selector-combinator-space-before

Require a single space or disallow whitespace before the combinators of selectors.

  a > b + c ~ d e { color: pink; }
/** ↑   ↑   ↑  ↑
 * These are combinators */

Combinators are used to combine several different selectors into new and more specific ones. There are several types of combinators, including: child (>), adjacent sibling (+), general sibling (~), and descendant (which is represented by a blank space between two selectors).

The descendant combinator is not checked by this rule.

Also, + and - signs within :nth-*() arguments are not checked (e.g. a:nth-child(2n+1)).

Options

string: "always"|"never"

`"always"`

There must always be a single space before the combinators.

The following patterns are considered warnings:

a+ b { color: pink; }

a>b { color: pink; }

The following patterns are not considered warnings:

a + b { color: pink; }

a >b { color: pink; }

`"never"`

There must never be whitespace before the combinators.

The following patterns are considered warnings:

a + b { color: pink; }

a >b { color: pink; }

The following patterns are not considered warnings:

a+ b { color: pink; }

a>b { color: pink; }