sass: Sass/SCSS does not enable/recognize the use of CSS Grid Layout's named lines & template area syntax

With the current versions of Sass/SCSS, users cannot reliably be able to use CSS Grid Layout Module Level 1’s named line syntax or its template.

It seems a moderate issue since the Grid Layout Module has had the latter a very mature & stable feature with its availability in modern browsers such as Edge (the others are removing Grid Layout module from their flag real soon) for some time (+2 years) & the former has also been a stable feature in the spec for years now but merely had named lines surrounded by square brackets (see example below) about ~6-8 months ago.

With the module mature enough to consider for serious prototyping with it & legitimate anticipation for its availability this year in Safari 7 & upcoming versions of Firefox & Chrome this year outside of flags, it seems worthwhile to make this officially an issue.

Example 1: Named line syntax not being able to work w/ Sass/SCSS

The following code utilizing CSS Grid named lines capabilities will error out by Sass

.wrapper 
  display: grid
  grid-template-columns: [col1-start] 9fr [col1-end] 10px [col2-start] 3fr [col2-end] // This will cause Sass to throw errors 
  grid-template-rows: auto

Example 2: grid-template-areas not being able to work w/ Sass/SCSS

.wrapper 
  display: grid
  width: 90%
  margin: 0 auto
  grid-template-columns: 9fr 1.875em 3fr
  grid-template-rows: auto
  grid-template-areas:   
    "header header header"
    "content . sidebar"
    "footer footer footer"
    // ^ The following will throw