From 0225ae27744063037d731ae63ca729bbc72b1c81 Mon Sep 17 00:00:00 2001
From: Ricardo Spear <spear.ricardo@gmail.com>
Date: Wed, 25 Oct 2023 17:12:51 -0500
Subject: [PATCH 1/2] strip BOM when streaming chunk

---
 papaparse.js | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/papaparse.js b/papaparse.js
index 4bc3dc37..b48f8d7d 100755
--- a/papaparse.js
+++ b/papaparse.js
@@ -186,7 +186,13 @@ License: MIT
 	}
 
 
-
+	// Strip character from UTF-8 BOM encoded files that cause issue parsing the file
+	function stripBom(string) {
+		if (string.charCodeAt(0) === 0xfeff) {
+			return string.slice(1);
+		}
+		return string;
+	}
 
 	function CsvToJson(_input, _config)
 	{
@@ -249,14 +255,6 @@ License: MIT
 			streamer = new FileStreamer(_config);
 
 		return streamer.stream(_input);
-
-		// Strip character from UTF-8 BOM encoded files that cause issue parsing the file
-		function stripBom(string) {
-			if (string.charCodeAt(0) === 0xfeff) {
-				return string.slice(1);
-			}
-			return string;
-		}
 	}
 
 
@@ -513,6 +511,7 @@ License: MIT
 			// First chunk pre-processing
 			if (this.isFirstChunk && isFunction(this._config.beforeFirstChunk))
 			{
+				chunk = stripBom(chunk);
 				var modifiedChunk = this._config.beforeFirstChunk(chunk);
 				if (modifiedChunk !== undefined)
 					chunk = modifiedChunk;

From b104eadc768b9f6a4ef4db487675adbc43a5fdd1 Mon Sep 17 00:00:00 2001
From: Ricardo Spear <spear.ricardo@gmail.com>
Date: Thu, 26 Oct 2023 12:08:40 -0500
Subject: [PATCH 2/2] strimbom even if beforeFirstChunk is not declared

---
 papaparse.js | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/papaparse.js b/papaparse.js
index b48f8d7d..dd8255a8 100755
--- a/papaparse.js
+++ b/papaparse.js
@@ -509,12 +509,14 @@ License: MIT
 		this.parseChunk = function(chunk, isFakeChunk)
 		{
 			// First chunk pre-processing
-			if (this.isFirstChunk && isFunction(this._config.beforeFirstChunk))
+			if (this.isFirstChunk)
 			{
 				chunk = stripBom(chunk);
-				var modifiedChunk = this._config.beforeFirstChunk(chunk);
-				if (modifiedChunk !== undefined)
-					chunk = modifiedChunk;
+				if (isFunction(this._config.beforeFirstChunk)) {
+					var modifiedChunk = this._config.beforeFirstChunk(chunk);
+					if (modifiedChunk !== undefined)
+						chunk = modifiedChunk;
+				}
 			}
 			this.isFirstChunk = false;
 			this._halted = false;