diff --git a/lib/serializer.js b/lib/serializer.js
index 387e8927..1ad588a1 100644
--- a/lib/serializer.js
+++ b/lib/serializer.js
@@ -1,7 +1,7 @@
 'use strict'
 
 // eslint-disable-next-line
-const STR_ESCAPE = /[\u0000-\u001f\u0022\u005c\ud800-\udfff]|[\ud800-\udbff](?![\udc00-\udfff])|(?:[^\ud800-\udbff]|^)[\udc00-\udfff]/
+const STR_ESCAPE = /[\u0000-\u001f\u0022\u005c\ud800-\udfff]/
 
 module.exports = class Serializer {
   constructor (options) {
@@ -25,13 +25,12 @@ module.exports = class Serializer {
 
   asInteger (i) {
     if (typeof i === 'number') {
-      if (i === Infinity || i === -Infinity) {
-        throw new Error(`The value "${i}" cannot be converted to an integer.`)
-      }
       if (Number.isInteger(i)) {
         return '' + i
       }
-      if (Number.isNaN(i)) {
+      // check if number is Infinity or NaN
+      // eslint-disable-next-line no-self-compare
+      if (i === Infinity || i === -Infinity || i !== i) {
         throw new Error(`The value "${i}" cannot be converted to an integer.`)
       }
       return this.parseInteger(i)
@@ -52,7 +51,9 @@ module.exports = class Serializer {
 
   asNumber (i) {
     const num = Number(i)
-    if (Number.isNaN(num)) {
+    // check if number is NaN
+    // eslint-disable-next-line no-self-compare
+    if (num !== num) {
       throw new Error(`The value "${i}" cannot be converted to a number.`)
     } else if (!Number.isFinite(num)) {
       return 'null'
@@ -128,10 +129,6 @@ module.exports = class Serializer {
     // eslint-disable-next-line
     for (var i = 0; i < len; i++) {
       point = str.charCodeAt(i)
-      if (point < 32 || (point >= 0xD800 && point <= 0xDFFF)) {
-        // The current character is non-printable characters or a surrogate.
-        return JSON.stringify(str)
-      }
       if (
         point === 0x22 || // '"'
         point === 0x5c // '\'
@@ -139,6 +136,9 @@ module.exports = class Serializer {
         last === -1 && (last = 0)
         result += str.slice(last, i) + '\\'
         last = i
+      } else if (point < 32 || (point >= 0xD800 && point <= 0xDFFF)) {
+        // The current character is non-printable characters or a surrogate.
+        return JSON.stringify(str)
       }
     }
 
diff --git a/package.json b/package.json
index 7bf62f94..27c7d017 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "fast-json-stringify",
-  "version": "5.13.0",
+  "version": "5.14.0",
   "description": "Stringify your JSON at max speed",
   "main": "index.js",
   "type": "commonjs",
@@ -46,13 +46,13 @@
     "simple-git": "^3.7.1",
     "standard": "^17.0.0",
     "tap": "^16.0.1",
-    "tsd": "^0.30.3",
+    "tsd": "^0.31.0",
     "webpack": "^5.40.0",
     "fast-json-stringify": "."
   },
   "dependencies": {
     "ajv": "^8.10.0",
-    "ajv-formats": "^2.1.1",
+    "ajv-formats": "^3.0.1",
     "fast-deep-equal": "^3.1.3",
     "fast-uri": "^2.1.0",
     "rfdc": "^1.2.0",