fix: fix noLeftContext

Author: aminya

Readme.md

@@ -2,7 +2,7 @@
 
 Minify JSON files **blazing fast**! Supports Comments. Written in D.
 
-60 times faster than jsonminify!
+360 times faster than jsonminify!
 
 [![CI](https://github.com/aminya/minijson/actions/workflows/CI.yml/badge.svg)](https://github.com/aminya/minijson/actions/workflows/CI.yml)
 
@@ -88,9 +88,11 @@ minifyFiles(["file1.json", "file2.json"], true);
 
 ### Benchmarks
 
+On AMD Ryzen 7 4800H:
+
 ```
 ❯ node .\benchmark\native-benchmark.mjs
-0.977 seconds
+0.163 seconds
 
 ❯ node .\benchmark\js-benchmark.mjs
 58.818 seconds

src/native/lib.d

@@ -46,24 +46,24 @@ string minifyString(in string jsonString, in bool hasComment = false) @trusted
     if (noCommentOrNotInComment)
     {
       auto leftContextSubstr = match.pre()[prevFrom .. $];
-      if (leftContextSubstr.length != 0)
+      const noLeftContext = leftContextSubstr.length == 0;
+      if (!in_string && !noLeftContext)
       {
-        if (!in_string)
-        {
-          leftContextSubstr = leftContextSubstr.replaceAll(spaceOrBreakRegex, "");
-        }
+        leftContextSubstr = leftContextSubstr.replaceAll(spaceOrBreakRegex, "");
+      }
+      if (!noLeftContext) {
         result ~= leftContextSubstr;
+      }
 
-        if (matchFrontHit == "\"")
+      if (matchFrontHit == "\"")
+      {
+        if (!in_string || noLeftContext || hasNoSlashOrEvenNumberOfSlashes(leftContextSubstr))
         {
-          if (!in_string || hasNoSlashOrEvenNumberOfSlashes(leftContextSubstr))
-          {
-            // start of string with ", or unescaped " character found to end string
-            in_string = !in_string;
-          }
-          --from; // include " character in next catch
-          rightContext = jsonString[from .. $];
+          // start of string with ", or unescaped " character found to end string
+          in_string = !in_string;
         }
+        --from; // include " character in next catch
+        rightContext = jsonString[from .. $];
       }
     }
     // comments