diff --git a/.travis.yml b/.travis.yml
index 55c5e48..ac233c3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
 language: node_js
 node_js:
-    - "8"
     - "10"
+    - "12"
diff --git a/README.md b/README.md
index 810fb57..78390df 100644
--- a/README.md
+++ b/README.md
@@ -40,19 +40,19 @@ serialize({
     bool : true,
     nil  : null,
     undef: undefined,
-    date: new Date("Thu, 28 Apr 2016 22:02:17 GMT"),
-    map: new Map([['hello', 'world']]),
-    set: new Set([123, 456]),
-
-    fn: function echo(arg) { return arg; },
-    re: /([^\s]+)/g
+    inf  : Infinity,
+    date : new Date("Thu, 28 Apr 2016 22:02:17 GMT"),
+    map  : new Map([['hello', 'world']]),
+    set  : new Set([123, 456]),
+    fn   : function echo(arg) { return arg; },
+    re   : /([^\s]+)/g
 });
 ```
 
 The above will produce the following string output:
 
 ```js
-'{"str":"string","num":0,"obj":{"foo":"foo"},"arr":[1,2,3],"bool":true,"nil":null,"undef":undefined,"date":new Date("2016-04-28T22:02:17.000Z"),"map":new Map([["hello","world"]]),"set":new Set([123,456]),"fn":function echo(arg) { return arg; },"re":/([^\s]+)/g}'
+'{"str":"string","num":0,"obj":{"foo":"foo"},"arr":[1,2,3],"bool":true,"nil":null,"undef":undefined,"inf":Infinity,"date":new Date("2016-04-28T22:02:17.000Z"),"map":new Map([["hello","world"]]),"set":new Set([123,456]),"fn":function echo(arg) { return arg; },"re":new RegExp("([^\\\\s]+)", "g")}'
 ```
 
 Note: to produced a beautified string, you can pass an optional second argument to `serialize()` to define the number of spaces to be used for the indentation.
diff --git a/index.js b/index.js
index 3594167..26163d8 100644
--- a/index.js
+++ b/index.js
@@ -6,9 +6,12 @@ See the accompanying LICENSE file for terms.
 
 'use strict';
 
+var randomBytes = require('randombytes');
+
 // Generate an internal UID to make the regexp pattern harder to guess.
-var UID                 = Math.floor(Math.random() * 0x10000000000).toString(16);
-var PLACE_HOLDER_REGEXP = new RegExp('"@__(F|R|D|M|S|U)-' + UID + '-(\\d+)__@"', 'g');
+var UID_LENGTH          = 16;
+var UID                 = generateUID();
+var PLACE_HOLDER_REGEXP = new RegExp('(\\\\)?"@__(F|R|D|M|S|U|I)-' + UID + '-(\\d+)__@"', 'g');
 
 var IS_NATIVE_CODE_REGEXP = /\{\s*\[native code\]\s*\}/g;
 var IS_PURE_FUNCTION = /function.*?\(/;
@@ -31,6 +34,15 @@ function escapeUnsafeChars(unsafeChar) {
     return ESCAPED_CHARS[unsafeChar];
 }
 
+function generateUID() {
+    var bytes = randomBytes(UID_LENGTH);
+    var result = '';
+    for(var i=0; i<UID_LENGTH; ++i) {
+        result += bytes[i].toString(16);
+    }
+    return result;
+}
+
 function deleteFunctions(obj){
     var functionKeys = [];
     for (var key in obj) {
@@ -57,6 +69,7 @@ module.exports = function serialize(obj, options) {
     var maps      = [];
     var sets      = [];
     var undefs    = [];
+    var infinities= [];
 
     // Returns placeholders for functions and regexps (identified by index)
     // which are later replaced by their string representation.
@@ -102,6 +115,10 @@ module.exports = function serialize(obj, options) {
             return '@__U-' + UID + '-' + (undefs.push(origValue) - 1) + '__@';
         }
 
+        if (type === 'number' && !isNaN(origValue) && !isFinite(origValue)) {
+            return '@__I-' + UID + '-' + (infinities.push(origValue) - 1) + '__@';
+        }
+
         return value;
     }
 
@@ -175,14 +192,21 @@ module.exports = function serialize(obj, options) {
         str = str.replace(UNSAFE_CHARS_REGEXP, escapeUnsafeChars);
     }
 
-    if (functions.length === 0 && regexps.length === 0 && dates.length === 0 && maps.length === 0 && sets.length === 0 && undefs.length === 0) {
+    if (functions.length === 0 && regexps.length === 0 && dates.length === 0 && maps.length === 0 && sets.length === 0 && undefs.length === 0 && infinities.length === 0) {
         return str;
     }
 
     // Replaces all occurrences of function, regexp, date, map and set placeholders in the
     // JSON string with their string representations. If the original value can
     // not be found, then `undefined` is used.
-    return str.replace(PLACE_HOLDER_REGEXP, function (match, type, valueIndex) {
+    return str.replace(PLACE_HOLDER_REGEXP, function (match, backSlash, type, valueIndex) {
+        // The placeholder may not be preceded by a backslash. This is to prevent
+        // replacing things like `"a\"@__R-<UID>-0__@"` and thus outputting
+        // invalid JS.
+        if (backSlash) {
+            return match;
+        }
+
         if (type === 'D') {
             return "new Date(\"" + dates[valueIndex].toISOString() + "\")";
         }
@@ -203,6 +227,10 @@ module.exports = function serialize(obj, options) {
             return 'undefined'
         }
 
+        if (type === 'I') {
+            return infinities[valueIndex];
+        }
+
         var fn = functions[valueIndex];
 
         return serializeFunc(fn);
diff --git a/package-lock.json b/package-lock.json
index 1377995..be09479 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,99 +1,215 @@
 {
   "name": "serialize-javascript",
-  "version": "2.1.2",
+  "version": "3.1.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
     "@babel/code-frame": {
-      "version": "7.5.5",
-      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.5.5.tgz",
-      "integrity": "sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQag/ztrBC7wegWoQ1nLREPVSKSW8byhTlzTKyNE4ifaTA6lCp7JjpFw==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.8.3.tgz",
+      "integrity": "sha512-a9gxpmdXtZEInkCSHUJDLHZVBgb1QS0jhss4cPP93EW7s+uC5bikET2twEF3KV+7rDblJcmNvTR7VJejqd2C2g==",
       "dev": true,
       "requires": {
-        "@babel/highlight": "^7.0.0"
+        "@babel/highlight": "^7.8.3"
+      }
+    },
+    "@babel/core": {
+      "version": "7.9.6",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.9.6.tgz",
+      "integrity": "sha512-nD3deLvbsApbHAHttzIssYqgb883yU/d9roe4RZymBCDaZryMJDbptVpEpeQuRh4BJ+SYI8le9YGxKvFEvl1Wg==",
+      "dev": true,
+      "requires": {
+        "@babel/code-frame": "^7.8.3",
+        "@babel/generator": "^7.9.6",
+        "@babel/helper-module-transforms": "^7.9.0",
+        "@babel/helpers": "^7.9.6",
+        "@babel/parser": "^7.9.6",
+        "@babel/template": "^7.8.6",
+        "@babel/traverse": "^7.9.6",
+        "@babel/types": "^7.9.6",
+        "convert-source-map": "^1.7.0",
+        "debug": "^4.1.0",
+        "gensync": "^1.0.0-beta.1",
+        "json5": "^2.1.2",
+        "lodash": "^4.17.13",
+        "resolve": "^1.3.2",
+        "semver": "^5.4.1",
+        "source-map": "^0.5.0"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        }
       }
     },
     "@babel/generator": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.7.4.tgz",
-      "integrity": "sha512-m5qo2WgdOJeyYngKImbkyQrnUN1mPceaG5BV+G0E3gWsa4l/jCSryWJdM2x8OuGAOyh+3d5pVYfZWCiNFtynxg==",
+      "version": "7.9.6",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.9.6.tgz",
+      "integrity": "sha512-+htwWKJbH2bL72HRluF8zumBxzuX0ZZUFl3JLNyoUjM/Ho8wnVpPXM6aUz8cfKDqQ/h7zHqKt4xzJteUosckqQ==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.7.4",
+        "@babel/types": "^7.9.6",
         "jsesc": "^2.5.1",
         "lodash": "^4.17.13",
         "source-map": "^0.5.0"
       }
     },
     "@babel/helper-function-name": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.7.4.tgz",
-      "integrity": "sha512-AnkGIdiBhEuiwdoMnKm7jfPfqItZhgRaZfMg1XX3bS25INOnLPjPG1Ppnajh8eqgt5kPJnfqrRHqFqmjKDZLzQ==",
+      "version": "7.9.5",
+      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.9.5.tgz",
+      "integrity": "sha512-JVcQZeXM59Cd1qanDUxv9fgJpt3NeKUaqBqUEvfmQ+BCOKq2xUgaWZW2hr0dkbyJgezYuplEoh5knmrnS68efw==",
       "dev": true,
       "requires": {
-        "@babel/helper-get-function-arity": "^7.7.4",
-        "@babel/template": "^7.7.4",
-        "@babel/types": "^7.7.4"
+        "@babel/helper-get-function-arity": "^7.8.3",
+        "@babel/template": "^7.8.3",
+        "@babel/types": "^7.9.5"
       }
     },
     "@babel/helper-get-function-arity": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.7.4.tgz",
-      "integrity": "sha512-QTGKEdCkjgzgfJ3bAyRwF4yyT3pg+vDgan8DSivq1eS0gwi+KGKE5x8kRcbeFTb/673mkO5SN1IZfmCfA5o+EA==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.8.3.tgz",
+      "integrity": "sha512-FVDR+Gd9iLjUMY1fzE2SR0IuaJToR4RkCDARVfsBBPSP53GEqSFjD8gNyxg246VUyc/ALRxFaAK8rVG7UT7xRA==",
+      "dev": true,
+      "requires": {
+        "@babel/types": "^7.8.3"
+      }
+    },
+    "@babel/helper-member-expression-to-functions": {
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-member-expression-to-functions/-/helper-member-expression-to-functions-7.8.3.tgz",
+      "integrity": "sha512-fO4Egq88utkQFjbPrSHGmGLFqmrshs11d46WI+WZDESt7Wu7wN2G2Iu+NMMZJFDOVRHAMIkB5SNh30NtwCA7RA==",
+      "dev": true,
+      "requires": {
+        "@babel/types": "^7.8.3"
+      }
+    },
+    "@babel/helper-module-imports": {
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.8.3.tgz",
+      "integrity": "sha512-R0Bx3jippsbAEtzkpZ/6FIiuzOURPcMjHp+Z6xPe6DtApDJx+w7UYyOLanZqO8+wKR9G10s/FmHXvxaMd9s6Kg==",
+      "dev": true,
+      "requires": {
+        "@babel/types": "^7.8.3"
+      }
+    },
+    "@babel/helper-module-transforms": {
+      "version": "7.9.0",
+      "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.9.0.tgz",
+      "integrity": "sha512-0FvKyu0gpPfIQ8EkxlrAydOWROdHpBmiCiRwLkUiBGhCUPRRbVD2/tm3sFr/c/GWFrQ/ffutGUAnx7V0FzT2wA==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.7.4"
+        "@babel/helper-module-imports": "^7.8.3",
+        "@babel/helper-replace-supers": "^7.8.6",
+        "@babel/helper-simple-access": "^7.8.3",
+        "@babel/helper-split-export-declaration": "^7.8.3",
+        "@babel/template": "^7.8.6",
+        "@babel/types": "^7.9.0",
+        "lodash": "^4.17.13"
+      }
+    },
+    "@babel/helper-optimise-call-expression": {
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-optimise-call-expression/-/helper-optimise-call-expression-7.8.3.tgz",
+      "integrity": "sha512-Kag20n86cbO2AvHca6EJsvqAd82gc6VMGule4HwebwMlwkpXuVqrNRj6CkCV2sKxgi9MyAUnZVnZ6lJ1/vKhHQ==",
+      "dev": true,
+      "requires": {
+        "@babel/types": "^7.8.3"
+      }
+    },
+    "@babel/helper-replace-supers": {
+      "version": "7.9.6",
+      "resolved": "https://registry.npmjs.org/@babel/helper-replace-supers/-/helper-replace-supers-7.9.6.tgz",
+      "integrity": "sha512-qX+chbxkbArLyCImk3bWV+jB5gTNU/rsze+JlcF6Nf8tVTigPJSI1o1oBow/9Resa1yehUO9lIipsmu9oG4RzA==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-member-expression-to-functions": "^7.8.3",
+        "@babel/helper-optimise-call-expression": "^7.8.3",
+        "@babel/traverse": "^7.9.6",
+        "@babel/types": "^7.9.6"
+      }
+    },
+    "@babel/helper-simple-access": {
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-simple-access/-/helper-simple-access-7.8.3.tgz",
+      "integrity": "sha512-VNGUDjx5cCWg4vvCTR8qQ7YJYZ+HBjxOgXEl7ounz+4Sn7+LMD3CFrCTEU6/qXKbA2nKg21CwhhBzO0RpRbdCw==",
+      "dev": true,
+      "requires": {
+        "@babel/template": "^7.8.3",
+        "@babel/types": "^7.8.3"
       }
     },
     "@babel/helper-split-export-declaration": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.7.4.tgz",
-      "integrity": "sha512-guAg1SXFcVr04Guk9eq0S4/rWS++sbmyqosJzVs8+1fH5NI+ZcmkaSkc7dmtAFbHFva6yRJnjW3yAcGxjueDug==",
+      "version": "7.8.3",
+      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.8.3.tgz",
+      "integrity": "sha512-3x3yOeyBhW851hroze7ElzdkeRXQYQbFIb7gLK1WQYsw2GWDay5gAJNw1sWJ0VFP6z5J1whqeXH/WCdCjZv6dA==",
+      "dev": true,
+      "requires": {
+        "@babel/types": "^7.8.3"
+      }
+    },
+    "@babel/helper-validator-identifier": {
+      "version": "7.9.5",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.9.5.tgz",
+      "integrity": "sha512-/8arLKUFq882w4tWGj9JYzRpAlZgiWUJ+dtteNTDqrRBz9Iguck9Rn3ykuBDoUwh2TO4tSAJlrxDUOXWklJe4g==",
+      "dev": true
+    },
+    "@babel/helpers": {
+      "version": "7.9.6",
+      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.9.6.tgz",
+      "integrity": "sha512-tI4bUbldloLcHWoRUMAj4g1bF313M/o6fBKhIsb3QnGVPwRm9JsNf/gqMkQ7zjqReABiffPV6RWj7hEglID5Iw==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.7.4"
+        "@babel/template": "^7.8.3",
+        "@babel/traverse": "^7.9.6",
+        "@babel/types": "^7.9.6"
       }
     },
     "@babel/highlight": {
-      "version": "7.5.0",
-      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.5.0.tgz",
-      "integrity": "sha512-7dV4eu9gBxoM0dAnj/BCFDW9LFU0zvTrkq0ugM7pnHEgguOEeOz1so2ZghEdzviYzQEED0r4EAgpsBChKy1TRQ==",
+      "version": "7.9.0",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.9.0.tgz",
+      "integrity": "sha512-lJZPilxX7Op3Nv/2cvFdnlepPXDxi29wxteT57Q965oc5R9v86ztx0jfxVrTcBk8C2kcPkkDa2Z4T3ZsPPVWsQ==",
       "dev": true,
       "requires": {
+        "@babel/helper-validator-identifier": "^7.9.0",
         "chalk": "^2.0.0",
-        "esutils": "^2.0.2",
         "js-tokens": "^4.0.0"
       }
     },
     "@babel/parser": {
-      "version": "7.7.5",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.7.5.tgz",
-      "integrity": "sha512-KNlOe9+/nk4i29g0VXgl8PEXIRms5xKLJeuZ6UptN0fHv+jDiriG+y94X6qAgWTR0h3KaoM1wK5G5h7MHFRSig==",
+      "version": "7.9.6",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.9.6.tgz",
+      "integrity": "sha512-AoeIEJn8vt+d/6+PXDRPaksYhnlbMIiejioBZvvMQsOjW/JYK6k/0dKnvvP3EhK5GfMBWDPtrxRtegWdAcdq9Q==",
       "dev": true
     },
     "@babel/template": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.7.4.tgz",
-      "integrity": "sha512-qUzihgVPguAzXCK7WXw8pqs6cEwi54s3E+HrejlkuWO6ivMKx9hZl3Y2fSXp9i5HgyWmj7RKP+ulaYnKM4yYxw==",
+      "version": "7.8.6",
+      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.8.6.tgz",
+      "integrity": "sha512-zbMsPMy/v0PWFZEhQJ66bqjhH+z0JgMoBWuikXybgG3Gkd/3t5oQ1Rw2WQhnSrsOmsKXnZOx15tkC4qON/+JPg==",
       "dev": true,
       "requires": {
-        "@babel/code-frame": "^7.0.0",
-        "@babel/parser": "^7.7.4",
-        "@babel/types": "^7.7.4"
+        "@babel/code-frame": "^7.8.3",
+        "@babel/parser": "^7.8.6",
+        "@babel/types": "^7.8.6"
       }
     },
     "@babel/traverse": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.7.4.tgz",
-      "integrity": "sha512-P1L58hQyupn8+ezVA2z5KBm4/Zr4lCC8dwKCMYzsa5jFMDMQAzaBNy9W5VjB+KAmBjb40U7a/H6ao+Xo+9saIw==",
+      "version": "7.9.6",
+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.9.6.tgz",
+      "integrity": "sha512-b3rAHSjbxy6VEAvlxM8OV/0X4XrG72zoxme6q1MOoe2vd0bEc+TwayhuC1+Dfgqh1QEG+pj7atQqvUprHIccsg==",
       "dev": true,
       "requires": {
-        "@babel/code-frame": "^7.5.5",
-        "@babel/generator": "^7.7.4",
-        "@babel/helper-function-name": "^7.7.4",
-        "@babel/helper-split-export-declaration": "^7.7.4",
-        "@babel/parser": "^7.7.4",
-        "@babel/types": "^7.7.4",
+        "@babel/code-frame": "^7.8.3",
+        "@babel/generator": "^7.9.6",
+        "@babel/helper-function-name": "^7.9.5",
+        "@babel/helper-split-export-declaration": "^7.8.3",
+        "@babel/parser": "^7.9.6",
+        "@babel/types": "^7.9.6",
         "debug": "^4.1.0",
         "globals": "^11.1.0",
         "lodash": "^4.17.13"
@@ -111,16 +227,86 @@
       }
     },
     "@babel/types": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.7.4.tgz",
-      "integrity": "sha512-cz5Ji23KCi4T+YIE/BolWosrJuSmoZeN1EFnRtBwF+KKLi8GG/Z2c2hOJJeCXPk4mwk4QFvTmwIodJowXgttRA==",
+      "version": "7.9.6",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.9.6.tgz",
+      "integrity": "sha512-qxXzvBO//jO9ZnoasKF1uJzHd2+M6Q2ZPIVfnFps8JJvXy0ZBbwbNOmE6SGIY5XOY6d1Bo5lb9d9RJ8nv3WSeA==",
       "dev": true,
       "requires": {
-        "esutils": "^2.0.2",
+        "@babel/helper-validator-identifier": "^7.9.5",
         "lodash": "^4.17.13",
         "to-fast-properties": "^2.0.0"
       }
     },
+    "@istanbuljs/load-nyc-config": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@istanbuljs/load-nyc-config/-/load-nyc-config-1.0.0.tgz",
+      "integrity": "sha512-ZR0rq/f/E4f4XcgnDvtMWXCUJpi8eO0rssVhmztsZqLIEFA9UUP9zmpE0VxlM+kv/E1ul2I876Fwil2ayptDVg==",
+      "dev": true,
+      "requires": {
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+        "find-up": "^4.1.0",
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-      "integrity": "sha512-fXZTSV55dNBwv16uw+hh5jkghxSnc5oHq+5K/gXgizHwAvMetdAJlHqqoFC1FSDVPYWLkAKl2cxpUT41sV7nSg==",
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/string.prototype.trimright/-/string.prototype.trimright-2.1.2.tgz",
+      "integrity": "sha512-ZNRQ7sY3KroTaYjRS6EbNiiHrOkjihL9aQE/8gfQ4DtAC/aEBRHFJa44OmoWxGGqXuJlfKkZW4WcXErGr+9ZFg==",
       "dev": true,
       "requires": {
         "define-properties": "^1.1.3",
-        "function-bind": "^1.1.1"
+        "es-abstract": "^1.17.5",
+        "string.prototype.trimend": "^1.0.0"
+      }
+    },
+    "string.prototype.trimstart": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/string.prototype.trimstart/-/string.prototype.trimstart-1.0.1.tgz",
+      "integrity": "sha512-XxZn+QpvrBI1FOcg6dIpxUPgWCPuNXvMD72aaRaUQv1eD4e/Qy8i/hFTe0BUmD60p/QA6bh1avmuPTfNjqVWRw==",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.3",
+        "es-abstract": "^1.17.5"
       }
     },
     "strip-ansi": {
@@ -1428,9 +1858,9 @@
       }
     },
     "strip-bom": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-3.0.0.tgz",
-      "integrity": "sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM=",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-4.0.0.tgz",
+      "integrity": "sha512-3xurFv5tEgii33Zi8Jtp55wEIILR9eh34FAW00PZf+JnSsTmV/ioewSgQl97JHvgjoRGwPShsWm+IdrxB35d0w==",
       "dev": true
     },
     "strip-json-comments": {
@@ -1449,15 +1879,30 @@
       }
     },
     "test-exclude": {
-      "version": "5.2.3",
-      "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-5.2.3.tgz",
-      "integrity": "sha512-M+oxtseCFO3EDtAaGH7iiej3CBkzXqFMbzqYAACdzKui4eZA+pq3tZEwChvOdNfa7xxy8BfbmgJSIr43cC/+2g==",
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-6.0.0.tgz",
+      "integrity": "sha512-cAGWPIyOHU6zlmg88jwm7VRyXnMN7iV68OGAbYDk/Mh/xC/pzVPlQtY6ngoIH/5/tciuhGfvESU8GrHrcxD56w==",
       "dev": true,
       "requires": {
-        "glob": "^7.1.3",
-        "minimatch": "^3.0.4",
-        "read-pkg-up": "^4.0.0",
-        "require-main-filename": "^2.0.0"
+        "@istanbuljs/schema": "^0.1.2",
+        "glob": "^7.1.4",
+        "minimatch": "^3.0.4"
+      },
+      "dependencies": {
+        "glob": {
+          "version": "7.1.6",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
+          "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==",
+          "dev": true,
+          "requires": {
+            "fs.realpath": "^1.0.0",
+            "inflight": "^1.0.4",
+            "inherits": "2",
+            "minimatch": "^3.0.4",
+            "once": "^1.3.0",
+            "path-is-absolute": "^1.0.0"
+          }
+        }
       }
     },
     "to-fast-properties": {
@@ -1466,48 +1911,42 @@
       "integrity": "sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4=",
       "dev": true
     },
+    "to-regex-range": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
+      "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+      "dev": true,
+      "requires": {
+        "is-number": "^7.0.0"
+      }
+    },
     "type-detect": {
       "version": "4.0.8",
       "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
       "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
       "dev": true
     },
-    "uglify-js": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.7.2.tgz",
-      "integrity": "sha512-uhRwZcANNWVLrxLfNFEdltoPNhECUR3lc+UdJoG9CBpMcSnKyWA94tc3eAujB1GcMY5Uwq8ZMp4qWpxWYDQmaA==",
+    "type-fest": {
+      "version": "0.8.1",
+      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.8.1.tgz",
+      "integrity": "sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==",
+      "dev": true
+    },
+    "typedarray-to-buffer": {
+      "version": "3.1.5",
+      "resolved": "https://registry.npmjs.org/typedarray-to-buffer/-/typedarray-to-buffer-3.1.5.tgz",
+      "integrity": "sha512-zdu8XMNEDepKKR+XYOXAVPtWui0ly0NtohUscw+UmaHiAWT8hrV1rr//H6V+0DvJ3OQ19S979M0laLfX8rm82Q==",
       "dev": true,
-      "optional": true,
       "requires": {
-        "commander": "~2.20.3",
-        "source-map": "~0.6.1"
-      },
-      "dependencies": {
-        "source-map": {
-          "version": "0.6.1",
-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
-          "dev": true,
-          "optional": true
-        }
+        "is-typedarray": "^1.0.0"
       }
     },
     "uuid": {
-      "version": "3.3.3",
-      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.3.tgz",
-      "integrity": "sha512-pW0No1RGHgzlpHJO1nsVrHKpOEIxkGg1xB+v0ZmdNH5OAeAwzAVrCnI2/6Mtx+Uys6iaylxa+D3g4j63IKKjSQ==",
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.4.0.tgz",
+      "integrity": "sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==",
       "dev": true
     },
-    "validate-npm-package-license": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
-      "integrity": "sha512-DpKm2Ui/xN7/HQKCtpZxoRWBhZ9Z0kqtygG8XCgNQ8ZlDnxuQmWhj566j8fN4Cu3/JmbhsDo7fcAJq4s9h27Ew==",
-      "dev": true,
-      "requires": {
-        "spdx-correct": "^3.0.0",
-        "spdx-expression-parse": "^3.0.0"
-      }
-    },
     "which": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
@@ -1532,12 +1971,6 @@
         "string-width": "^1.0.2 || 2"
       }
     },
-    "wordwrap": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
-      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
-      "dev": true
-    },
     "wrap-ansi": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
@@ -1584,14 +2017,15 @@
       "dev": true
     },
     "write-file-atomic": {
-      "version": "2.4.3",
-      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.4.3.tgz",
-      "integrity": "sha512-GaETH5wwsX+GcnzhPgKcKjJ6M2Cq3/iZp1WyY/X1CSqrW+jVNM9Y7D8EC2sM4ZG/V8wZlSniJnCKWPmBYAucRQ==",
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-3.0.3.tgz",
+      "integrity": "sha512-AvHcyZ5JnSfq3ioSyjrBkH9yW4m7Ayk8/9My/DD9onKeu/94fwrMocemO2QAJFAlnnDN+ZDS+ZjAR5ua1/PV/Q==",
       "dev": true,
       "requires": {
-        "graceful-fs": "^4.1.11",
         "imurmurhash": "^0.1.4",
-        "signal-exit": "^3.0.2"
+        "is-typedarray": "^1.0.0",
+        "signal-exit": "^3.0.2",
+        "typedarray-to-buffer": "^3.1.5"
       }
     },
     "y18n": {
@@ -1600,16 +2034,10 @@
       "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
       "dev": true
     },
-    "yallist": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
-      "dev": true
-    },
     "yargs": {
-      "version": "13.3.0",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.0.tgz",
-      "integrity": "sha512-2eehun/8ALW8TLoIl7MVaRUrg+yCnenu8B4kBlRxj3GJGDKU1Og7sMXPNm1BYyM1DOJmTZ4YeN/Nwxv+8XJsUA==",
+      "version": "13.3.2",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.2.tgz",
+      "integrity": "sha512-AX3Zw5iPruN5ie6xGRIDgqkT+ZhnRlZMLMHAs8tg7nRruy2Nb+i5o9bwghAogtM08q1dpr2LVoS8KSTMYpWXUw==",
       "dev": true,
       "requires": {
         "cliui": "^5.0.0",
@@ -1621,7 +2049,7 @@
         "string-width": "^3.0.0",
         "which-module": "^2.0.0",
         "y18n": "^4.0.0",
-        "yargs-parser": "^13.1.1"
+        "yargs-parser": "^13.1.2"
       },
       "dependencies": {
         "ansi-regex": {
@@ -1653,9 +2081,9 @@
       }
     },
     "yargs-parser": {
-      "version": "13.1.1",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.1.tgz",
-      "integrity": "sha512-oVAVsHz6uFrg3XQheFII8ESO2ssAf9luWuAd6Wexsu4F3OtIW0o8IribPXYrD4WC24LWtPrJlGy87y5udK+dxQ==",
+      "version": "13.1.2",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.2.tgz",
+      "integrity": "sha512-3lbsNRf/j+A4QuSZfDRA7HRSfWrzO0YjqTJd5kjAq37Zep1CEgaYmrH9Q3GwPiB9cHyd1Y1UwggGhJGoxipbzg==",
       "dev": true,
       "requires": {
         "camelcase": "^5.0.0",
diff --git a/package.json b/package.json
index 226b455..8d3c320 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "serialize-javascript",
-  "version": "2.1.2",
+  "version": "3.1.0",
   "description": "Serialize JavaScript to a superset of JSON that includes regular expressions and functions.",
   "main": "index.js",
   "scripts": {
@@ -27,7 +27,10 @@
   "devDependencies": {
     "benchmark": "^2.1.4",
     "chai": "^4.1.0",
-    "mocha": "^6.2.0",
-    "nyc": "^14.1.1"
+    "mocha": "^7.0.0",
+    "nyc": "^15.0.0"
+  },
+  "dependencies": {
+    "randombytes": "^2.1.0"
   }
 }
diff --git a/test/unit/serialize.js b/test/unit/serialize.js
index 5241916..88b3603 100644
--- a/test/unit/serialize.js
+++ b/test/unit/serialize.js
@@ -1,9 +1,23 @@
 /* global describe, it, beforeEach */
 'use strict';
 
+// temporarily monkeypatch `crypto.randomBytes` so we'll have a
+// predictable UID for our tests
+var crypto = require('crypto');
+var oldRandom = crypto.randomBytes;
+crypto.randomBytes = function(len, cb) {
+    var buf = Buffer.alloc(len);
+    buf.fill(0x00);
+    if (cb)
+        cb(null, buf);
+    return buf;
+};
+
 var serialize = require('../../'),
     expect    = require('chai').expect;
 
+crypto.randomBytes = oldRandom;
+
 describe('serialize( obj )', function () {
     it('should be a function', function () {
         expect(serialize).to.be.a('function');
@@ -299,7 +313,7 @@ describe('serialize( obj )', function () {
         });
 
         it('should serialize dangerous regexps', function () {
-            var re = /[</script><script>alert('xss')//]/
+            var re = /[<\/script><script>alert('xss')\/\/]/
             expect(serialize(re)).to.be.a('string').equal('new RegExp("[\\u003C\\\\\\u002Fscript\\u003E\\u003Cscript\\u003Ealert(\'xss\')\\\\\\u002F\\\\\\u002F]", "")');
         });
     });
@@ -335,16 +349,18 @@ describe('serialize( obj )', function () {
             var regexKey = /.*/;
             var m = new Map([
                 ['a', 123],
-                [regexKey, 456]
+                [regexKey, 456],
+                [Infinity, 789]
             ]);
-            expect(serialize(m)).to.be.a('string').equal('new Map([["a",123],[new RegExp(".*", ""),456]])');
-            expect(serialize({t: [m]})).to.be.a('string').equal('{"t":[new Map([["a",123],[new RegExp(".*", ""),456]])]}');
+            expect(serialize(m)).to.be.a('string').equal('new Map([["a",123],[new RegExp(".*", ""),456],[Infinity,789]])');
+            expect(serialize({t: [m]})).to.be.a('string').equal('{"t":[new Map([["a",123],[new RegExp(".*", ""),456],[Infinity,789]])]}');
         });
 
         it('should deserialize a map', function () {
             var m = eval(serialize(new Map([
                 ['a', 123],
-                [null, 456]
+                [null, 456],
+                [Infinity, 789]
             ])));
             expect(m).to.be.a('Map');
             expect(m.get(null)).to.equal(456);
@@ -357,23 +373,47 @@ describe('serialize( obj )', function () {
             var m = new Set([
                 'a',
                 123,
-                regex
+                regex,
+                Infinity
             ]);
-            expect(serialize(m)).to.be.a('string').equal('new Set(["a",123,new RegExp(".*", "")])');
-            expect(serialize({t: [m]})).to.be.a('string').equal('{"t":[new Set(["a",123,new RegExp(".*", "")])]}');
+            expect(serialize(m)).to.be.a('string').equal('new Set(["a",123,new RegExp(".*", ""),Infinity])');
+            expect(serialize({t: [m]})).to.be.a('string').equal('{"t":[new Set(["a",123,new RegExp(".*", ""),Infinity])]}');
         });
 
         it('should deserialize a set', function () {
             var m = eval(serialize(new Set([
                 'a',
                 123,
-                null
+                null,
+                Infinity
             ])));
             expect(m).to.be.a('Set');
             expect(m.has(null)).to.equal(true);
         });
     });
 
+    describe('Infinity', function () {
+        it('should serialize Infinity', function () {
+            expect(serialize(Infinity)).to.equal('Infinity');
+            expect(serialize({t: [Infinity]})).to.be.a('string').equal('{"t":[Infinity]}');
+        });
+
+        it('should deserialize Infinity', function () {
+            var d = eval(serialize(Infinity));
+            expect(d).to.equal(Infinity);
+        });
+
+        it('should serialize -Infinity', function () {
+            expect(serialize(-Infinity)).to.equal('-Infinity');
+            expect(serialize({t: [-Infinity]})).to.be.a('string').equal('{"t":[-Infinity]}');
+        });
+
+        it('should deserialize -Infinity', function () {
+            var d = eval(serialize(-Infinity));
+            expect(d).to.equal(-Infinity);
+        });
+    });
+
     describe('XSS', function () {
         it('should encode unsafe HTML chars to Unicode', function () {
             expect(serialize('</script>')).to.equal('"\\u003C\\u002Fscript\\u003E"');
@@ -467,4 +507,17 @@ describe('serialize( obj )', function () {
             expect(serialize([1], 2)).to.equal('[\n  1\n]');
         });
     });
+
+    describe('placeholders', function() {
+        it('should not be replaced within string literals', function () {
+            // Since we made the UID deterministic this should always be the placeholder
+            var fakePlaceholder = '"@__R-0000000000000000-0__@';
+            var serialized = serialize({bar: /1/i, foo: fakePlaceholder}, {uid: 'foo'});
+            var obj = eval('(' + serialized + ')');
+            expect(obj).to.be.a('Object');
+            expect(obj.foo).to.be.a('String');
+            expect(obj.foo).to.equal(fakePlaceholder);
+        });
+    });
+
 });