diff --git a/lib/serializer.js b/lib/serializer.js
index d92a4e32..31319ea4 100644
--- a/lib/serializer.js
+++ b/lib/serializer.js
@@ -1,5 +1,7 @@
 'use strict'
 
+const findEscapeSequence = /["\b\t\n\v\f\r\/]/
+
 module.exports = class Serializer {
   constructor (options) {
     switch (options && options.rounding) {
@@ -88,37 +90,10 @@ module.exports = class Serializer {
   }
 
   asString (str) {
-    const len = str.length
-    if (len < 42) {
-      // magically escape strings for json
-      // relying on their charCodeAt
-      // everything below 32 needs JSON.stringify()
-      // every string that contain surrogate needs JSON.stringify()
-      // 34 and 92 happens all the time, so we
-      // have a fast case for them
-      let result = ''
-      let last = -1
-      let point = 255
-      for (let i = 0; i < len; i++) {
-        point = str.charCodeAt(i)
-        if (
-          point === 0x22 || // '"'
-          point === 0x5c // '\'
-        ) {
-          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)
-        }
-      }
-      return (last === -1 && ('"' + str + '"')) || ('"' + result + str.slice(last) + '"')
-    } else if (len < 5000 && str.isWellFormed()) {
-      // Only use the regular expression for shorter input. The overhead is otherwise too much.
-      return '"' + str + '"'
-    } else {
+    if (findEscapeSequence.test(str)) {
       return JSON.stringify(str)
+    } else {
+      return '"' + str + '"'
     }
   }