var -> const/let

Author: flarnie

src/shared/utils/__tests__/testMinificationUsedDCE-test.js

@@ -10,9 +10,9 @@
  */
 'use strict';
 
-var babel = require('babel-core');
-var UglifyJs = require('uglify-js');
-var testMinificationUsedDCE;
+const babel = require('babel-core');
+const UglifyJs = require('uglify-js');
+let testMinificationUsedDCE;
 
 describe('in the production environment', () => {
   let oldProcess;
@@ -49,12 +49,12 @@ describe('in the production environment', () => {
     describe('when envified first, then minification with *no* DCE', () => {
       it('should throw', () => {
         // envify: change `process.env.NODE_ENV` to `"production"`
-        var rawCode = testMinificationUsedDCE
+        const rawCode = testMinificationUsedDCE
           .toString()
           .replace(/process\.env\.NODE_ENV/, '"production"');
-        var code = {'file.js': rawCode};
-        var options = {fromString: true, parse: {dead_code: false}};
-        var result = UglifyJs.minify(code, options);
+        const code = {'file.js': rawCode};
+        const options = {fromString: true, parse: {dead_code: false}};
+        const result = UglifyJs.minify(code, options);
         const minifiedWithNoDCE = () => eval('(' + result.code + ')()');
         expect(() => {
           minifiedWithNoDCE();
@@ -69,12 +69,12 @@ describe('in the production environment', () => {
     describe('when envified first, then minified and *yes* successful DCE', () => {
       it('should not throw', () => {
         // envify: change `process.env.NODE_ENV` to `"production"`
-        var rawCode = testMinificationUsedDCE
+        const rawCode = testMinificationUsedDCE
           .toString()
           .replace(/process\.env\.NODE_ENV/g, '"production"');
-        var code = {'file.js': rawCode};
-        var options = {fromString: true, parse: {dead_code: true}};
-        var result = UglifyJs.minify(code, options);
+        const code = {'file.js': rawCode};
+        const options = {fromString: true, parse: {dead_code: true}};
+        const result = UglifyJs.minify(code, options);
         const minifiedWithNoDCE = () => eval('(' + result.code + ')()');
         expect(() => {
           minifiedWithNoDCE();
@@ -85,11 +85,11 @@ describe('in the production environment', () => {
 
     describe('when minified first with *unsuccessful* DCE, then envified', () => {
       it('should throw', () => {
-        var code = {'file.js': testMinificationUsedDCE.toString()};
-        var options = {fromString: true, parse: {dead_code: true}};
-        var result = UglifyJs.minify(code, options);
+        const code = {'file.js': testMinificationUsedDCE.toString()};
+        const options = {fromString: true, parse: {dead_code: true}};
+        const result = UglifyJs.minify(code, options);
         // late envify: change `process.env.NODE_ENV` to `"production"`
-        var resultCode = result.code.replace(
+        const resultCode = result.code.replace(
           /process\.env\.NODE_ENV/g,
           '"production"',
         );