From 740f2cab0cd390d5b7e8a70b6211090f891207e2 Mon Sep 17 00:00:00 2001
From: Jerome Wu <jeromewus@gmail.com>
Date: Wed, 25 Sep 2019 22:48:17 +0800
Subject: [PATCH] Add isBrowser to resolve DOMException undefined issue in node

---
 src/common/workerUtils.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/common/workerUtils.js b/src/common/workerUtils.js
index 86c3f12..5d582d0 100644
--- a/src/common/workerUtils.js
+++ b/src/common/workerUtils.js
@@ -13,6 +13,8 @@ const dump = require('./dump');
 const { defaultParams } = require('./options');
 const { OEM, PSM } = require('./types');
 
+const isBrowser = typeof window !== 'undefined' && typeof window.document !== 'undefined';
+
 /*
  * Tesseract Module returned by TesseractCore.
  */
@@ -230,7 +232,7 @@ const handleRecognize = ({
     .then(() => (
       loadLanguage({ langs, params, options }, res)
         .catch((e) => {
-          if (e instanceof DOMException) {
+          if (isBrowser && e instanceof DOMException) {
             /*
              * For some reason google chrome throw DOMException in loadLang,
              * while other browser is OK, for now we ignore this exception