Vendor prefixes should not be used Open
-webkit-appearance: none;
- Read upRead up
- Exclude checks
No Vendor Prefixes
Rule no-vendor-prefixes
will enforce that vendor prefixes are not allowed to be used.
List of prefixes affected by default: * webkit * moz * ms
Options
-
additional-identifiers
:[array of additional prefixes to check for]
(defaults to empty array[]
) -
excluded-identifiers
:[array of prefixes to exclude checking for]
(defaults to empty array[]
) -
ignore-non-standard
:true
:false
(defaults tofalse
)
Examples
When enabled, the following are disallowed:
@-webkit-keyframes anim {
0% { opacity: 0; }
}
.ms-block {
-ms-hyphenate-limit-lines: no-limit;
}
::-moz-placeholder {
content: '';
}
.foo {
-webkit-transition: none;
}
.bar {
position: -moz-sticky;
}
Additional Identifiers
When additional-identifiers
contains a custom prefix value of khtml
as show below
no-vendor-prefixes:
- 1
-
additional-identifiers:
- khtml
The following would now also be disallowed
.baz {
position: -khtml-sticky;
}
Excluded Identifiers
When excluded-identifiers
contains currently disallowed prefix values such as webkit
and moz
as show below
no-vendor-prefixes:
- 1
-
excluded-identifiers:
- webkit
- moz
The following would now be allowed
@-webkit-keyframes anim {
0% { opacity: 0; }
}
::-moz-placeholder {
content: '';
}
.foo {
-webkit-transition: none;
}
.bar {
position: -moz-sticky;
}
While the following would remain disallowed
.ms-block {
-ms-hyphenate-limit-lines: no-limit;
}
Ignore Non Standard
ignore-non-standard
is an option that allows you to specify whether only standard properties from our properties list should be affected by this rule or if any prefixed property / element should be affected.
When ignore-non-standard
is set to false
the following are disallowed, when ignore-non-standard
is set to true
the following are allowed:
html {
-webkit-tap-highlight-color: $link-color-hover;
}
button::-moz-focus-inner,
input::-moz-focus-inner {
border: 0;
padding: 0;
}
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
height: auto;
}
A value of none
is not allowed. 0
must be used. Open
border: none;
- Read upRead up
- Exclude checks
Border Zero
Rule border-zero
will enforce whether one should use 0
or none
when specifying a zero border
value
Options
-
convention
:'0'
/'none'
(defaults to0
)
If an invalid convention is provided the rule will default back to
convention: '0'
. An extra warning/error will also be thrown online 1
column 1
of a file with a lint issue to inform you of this fact.
Examples
When convention: '0'
, the following are allowed. When convention: 'none'
, the following are disallowed:
.foo {
border: 0;
}
.bar {
border-right: 0;
}
When convention: 'none'
, the following are allowed. When convention: '0'
, the following are disallowed:
.foo {
border: none;
}
.bar {
border-left: none;
}
Invalid conventions
When the invalid convention convention: 'zero'
is supplied, the following are allowed as the rule defaults to convention: '0'
.
.foo {
border: none;
}
.bar {
border-left: 0;
}
Expected text-align
, found background-color
Open
background-color: $color-btns;
- Read upRead up
- Exclude checks
Property Sort Order
Rule property-sort-order
will enforce the order in which declarations are written.
Options
-
order
:'alphabetical'
,'concentric'
,'recess'
,'smacss'
, or[array of properties]
(defaults toalphabetical
. Unknown properties are sorted alphabetically) -
ignore-custom-properties
:true
/false
(defaults tofalse
)
Property orders: https://github.com/sasstools/sass-lint/tree/develop/lib/config/property-sort-orders
Examples
When enabled (assuming order: alphabetical
), the following are allowed:
.foo {
content: 'baz';
height: 100vh;
width: 100vw;
}
When enabled (assuming order: alphabetical
), the following are disallowed:
.foo {
width: 100vw;
height: 100vh;
content: 'baz';
}
Custom Sort Orders
You have the option to create your own custom property sort orders. These are specified in your .sass-lint.yml
file as below:
property-sort-order:
- 1
-
order:
- border
- display
- color
When the custom order is specified as above, the following are allowed:
.foo {
border: 1px solid blue;
display: block;
color: red;
}
When the custom order is specified as above, the following are disallowed:
.foo {
display: block;
color: red;
border: 1px solid blue;
}
Ignore Custom Properties
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be allowed
.foo {
border: 1px solid blue;
color: red;
composes: heading;
display: block;
}
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be disallowed
.foo {
composes: heading; // not in alphabetical order
border: 1px solid blue;
color: red;
display: block;
}
When ignore-custom-properties: true
(assume order: 'alphabetical'
) the following would be allowed
.foo {
composes: heading; // custom properties ignored
border: 1px solid blue;
color: red;
display: block;
}
!important not allowed Open
text-decoration: none !important;
- Read upRead up
- Exclude checks
No Important
Rule no-important
will enforce that important declarations are not allowed to be used.
Examples
When enabled, the following are disallowed:
.foo {
content: 'bar' !important;
}
Expected font-weight
, found width
Open
width: 20%;
- Read upRead up
- Exclude checks
Property Sort Order
Rule property-sort-order
will enforce the order in which declarations are written.
Options
-
order
:'alphabetical'
,'concentric'
,'recess'
,'smacss'
, or[array of properties]
(defaults toalphabetical
. Unknown properties are sorted alphabetically) -
ignore-custom-properties
:true
/false
(defaults tofalse
)
Property orders: https://github.com/sasstools/sass-lint/tree/develop/lib/config/property-sort-orders
Examples
When enabled (assuming order: alphabetical
), the following are allowed:
.foo {
content: 'baz';
height: 100vh;
width: 100vw;
}
When enabled (assuming order: alphabetical
), the following are disallowed:
.foo {
width: 100vw;
height: 100vh;
content: 'baz';
}
Custom Sort Orders
You have the option to create your own custom property sort orders. These are specified in your .sass-lint.yml
file as below:
property-sort-order:
- 1
-
order:
- border
- display
- color
When the custom order is specified as above, the following are allowed:
.foo {
border: 1px solid blue;
display: block;
color: red;
}
When the custom order is specified as above, the following are disallowed:
.foo {
display: block;
color: red;
border: 1px solid blue;
}
Ignore Custom Properties
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be allowed
.foo {
border: 1px solid blue;
color: red;
composes: heading;
display: block;
}
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be disallowed
.foo {
composes: heading; // not in alphabetical order
border: 1px solid blue;
color: red;
display: block;
}
When ignore-custom-properties: true
(assume order: 'alphabetical'
) the following would be allowed
.foo {
composes: heading; // custom properties ignored
border: 1px solid blue;
color: red;
display: block;
}
Expected padding
, found font-weight
Open
font-weight: bold;
- Read upRead up
- Exclude checks
Property Sort Order
Rule property-sort-order
will enforce the order in which declarations are written.
Options
-
order
:'alphabetical'
,'concentric'
,'recess'
,'smacss'
, or[array of properties]
(defaults toalphabetical
. Unknown properties are sorted alphabetically) -
ignore-custom-properties
:true
/false
(defaults tofalse
)
Property orders: https://github.com/sasstools/sass-lint/tree/develop/lib/config/property-sort-orders
Examples
When enabled (assuming order: alphabetical
), the following are allowed:
.foo {
content: 'baz';
height: 100vh;
width: 100vw;
}
When enabled (assuming order: alphabetical
), the following are disallowed:
.foo {
width: 100vw;
height: 100vh;
content: 'baz';
}
Custom Sort Orders
You have the option to create your own custom property sort orders. These are specified in your .sass-lint.yml
file as below:
property-sort-order:
- 1
-
order:
- border
- display
- color
When the custom order is specified as above, the following are allowed:
.foo {
border: 1px solid blue;
display: block;
color: red;
}
When the custom order is specified as above, the following are disallowed:
.foo {
display: block;
color: red;
border: 1px solid blue;
}
Ignore Custom Properties
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be allowed
.foo {
border: 1px solid blue;
color: red;
composes: heading;
display: block;
}
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be disallowed
.foo {
composes: heading; // not in alphabetical order
border: 1px solid blue;
color: red;
display: block;
}
When ignore-custom-properties: true
(assume order: 'alphabetical'
) the following would be allowed
.foo {
composes: heading; // custom properties ignored
border: 1px solid blue;
color: red;
display: block;
}
Expected border
, found width
Open
width: 60%;
- Read upRead up
- Exclude checks
Property Sort Order
Rule property-sort-order
will enforce the order in which declarations are written.
Options
-
order
:'alphabetical'
,'concentric'
,'recess'
,'smacss'
, or[array of properties]
(defaults toalphabetical
. Unknown properties are sorted alphabetically) -
ignore-custom-properties
:true
/false
(defaults tofalse
)
Property orders: https://github.com/sasstools/sass-lint/tree/develop/lib/config/property-sort-orders
Examples
When enabled (assuming order: alphabetical
), the following are allowed:
.foo {
content: 'baz';
height: 100vh;
width: 100vw;
}
When enabled (assuming order: alphabetical
), the following are disallowed:
.foo {
width: 100vw;
height: 100vh;
content: 'baz';
}
Custom Sort Orders
You have the option to create your own custom property sort orders. These are specified in your .sass-lint.yml
file as below:
property-sort-order:
- 1
-
order:
- border
- display
- color
When the custom order is specified as above, the following are allowed:
.foo {
border: 1px solid blue;
display: block;
color: red;
}
When the custom order is specified as above, the following are disallowed:
.foo {
display: block;
color: red;
border: 1px solid blue;
}
Ignore Custom Properties
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be allowed
.foo {
border: 1px solid blue;
color: red;
composes: heading;
display: block;
}
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be disallowed
.foo {
composes: heading; // not in alphabetical order
border: 1px solid blue;
color: red;
display: block;
}
When ignore-custom-properties: true
(assume order: 'alphabetical'
) the following would be allowed
.foo {
composes: heading; // custom properties ignored
border: 1px solid blue;
color: red;
display: block;
}
Class '.flash_success' should be written in lowercase with hyphens Open
.flash_success {
- Read upRead up
- Exclude checks
Class Name Format
Rule class-name-format
will enforce a convention for class names.
Options
-
allow-leading-underscore
:true
/false
(defaults totrue
) -
convention
:'hyphenatedlowercase'
(default),camelcase
,snakecase
,strictbem
,hyphenatedbem
, or a Regular Expression that the class name must match (e.g.^[_A-Z]+$
) -
convention-explanation
: Custom explanation to display to the user if a class doesn't adhere to the convention -
ignore
: Array of names to ignore
Example 1
Settings:
- allow-leading-underscore: true
- convention: hyphenatedlowercase
When enabled, the following are allowed:
.hyphenated-lowercase {
content: '';
&._with-leading-underscore {
content: '';
}
}
.foo {
@extend .hyphenated-lowercase;
}
When enabled, the following are disallowed:
.HYPHENATED-UPPERCASE {
content: '';
}
.camelCase {
content: '';
@extend .snake_case;
}
Example 2
Settings:
- allow-leading-underscore: false
- convention: hyphenatedlowercase
When enabled, the following are allowed:
.hyphenated-lowercase {
content: '';
&.another-hyphenated-lowercase {
content: '';
}
}
.foo {
@extend .hyphenated-lowercase;
}
When enabled, the following are disallowed:
._with-leading-underscore {
content: '';
}
.HYPHENATED-UPPERCASE {
content: '';
}
.camelCase {
content: '';
@extend .snake_case;
}
Example 3
Settings:
- convention: camelcase
When enabled, the following are allowed:
.camelCase {
content: '';
}
.foo {
@extend .anotherCamelCase;
}
When enabled, the following are disallowed:
.HYPHENATED-UPPERCASE {
content: '';
}
.foo {
@extend .snake_case;
}
Example 4
Settings:
- convention: pascalcase
When enabled, the following are allowed:
.PascalCase {
content: '';
}
.Foo {
@extend .AnotherPascalCase;
}
When enabled, the following are disallowed:
.HYPHENATED-UPPERCASE {
content: '';
}
.foo {
@extend .snake_case;
}
Example 5
Settings:
- convention: snakecase
When enabled, the following are allowed:
.snake_case {
content: '';
}
.foo {
@extend .another_snake_case;
}
When enabled, the following are disallowed:
.HYPHENATED-UPPERCASE {
content: '';
}
.foo {
@extend .camelCase;
}
Example 6
Settings:
- convention: strictbem
When enabled, the following are allowed:
.block-name__elem-name {
content: '';
}
.owner-name_mod-name_mod-val {
content: '';
}
.block-name__elem-name_mod-bool {
content: '';
}
When enabled, the following are disallowed:
.HYPHENATED-UPPERCASE {
content: '';
}
.foo {
@extend .camelCase;
}
Example 7
Settings:
- convention: hyphenatedbem
When enabled, the following are allowed:
.site-search {
color: blue;
width: 50px;
height: 100%;
}
.site-search__field {
text-decoration: underline;
}
.site-search--full {
color: green;
}
When enabled, the following are disallowed:
.HYPHENATED-UPPERCASE {
content: '';
}
.foo {
@extend .camelCase;
}
Example 8
Settings:
- convention: ^[_A-Z]+$
- convention-explanation: 'Class must contain only uppercase letters and underscores'
When enabled, the following are allowed:
.SCREAMING_SNAKE_CASE {
content: '';
}
.foo {
@extend .SCREAMING_SNAKE_CASE;
}
When enabled, the following are disallowed:
(Each line with a class will report Class must contain only uppercase letters and underscores
when linted.)
.HYPHENATED-UPPERCASE {
content: '';
}
.snake_case {
content: '';
}
.foo {
@extend .camelCase;
}
Expected width
, found text-align
Open
text-align: center;
- Read upRead up
- Exclude checks
Property Sort Order
Rule property-sort-order
will enforce the order in which declarations are written.
Options
-
order
:'alphabetical'
,'concentric'
,'recess'
,'smacss'
, or[array of properties]
(defaults toalphabetical
. Unknown properties are sorted alphabetically) -
ignore-custom-properties
:true
/false
(defaults tofalse
)
Property orders: https://github.com/sasstools/sass-lint/tree/develop/lib/config/property-sort-orders
Examples
When enabled (assuming order: alphabetical
), the following are allowed:
.foo {
content: 'baz';
height: 100vh;
width: 100vw;
}
When enabled (assuming order: alphabetical
), the following are disallowed:
.foo {
width: 100vw;
height: 100vh;
content: 'baz';
}
Custom Sort Orders
You have the option to create your own custom property sort orders. These are specified in your .sass-lint.yml
file as below:
property-sort-order:
- 1
-
order:
- border
- display
- color
When the custom order is specified as above, the following are allowed:
.foo {
border: 1px solid blue;
display: block;
color: red;
}
When the custom order is specified as above, the following are disallowed:
.foo {
display: block;
color: red;
border: 1px solid blue;
}
Ignore Custom Properties
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be allowed
.foo {
border: 1px solid blue;
color: red;
composes: heading;
display: block;
}
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be disallowed
.foo {
composes: heading; // not in alphabetical order
border: 1px solid blue;
color: red;
display: block;
}
When ignore-custom-properties: true
(assume order: 'alphabetical'
) the following would be allowed
.foo {
composes: heading; // custom properties ignored
border: 1px solid blue;
color: red;
display: block;
}
Expected margin
, found font-size
Open
font-size: 20px;
- Read upRead up
- Exclude checks
Property Sort Order
Rule property-sort-order
will enforce the order in which declarations are written.
Options
-
order
:'alphabetical'
,'concentric'
,'recess'
,'smacss'
, or[array of properties]
(defaults toalphabetical
. Unknown properties are sorted alphabetically) -
ignore-custom-properties
:true
/false
(defaults tofalse
)
Property orders: https://github.com/sasstools/sass-lint/tree/develop/lib/config/property-sort-orders
Examples
When enabled (assuming order: alphabetical
), the following are allowed:
.foo {
content: 'baz';
height: 100vh;
width: 100vw;
}
When enabled (assuming order: alphabetical
), the following are disallowed:
.foo {
width: 100vw;
height: 100vh;
content: 'baz';
}
Custom Sort Orders
You have the option to create your own custom property sort orders. These are specified in your .sass-lint.yml
file as below:
property-sort-order:
- 1
-
order:
- border
- display
- color
When the custom order is specified as above, the following are allowed:
.foo {
border: 1px solid blue;
display: block;
color: red;
}
When the custom order is specified as above, the following are disallowed:
.foo {
display: block;
color: red;
border: 1px solid blue;
}
Ignore Custom Properties
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be allowed
.foo {
border: 1px solid blue;
color: red;
composes: heading;
display: block;
}
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be disallowed
.foo {
composes: heading; // not in alphabetical order
border: 1px solid blue;
color: red;
display: block;
}
When ignore-custom-properties: true
(assume order: 'alphabetical'
) the following would be allowed
.foo {
composes: heading; // custom properties ignored
border: 1px solid blue;
color: red;
display: block;
}
Expected background-color
, found color
Open
color: $color-flash;
- Read upRead up
- Exclude checks
Property Sort Order
Rule property-sort-order
will enforce the order in which declarations are written.
Options
-
order
:'alphabetical'
,'concentric'
,'recess'
,'smacss'
, or[array of properties]
(defaults toalphabetical
. Unknown properties are sorted alphabetically) -
ignore-custom-properties
:true
/false
(defaults tofalse
)
Property orders: https://github.com/sasstools/sass-lint/tree/develop/lib/config/property-sort-orders
Examples
When enabled (assuming order: alphabetical
), the following are allowed:
.foo {
content: 'baz';
height: 100vh;
width: 100vw;
}
When enabled (assuming order: alphabetical
), the following are disallowed:
.foo {
width: 100vw;
height: 100vh;
content: 'baz';
}
Custom Sort Orders
You have the option to create your own custom property sort orders. These are specified in your .sass-lint.yml
file as below:
property-sort-order:
- 1
-
order:
- border
- display
- color
When the custom order is specified as above, the following are allowed:
.foo {
border: 1px solid blue;
display: block;
color: red;
}
When the custom order is specified as above, the following are disallowed:
.foo {
display: block;
color: red;
border: 1px solid blue;
}
Ignore Custom Properties
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be allowed
.foo {
border: 1px solid blue;
color: red;
composes: heading;
display: block;
}
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be disallowed
.foo {
composes: heading; // not in alphabetical order
border: 1px solid blue;
color: red;
display: block;
}
When ignore-custom-properties: true
(assume order: 'alphabetical'
) the following would be allowed
.foo {
composes: heading; // custom properties ignored
border: 1px solid blue;
color: red;
display: block;
}
Expected background-color
, found border
Open
border: none;
- Read upRead up
- Exclude checks
Property Sort Order
Rule property-sort-order
will enforce the order in which declarations are written.
Options
-
order
:'alphabetical'
,'concentric'
,'recess'
,'smacss'
, or[array of properties]
(defaults toalphabetical
. Unknown properties are sorted alphabetically) -
ignore-custom-properties
:true
/false
(defaults tofalse
)
Property orders: https://github.com/sasstools/sass-lint/tree/develop/lib/config/property-sort-orders
Examples
When enabled (assuming order: alphabetical
), the following are allowed:
.foo {
content: 'baz';
height: 100vh;
width: 100vw;
}
When enabled (assuming order: alphabetical
), the following are disallowed:
.foo {
width: 100vw;
height: 100vh;
content: 'baz';
}
Custom Sort Orders
You have the option to create your own custom property sort orders. These are specified in your .sass-lint.yml
file as below:
property-sort-order:
- 1
-
order:
- border
- display
- color
When the custom order is specified as above, the following are allowed:
.foo {
border: 1px solid blue;
display: block;
color: red;
}
When the custom order is specified as above, the following are disallowed:
.foo {
display: block;
color: red;
border: 1px solid blue;
}
Ignore Custom Properties
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be allowed
.foo {
border: 1px solid blue;
color: red;
composes: heading;
display: block;
}
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be disallowed
.foo {
composes: heading; // not in alphabetical order
border: 1px solid blue;
color: red;
display: block;
}
When ignore-custom-properties: true
(assume order: 'alphabetical'
) the following would be allowed
.foo {
composes: heading; // custom properties ignored
border: 1px solid blue;
color: red;
display: block;
}
Expected font-size
, found padding
Open
padding: 5px;
- Read upRead up
- Exclude checks
Property Sort Order
Rule property-sort-order
will enforce the order in which declarations are written.
Options
-
order
:'alphabetical'
,'concentric'
,'recess'
,'smacss'
, or[array of properties]
(defaults toalphabetical
. Unknown properties are sorted alphabetically) -
ignore-custom-properties
:true
/false
(defaults tofalse
)
Property orders: https://github.com/sasstools/sass-lint/tree/develop/lib/config/property-sort-orders
Examples
When enabled (assuming order: alphabetical
), the following are allowed:
.foo {
content: 'baz';
height: 100vh;
width: 100vw;
}
When enabled (assuming order: alphabetical
), the following are disallowed:
.foo {
width: 100vw;
height: 100vh;
content: 'baz';
}
Custom Sort Orders
You have the option to create your own custom property sort orders. These are specified in your .sass-lint.yml
file as below:
property-sort-order:
- 1
-
order:
- border
- display
- color
When the custom order is specified as above, the following are allowed:
.foo {
border: 1px solid blue;
display: block;
color: red;
}
When the custom order is specified as above, the following are disallowed:
.foo {
display: block;
color: red;
border: 1px solid blue;
}
Ignore Custom Properties
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be allowed
.foo {
border: 1px solid blue;
color: red;
composes: heading;
display: block;
}
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be disallowed
.foo {
composes: heading; // not in alphabetical order
border: 1px solid blue;
color: red;
display: block;
}
When ignore-custom-properties: true
(assume order: 'alphabetical'
) the following would be allowed
.foo {
composes: heading; // custom properties ignored
border: 1px solid blue;
color: red;
display: block;
}
Expected border-radius
, found background-color
Open
background-color: $color-light-gray;
- Read upRead up
- Exclude checks
Property Sort Order
Rule property-sort-order
will enforce the order in which declarations are written.
Options
-
order
:'alphabetical'
,'concentric'
,'recess'
,'smacss'
, or[array of properties]
(defaults toalphabetical
. Unknown properties are sorted alphabetically) -
ignore-custom-properties
:true
/false
(defaults tofalse
)
Property orders: https://github.com/sasstools/sass-lint/tree/develop/lib/config/property-sort-orders
Examples
When enabled (assuming order: alphabetical
), the following are allowed:
.foo {
content: 'baz';
height: 100vh;
width: 100vw;
}
When enabled (assuming order: alphabetical
), the following are disallowed:
.foo {
width: 100vw;
height: 100vh;
content: 'baz';
}
Custom Sort Orders
You have the option to create your own custom property sort orders. These are specified in your .sass-lint.yml
file as below:
property-sort-order:
- 1
-
order:
- border
- display
- color
When the custom order is specified as above, the following are allowed:
.foo {
border: 1px solid blue;
display: block;
color: red;
}
When the custom order is specified as above, the following are disallowed:
.foo {
display: block;
color: red;
border: 1px solid blue;
}
Ignore Custom Properties
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be allowed
.foo {
border: 1px solid blue;
color: red;
composes: heading;
display: block;
}
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be disallowed
.foo {
composes: heading; // not in alphabetical order
border: 1px solid blue;
color: red;
display: block;
}
When ignore-custom-properties: true
(assume order: 'alphabetical'
) the following would be allowed
.foo {
composes: heading; // custom properties ignored
border: 1px solid blue;
color: red;
display: block;
}
Type-selector should be nested within its parent Type-selector Open
td input {
- Read upRead up
- Exclude checks
Force Element Nesting
Rule force-element-nesting
will enforce the nesting of elements
Examples
When enabled, the following are disallowed:
div p {
content: '';
}
.parent {
&__child h1 {
content: '';
}
}
a[target="_blank"] span {
content: '';
}
When enabled, the following are allowed:
div {
p {
content: '';
}
}
.parent {
&__child {
h1 {
content: '';
}
}
}
a[target="_blank"] {
span {
content: '';
}
}
Class '.border_command' should be written in lowercase with hyphens Open
.border_command {
- Read upRead up
- Exclude checks
Class Name Format
Rule class-name-format
will enforce a convention for class names.
Options
-
allow-leading-underscore
:true
/false
(defaults totrue
) -
convention
:'hyphenatedlowercase'
(default),camelcase
,snakecase
,strictbem
,hyphenatedbem
, or a Regular Expression that the class name must match (e.g.^[_A-Z]+$
) -
convention-explanation
: Custom explanation to display to the user if a class doesn't adhere to the convention -
ignore
: Array of names to ignore
Example 1
Settings:
- allow-leading-underscore: true
- convention: hyphenatedlowercase
When enabled, the following are allowed:
.hyphenated-lowercase {
content: '';
&._with-leading-underscore {
content: '';
}
}
.foo {
@extend .hyphenated-lowercase;
}
When enabled, the following are disallowed:
.HYPHENATED-UPPERCASE {
content: '';
}
.camelCase {
content: '';
@extend .snake_case;
}
Example 2
Settings:
- allow-leading-underscore: false
- convention: hyphenatedlowercase
When enabled, the following are allowed:
.hyphenated-lowercase {
content: '';
&.another-hyphenated-lowercase {
content: '';
}
}
.foo {
@extend .hyphenated-lowercase;
}
When enabled, the following are disallowed:
._with-leading-underscore {
content: '';
}
.HYPHENATED-UPPERCASE {
content: '';
}
.camelCase {
content: '';
@extend .snake_case;
}
Example 3
Settings:
- convention: camelcase
When enabled, the following are allowed:
.camelCase {
content: '';
}
.foo {
@extend .anotherCamelCase;
}
When enabled, the following are disallowed:
.HYPHENATED-UPPERCASE {
content: '';
}
.foo {
@extend .snake_case;
}
Example 4
Settings:
- convention: pascalcase
When enabled, the following are allowed:
.PascalCase {
content: '';
}
.Foo {
@extend .AnotherPascalCase;
}
When enabled, the following are disallowed:
.HYPHENATED-UPPERCASE {
content: '';
}
.foo {
@extend .snake_case;
}
Example 5
Settings:
- convention: snakecase
When enabled, the following are allowed:
.snake_case {
content: '';
}
.foo {
@extend .another_snake_case;
}
When enabled, the following are disallowed:
.HYPHENATED-UPPERCASE {
content: '';
}
.foo {
@extend .camelCase;
}
Example 6
Settings:
- convention: strictbem
When enabled, the following are allowed:
.block-name__elem-name {
content: '';
}
.owner-name_mod-name_mod-val {
content: '';
}
.block-name__elem-name_mod-bool {
content: '';
}
When enabled, the following are disallowed:
.HYPHENATED-UPPERCASE {
content: '';
}
.foo {
@extend .camelCase;
}
Example 7
Settings:
- convention: hyphenatedbem
When enabled, the following are allowed:
.site-search {
color: blue;
width: 50px;
height: 100%;
}
.site-search__field {
text-decoration: underline;
}
.site-search--full {
color: green;
}
When enabled, the following are disallowed:
.HYPHENATED-UPPERCASE {
content: '';
}
.foo {
@extend .camelCase;
}
Example 8
Settings:
- convention: ^[_A-Z]+$
- convention-explanation: 'Class must contain only uppercase letters and underscores'
When enabled, the following are allowed:
.SCREAMING_SNAKE_CASE {
content: '';
}
.foo {
@extend .SCREAMING_SNAKE_CASE;
}
When enabled, the following are disallowed:
(Each line with a class will report Class must contain only uppercase letters and underscores
when linted.)
.HYPHENATED-UPPERCASE {
content: '';
}
.snake_case {
content: '';
}
.foo {
@extend .camelCase;
}
Expected color
, found border-radius
Open
border-radius: 15px;
- Read upRead up
- Exclude checks
Property Sort Order
Rule property-sort-order
will enforce the order in which declarations are written.
Options
-
order
:'alphabetical'
,'concentric'
,'recess'
,'smacss'
, or[array of properties]
(defaults toalphabetical
. Unknown properties are sorted alphabetically) -
ignore-custom-properties
:true
/false
(defaults tofalse
)
Property orders: https://github.com/sasstools/sass-lint/tree/develop/lib/config/property-sort-orders
Examples
When enabled (assuming order: alphabetical
), the following are allowed:
.foo {
content: 'baz';
height: 100vh;
width: 100vw;
}
When enabled (assuming order: alphabetical
), the following are disallowed:
.foo {
width: 100vw;
height: 100vh;
content: 'baz';
}
Custom Sort Orders
You have the option to create your own custom property sort orders. These are specified in your .sass-lint.yml
file as below:
property-sort-order:
- 1
-
order:
- border
- display
- color
When the custom order is specified as above, the following are allowed:
.foo {
border: 1px solid blue;
display: block;
color: red;
}
When the custom order is specified as above, the following are disallowed:
.foo {
display: block;
color: red;
border: 1px solid blue;
}
Ignore Custom Properties
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be allowed
.foo {
border: 1px solid blue;
color: red;
composes: heading;
display: block;
}
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be disallowed
.foo {
composes: heading; // not in alphabetical order
border: 1px solid blue;
color: red;
display: block;
}
When ignore-custom-properties: true
(assume order: 'alphabetical'
) the following would be allowed
.foo {
composes: heading; // custom properties ignored
border: 1px solid blue;
color: red;
display: block;
}
Expected width
, found margin
Open
margin: 0 auto;
- Read upRead up
- Exclude checks
Property Sort Order
Rule property-sort-order
will enforce the order in which declarations are written.
Options
-
order
:'alphabetical'
,'concentric'
,'recess'
,'smacss'
, or[array of properties]
(defaults toalphabetical
. Unknown properties are sorted alphabetically) -
ignore-custom-properties
:true
/false
(defaults tofalse
)
Property orders: https://github.com/sasstools/sass-lint/tree/develop/lib/config/property-sort-orders
Examples
When enabled (assuming order: alphabetical
), the following are allowed:
.foo {
content: 'baz';
height: 100vh;
width: 100vw;
}
When enabled (assuming order: alphabetical
), the following are disallowed:
.foo {
width: 100vw;
height: 100vh;
content: 'baz';
}
Custom Sort Orders
You have the option to create your own custom property sort orders. These are specified in your .sass-lint.yml
file as below:
property-sort-order:
- 1
-
order:
- border
- display
- color
When the custom order is specified as above, the following are allowed:
.foo {
border: 1px solid blue;
display: block;
color: red;
}
When the custom order is specified as above, the following are disallowed:
.foo {
display: block;
color: red;
border: 1px solid blue;
}
Ignore Custom Properties
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be allowed
.foo {
border: 1px solid blue;
color: red;
composes: heading;
display: block;
}
When ignore-custom-properties: false
(assume order: 'alphabetical'
) the following would be disallowed
.foo {
composes: heading; // not in alphabetical order
border: 1px solid blue;
color: red;
display: block;
}
When ignore-custom-properties: true
(assume order: 'alphabetical'
) the following would be allowed
.foo {
composes: heading; // custom properties ignored
border: 1px solid blue;
color: red;
display: block;
}
Properties should be ordered -webkit-appearance, background-color, border, color, text-align, width Open
border: none;
- Exclude checks
Selector flash_success
should be written in lowercase with hyphens Open
.flash_success {
- Exclude checks
Properties should be ordered background-color, border-radius, color, font-size, font-weight, margin, padding, width Open
color: $color-flash;
- Exclude checks
border: 0
is preferred over border: none
Open
border: none;
- Exclude checks
Selector border_command
should be written in lowercase with hyphens Open
.border_command {
- Exclude checks
!important should not be used Open
text-decoration: none !important;
- Exclude checks