notes/node_modules/stylelint/lib/rules/declaration-block-no-redundant-longhand-properties

declaration-block-no-redundant-longhand-properties

Disallow longhand properties that can be combined into one shorthand property.

  a {
    padding-top: 1px;
    padding-right: 2px;
    padding-bottom: 3px;
    padding-left: 4px; }
/** ↑
 *  These longhand properties */

The longhand properties in the example above can be more concisely written as:

a {
  padding: 1px 2px 3px 4px;
}

This rule will only warn if you've used the longhand equivalent of all the properties that the shorthand will set.

This rule warns when the following shorthand properties can be used:

• padding
• margin
• background
• font
• border
• border-top
• border-bottom
• border-left
• border-right
• border-width
• border-style
• border-color
• border-radius
• transition

Options

true

The following patterns are considered warnings:

a {
  margin-top: 1px;
  margin-right: 2px;
  margin-bottom: 3px;
  margin-left: 4px;
}

a {
  font-style: italic;
  font-variant: normal;
  font-weight: bold;
  font-stretch: normal;
  font-size: 14px;
  line-height: 1.2;
  font-family: serif;
}

a {
  -webkit-transition-property: top;
  -webkit-transition-duration: 2s;  
  -webkit-transition-timing-function: ease;
  -webkit-transition-delay: 0.5s;
}

The following patterns are not considered warnings:

a {
  margin: 1px 2px 3px 4px;
}

a {
  font: italic normal bold normal 14px/1.2 serif;
}

a {
  -webkit-transition: top 2s ease 0.5s;
}

a {
  margin-top: 1px;
  margin-right: 2px;
}

a {
  margin-top: 1px;
  margin-right: 2px;
  margin-bottom: 3px;
}

Optional secondary options

ignoreShorthands: ["/regex/", "string"]

Given:

["padding", "/border/"]

The following patterns are not considered warnings:

a {
  padding-top: 20px;
  padding-right: 10px;
  padding-bottom: 30px;
  padding-left: 10px;
}

a {
  border-top-width: 1px;
  border-bottom-width: 1px;
  border-left-width: 1px;
  border-right-width: 1px;
}

a {
  border-top-width: 1px;
  border-bottom-width: 1px;
  border-left-width: 1px;
  border-right-width: 1px;
}

a {
  border-top-color: green;
  border-top-style: double;
  border-top-width: 7px;
}