New sass module

* Changed sass module to dart-sass
* Fixed missing sass compiler for gulp-sass

gulpfile.js

@@ -20,7 +20,7 @@ const nunjucksRender = require('gulp-nunjucks-render');
 // const nunjucks = require('gulp-nunjucks');
 const data = require('gulp-data');
 const jsonConcat = require('gulp-json-concat');
-const sass = require('gulp-sass');
+const sass = require('gulp-sass')(require('sass'));
 const autoprefixer = require('gulp-autoprefixer');
 const sassLint = require('gulp-sass-lint');
 const rename = require('gulp-rename');
@@ -132,7 +132,7 @@ function nunjucks() {
 function style() {
   return src(input.style)
     .pipe(plumber())
-    .pipe(sass({
+    .pipe(sass.sync({
       includePaths: [input.vendor + '/**/*.s+(a|c)ss']
     }).on('error', sass.logError))
     .pipe(autoprefixer(['>= 4%', 'last 2 version']))

package.json

@@ -48,7 +48,7 @@
     "jshint": "~2",
     "jshint-stylish": "^2.2.1",
     "merge-stream": "^2.0.0",
-    "node-sass": "~7",
-    "pump": "^3.0.0"
+    "pump": "^3.0.0",
+    "sass": "^1.49.7"
   }
 }