1<===> input.scss
2$map: (
3  alpha: 1,
4  beta: 2,
5  gamma: 3,
6  delta: (
7    eta: 5,
8    eta: 6,
9  ),
10);
11<===> error
12Error: Duplicate key "eta" in map (eta: 5, eta: 6).
13
14<===> error-dart-sass
15Error: Duplicate key.
16  ,
176 |     eta: 5,
18  |     === first key
197 |     eta: 6,
20  |     ^^^ second key
21  '
22  input.scss 7:5  root stylesheet
23