diff --git a/package-lock.json b/package-lock.json
index 055599e3..8eb1dbd7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -557,6 +557,11 @@
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+            "run-async": "^2.2.0",
+            "rx": "^4.1.0",
+            "string-width": "^1.0.1",
+            "strip-ansi": "^3.0.0",
+            "through": "^2.3.6"
+          }
+        },
+        "is-fullwidth-code-point": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
+          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
+          "requires": {
+            "number-is-nan": "^1.0.0"
+          }
+        },
+        "mute-stream": {
+          "version": "0.0.6",
+          "resolved": "https://registry.npmjs.org/mute-stream/-/mute-stream-0.0.6.tgz",
+          "integrity": "sha1-SJYrGeFp/R38JAs/HnMXYnu8R9s="
+        },
+        "onetime": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
+          "integrity": "sha1-ofeDj4MUxRbwXs78vEzP4EtO14k="
+        },
+        "restore-cursor": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/restore-cursor/-/restore-cursor-1.0.1.tgz",
+          "integrity": "sha1-NGYfRohjJ/7SmRR5FSJS35LapUE=",
+          "requires": {
+            "exit-hook": "^1.0.0",
+            "onetime": "^1.0.0"
+          }
+        },
+        "string-width": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+          "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+          "requires": {
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
+          }
+        },
+        "supports-color": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
+          "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc="
+        },
+        "tmp": {
+          "version": "0.0.29",
+          "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.29.tgz",
+          "integrity": "sha1-8lEl/w3Z2jzLDC3Tce4SiLuRKMA=",
+          "requires": {
+            "os-tmpdir": "~1.0.1"
+          }
+        }
+      }
+    },
     "tapable": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/tapable/-/tapable-1.1.1.tgz",
@@ -14202,8 +14439,7 @@
     "through": {
       "version": "2.3.8",
       "resolved": "http://registry.npmjs.org/through/-/through-2.3.8.tgz",
-      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
-      "dev": true
+      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU="
     },
     "through2": {
       "version": "2.0.5",
@@ -14391,8 +14627,7 @@
     "typedarray": {
       "version": "0.0.6",
       "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
-      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
-      "dev": true
+      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
     },
     "uglify-js": {
       "version": "3.4.9",
@@ -14678,8 +14913,7 @@
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
-      "dev": true
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
     },
     "util.promisify": {
       "version": "1.0.0",
@@ -16630,6 +16864,31 @@
         "string-width": "^2.1.1"
       }
     },
+    "winston": {
+      "version": "2.4.4",
+      "resolved": "https://registry.npmjs.org/winston/-/winston-2.4.4.tgz",
+      "integrity": "sha512-NBo2Pepn4hK4V01UfcWcDlmiVTs7VTB1h7bgnB0rgP146bYhMxX0ypCz3lBOfNxCO4Zuek7yeT+y/zM1OfMw4Q==",
+      "requires": {
+        "async": "~1.0.0",
+        "colors": "1.0.x",
+        "cycle": "1.0.x",
+        "eyes": "0.1.x",
+        "isstream": "0.1.x",
+        "stack-trace": "0.0.x"
+      },
+      "dependencies": {
+        "async": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.0.0.tgz",
+          "integrity": "sha1-+PwEyjoTeErenhZBr5hXjPvWR6k="
+        },
+        "colors": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/colors/-/colors-1.0.3.tgz",
+          "integrity": "sha1-BDP0TYCWgP3rYO0mDxsMJi6CpAs="
+        }
+      }
+    },
     "wordwrap": {
       "version": "0.0.3",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
@@ -16680,8 +16939,7 @@
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "write": {
       "version": "0.2.1",
diff --git a/package.json b/package.json
index ceecab67..fcfcbd17 100644
--- a/package.json
+++ b/package.json
@@ -43,9 +43,10 @@
     "webpack": "^4.4.0"
   },
   "dependencies": {
-    "schema-utils": "^1.0.0",
-    "normalize-url": "^3.0.0",
+    "es-check": "^5.0.0",
     "loader-utils": "^1.1.0",
+    "normalize-url": "^3.0.0",
+    "schema-utils": "^1.0.0",
     "webpack-sources": "^1.1.0"
   },
   "devDependencies": {
diff --git a/src/hmr/hotModuleReplacement.js b/src/hmr/hotModuleReplacement.js
index 934742bc..0a040761 100644
--- a/src/hmr/hotModuleReplacement.js
+++ b/src/hmr/hotModuleReplacement.js
@@ -5,6 +5,7 @@
 /* eslint prefer-arrow-func: 0 */
 /* eslint prefer-rest-params: 0 */
 /* eslint prefer-arrow-callback: 0 */
+/* eslint prefer-template: 0 */
 
 var normalizeUrl = require('normalize-url');
 
@@ -64,9 +65,9 @@ function getCurrentScriptUrl(moduleId) {
       return [src.replace('.js', '.css')];
     }
     return fileMap.split(',').map(function(mapRule) {
-      var reg = new RegExp(`${filename}\\.js$`, 'g');
+      var reg = new RegExp(filename + '\\.js$', 'g');
       return normalizeUrl(
-        src.replace(reg, `${mapRule.replace(/{fileName}/g, filename)}.css`),
+        src.replace(reg, mapRule.replace(/{fileName}/g, filename) + '.css'),
         { stripWWW: false }
       );
     });
@@ -99,7 +100,7 @@ function updateCss(el, url) {
     el.parentNode.removeChild(el);
   });
 
-  newEl.href = `${url}?${Date.now()}`;
+  newEl.href = url + '?' + Date.now();
   el.parentNode.appendChild(newEl);
 }
 
diff --git a/test/TestCases.test.js b/test/TestCases.test.js
index ee4cd52c..67f950d4 100644
--- a/test/TestCases.test.js
+++ b/test/TestCases.test.js
@@ -1,5 +1,6 @@
 import fs from 'fs';
 import path from 'path';
+import { exec } from 'child_process';
 
 import webpack from 'webpack';
 
@@ -77,3 +78,24 @@ describe('TestCases', () => {
     }
   }
 });
+
+describe('HMR', () => {
+  it('matches snapshot', () => {
+    const hmr = fs
+      .readFileSync(path.join(__dirname, '../src/hmr/hotModuleReplacement.js'))
+      .toString();
+
+    expect(hmr).toMatchSnapshot();
+  });
+
+  it('is es5 only', () => {
+    exec(
+      './node_modules/.bin/es-check es5 src/hmr/hotModuleReplacement.js',
+      (error, stdout, stderr) => {
+        expect(
+          stderr.indexOf('there were no ES version matching errors!') > -1
+        ).toBe(true);
+      }
+    );
+  });
+});
diff --git a/test/__snapshots__/TestCases.test.js.snap b/test/__snapshots__/TestCases.test.js.snap
new file mode 100644
index 00000000..8b2343e1
--- /dev/null
+++ b/test/__snapshots__/TestCases.test.js.snap
@@ -0,0 +1,170 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`HMR matches snapshot 1`] = `
+"/* global document, window */
+/* eslint func-names: 0 */
+/* eslint no-var: 0 */
+/* eslint vars-on-top: 0 */
+/* eslint prefer-arrow-func: 0 */
+/* eslint prefer-rest-params: 0 */
+/* eslint prefer-arrow-callback: 0 */
+/* eslint prefer-template: 0 */
+
+var normalizeUrl = require('normalize-url');
+
+var srcByModuleId = Object.create(null);
+
+var noDocument = typeof document === 'undefined';
+
+var forEach = Array.prototype.forEach;
+
+function debounce(fn, time) {
+  var timeout = 0;
+
+  // eslint-disable-next-line func-names
+  return function() {
+    var self = this;
+    var args = arguments;
+
+    // eslint-disable-next-line prefer-rest-params
+    var functionCall = function functionCall() {
+      return fn.apply(self, args);
+    };
+
+    clearTimeout(timeout);
+    timeout = setTimeout(functionCall, time);
+  };
+}
+
+function noop() {}
+
+function getCurrentScriptUrl(moduleId) {
+  var src = srcByModuleId[moduleId];
+
+  if (!src) {
+    if (document.currentScript) {
+      src = document.currentScript.src;
+    } else {
+      var scripts = document.getElementsByTagName('script');
+      var lastScriptTag = scripts[scripts.length - 1];
+
+      if (lastScriptTag) {
+        src = lastScriptTag.src;
+      }
+    }
+    srcByModuleId[moduleId] = src;
+  }
+
+  return function(fileMap) {
+    if (!src) {
+      return null;
+    }
+    var splitResult = src.split(/([^\\\\\\\\/]+)\\\\.js$/);
+    var filename = splitResult && splitResult[1];
+    if (!filename) {
+      return [src.replace('.js', '.css')];
+    }
+    if (!fileMap) {
+      return [src.replace('.js', '.css')];
+    }
+    return fileMap.split(',').map(function(mapRule) {
+      var reg = new RegExp(filename + '\\\\\\\\.js$', 'g');
+      return normalizeUrl(
+        src.replace(reg, mapRule.replace(/{fileName}/g, filename) + '.css'),
+        { stripWWW: false }
+      );
+    });
+  };
+}
+
+function updateCss(el, url) {
+  if (!url) {
+    url = el.href.split('?')[0];
+  }
+  if (el.isLoaded === false) {
+    // We seem to be about to replace a css link that hasn't loaded yet.
+    // We're probably changing the same file more than once.
+    return;
+  }
+  if (!url || !(url.indexOf('.css') > -1)) return;
+
+  el.visited = true;
+  var newEl = el.cloneNode(); // eslint-disable-line vars-on-top
+
+  newEl.isLoaded = false;
+
+  newEl.addEventListener('load', function() {
+    newEl.isLoaded = true;
+    el.parentNode.removeChild(el);
+  });
+
+  newEl.addEventListener('error', function() {
+    newEl.isLoaded = true;
+    el.parentNode.removeChild(el);
+  });
+
+  newEl.href = url + '?' + Date.now();
+  el.parentNode.appendChild(newEl);
+}
+
+function getReloadUrl(href, src) {
+  var ret;
+  href = normalizeUrl(href, { stripWWW: false });
+  // eslint-disable-next-line array-callback-return
+  src.some(function(url) {
+    if (href.indexOf(src) > -1) {
+      ret = url;
+    }
+  });
+  return ret;
+}
+
+function reloadStyle(src) {
+  var elements = document.querySelectorAll('link');
+  var loaded = false;
+
+  forEach.call(elements, function(el) {
+    var url = getReloadUrl(el.href, src);
+
+    if (el.visited === true) return;
+
+    if (url) {
+      updateCss(el, url);
+      loaded = true;
+    }
+  });
+
+  return loaded;
+}
+
+function reloadAll() {
+  var elements = document.querySelectorAll('link');
+  forEach.call(elements, function(el) {
+    if (el.visited === true) return;
+    updateCss(el);
+  });
+}
+
+module.exports = function(moduleId, options) {
+  if (noDocument) {
+    return noop;
+  }
+
+  // eslint-disable-next-line vars-on-top
+  var getScriptSrc = getCurrentScriptUrl(moduleId);
+
+  function update() {
+    var src = getScriptSrc(options.filename);
+    var reloaded = reloadStyle(src);
+    if (reloaded && !options.reloadAll) {
+      console.log('[HMR] css reload %s', src.join(' '));
+    } else {
+      console.log('[HMR] Reload all css');
+      reloadAll();
+    }
+  }
+
+  return debounce(update, 10);
+};
+"
+`;
diff --git a/test/cases/hmr/expected/main.js b/test/cases/hmr/expected/main.js
new file mode 100644
index 00000000..d3cb7130
--- /dev/null
+++ b/test/cases/hmr/expected/main.js
@@ -0,0 +1,94 @@
+/******/ (function(modules) { // webpackBootstrap
+/******/ 	// The module cache
+/******/ 	var installedModules = {};
+/******/
+/******/ 	// The require function
+/******/ 	function __webpack_require__(moduleId) {
+/******/
+/******/ 		// Check if module is in cache
+/******/ 		if(installedModules[moduleId]) {
+/******/ 			return installedModules[moduleId].exports;
+/******/ 		}
+/******/ 		// Create a new module (and put it into the cache)
+/******/ 		var module = installedModules[moduleId] = {
+/******/ 			i: moduleId,
+/******/ 			l: false,
+/******/ 			exports: {}
+/******/ 		};
+/******/
+/******/ 		// Execute the module function
+/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
+/******/
+/******/ 		// Flag the module as loaded
+/******/ 		module.l = true;
+/******/
+/******/ 		// Return the exports of the module
+/******/ 		return module.exports;
+/******/ 	}
+/******/
+/******/
+/******/ 	// expose the modules object (__webpack_modules__)
+/******/ 	__webpack_require__.m = modules;
+/******/
+/******/ 	// expose the module cache
+/******/ 	__webpack_require__.c = installedModules;
+/******/
+/******/ 	// define getter function for harmony exports
+/******/ 	__webpack_require__.d = function(exports, name, getter) {
+/******/ 		if(!__webpack_require__.o(exports, name)) {
+/******/ 			Object.defineProperty(exports, name, { enumerable: true, get: getter });
+/******/ 		}
+/******/ 	};
+/******/
+/******/ 	// define __esModule on exports
+/******/ 	__webpack_require__.r = function(exports) {
+/******/ 		if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
+/******/ 			Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
+/******/ 		}
+/******/ 		Object.defineProperty(exports, '__esModule', { value: true });
+/******/ 	};
+/******/
+/******/ 	// create a fake namespace object
+/******/ 	// mode & 1: value is a module id, require it
+/******/ 	// mode & 2: merge all properties of value into the ns
+/******/ 	// mode & 4: return value when already ns object
+/******/ 	// mode & 8|1: behave like require
+/******/ 	__webpack_require__.t = function(value, mode) {
+/******/ 		if(mode & 1) value = __webpack_require__(value);
+/******/ 		if(mode & 8) return value;
+/******/ 		if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
+/******/ 		var ns = Object.create(null);
+/******/ 		__webpack_require__.r(ns);
+/******/ 		Object.defineProperty(ns, 'default', { enumerable: true, value: value });
+/******/ 		if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
+/******/ 		return ns;
+/******/ 	};
+/******/
+/******/ 	// getDefaultExport function for compatibility with non-harmony modules
+/******/ 	__webpack_require__.n = function(module) {
+/******/ 		var getter = module && module.__esModule ?
+/******/ 			function getDefault() { return module['default']; } :
+/******/ 			function getModuleExports() { return module; };
+/******/ 		__webpack_require__.d(getter, 'a', getter);
+/******/ 		return getter;
+/******/ 	};
+/******/
+/******/ 	// Object.prototype.hasOwnProperty.call
+/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
+/******/
+/******/ 	// __webpack_public_path__
+/******/ 	__webpack_require__.p = "";
+/******/
+/******/
+/******/ 	// Load entry module and return exports
+/******/ 	return __webpack_require__(__webpack_require__.s = 0);
+/******/ })
+/************************************************************************/
+/******/ ([
+/* 0 */
+/***/ (function(module, exports, __webpack_require__) {
+
+// extracted by mini-css-extract-plugin
+
+/***/ })
+/******/ ]);
\ No newline at end of file