) (#​21065) (Eric)

Documentation

• 74930ed docs: switch build to Node.js 24 (#​20894) (Milos Djermanovic)
• eaec8bb docs: Add ESLint v9.x EOL notice (#​20828) (Milos Djermanovic)

Chores

• 458205f chore: update @eslint/eslintrc and @eslint/js for v9.39.5 (#​21077) (Francesco Trotta)
• 202117b chore: package.json update for @​eslint/js release (Jenkins)
• d9eb6ed test: disable warning for vm.constants.USE_MAIN_CONTEXT_DEFAULT_LOADER (#​21074) (Francesco Trotta)
• 7b431a7 chore: override re2 dependency for @metascraper/helpers (#​21068) (Milos Djermanovic)
• daf7791 chore: pin fflate@​0.8.2 (#​20895) (Milos Djermanovic)
• daee8ba ci: use pnpm in eslint-flat-config-utils type integration test (#​20829) (Milos Djermanovic)
• 116d4be ci: unpin Node.js 25.x in CI (#​20619) (Copilot)

prettier/eslint-plugin-prettier (eslint-plugin-prettier)

v5.5.7

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Patch Changes

• #​796 7e53ecd Thanks @​OskarEichler! - Fix fallback diagnostic locations for all supported line endings.

• #​805 1b7c433 Thanks @​JounQin! - Report a clear error when the sync worker fails to load, so a missing prettier dependency now fails fast with Cannot find package 'prettier' instead of hanging ESLint indefinitely.

prettier/prettier (prettier)

v3.9.10

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diff

Markdown: Update micromark-extension-gfm-table to fix the table parse issue on performance (#​20266 by @​fisker)

See micromark/micromark-extension-gfm-table@4f43ead for details.

v3.9.9

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diff

Markdown: Fix text with $ been incorrectly parsed as math syntax (#​20140 by @​fisker)

<!-- Input -->
**Uses $FOO** from `a.sh` and `b.sh`, plus `$BAR` from `c.sh`, before anything else runs here.

<!-- Prettier 3.9.8 -->
**Uses $FOO** from `a.sh` and `b.sh`, plus `$BAR`from`c.sh`, before anything else runs here.

<!-- Prettier 3.9.9 -->
**Uses $FOO** from `a.sh` and `b.sh`, plus `$BAR` from `c.sh`, before anything else runs here.

v3.9.8

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diff

Markdown: Don't let Liquid objects interrupt paragraphs (#​20087 by @​seiyab)

<!-- Input -->
If `module` is not a [`WebAssembly.Module`](/en-US/docs/WebAssembly/Reference/JavaScript_interface/Module) object instance, a
{{jsxref("TypeError")}} is thrown.

<!-- Prettier 3.9.7 -->
If `module` is not a [`WebAssembly.Module`](/en-US/docs/WebAssembly/Reference/JavaScript_interface/Module) object instance, a

{{jsxref("TypeError")}} is thrown.

<!-- Prettier 3.9.8 -->
If `module` is not a [`WebAssembly.Module`](/en-US/docs/WebAssembly/Reference/JavaScript_interface/Module) object instance, a
{{jsxref("TypeError")}} is thrown.

v3.9.7

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diff

Markdown: Prevent indentation drift in list-item code blocks (#​19647, #​19990 by @​Austin1serb, @​giaBaoJS)

<!-- Input -->
- [x] short first line.

      second paragraph at six spaces that wraps
      onto another line here.

<!-- Prettier 3.9.6 -->
- [x] short first line.

      second paragraph at six spaces that wraps
          onto another line here.

<!-- Prettier 3.9.7 -->
- [x] short first line.

      second paragraph at six spaces that wraps
      onto another line here.

JavaScript: Fix embedded template literal idempotency (#​19725 by @​fisker)

// Input
const foo = html`
            <div>${getText({
            value,
            })}</div>
`;

// Prettier 3.9.6 (first format)
const foo = html`
  <div>
    ${getText({
              value,
            })}
  </div>
`;

// Prettier 3.9.6 (second format)
const foo = html`
  <div>
    ${getText({
      value,
    })}
  </div>
`;

// Prettier 3.9.7
const foo = html`
  <div>
    ${getText({
      value,
    })}
  </div>
`;

Markdown: Preserve Liquid blocks after Markdown tables (#​19730 by @​wanxiankai, @​seiyab)

<!-- Input -->
| Argument | Type |
| -------- | ---- |
{% set default_params = {
    "model": ["str"],
} %}

<!-- Prettier 3.9.6 -->
| Argument                  | Type |
| ------------------------- | ---- |
| {% set default_params = { |

    "model": ["str"],

} %}

<!-- Prettier 3.9.7 -->
| Argument | Type |
| -------- | ---- |
{% set default_params = {
    "model": ["str"],
} %}

Markdown: Preserve single tildes in Markdown (#​19739 by @​lazerg)

Since 3.9.0, single-tilde spans like H~2~O were rewritten to double tildes, turning subscript syntax into strike-through. Only double tildes are treated that way now, matching GitHub.

<!-- Input -->
H~2~O

<!-- Prettier 3.9.6 -->
H~~2~~O

<!-- Prettier 3.9.7 -->
H~2~O

Markdown: Fix Markdown blockquote containing > characters (#​19802 by @​seiyab)

<!-- Input -->
> **test**\>

<!-- Prettier 3.9.6 -->
> **test**>\>

<!-- Prettier 3.9.7 -->
> **test**\>

Markdown: Strip blockquote markers from a setext heading's continuation lines (#​19878 by @​Kjubikstronk)

A setext heading spanning multiple lines inside a blockquote kept the > marker of its continuation lines as literal text.

<!-- Input -->
> Multi
> Line
> ===

<!-- Prettier 3.9.6 -->
> Multi > Line
> ===

<!-- Prettier 3.9.7 -->
> Multi
> Line
> ===

Markdown: Fix HTML block indentation drift in markdown list items (#​19987 by @​lazerg)

<!-- Input -->
1. Enable images:

    <p align="center">
      <img alt="example">
    </p>

<!-- Prettier 3.9.6 (--tab-width=4) -->
1. Enable images:

     <p align="center">
       <img alt="example">
     </p>

<!-- Prettier 3.9.7 (--tab-width=4) -->
1. Enable images:

    <p align="center">
      <img alt="example">
    </p>

Angular: Support @boundary error boundaries (#​20014 by @​Yahiro025)

<!-- Input -->
@boundary {
<complex-chart [data]="data"/>
}
@error (let err) {
<p>{{err.message}}</p>
}

<!-- Prettier 3.9.6 -->
SyntaxError: Unexpected character "EOF" (Do you have an unescaped "{" in your template? Use "{{ '{' }}") to escape it.) (6:1)

<!-- Prettier 3.9.7 -->
@boundary {
  <complex-chart [data]="data" />
} @error (let err) {
  <p>{{ err.message }}</p>
}

v3.9.6

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diff

TypeScript: Preserve quotes for methods named new (#​19621 by @​kovsu)

// Input
interface Container {
  "new"(id: string): number;
}

// Prettier 3.9.5
interface Container {
  new(id: string): number;
}

// Prettier 3.9.6
interface Container {
  "new"(id: string): number;
}

TypeScript: Support import defer (#​19624, #​19675 by @​fisker)

// Input
import defer * as foo from "foo";

// Prettier 3.9.5
import * as foo from "foo";

// Prettier 3.9.6
import defer * as foo from "foo";

JavaScript: Added a new official plugin @prettier/plugin-yuku (#​19628, #​19629 by @​fisker)

@prettier/plugin-yuku is powered by Yuku (A high-performance JavaScript/TypeScript compiler toolchain written in Zig).

This plugin includes two new parsers: yuku (JavaScript syntax) and yuku-ts (TypeScript syntax).

To use this plugin:

1. Install the plugin:

   yarn add --dev prettier @prettier/plugin-yuku

2. Add it to your .prettierrc:

   plugins:
     - "@prettier/plugin-yuku"

Due to package size limitations, this plugin is not bundled with the main prettier package and must be installed separately.

For more information, check the package homepage.

Big thanks to @​arshad-yaseen for his excellent work.

v3.9.5

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diff

Markdown: Cap ordered list mark at 999,999,999 (#​19351 by @​tats-u)

CommonMark parsers only support ordered list item numbers up to 999,999,999.

With this change, Prettier now caps the ordered list item number at 999,999,999 to ensure that the output is correctly parsed as an ordered list by CommonMark parsers. Numbers larger than 999,999,999 are not parsed as list item numbers and are left unchanged in the output:

<!-- Input -->
999999998. text
999999998. text
999999998. text
999999998. text

1234567890123456789012) text

<!-- Prettier 3.9.4 -->
999999998. text
999999999. text
1000000000. text
1000000001. text

1234567890123456789012) text

<!-- Prettier 3.9.5 -->
999999998. text
999999999. text
999999999. text
999999999. text

1234567890123456789012) text

Markdown: Avoid corrupting empty link with title (#​19487 by @​andersk)

Do not remove <> from an inline link or image with an empty URL and a title, as this removal would change its interpretation.

<!-- Input -->
[link](<> "title")

<!-- Prettier 3.9.4 -->
[link]( "title")

<!-- Prettier 3.9.5 -->
[link](<> "title")

Less: Remove extra spaces after [ in map lookups (#​19503 by @​kovsu)

// Input
.foo {
  color: #theme[ primary];
  color: #theme[@name];
  color: #theme[@@name];
}

// Prettier 3.9.4
.foo {
  color: #theme[ primary];
  color: #theme[ @name];
  color: #theme[ @@name];
}

// Prettier 3.9.5
.foo {
  color: #theme[primary];
  color: #theme[@name];
  color: #theme[@@name];
}

CSS: Prevent addition space in type() with + (#​19516 by @​bigandy)

This fixes the addition space before + in CSS type() declaration. For example type(<number>+) was being converted into type(<number> +) which is invalid CSS and does not work.

/* Input */
div {
  border-radius: attr(br type(<length>+));
}

/* Prettier 3.9.4 */
div {
  border-radius: attr(br type(<length> +));
}

/* Prettier 3.9.5 */
div {
  border-radius: attr(br type(<length>+));
}

Less: Remove spaces between merge markers and colons (#​19517 by @​kovsu)

// Input
a {
  box-shadow  +  : 0 0 1px #​000;
}

// Prettier 3.9.4
a {
  box-shadow+  : 0 0 1px #​000;
}

// Prettier 3.9.5
a {
  box-shadow+: 0 0 1px #​000;
}

Markdown: Preserve wiki links with aliases (#​19527 by @​kovsu)

<!-- Input -->
[[Foo:Bar]]

<!-- Prettier 3.9.4 -->
[[Foo]]

<!-- Prettier 3.9.5 -->
[[Foo:Bar]]

TypeScript: Fix comments being dropped on shorthand type import/export specifiers (#​19565 by @​kirkwaiblinger)

// Input
export { type /* comment */ T } from "foo";
import { type /* comment */ T } from "foo";

// Prettier 3.9.4
Error: Comment "comment" was not printed. Please report this error!

// Prettier 3.9.5
export { type /* comment */ T } from "foo";
import { type /* comment */ T } from "foo";

Miscellaneous: Preserving comments' placement property (#​19567 by @​Janther)

Prettier@​3.9.0 deleted an undocumented property on comments, which was already used by plugins, comment.placement is now available again after comment attach.

Flow: Stop enforcing empty module declaration to break (#​19568 by @​fisker)

// Input
declare module "foo" {}

// Prettier 3.9.4
declare module "foo" {
}

// Prettier 3.9.5
declare module "foo" {}

Angular: Support expression for exhaustive typechecking (#​19571 by @​fisker)

<!-- Input -->
@switch (state.mode) {
  @default never(state);
}

<!-- Prettier 3.9.4 -->
@switch (state.mode) {
  @default never;
}

<!-- Prettier 3.9.5 -->
@switch (state.mode) {
  @default never(state);
}

TypeScript: Ignore comments inside mapped type when checking type parameter comments (#​19572 by @​fisker)

// Input
foo<{
  // comment
  [key in keyof Foo]: number
}>();

// Prettier 3.9.4
foo<
  {
    // comment
    [key in keyof Foo]: number;
  }
>();

// Prettier 3.9.5
foo<{
  // comment
  [key in keyof Foo]: number;
}>();

Less: Fix adjacent block comments being corrupted (#​19574 by @​kovsu)

// Input
/* a *//* b */
/* a */* {
  color: red;
}

// Prettier 3.9.4
/* a */
/* b */
/* a * {
  color: red;
}

// Prettier 3.9.5
/* a */ /* b */
/* a */
* {
  color: red;
}

JavaScript: Handle dangling comments in SwitchStatement (#​19581 by @​fisker)

// Input
switch (foo) {
 // comment
}

// Prettier 3.9.4
switch (
  foo
  // comment
) {
}

// Prettier 3.9.5
switch (foo) {
  // comment
}

TypeScript: Remove space in comment-only object type (#​19583 by @​fisker)

// Input
var foo = {
  /* comment */
};
type Foo = {
  /* comment */
};

// Prettier 3.9.4
var foo = {/* comment */};
type Foo = { /* comment */ };

// Prettier 3.9.5
var foo = {/* comment */};
type Foo = {/* comment */};

v3.9.4

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diff

Angular: Format @content(name) -> @content (name) to align with other block syntax (#​19499 by @​fisker)

<!-- Input -->
<FancyButton [label]="title">
  @content (icon) {
    <span>Icon!</span>
  }
  @content (description) {
    <span>Description text</span>
  }
  <span>Other children</span>
</FancyButton>

<!-- Prettier 3.9.3 -->
<FancyButton [label]="title">
  @content(icon) {
    <span>Icon!</span>
  }
  @content(description) {
    <span>Description text</span>
  }
  <span>Other children</span>
</FancyButton>

<!-- Prettier 3.9.4 -->
<FancyButton [label]="title">
  @content (icon) {
    <span>Icon!</span>
  }
  @content (description) {
    <span>Description text</span>
  }
  <span>Other children</span>
</FancyButton>

v3.9.3

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diff

Markdown: Fix unexpected removal of characters in liquid syntax (#​19489 by @​seiyab)

// Input
<!-- Input -->
{{ page.title
}} text

<!-- Prettier 3.9.1 -->
{{ page.title
 text

<!-- Prettier 3.9.3 -->
{{ page.title
}} text

TypeScript: Allow decorators to be used with declare on class fields (#​19492 by @​evoactivity)

Extensively used within the Ember ecosystem, decorators with declare on class fields will ignore the babel parser error and allow Prettier to format the code without breaking it.

// Input
export default class ProjectStatusComponent extends Component<ProjectStatusSig> {
  @service declare server: ServerService;
}

// Prettier 3.9.1
// SyntaxError: Decorators can't be used with a declare field. (2:3)
//  1 | export default class ProjectStatusComponent extends Component<ProjectStatusSig> {
//> 2 |   @service declare server: ServerService;
//    |   ^
//  3 | }

// Prettier 3.9.3
export default class ProjectStatusComponent extends Component<ProjectStatusSig> {
  @service declare server: ServerService;
}

v3.9.2

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v3.9.1

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diff

Markdown: Update micromark-extension-gfm-table to fix the table parse issue on performance (#​20266 by @​fisker)

See micromark/micromark-extension-gfm-table@4f43ead for details.

v3.9.0

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diff

🔗 Release Notes

v3.8.5

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diff

Flow: Support readonly as a variance annotation (#​19022 by @​marcoww6)

Flow now accepts readonly as a property variance annotation, equivalent to + (covariant/read-only).

// Input
type T = {
  readonly foo: string,
};

// Prettier 3.8.4
SyntaxError

// Prettier 3.8.5
type T = {
  readonly foo: string,
};

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👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

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