Which directive is used to detect the errors in SASS ?

In order to detect the errors in SASS, one should use @debug Directive. It displays the SassScript expression values. It can be used when anyone wants to see the value of a variable or expression while developing the file.

Let’s see an example so that we get to know more information about the @debug directive in a practical way. Just follow these steps to know the implementation: 

• First create a SASS file, for this example, I have named it debug.scss.
• Now define some variables with their value.
  CSS

  $style: (
      color: #00FF00
  );
  $font-sizes: 15px+5px;
  
  .container {
    @debug $style;
    @debug $font-sizes;
   }
• The following command will start watching for changes in the SASS file and automatically generate the respective CSS file.

  sass --watch debug.scss:debug.css

• Output will show the code which you have debugged using the @debug directive:

  

Example: Let’s see another example to get a clear idea about it. Follow the same steps as above.

CSS

$width: 350px;
$colors: (
    IndianRed: #CD5C5C,
    Salmon: #FA8072,
    LightCoral: #F08080
);
$font-sizes: heading, p, sm;

.container{
  @debug $width; /* single value */
  @debug $colors; /* map */
  @debug $font-sizes; /* list */
}

Output: