install gulp

user/themes/anissabensalah/node_modules/@gulp-sourcemaps/map-sources/index.js

@@ -0,0 +1,30 @@
+'use strict';
+
+var through = require('through2');
+var normalize = require('normalize-path');
+
+function mapSources(mapFn) {
+
+  function transform(file, _, cb) {
+    if (!file.sourceMap || !file.sourceMap.sources) {
+      return cb(null, file);
+    }
+
+    function mapper(sourcePath) {
+      var result = sourcePath;
+      if (typeof mapFn === 'function') {
+        result = mapFn(sourcePath, file);
+      }
+
+      return normalize(result);
+    }
+
+    file.sourceMap.sources = file.sourceMap.sources.map(mapper);
+
+    cb(null, file);
+  }
+
+  return through.obj(transform);
+}
+
+module.exports = mapSources;