From 27bcbf4b41373f8fbd3941c8ea6645414dac4fdd Mon Sep 17 00:00:00 2001
From: Chad Scharf <3904944+cscharf@users.noreply.github.com>
Date: Thu, 17 Sep 2020 15:36:11 -0400
Subject: [PATCH] Conditional load of biometrics API on Win10+ (#169)

* Conditional load of biometrics API on Win10+

* consolidate if block

* Return -1 instead of null
---
 src/electron/biometric.windows.main.ts | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/electron/biometric.windows.main.ts b/src/electron/biometric.windows.main.ts
index 1d9f3df008..316110b5ec 100644
--- a/src/electron/biometric.windows.main.ts
+++ b/src/electron/biometric.windows.main.ts
@@ -48,7 +48,7 @@ export default class BiometricWindowsMain implements BiometricMain {
 
     getWindowsSecurityCredentialsUiModule(): any {
         try {
-            if (this.windowsSecurityCredentialsUiModule == null) {
+            if (this.windowsSecurityCredentialsUiModule == null && this.getWindowsMajorVersion() >= 10) {
                 this.windowsSecurityCredentialsUiModule = require('@nodert-win10-rs4/windows.security.credentials.ui');
             }
             return this.windowsSecurityCredentialsUiModule;
@@ -110,4 +110,16 @@ export default class BiometricWindowsMain implements BiometricMain {
         } catch { /*Ignore error*/ }
         return [];
     }
+
+    getWindowsMajorVersion(): number {
+        if (process.platform !== 'win32') {
+            return -1;
+        }
+        try {
+            const version = require('os').release();
+            return Number.parseInt(version.split('.')[0], 10);
+        }
+        catch { }
+        return -1;
+    }
 }