feat: mag-get

Author: Scrum

src/index.js

@@ -0,0 +1,36 @@
+import postcss from 'postcss';
+
+const METHOD = 'map-get';
+
+const valResolve = value => {
+  const map = value.substring(
+      value.indexOf('((') + 2,
+      value.indexOf('),')
+    )
+    .split(',')
+    .reduce((map, string) => {
+      const [key, value] = string.split(':');
+      return Object.assign(map, {[key]: value})
+    }, {});
+
+  const key = value.substring(
+    value.indexOf('),') + 2,
+    value.lastIndexOf(')')
+  );
+
+  return map[key];
+}
+
+const normalize = value => value.replace(/(\s|!default)/g, '');
+
+export default postcss.plugin('postcss-map-get', () => {
+    return nodes => {
+        nodes.walkDecls(decl => {
+          let {value} = decl;
+
+          if (value.startsWith(METHOD)) {
+            decl.value = valResolve(normalize(decl.value));
+          }
+        });
+    };
+});