bump stylelint 16.17.0

docs/description/alpha-value-notation.md

@@ -9,9 +9,9 @@ Specify percentage or number notation for alpha-values.
  *                         This notation */
 ```
 
-The [`fix` option](https://github.com/stylelint/stylelint/16.10.0/docs/user-guide/options.md#fix) can automatically fix all of the problems reported by this rule.
+The [`fix` option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/options.md#fix) can automatically fix all of the problems reported by this rule.
 
-The [`message` secondary option](https://github.com/stylelint/stylelint/16.10.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
+The [`message` secondary option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
 
 ## Options
 

docs/description/annotation-no-unknown.md

@@ -11,7 +11,7 @@ a { color: green !imprtant; }
 
 This rule considers annotations defined in the CSS Specifications, up to and including Editor's Drafts, to be known.
 
-The [`message` secondary option](https://github.com/stylelint/stylelint/16.10.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
+The [`message` secondary option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
 
 ## Options
 

docs/description/at-rule-allowed-list.md

@@ -9,7 +9,9 @@ Specify a list of allowed at-rules.
  * At-rules like this */
 ```
 
-The [`message` secondary option](https://github.com/stylelint/stylelint/16.10.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
+This rule ignores the `@charset` rule.
+
+The [`message` secondary option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
 
 ## Options
 

docs/description/at-rule-descriptor-no-unknown.md

@@ -0,0 +1,64 @@
+# at-rule-descriptor-no-unknown
+
+Disallow unknown descriptors for at-rules.
+
+<!-- prettier-ignore -->
+```css
+@counter-style foo {
+  unknown-descriptor: cyclic;
+/**                ↑
+ * Descriptors like this */
+}
+```
+
+This rule considers descriptors defined in the CSS Specifications, up to and including Editor's Drafts, to be known.
+
+You can filter the [CSSTree Syntax Reference](https://csstree.github.io/docs/syntax/) to find out what descriptors are known for an at-rule.
+
+This rule is only appropriate for CSS. You should not turn it on for CSS-like languages, such as SCSS or Less.
+
+The [`message` secondary option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
+
+This rule checks descriptors within at-rules. To check properties, you can use the [`property-no-unknown`](https://github.com/stylelint/stylelint/16.17.0/lib/rules/property-no-unknown/README.md) rule.
+
+For customizing syntax, see the [`languageOptions`](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/configure.md#languageoptions) section.
+
+Prior art:
+
+- [stylelint-csstree-validator](https://www.npmjs.com/package/stylelint-csstree-validator)
+
+## Options
+
+### `true`
+
+The following patterns are considered problems:
+
+<!-- prettier-ignore -->
+```css
+@counter-style foo {
+  unknown-descriptor: cyclic;
+}
+```
+
+<!-- prettier-ignore -->
+```css
+@property --foo {
+  unknown-descriptor: "<color>";
+}
+```
+
+The following patterns are _not_ considered problems:
+
+<!-- prettier-ignore -->
+```css
+@counter-style foo {
+  system: cyclic;
+}
+```
+
+<!-- prettier-ignore -->
+```css
+@property --foo {
+  syntax: "<color>";
+}
+```

docs/description/at-rule-descriptor-value-no-unknown.md

@@ -0,0 +1,74 @@
+# at-rule-descriptor-value-no-unknown
+
+Disallow unknown values for descriptors within at-rules.
+
+<!-- prettier-ignore -->
+```css
+@counter-style foo {
+  system: unknown;
+/**       ↑
+ * Values like this */
+}
+```
+
+This rule considers descriptors and values defined in the CSS Specifications, up to and including Editor's Drafts, to be known.
+
+You can filter the [CSSTree Syntax Reference](https://csstree.github.io/docs/syntax/) to find out what values are valid for a descriptor of an at-rule.
+
+This rule is only appropriate for CSS. You should not turn it on for CSS-like languages, such as SCSS or Less.
+
+The [`message` secondary option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
+
+This rule checks descriptor values within at-rules. You can use [`declaration-property-value-no-unknown`](https://github.com/stylelint/stylelint/16.17.0/lib/rules/declaration-property-value-no-unknown/README.md) to disallow unknown values for properties within declarations, and [`at-rule-descriptor-no-unknown`](https://github.com/stylelint/stylelint/16.17.0/lib/rules/at-rule-descriptor-no-unknown/README.md) to disallow unknown descriptors for at-rules.
+
+This rule overlaps with:
+
+- [`color-no-invalid-hex`](https://github.com/stylelint/stylelint/16.17.0/lib/rules/color-no-invalid-hex/README.md)
+- [`function-linear-gradient-no-nonstandard-direction`](https://github.com/stylelint/stylelint/16.17.0/lib/rules/function-linear-gradient-no-nonstandard-direction/README.md)
+- [`function-no-unknown`](https://github.com/stylelint/stylelint/16.17.0/lib/rules/function-no-unknown/README.md)
+- [`string-no-newline`](https://github.com/stylelint/stylelint/16.17.0/lib/rules/string-no-newline/README.md)
+- [`unit-no-unknown`](https://github.com/stylelint/stylelint/16.17.0/lib/rules/unit-no-unknown/README.md)
+
+You can either turn off the rules or configure them to ignore the overlaps.
+
+For customizing syntax, see the [`languageOptions`](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/configure.md#languageoptions) section.
+
+Prior art:
+
+- [stylelint-csstree-validator](https://www.npmjs.com/package/stylelint-csstree-validator)
+
+## Options
+
+### `true`
+
+The following patterns are considered problems:
+
+<!-- prettier-ignore -->
+```css
+@counter-style foo {
+  system: unknown;
+}
+```
+
+<!-- prettier-ignore -->
+```css
+@property --foo {
+  syntax: unknown;
+}
+```
+
+The following patterns are _not_ considered problems:
+
+<!-- prettier-ignore -->
+```css
+@counter-style foo {
+  system: numeric;
+}
+```
+
+<!-- prettier-ignore -->
+```css
+@property --foo {
+  syntax: "<color>";
+}
+```

docs/description/at-rule-disallowed-list.md

@@ -9,7 +9,9 @@ Specify a list of disallowed at-rules.
  * At-rules like this */
 ```
 
-The [`message` secondary option](https://github.com/stylelint/stylelint/16.10.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
+This rule ignores the `@charset` rule.
+
+The [`message` secondary option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
 
 ## Options
 

docs/description/at-rule-empty-line-before.md

@@ -14,9 +14,10 @@ a {}
 This rule ignores:
 
 - at-rules that are the very first node in the source
-- `@import` in Less.
+- the `@charset` rule
+- `@import` in Less
 
-The [`fix` option](https://github.com/stylelint/stylelint/16.10.0/docs/user-guide/options.md#fix) can automatically fix all of the problems reported by this rule.
+The [`fix` option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/options.md#fix) can automatically fix all of the problems reported by this rule.
 
 ## Options
 
@@ -90,8 +91,6 @@ The following patterns are _not_ considered problems:
 
 <!-- prettier-ignore -->
 ```css
-@charset "UTF-8";
-
 @import url(x.css);
 @import url(y.css);
 
@@ -163,18 +162,18 @@ The following patterns are _not_ considered problems:
 
 <!-- prettier-ignore -->
 ```css
-@charset "UTF-8";
-
 @import url(x.css);
 @import url(y.css);
+
+@namespace svg url('http://www.w3.org/2000/svg');
 ```
 
 <!-- prettier-ignore -->
 ```css
-@charset "UTF-8";
-
 @import url(x.css); /* comment */
 @import url(y.css);
+
+@namespace svg url('http://www.w3.org/2000/svg');
 ```
 
 <!-- prettier-ignore -->
@@ -357,10 +356,10 @@ The following patterns are _not_ considered problems:
 <!-- prettier-ignore -->
 ```css
 
-@charset "UTF-8";
-
 @import url(x.css);
 @import url(y.css);
+
+@namespace svg url('http://www.w3.org/2000/svg');
 ```
 
 <!-- prettier-ignore -->
@@ -400,7 +399,7 @@ The following patterns are _not_ considered problems:
 @media print {}
 ```
 
-### `ignoreAtRules: ["array", "of", "at-rules"]`
+### `ignoreAtRules: ["/regex/", /regex/, "string"]`
 
 Ignore specified at-rules.
 
@@ -409,13 +408,19 @@ For example, with `"always"`.
 Given:
 
 ```json
-["import"]
+["namespace", "/^my-/"]
 ```
 
 The following patterns are _not_ considered problems:
 
 <!-- prettier-ignore -->
 ```css
-@charset "UTF-8";
-@import {}
+@import "foo.css";
+@namespace svg url('http://www.w3.org/2000/svg');
+```
+
+<!-- prettier-ignore -->
+```css
+a {}
+@my-at-rule {}
 ```

docs/description/at-rule-no-deprecated.md

@@ -0,0 +1,77 @@
+# at-rule-no-deprecated
+
+Disallow deprecated at-rules.
+
+<!-- prettier-ignore -->
+```css
+    @viewport {}
+/** ↑
+ * At-rules like this */
+```
+
+This rule flags at-rules that were removed or deprecated after being in the CSS specifications, including editor drafts, and were subsequently either:
+
+- shipped in a stable version of a browser
+- shipped by a developer channel/edition browser
+- shipped but behind experimental flags
+- polyfilled with some adoption before any browser actually shipped
+- had an MDN page at one point in time
+
+The [`fix` option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/options.md#fix) can automatically fix some of the problems reported by this rule.
+
+The [`message` secondary option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/configure.md#message) accept arguments.
+
+Prior art:
+
+- [@csstools/stylelint-no-at-nest-rule](https://www.npmjs.com/package/@csstools/stylelint-no-at-nest-rule)
+- [@isnotdefined/no-obsolete](https://www.npmjs.com/package/@isnotdefined/stylelint-plugin)
+
+## Options
+
+### `true`
+
+The following patterns are considered problems:
+
+<!-- prettier-ignore -->
+```css
+@viewport {}
+```
+
+<!-- prettier-ignore -->
+```css
+a { @apply foo; }
+```
+
+The following patterns are _not_ considered problems:
+
+<!-- prettier-ignore -->
+```css
+@starting-style {}
+```
+
+<!-- prettier-ignore -->
+```css
+a { @layer {} }
+```
+
+## Optional secondary options
+
+### `ignoreAtRules: ["/regex/", /regex/, "string"]`
+
+Given:
+
+```json
+["/^view/", "apply"]
+```
+
+The following patterns are _not_ considered problems:
+
+<!-- prettier-ignore -->
+```css
+@viewport {}
+```
+
+<!-- prettier-ignore -->
+```css
+a { @apply foo; }
+```

docs/description/at-rule-no-unknown.md

@@ -11,7 +11,9 @@ Disallow unknown at-rules.
 
 This rule considers at-rules defined in the CSS Specifications, up to and including Editor's Drafts, to be known.
 
-The [`message` secondary option](https://github.com/stylelint/stylelint/16.10.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
+The [`message` secondary option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
+
+For customizing syntax, see the [`languageOptions`](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/configure.md#languageoptions) section.
 
 ## Options
 
@@ -26,16 +28,6 @@ The following patterns are considered problems:
 
 The following patterns are _not_ considered problems:
 
-<!-- prettier-ignore -->
-```css
-@charset "UTF-8";
-```
-
-<!-- prettier-ignore -->
-```css
-@CHARSET "UTF-8";
-```
-
 <!-- prettier-ignore -->
 ```css
 @media (max-width: 960px) {}

docs/description/at-rule-no-vendor-prefix.md

@@ -11,9 +11,9 @@ Disallow vendor prefixes for at-rules.
 
 This rule ignores non-standard vendor-prefixed at-rules that aren't handled by [Autoprefixer](https://github.com/postcss/autoprefixer).
 
-The [`fix` option](https://github.com/stylelint/stylelint/16.10.0/docs/user-guide/options.md#fix) can automatically fix all of the problems reported by this rule. However, it will not remove duplicate at-rules produced when the prefixes are removed. You can use [Autoprefixer](https://github.com/postcss/autoprefixer) itself, with the [`add` option off and the `remove` option on](https://github.com/postcss/autoprefixer#options), in these situations.
+The [`fix` option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/options.md#fix) can automatically fix all of the problems reported by this rule. However, it will not remove duplicate at-rules produced when the prefixes are removed. You can use [Autoprefixer](https://github.com/postcss/autoprefixer) itself, with the [`add` option off and the `remove` option on](https://github.com/postcss/autoprefixer#options), in these situations.
 
-The [`message` secondary option](https://github.com/stylelint/stylelint/16.10.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
+The [`message` secondary option](https://github.com/stylelint/stylelint/16.17.0/docs/user-guide/configure.md#message) can accept the arguments of this rule.
 
 ## Options