From b355f7eaf6039e99a82672597560874d5fc32487 Mon Sep 17 00:00:00 2001
From: Debadutta Panda <debadebaduttapanda.7@gmail.com>
Date: Tue, 18 Oct 2022 21:57:21 +0530
Subject: [PATCH] resolve #857

---
 .../__tests__/utils/getExtentionFromFilename.test.js   | 10 ++++++++++
 src/js/utils/getExtensionFromFilename.js               |  5 ++++-
 2 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 src/js/__tests__/utils/getExtentionFromFilename.test.js

diff --git a/src/js/__tests__/utils/getExtentionFromFilename.test.js b/src/js/__tests__/utils/getExtentionFromFilename.test.js
new file mode 100644
index 00000000..04a9ded7
--- /dev/null
+++ b/src/js/__tests__/utils/getExtentionFromFilename.test.js
@@ -0,0 +1,10 @@
+import {getExtensionFromFilename} from '../../utils/getExtensionFromFilename'
+describe("getExtensionFromFilename",()=>{
+    test.each([
+        ['a.pdf','pdf'],
+        ['a.module.js','js'],
+        ['a',''],
+    ])("should return exact extention name", (filename,expectedExtention) => {
+        expect(getExtensionFromFilename(filename)).toBe(expectedExtention)
+    })
+})
\ No newline at end of file
diff --git a/src/js/utils/getExtensionFromFilename.js b/src/js/utils/getExtensionFromFilename.js
index fe4702a1..c2a1c498 100644
--- a/src/js/utils/getExtensionFromFilename.js
+++ b/src/js/utils/getExtensionFromFilename.js
@@ -1 +1,4 @@
-export const getExtensionFromFilename = name => name.split('.').pop();
+export const getExtensionFromFilename = name => {
+    const fileExt=name.split('.');
+    return fileExt.length >= 2 ? fileExt.pop() : '';
+}