Reset regex index to match from start of string

Author: nmzaheer

Diff for: package-lock.json

@@ -33,8 +33,9 @@ export const parseSerialMessages = (
   // so we need to discard it and start aggregating from the first encountered separator
   let joinMessages = messages.join("");
   if (discardFirstLine) {
+    separatorRegex.lastIndex = 0; // Reset lastIndex to ensure match happens from beginning of string
     const separatorMatch = separatorRegex.exec(joinMessages);
-	  if (separatorMatch && separatorMatch.index > -1) {
+    if (separatorMatch && separatorMatch.index > -1) {
       joinMessages = joinMessages.substring(
         separatorMatch.index + separatorMatch[0].length
       );
@@ -54,6 +55,7 @@ export const parseSerialMessages = (
 
   // remove the previous buffer
   buffer = "";
+  separatorRegex.lastIndex = 0;
   // check if the last message contains the delimiter, if not, it's an incomplete string that needs to be added to the buffer
   if (!separatorRegex.test(messagesAndBuffer[messagesAndBuffer.length - 1])) {
     buffer = messagesAndBuffer[messagesAndBuffer.length - 1];
@@ -64,11 +66,12 @@ export const parseSerialMessages = (
   const parsedLines: { [key: string]: number }[] = [];
 
   // for each line, explode variables
+  separatorRegex.lastIndex = 0;
   messagesAndBuffer
-  .filter((message) => !separatorRegex.test(message))
+    .filter((message) => !separatorRegex.test(message))
     .forEach((message) => {
       const parsedLine: { [key: string]: number } = {};
-      
+
       // Part Separator symbols i.e. Space, Tab & Comma are fully supported
       // SerialPlotter protocol specifies 3 message formats. The following 2 formats are supported
       // Value only format: <value1> <value2> <value3>