think my regex fu is ok

Author: geelen

src/wip.js

@@ -1,10 +1,21 @@
 const matchImports = /^(.+?)\s+from\s+(?:"([^"]+)"|'([^']+)')$/
+const matchLet = /(?:,\s+|^)([\w-]+):?\s+("[^"]*"|'[^']*'|[^,]+)\s?/g
 
 export default css => {
-  css.eachAtRule('alias', atRule => {
+  let declarations = {}
+  css.eachAtRule(/^-?let$/, atRule => {
+    console.log(atRule.params)
+
+    let matches
+    while (matches = matchLet.exec(atRule.params)) {
+      let [/*match*/, key, value] = matches
+      declarations[key] = value
+    }
+  })
+  css.eachAtRule(/^-?import$/, atRule => {
     let imports = matchImports.exec(atRule.params)
     if (imports) {
-
+      //console.log(imports)
     } else {
       console.log(atRule.params)
     }

test/test-cases/aliases/source.css

@@ -1,5 +1,5 @@
-@let borders: "./borders.css";
-@import small from "./breakpoints.css";
+@let borders: "./borders.css", breakpoints: "./breakpoints";
+@import small from breakpoints;
 @import secondary, blue as primary from "./colors.css";
 
 .foo {