block-opening-brace-space-before

Require a single space or disallow whitespace before the opening brace of blocks.

  a { color: pink; }
/** ↑
 * The space before this brace */

The fix option can automatically fix all of the problems reported by this rule.

Options

string: "always"|"never"|"always-single-line"|"never-single-line"|"always-multi-line"|"never-multi-line"

"always"

There must always be a single space before the opening brace.

The following patterns are considered problems:

a{ color: pink; }

a
{ color: pink; }

The following patterns are not considered problems:

a { color: pink; }

a {
color: pink; }

"never"

There must never be whitespace before the opening brace.

The following patterns are considered problems:

a { color: pink; }

a
{ color: pink; }

The following patterns are not considered problems:

a{ color: pink; }

a{
color: pink; }

"always-single-line"

There must always be a single space before the opening brace in single-line blocks.

The following patterns are considered problems:

a{ color: pink; }

The following patterns are not considered problems:

a { color: pink; }

a{
color: pink; }

"never-single-line"

There must never be whitespace before the opening brace in single-line blocks.

The following patterns are considered problems:

a { color: pink; }

The following patterns are not considered problems:

a{ color: pink; }

a {
color: pink; }

"always-multi-line"

There must always be a single space before the opening brace in multi-line blocks.

The following patterns are considered problems:

a{
color: pink; }

The following patterns are not considered problems:

a{ color: pink; }

a {
color: pink; }

"never-multi-line"

There must never be whitespace before the opening brace in multi-line blocks.

The following patterns are considered problems:

a {
color: pink; }

The following patterns are not considered problems:

a { color: pink; }

a{
color: pink;}

Optional secondary options

ignoreAtRules: ["/regex/", /regex/, "non-regex"]

Given:

["/fo/"]

The following patterns are not considered problems:

@for ...
{}

@for ...{}

ignoreSelectors: ["/regex/", /regex/, "non-regex"]

Given:

[":root"]

The following patterns are not considered problems:

:root
{}

:root{}