Skip to content

Fix function-calc-no-unspaced-operator false negatives for unspaced operators after multiplication or division - #9357

Merged
jeddy3 merged 2 commits into
stylelint:mainfrom
sarathfrancis90:pr-calc-fix
Jun 16, 2026
Merged

jeddy3 merged 2 commits into
stylelint:mainfrom
sarathfrancis90:pr-calc-fix

Conversation

@sarathfrancis90

Copy link
Copy Markdown
Contributor

Which issue, if any, is this issue related to?

None open. This is a distinct case from the already-fixed #7181 and #9220, both of which involved only +/- operators and are now correctly caught.

Is there anything in the PR that needs further explanation?

The problem

function-calc-no-unspaced-operator misses an unspaced + or - operator whenever a * or / operator appears earlier in the same math expression. The +/- is genuinely invalid CSS (the spec requires whitespace around + and -), but no warning is reported:

a { width: calc(1px*2px+3px); } /* the `+` is missed */
a { width: calc(1px/2+3px); }   /* the `+` is missed */
a { width: calc(1px + 2px*3px+4px); } /* the second `+` is missed */

The same +/- is reported correctly when no *// precedes it, e.g. calc(3px+1px*2px).

Root cause

The expression is parsed into operations, and parsing falls into error recovery when it cannot form a complete operation. For 1px*2px+3px the parser consumes 1px, then hits the * delimiter where it expects a +/- operator (or a second operand). Since *// are not in the +/- operator set, no operation is formed and error recovery kicks in — but it consumes everything up to the next comma, semicolon, or the end of the expression. That swallows the trailing 2px+3px, so the unspaced + is never examined.

The fix

Error recovery now also treats a multiplicative operator (* or /) as a boundary and stops there, letting the parser resume scanning the operands that follow it. * and / legitimately don't require surrounding whitespace, so they're left untouched while the subsequent +/- operations are checked as usual. Autofix only inserts the missing spaces around +/- and leaves *// alone (calc(1px*2px+3px) → calc(1px*2px + 3px)), and it's idempotent.

Did you add or update tests?

Yes. Added reject cases for an unspaced +/- after *, after /, and after a * that itself follows a properly spaced operator, each asserting the warnings and the fixed output. Added accept cases for multiplication/division-only chains (calc(1px*2*3), calc(8px/2/2)) as regression guards. The new reject cases fail on main and pass with the fix. Rule tests (135), ESLint, Prettier, and remark pass locally.

Have you successfully run tests with your changes locally?

Yes.

… operators after multiplication or division
@changeset-bot

changeset-bot Bot commented Jun 12, 2026 •

Copy link
Copy Markdown

🦋 Changeset detected

Latest commit: 5f970ef

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

This PR includes changesets to release 1 package
Name Type
stylelint Minor

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 commented Jun 12, 2026 •

Copy link
Copy Markdown
Contributor

This PR is packaged and the instant preview is available (5f970ef). View the demo website.

Install it locally:

npm i -D https://pkg.pr.new/stylelint@5f970ef

@ybiquitous ybiquitous left a comment

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

@sarathfrancis90 Thanks for the pull request. Looks good 👍🏼

One quick question: In this case, is it challenging to insert whitespaces around * or / as well?
E.g., calc(1px*2px+3px) -> calc(1px * 2px + 3px)

@sarathfrancis90

Copy link
Copy Markdown
Contributor Author

Thanks! That's intentional rather than difficult. In CSS calc(), only + and - require surrounding whitespace — without it they're ambiguous with a sign (1px-2px is one value, 1px - 2px is subtraction). * and / have no such requirement, so 1px*2px is perfectly valid and this rule (which enforces the required spacing) leaves it untouched. Adding spaces around *// would be a stylistic preference beyond what the spec mandates, so it'd fit better as a separate rule/option than here. Happy to look into that separately if it's wanted.

@jeddy3

jeddy3 commented Jun 13, 2026

Copy link
Copy Markdown
Member

That's correct, it's a "Avoid errors" rule that we turn on in our recommended config.

From the rule README:

This rule checks that there is a single whitespace or a newline plus indentation before the + or - operator, and a single whitespace or a newline after that operator.

Pretty printers, like Prettier, handle the stylistic * and /.

@sarathfrancis90

Copy link
Copy Markdown
Contributor Author

Thanks, that lines up with what I had in mind — this stays scoped to the spec-required +/- spacing, and the cosmetic *// case is rightly left to formatters.

@jeddy3 jeddy3 left a comment

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Thanks for the PR. Looking good.

I've made two minor suggestions to the docs and tests, the latter so we have coveraged of -, too.

@sarathfrancis90

Copy link
Copy Markdown
Contributor Author

Thanks @jeddy3! Both applied: the division reject test now covers - (calc(1px/2-3px) → calc(1px/2 - 3px), with the two - warnings and the [19, 20] → '- ' fix), and I've dropped the extra docs example so the README stays minimal. Your suggested columns/range matched the input exactly. Tests, ESLint, Prettier, remark, and the changeset are all green locally.

@jeddy3 jeddy3 left a comment

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Thanks for making the change.

LGTM, thank you.


As per the contributing guide, please remember to commit suggestions using the GitHub UI and, if it applies here, not using a LLM to answer review comments unless purely to translate from your own language.

@Mouvedia
Mouvedia requested a review from romainmenke June 15, 2026 01:22

@ybiquitous ybiquitous left a comment

Copy link
Copy Markdown
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Thanks, LGTM 👍🏼

@jeddy3
jeddy3 merged commit cc687a6 into stylelint:main Jun 16, 2026
20 checks passed
@jeddy3

jeddy3 commented Jun 16, 2026

Copy link
Copy Markdown
Member

(@Mouvedia As per the contributing guide, please remember not to request reviews from members. Thank you.)

Please don't request a review from an individual member, as any member can review the pull request when they have time

@Mouvedia

Copy link
Copy Markdown
Member

I didn't review #9110; I completely missed https://github.com/stylelint/stylelint/pull/9110/changes#diff-eca12c0a30e25b4b46522ebf89465a03ba72a03f540796c979137931d8f92055R76.
It should have been discussed.

I see how it could be abused so I understand the intent behind the rule.
Anyhow I won't anymore but that was news to me. I hope we will discuss new rules in issues next time one is introduced.

renovate Bot added a commit to andrei-picus-tink/auto-renovate that referenced this pull request Jun 27, 2026
| datasource | package   | from    | to      |
| ---------- | --------- | ------- | ------- |
| npm        | stylelint | 17.13.0 | 17.14.0 |


## [v17.14.0](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#17140---2026-06-25)

It fixes 3 bugs, including a false negative one.

- Fixed: performance of getting module paths ([#9354](stylelint/stylelint#9354)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: performance by dynamically importing `TIMING` only on use ([#9356](stylelint/stylelint#9356)) ([@jeddy3](https://github.com/jeddy3)).
- Fixed: `function-calc-no-unspaced-operator` false negatives for unspaced `+` and `-` operators following a `*` or `/` operator ([#9357](stylelint/stylelint#9357)) ([@sarathfrancis90](https://github.com/sarathfrancis90)).
robbevp pushed a commit to robbevp/website-robbevanpetegem that referenced this pull request Oct 16, 2026
This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [eslint](https://eslint.org) ([source](https://github.com/eslint/eslint)) | devDependencies | patch | [`9.39.4` -> `9.39.5`](https://renovatebot.com/diffs/npm/eslint/9.39.4/9.39.5) |
| [prettier](https://prettier.io) ([source](https://github.com/prettier/prettier)) | devDependencies | minor | [`3.8.3` -> `3.9.10`](https://renovatebot.com/diffs/npm/prettier/3.8.3/3.9.10) |
| [stylelint](https://stylelint.io) ([source](https://github.com/stylelint/stylelint)) | devDependencies | minor | [`17.12.0` -> `17.16.0`](https://renovatebot.com/diffs/npm/stylelint/17.12.0/17.16.0) |

---

### Release Notes

<details>
<summary>eslint/eslint (eslint)</summary>

### [`v9.39.5`](https://github.com/eslint/eslint/releases/tag/v9.39.5)

[Compare Source](eslint/eslint@v9.39.4...v9.39.5)

#### Bug Fixes

- [`253be16`](eslint/eslint@253be16) fix: handle unavailable require cache (backport of [#&#8203;20812](eslint/eslint#20812) to v9.x) ([#&#8203;21065](eslint/eslint#21065)) (Eric)

#### Documentation

- [`74930ed`](eslint/eslint@74930ed) docs: switch build to Node.js 24 ([#&#8203;20894](eslint/eslint#20894)) (Milos Djermanovic)
- [`eaec8bb`](eslint/eslint@eaec8bb) docs: Add ESLint v9.x EOL notice ([#&#8203;20828](eslint/eslint#20828)) (Milos Djermanovic)

#### Chores

- [`458205f`](eslint/eslint@458205f) chore: update `@eslint/eslintrc` and `@eslint/js` for v9.39.5 ([#&#8203;21077](eslint/eslint#21077)) (Francesco Trotta)
- [`202117b`](eslint/eslint@202117b) chore: package.json update for [@&#8203;eslint/js](https://github.com/eslint/js) release (Jenkins)
- [`d9eb6ed`](eslint/eslint@d9eb6ed) test: disable warning for `vm.constants.USE_MAIN_CONTEXT_DEFAULT_LOADER` ([#&#8203;21074](eslint/eslint#21074)) (Francesco Trotta)
- [`7b431a7`](eslint/eslint@7b431a7) chore: override `re2` dependency for `@metascraper/helpers` ([#&#8203;21068](eslint/eslint#21068)) (Milos Djermanovic)
- [`daf7791`](eslint/eslint@daf7791) chore: pin [email protected] ([#&#8203;20895](eslint/eslint#20895)) (Milos Djermanovic)
- [`daee8ba`](eslint/eslint@daee8ba) ci: use pnpm in `eslint-flat-config-utils` type integration test ([#&#8203;20829](eslint/eslint#20829)) (Milos Djermanovic)
- [`116d4be`](eslint/eslint@116d4be) ci: unpin Node.js 25.x in CI ([#&#8203;20619](eslint/eslint#20619)) (Copilot)

</details>

<details>
<summary>prettier/prettier (prettier)</summary>

### [`v3.9.10`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#3910)

[Compare Source](prettier/prettier@3.9.9...3.9.10)

[diff](prettier/prettier@3.9.9...3.9.10)

##### Markdown: Update `micromark-extension-gfm-table` to fix the table parse issue on performance ([#&#8203;20266](prettier/prettier#20266) by [@&#8203;fisker](https://github.com/fisker))

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

### [`v3.9.9`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#399)

[Compare Source](prettier/prettier@3.9.8...3.9.9)

[diff](prettier/prettier@3.9.8...3.9.9)

##### Markdown: Fix text with `$` been incorrectly parsed as math syntax ([#&#8203;20140](prettier/prettier#20140) by [@&#8203;fisker](https://github.com/fisker))

<!-- prettier-ignore -->

```md
<!-- 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`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#398)

[Compare Source](prettier/prettier@3.9.7...3.9.8)

[diff](prettier/prettier@3.9.7...3.9.8)

##### Markdown: Don't let Liquid objects interrupt paragraphs ([#&#8203;20087](prettier/prettier#20087) by [@&#8203;seiyab](https://github.com/seiyab))

<!-- prettier-ignore -->

```markdown
<!-- 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`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#397)

[Compare Source](prettier/prettier@3.9.6...3.9.7)

[diff](prettier/prettier@3.9.6...3.9.7)

##### Markdown: Prevent indentation drift in list-item code blocks ([#&#8203;19647](prettier/prettier#19647), [#&#8203;19990](prettier/prettier#19990) by [@&#8203;Austin1serb](https://github.com/Austin1serb), [@&#8203;giaBaoJS](https://github.com/giaBaoJS))

<!-- prettier-ignore -->

```markdown
<!-- 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 ([#&#8203;19725](prettier/prettier#19725) by [@&#8203;fisker](https://github.com/fisker))

<!-- prettier-ignore -->

```jsx
// 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 ([#&#8203;19730](prettier/prettier#19730) by [@&#8203;wanxiankai](https://github.com/wanxiankai), [@&#8203;seiyab](https://github.com/seiyab))

<!-- prettier-ignore -->

```markdown
<!-- 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 ([#&#8203;19739](prettier/prettier#19739) by [@&#8203;lazerg](https://github.com/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.

<!-- prettier-ignore -->

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

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

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

##### Markdown: Fix Markdown blockquote containing `>` characters ([#&#8203;19802](prettier/prettier#19802) by [@&#8203;seiyab](https://github.com/seiyab))

<!-- prettier-ignore -->

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

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

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

##### Markdown: Strip blockquote markers from a setext heading's continuation lines ([#&#8203;19878](prettier/prettier#19878) by [@&#8203;Kjubikstronk](https://github.com/Kjubikstronk))

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

<!-- prettier-ignore -->

```md
<!-- 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 ([#&#8203;19987](prettier/prettier#19987) by [@&#8203;lazerg](https://github.com/lazerg))

<!-- prettier-ignore -->

```markdown
<!-- 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 ([#&#8203;20014](prettier/prettier#20014) by [@&#8203;Yahiro025](https://github.com/Yahiro025))

<!-- prettier-ignore -->

```html
<!-- Input -->
@&#8203;boundary {
<complex-chart [data]="data"/>
}
@&#8203;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 -->
@&#8203;boundary {
  <complex-chart [data]="data" />
} @&#8203;error (let err) {
  <p>{{ err.message }}</p>
}
```

### [`v3.9.6`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#396)

[Compare Source](prettier/prettier@3.9.5...3.9.6)

[diff](prettier/prettier@3.9.5...3.9.6)

##### TypeScript: Preserve quotes for methods named `new` ([#&#8203;19621](prettier/prettier#19621) by [@&#8203;kovsu](https://github.com/kovsu))

<!-- prettier-ignore -->

```tsx
// 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` ([#&#8203;19624](prettier/prettier#19624), [#&#8203;19675](prettier/prettier#19675) by [@&#8203;fisker](https://github.com/fisker))

<!-- prettier-ignore -->

```tsx
// 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` ([#&#8203;19628](prettier/prettier#19628), [#&#8203;19629](prettier/prettier#19629) by [@&#8203;fisker](https://github.com/fisker))

`@prettier/plugin-yuku` is powered by [Yuku](https://yuku.fyi/) (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:

   ```bash
   yarn add --dev prettier @&#8203;prettier/plugin-yuku
   ```

2. Add it to your `.prettierrc`:

   ```yaml
   plugins:
     - "@&#8203;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](https://github.com/prettier/prettier/tree/main/packages/plugin-yuku).

Big thanks to [@&#8203;arshad-yaseen](https://github.com/arshad-yaseen) for his excellent work.

### [`v3.9.5`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#395)

[Compare Source](prettier/prettier@3.9.4...3.9.5)

[diff](prettier/prettier@3.9.4...3.9.5)

##### Markdown: Cap ordered list mark at 999,999,999 ([#&#8203;19351](prettier/prettier#19351) by [@&#8203;tats-u](https://github.com/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:

<!-- prettier-ignore -->

```markdown
<!-- 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 ([#&#8203;19487](prettier/prettier#19487) by [@&#8203;andersk](https://github.com/andersk))

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

<!-- prettier-ignore -->

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

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

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

##### Less: Remove extra spaces after `[` in map lookups ([#&#8203;19503](prettier/prettier#19503) by [@&#8203;kovsu](https://github.com/kovsu))

<!-- prettier-ignore -->

```less
// Input
.foo {
  color: #theme[ primary];
  color: #theme[@&#8203;name];
  color: #theme[@&#8203;@&#8203;name];
}

// Prettier 3.9.4
.foo {
  color: #theme[ primary];
  color: #theme[ @&#8203;name];
  color: #theme[ @&#8203;@&#8203;name];
}

// Prettier 3.9.5
.foo {
  color: #theme[primary];
  color: #theme[@&#8203;name];
  color: #theme[@&#8203;@&#8203;name];
}
```

##### CSS: Prevent addition space in `type()` with `+` ([#&#8203;19516](prettier/prettier#19516) by [@&#8203;bigandy](https://github.com/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.

<!-- prettier-ignore -->

```css
/* 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 ([#&#8203;19517](prettier/prettier#19517) by [@&#8203;kovsu](https://github.com/kovsu))

<!-- prettier-ignore -->

```less
// Input
a {
  box-shadow  +  : 0 0 1px #&#8203;000;
}

// Prettier 3.9.4
a {
  box-shadow+  : 0 0 1px #&#8203;000;
}

// Prettier 3.9.5
a {
  box-shadow+: 0 0 1px #&#8203;000;
}
```

##### Markdown: Preserve wiki links with aliases ([#&#8203;19527](prettier/prettier#19527) by [@&#8203;kovsu](https://github.com/kovsu))

<!-- prettier-ignore -->

```markdown
<!-- 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 ([#&#8203;19565](prettier/prettier#19565) by [@&#8203;kirkwaiblinger](https://github.com/kirkwaiblinger))

<!-- prettier-ignore -->

```tsx
// 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 ([#&#8203;19567](prettier/prettier#19567) by [@&#8203;Janther](https://github.com/Janther))

[email protected] 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 ([#&#8203;19568](prettier/prettier#19568) by [@&#8203;fisker](https://github.com/fisker))

<!-- prettier-ignore -->

```flow
// Input
declare module "foo" {}

// Prettier 3.9.4
declare module "foo" {
}

// Prettier 3.9.5
declare module "foo" {}
```

##### Angular: Support expression for exhaustive typechecking ([#&#8203;19571](prettier/prettier#19571) by [@&#8203;fisker](https://github.com/fisker))

<!-- prettier-ignore -->

```html
<!-- 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 ([#&#8203;19572](prettier/prettier#19572) by [@&#8203;fisker](https://github.com/fisker))

<!-- prettier-ignore -->

```tsx
// 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 ([#&#8203;19574](prettier/prettier#19574) by [@&#8203;kovsu](https://github.com/kovsu))

<!-- prettier-ignore -->

```less
// 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` ([#&#8203;19581](prettier/prettier#19581) by [@&#8203;fisker](https://github.com/fisker))

<!-- prettier-ignore -->

```jsx
// 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 ([#&#8203;19583](prettier/prettier#19583) by [@&#8203;fisker](https://github.com/fisker))

<!-- prettier-ignore -->

```tsx
// 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`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#394)

[Compare Source](prettier/prettier@3.9.3...3.9.4)

[diff](prettier/prettier@3.9.3...3.9.4)

##### Angular: Format `@content(name)` -> `@content (name)` to align with other block syntax ([#&#8203;19499](prettier/prettier#19499) by [@&#8203;fisker](https://github.com/fisker))

<!-- prettier-ignore -->

```html
<!-- Input -->
<FancyButton [label]="title">
  @&#8203;content (icon) {
    <span>Icon!</span>
  }
  @&#8203;content (description) {
    <span>Description text</span>
  }
  <span>Other children</span>
</FancyButton>

<!-- Prettier 3.9.3 -->
<FancyButton [label]="title">
  @&#8203;content(icon) {
    <span>Icon!</span>
  }
  @&#8203;content(description) {
    <span>Description text</span>
  }
  <span>Other children</span>
</FancyButton>

<!-- Prettier 3.9.4 -->
<FancyButton [label]="title">
  @&#8203;content (icon) {
    <span>Icon!</span>
  }
  @&#8203;content (description) {
    <span>Description text</span>
  }
  <span>Other children</span>
</FancyButton>
```

### [`v3.9.3`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#393)

[Compare Source](prettier/prettier@3.9.2...3.9.3)

[diff](prettier/prettier@3.9.1...3.9.3)

##### Markdown: Fix unexpected removal of characters in liquid syntax ([#&#8203;19489](prettier/prettier#19489) by [@&#8203;seiyab](https://github.com/seiyab))

<!-- prettier-ignore -->

```md
// 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 ([#&#8203;19492](prettier/prettier#19492) by [@&#8203;evoactivity](https://github.com/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.

<!-- prettier-ignore -->

```ts
// Input
export default class ProjectStatusComponent extends Component<ProjectStatusSig> {
  @&#8203;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 |   @&#8203;service declare server: ServerService;
//    |   ^
//  3 | }

// Prettier 3.9.3
export default class ProjectStatusComponent extends Component<ProjectStatusSig> {
  @&#8203;service declare server: ServerService;
}
```

### [`v3.9.2`](prettier/prettier@3.9.1...3.9.2)

[Compare Source](prettier/prettier@3.9.1...3.9.2)

### [`v3.9.1`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#3910)

[Compare Source](prettier/prettier@3.9.0...3.9.1)

[diff](prettier/prettier@3.9.9...3.9.10)

##### Markdown: Update `micromark-extension-gfm-table` to fix the table parse issue on performance ([#&#8203;20266](prettier/prettier#20266) by [@&#8203;fisker](https://github.com/fisker))

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

### [`v3.9.0`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#390)

[Compare Source](prettier/prettier@3.8.5...3.9.0)

[diff](prettier/prettier@3.8.5...3.9.0)

🔗 [Release Notes](https://prettier.io/blog/2026/06/27/3.9.0)

### [`v3.8.5`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#385)

[Compare Source](prettier/prettier@3.8.4...3.8.5)

[diff](prettier/prettier@3.8.4...3.8.5)

##### Flow: Support `readonly` as a variance annotation ([#&#8203;19022](prettier/prettier#19022) by [@&#8203;marcoww6](https://github.com/marcoww6))

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

<!-- prettier-ignore -->

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

// Prettier 3.8.4
SyntaxError

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

### [`v3.8.4`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#384)

[Compare Source](prettier/prettier@3.8.3...3.8.4)

[diff](prettier/prettier@3.8.3...3.8.4)

##### Markdown: Fix blank lines between list items and nested sub-lists being removed in Markdown/MDX ([#&#8203;17746](prettier/prettier#17746) by [@&#8203;byplayer](https://github.com/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.

<!-- prettier-ignore -->

```markdown
<!-- Input -->
- a

  - b

- c

  - d

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

<!-- Prettier 3.8.4 -->
- a

  - b

- c

  - d
```

</details>

<details>
<summary>stylelint/stylelint (stylelint)</summary>

### [`v17.16.0`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#17160---2026-10-01)

[Compare Source](stylelint/stylelint@17.15.0...17.16.0)

It fixes 2 bugs in the `layout-mappings` rules. This will likely be the last `17.x` release, as we prepare for `18.0.0`.

- Fixed: `property-layout-mappings` and `unit-layout-mappings` false negatives for uppercase property names and units ([#&#8203;9485](stylelint/stylelint#9485)) ([@&#8203;giaBaoJS](https://github.com/giaBaoJS)).
- Fixed: `value-keyword-layout-mappings` false positives for `caption-side` ([#&#8203;9483](stylelint/stylelint#9483)) ([@&#8203;giaBaoJS](https://github.com/giaBaoJS)).

### [`v17.15.0`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#17150---2026-09-04)

[Compare Source](stylelint/stylelint@17.14.1...17.15.0)

It adds 1 new rule and 2 new rule options, and fixes 4 bugs.

- Added: `selector-no-unmatchable` rule ([#&#8203;9451](stylelint/stylelint#9451)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Added: `ignoreFunctions: []` to `color-named` and `color-no-hex` ([#&#8203;9463](stylelint/stylelint#9463)) ([@&#8203;jsmitty12](https://github.com/jsmitty12)).
- Fixed: `custom-property-no-missing-var-function` false positives for anchor positioning ([#&#8203;9466](stylelint/stylelint#9466)) ([@&#8203;giaBaoJS](https://github.com/giaBaoJS)).
- Fixed: `declaration-block-no-redundant-longhand-properties` autofix for `font` shorthand ([#&#8203;9402](stylelint/stylelint#9402)) ([@&#8203;sarathfrancis90](https://github.com/sarathfrancis90)).
- Fixed: `declaration-property-max-values` false positives for interpolated inline expressions ([#&#8203;9437](stylelint/stylelint#9437)) ([@&#8203;alexchen-sys](https://github.com/alexchen-sys)).
- Fixed: `selector-no-invalid` false negatives for pseudo-elements, combinators and nested `:has()` ([#&#8203;9452](stylelint/stylelint#9452)) ([@&#8203;jeddy3](https://github.com/jeddy3)).

### [`v17.14.1`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#17141---2026-07-20)

[Compare Source](stylelint/stylelint@17.14.0...17.14.1)

It fixes 4 bugs.

- Fixed: `quiet` option suppresses `report*` warning reports ([#&#8203;9387](stylelint/stylelint#9387)) ([@&#8203;ychampion](https://github.com/ychampion)).
- Fixed: reported range of unknown rules ([#&#8203;9385](stylelint/stylelint#9385)) ([@&#8203;ybiquitous](https://github.com/ybiquitous)).
- Fixed: `declaration-block-no-redundant-longhand-properties` autofix producing invalid `background` shorthand when `background-size` is present ([#&#8203;9364](stylelint/stylelint#9364)) ([@&#8203;sarathfrancis90](https://github.com/sarathfrancis90)).
- Fixed: `rule-empty-line-before` false positives for shared-line comments with `except: ["after-single-line-comment"]` ([#&#8203;9394](stylelint/stylelint#9394)) ([@&#8203;sarathfrancis90](https://github.com/sarathfrancis90)).

### [`v17.14.0`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#17140---2026-06-25)

[Compare Source](stylelint/stylelint@17.13.0...17.14.0)

It fixes 3 bugs, including a false negative one.

- Fixed: performance of getting module paths ([#&#8203;9354](stylelint/stylelint#9354)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: performance by dynamically importing `TIMING` only on use ([#&#8203;9356](stylelint/stylelint#9356)) ([@&#8203;jeddy3](https://github.com/jeddy3)).
- Fixed: `function-calc-no-unspaced-operator` false negatives for unspaced `+` and `-` operators following a `*` or `/` operator ([#&#8203;9357](stylelint/stylelint#9357)) ([@&#8203;sarathfrancis90](https://github.com/sarathfrancis90)).

### [`v17.13.0`](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#17130---2026-06-06)

[Compare Source](stylelint/stylelint@17.12.0...17.13.0)

It fixes 3 bugs, including a false negative one.

- Fixed: `declaration-block-no-duplicate-properties` false negatives for interleaved non-consecutive duplicates with `ignore: ["consecutive-duplicates(-*)"]` ([#&#8203;9324](stylelint/stylelint#9324)) ([@&#8203;sarathfrancis90](https://github.com/sarathfrancis90)).
- Fixed: `selector-max-type` false positives for nested selectors ([#&#8203;9319](stylelint/stylelint#9319)) ([@&#8203;romainmenke](https://github.com/romainmenke)).
- Fixed: `selector-type-no-unknown` false positives for `install` ([#&#8203;9308](stylelint/stylelint#9308)) ([@&#8203;Mouvedia](https://github.com/Mouvedia)).

</details>

---

### Configuration

📅 **Schedule**: 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.

👻 **Immortal**: This PR will be recreated if closed unmerged. Get [config help](https://github.com/renovatebot/renovate/discussions) if that's undesired.

---

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

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MS42MS4wIiwidXBkYXRlZEluVmVyIjoiNDEuNjEuMCIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==-->

Reviewed-on: https://git.robbevp.be/robbevp/website-robbevanpetegem/pulls/511
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Development

Successfully merging this pull request may close these issues.

Fix function-calc-no-unspaced-operator false negatives when combined with properly spaced operator

4 participants