refactor: drop webpack@4

Author: cap-Bernardito

package-lock.json

@@ -64,7 +64,7 @@
     "del-cli": "^3.0.1",
     "es-check": "^5.1.2",
     "eslint": "^7.13.0",
-    "eslint-config-prettier": "^6.15.0",
+    "eslint-config-prettier": "^7.1.0",
     "eslint-plugin-import": "^2.22.1",
     "file-loader": "^6.2.0",
     "husky": "^4.3.0",

package.json

@@ -1,5 +1,3 @@
 const webpack = require('webpack');
 
-module.exports = () => {
-  return webpack.version[0] !== '4';
-};
+module.exports = () => webpack.version[0] !== '4';

test/cases/asset-modules/test.filter.js

@@ -1,5 +1,3 @@
 const webpack = require('webpack');
 
-module.exports = () => {
-  return webpack.version[0] !== '4';
-};
+module.exports = () => webpack.version[0] !== '4';

test/cases/dependOn-multiple-files-per-entry/test.filter.js

@@ -1,5 +1,3 @@
 const webpack = require('webpack');
 
-module.exports = () => {
-  return webpack.version[0] !== '4';
-};
+module.exports = () => webpack.version[0] !== '4';

test/cases/dependOn/test.filter.js

@@ -1,5 +1,5 @@
-export default (compiler) => {
-  return new Promise((resolve, reject) => {
+export default (compiler) =>
+  new Promise((resolve, reject) => {
     compiler.run((error, stats) => {
       if (error) {
         return reject(error);
@@ -8,4 +8,3 @@ export default (compiler) => {
       return resolve(stats);
     });
   });
-};

test/helpers/compile.js

@@ -1,5 +1,3 @@
 import normalizeErrors from './normalizeErrors';
 
-export default (stats) => {
-  return normalizeErrors(stats.compilation.errors);
-};
+export default (stats) => normalizeErrors(stats.compilation.errors);

test/helpers/getErrors.js

@@ -1,5 +1,3 @@
 import normalizeErrors from './normalizeErrors';
 
-export default (stats) => {
-  return normalizeErrors(stats.compilation.warnings);
-};
+export default (stats) => normalizeErrors(stats.compilation.warnings);

test/helpers/getWarnings.js

@@ -12,8 +12,7 @@ function removeCWD(str) {
   return str.replace(new RegExp(cwd, 'g'), '');
 }
 
-export default (errors) => {
-  return errors.map((error) =>
+export default (errors) =>
+  errors.map((error) =>
     removeCWD(error.toString().split('\n').slice(0, 2).join('\n'))
   );
-};