Improve performance of parsing newline delimited JSON in Chrome

joshklein · Mar 3, 2021 · ad44e31 · ad44e31
1 parent 07e2b6e
commit ad44e31
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/src/jsonrepair.js b/src/jsonrepair.js
@@ -125,15 +125,20 @@ export default function jsonrepair (text) {
     // start of a new value after end of the root level object: looks like
     // newline delimited JSON -> turn into a root level array
 
+    let stashedOutput = ''
+
     while (tokenIsStartOfValue()) {
       output = insertBeforeLastWhitespace(output, ',')
 
+      stashedOutput += output
+      output = ''
+
       // parse next newline delimited item
       parseObject()
     }
 
     // wrap the output in an array
-    return `[\n${output}\n]`
+    return `[\n${stashedOutput}${output}\n]`
   }
 
   throw new JsonRepairError('Unexpected characters', index - token.length)