chore(deps): update core tooling

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
eslint (source)	^9.39.2 → ^9.39.5
prettier (source)	^3.8.0 → ^3.9.5

---

Release Notes

eslint/eslint (eslint)

v9.39.5

Compare Source

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)

v9.39.4

Compare Source

Bug Fixes

• f18f6c8 fix: update dependency minimatch to ^3.1.5 (#​20564) (Milos Djermanovic)
• a3c868f fix: update dependency @​eslint/eslintrc to ^3.3.4 (#​20554) (Milos Djermanovic)
• 234d005 fix: minimatch security vulnerability patch for v9.x (#​20549) (Andrej Beles)
• b1b37ee fix: update ajv to 6.14.0 to address security vulnerabilities (#​20538) (루밀LuMir)

Documentation

• 4675152 docs: add deprecation notice partial (#​20520) (Milos Djermanovic)

Chores

• b8b4eb1 chore: update dependencies for ESLint v9.39.4 (#​20596) (Francesco Trotta)
• 71b2f6b chore: package.json update for @​eslint/js release (Jenkins)
• 1d16c2f ci: pin Node.js 25.6.1 (#​20563) (Milos Djermanovic)

v9.39.3

Compare Source

Bug Fixes

• 791bf8d fix: restore TypeScript 4.0 compatibility in types (#​20504) (sethamus)

Chores

• 8594a43 chore: upgrade @​eslint/js@​9.39.3 (#​20529) (Milos Djermanovic)
• 9ceef92 chore: package.json update for @​eslint/js release (Jenkins)
• af498c6 chore: ignore /docs/v9.x in link checker (#​20453) (Milos Djermanovic)

prettier/prettier (prettier)

v3.9.5

Compare Source

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 -->
@&#8203;switch (state.mode) {
  @&#8203;default never(state);
}

<!-- Prettier 3.9.4 -->
@&#8203;switch (state.mode) {
  @&#8203;default never;
}

<!-- Prettier 3.9.5 -->
@&#8203;switch (state.mode) {
  @&#8203;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

Compare Source

v3.9.3

Compare Source

v3.9.2

Compare Source

v3.9.1

Compare Source

v3.9.0

Compare Source

diff

🔗 Release Notes

v3.8.5

Compare Source

v3.8.4

Compare Source

diff

Markdown: Fix blank lines between list items and nested sub-lists being removed in Markdown/MDX (#​17746 by @​byplayer)

Prettier was removing blank lines between list items and their nested sub-lists, converting loose lists into tight lists and changing their semantic meaning.

<!-- Input -->
- a

  - b

- c

  - d

<!-- Prettier 3.8.3 -->
- a
  - b
- c
  - d

<!-- Prettier 3.8.4 -->
- a

  - b

- c

  - d

v3.8.3

Compare Source

diff

SCSS: Prevent trailing comma in if() function (#​18471 by @​kovsu)

// Input
$value: if(sass(false): 1; else: -1);

// Prettier 3.8.2
$value: if(
  sass(false): 1; else: -1,
);

// Prettier 3.8.3
$value: if(sass(false): 1; else: -1);

v3.8.2

Compare Source

diff

Angular: Support Angular v21.2 (#​18722, #​19034 by @​fisker)

Exhaustive typechecking with @default never;

<!-- Input -->
@&#8203;switch (foo) {
  @&#8203;case (1) {}
  @&#8203;default never;
}

<!-- Prettier 3.8.1 -->
SyntaxError: Incomplete block "default never". If you meant to write the @&#8203; character, you should use the "&#&#8203;64;" HTML entity instead. (3:3)

<!-- Prettier 3.8.2 -->
@&#8203;switch (foo) {
  @&#8203;case (1) {}
  @&#8203;default never;
}

arrow function and instanceof expressions.

<!-- Input -->
@&#8203;let fn = (a) =>        a?    1:2;

{{ fn ( a         instanceof b)}}

<!-- Prettier 3.8.1 -->
@&#8203;let fn = (a) =>        a?    1:2;

{{ fn ( a         instanceof b)}}

<!-- Prettier 3.8.2 -->
@&#8203;let fn = (a) => (a ? 1 : 2);

{{ fn(a instanceof b) }}

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