refactor: code

Author: cap-Bernardito

src/index.js

@@ -344,13 +344,11 @@ class CssMinimizerPlugin {
       );
     }
 
-    const result = await Promise.all(scheduledTasks);
+    await Promise.all(scheduledTasks);
 
     if (initializedWorker) {
       await initializedWorker.end();
     }
-
-    return result;
   }
 
   apply(compiler) {
@@ -365,8 +363,8 @@ class CssMinimizerPlugin {
       );
 
       const data = serialize({
-        terser: cssNanoPackageJson.version,
-        terserOptions: this.options.terserOptions,
+        cssNano: cssNanoPackageJson.version,
+        cssNanoOptions: this.options.minimizerOptions,
       });
 
       hooks.chunkHash.tap(pluginName, (chunk, hash) => {

test/__snapshots__/CssMinimizerPlugin.test.js.snap

@@ -70,7 +70,7 @@ exports[`CssMinimizerPlugin should throw error from postcss: warning 1`] = `Arra
 
 exports[`CssMinimizerPlugin should work and generate real content hash: assets 1`] = `
 Object {
-  "entry.19e4764f9c1d9fe130e2.d83c1458800a0db8915f.0ffa7254aa159dde7994.css": "body{color:red}a{color:#00f}",
+  "entry.19e4764f9c1d9fe130e2.3dfffe1d97062bbef93c.df22749557b2a56485d0.css": "body{color:red}a{color:#00f}",
 }
 `;