fix(minify): nameCache assignment (uglifyOptions.nameCache)

src/uglify/minify.js

@@ -1,34 +1,52 @@
+/* eslint-disable
+  arrow-body-style
+*/
 import uglify from 'uglify-es';
 
-const buildDefaultUglifyOptions = ({ ecma, warnings, parse = {}, compress = {}, mangle, output, toplevel, ie8 }) => {
-  return {
-    ecma,
-    warnings,
-    parse,
-    compress,
-    mangle: mangle == null ? true : mangle,
-    // Ignoring sourcemap from options
-    sourceMap: null,
-    output: {
-      comments: /^\**!|@preserve|@license|@cc_on/,
-      beautify: false,
-      semicolons: true,
-      shebang: true,
-      ...output,
-    },
-    toplevel,
-    ie8,
-  };
-};
+const buildUglifyOptions = ({
+  ie8,
+  ecma,
+  parse = {},
+  mangle,
+  output,
+  compress = {},
+  warnings,
+  toplevel,
+  nameCache,
+} = {}) => ({
+  ie8,
+  ecma,
+  parse,
+  mangle: mangle == null ? true : mangle,
+  output: {
+    shebang: true,
+    comments: /^\**!|@preserve|@license|@cc_on/,
+    beautify: false,
+    semicolons: true,
+    ...output,
+  },
+  compress,
+  warnings,
+  toplevel,
+  nameCache,
+  // Ignoring sourcemap from options
+  sourceMap: null,
+});
 
 const buildComments = (options, uglifyOptions, extractedComments) => {
   const condition = {};
   const commentsOpts = uglifyOptions.output.comments;
-  if (typeof options.extractComments === 'string' || options.extractComments instanceof RegExp) {
+
+  if (
+    typeof options.extractComments === 'string' ||
+    options.extractComments instanceof RegExp
+  ) {
     // extractComments specifies the extract condition and commentsOpts specifies the preserve condition
     condition.preserve = commentsOpts;
     condition.extract = options.extractComments;
-  } else if (Object.prototype.hasOwnProperty.call(options.extractComments, 'condition')) {
+  } else if (
+    Object.prototype.hasOwnProperty.call(options.extractComments, 'condition')
+  ) {
     // Extract condition is given in extractComments.condition
     condition.preserve = commentsOpts;
     condition.extract = options.extractComments.condition;
@@ -42,26 +60,39 @@ const buildComments = (options, uglifyOptions, extractedComments) => {
   ['preserve', 'extract'].forEach((key) => {
     let regexStr;
     let regex;
+
     switch (typeof (condition[key])) {
       case 'boolean':
         condition[key] = condition[key] ? () => true : () => false;
+
         break;
       case 'function':
         break;
       case 'string':
         if (condition[key] === 'all') {
           condition[key] = () => true;
+
           break;
         }
+
         if (condition[key] === 'some') {
-          condition[key] = (astNode, comment) => comment.type === 'comment2' && /@preserve|@license|@cc_on/i.test(comment.value);
+          condition[key] = (astNode, comment) => {
+            return comment.type === 'comment2' && /@preserve|@license|@cc_on/i.test(comment.value);
+          };
+
           break;
         }
+
         regexStr = condition[key];
-        condition[key] = (astNode, comment) => new RegExp(regexStr).test(comment.value);
+
+        condition[key] = (astNode, comment) => {
+          return new RegExp(regexStr).test(comment.value);
+        };
+
         break;
       default:
         regex = condition[key];
+
         condition[key] = (astNode, comment) => (regex.test(comment.value));
     }
   });
@@ -74,14 +105,15 @@ const buildComments = (options, uglifyOptions, extractedComments) => {
         comment.type === 'comment2' ? `/*${comment.value}*/` : `//${comment.value}`,
       );
     }
+
     return condition.preserve(astNode, comment);
   };
 };
 
 const minify = (options) => {
   const { file, input, inputSourceMap, extractComments } = options;
   // Copy uglify options
-  const uglifyOptions = buildDefaultUglifyOptions(options.uglifyOptions || {});
+  const uglifyOptions = buildUglifyOptions(options.uglifyOptions);
 
   // Add source map data
   if (inputSourceMap) {
@@ -91,11 +123,20 @@ const minify = (options) => {
   }
 
   const extractedComments = [];
+
   if (extractComments) {
-    uglifyOptions.output.comments = buildComments(options, uglifyOptions, extractedComments);
+    uglifyOptions.output.comments = buildComments(
+      options,
+      uglifyOptions,
+      extractedComments,
+    );
   }
 
-  const { error, map, code, warnings } = uglify.minify({ [file]: input }, uglifyOptions);
+  const { error, map, code, warnings } = uglify.minify(
+    { [file]: input },
+    uglifyOptions,
+  );
+
   return { error, map, code, warnings, extractedComments };
 };