From bde0b46021190aa4c8e5553dd36561f45b130abb Mon Sep 17 00:00:00 2001
From: Jordi Baylina <jordi@baylina.cat>
Date: Wed, 21 Oct 2020 15:16:31 +0200
Subject: [PATCH] Fix 0 sized slice and sets

---
 build/main.cjs   | 4 +++-
 src/bigbuffer.js | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/build/main.cjs b/build/main.cjs
index ce453e9..4ba3789 100644
--- a/build/main.cjs
+++ b/build/main.cjs
@@ -5103,7 +5103,7 @@ class BigBuffer {
         const firstPage = Math.floor(fr / PAGE_SIZE);
         const lastPage = Math.floor((fr+len-1) / PAGE_SIZE);
 
-        if (firstPage == lastPage)
+        if ((firstPage == lastPage)||(len==0))
             return this.buffers[firstPage].slice(fr%PAGE_SIZE, fr%PAGE_SIZE + len);
 
         let buff;
@@ -5138,6 +5138,8 @@ class BigBuffer {
 
         const len = buff.byteLength;
 
+        if (len==0) return;
+
         const firstPage = Math.floor(offset / PAGE_SIZE);
         const lastPage = Math.floor((offset+len-1) / PAGE_SIZE);
 
diff --git a/src/bigbuffer.js b/src/bigbuffer.js
index ac6aa19..91fb93b 100644
--- a/src/bigbuffer.js
+++ b/src/bigbuffer.js
@@ -21,7 +21,7 @@ export default class BigBuffer {
         const firstPage = Math.floor(fr / PAGE_SIZE);
         const lastPage = Math.floor((fr+len-1) / PAGE_SIZE);
 
-        if (firstPage == lastPage)
+        if ((firstPage == lastPage)||(len==0))
             return this.buffers[firstPage].slice(fr%PAGE_SIZE, fr%PAGE_SIZE + len);
 
         let buff;
@@ -56,6 +56,8 @@ export default class BigBuffer {
 
         const len = buff.byteLength;
 
+        if (len==0) return;
+
         const firstPage = Math.floor(offset / PAGE_SIZE);
         const lastPage = Math.floor((offset+len-1) / PAGE_SIZE);