From 95a29578ec3e52d124ac6328694dfc028dcaba25 Mon Sep 17 00:00:00 2001
From: Marcos Passos <marcos@croct.com>
Date: Fri, 4 Jun 2021 12:38:11 -0400
Subject: [PATCH] Fix Plug initialization on server-side

---
 src/hooks/useCroct.ssr.test.tsx | 18 ++++++++++++++++++
 src/ssr-polyfills.ssr.test.ts   |  8 ++++++++
 src/ssr-polyfills.ts            |  5 ++++-
 3 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 src/hooks/useCroct.ssr.test.tsx

diff --git a/src/hooks/useCroct.ssr.test.tsx b/src/hooks/useCroct.ssr.test.tsx
new file mode 100644
index 00000000..33e8a76d
--- /dev/null
+++ b/src/hooks/useCroct.ssr.test.tsx
@@ -0,0 +1,18 @@
+import {renderHook} from '@testing-library/react-hooks/server';
+import {ReactNode} from 'react';
+import {useCroct} from './useCroct';
+import {CroctProvider} from '../CroctProvider';
+
+describe('useCroct', () => {
+    it('should not fail on server-side rendering', () => {
+        const {result} = renderHook(() => useCroct(), {
+            wrapper: ({children}: {children?: ReactNode}) => (
+                <CroctProvider appId="00000000-0000-0000-0000-000000000000">
+                    {children}
+                </CroctProvider>
+            ),
+        });
+
+        expect(result.error).toBeUndefined();
+    });
+});
diff --git a/src/ssr-polyfills.ssr.test.ts b/src/ssr-polyfills.ssr.test.ts
index 31315914..ac9de8fe 100644
--- a/src/ssr-polyfills.ssr.test.ts
+++ b/src/ssr-polyfills.ssr.test.ts
@@ -19,6 +19,14 @@ describe('Croct polyfill (SSR)', () => {
         expect(croct.unplug).not.toHaveBeenCalled();
     });
 
+    it('should not initialize', () => {
+        expect(croctPolyfill.initialized).toBe(false);
+
+        croctPolyfill.plug({appId: '00000000-0000-0000-0000-000000000000'});
+
+        expect(croctPolyfill.initialized).toBe(false);
+    });
+
     it('should not allow accessing properties other than plug or unplug', () => {
         expect(() => croctPolyfill.user)
             .toThrow('Property croct.user is not supported on server-side (SSR).');
diff --git a/src/ssr-polyfills.ts b/src/ssr-polyfills.ts
index dde808b4..527bd936 100644
--- a/src/ssr-polyfills.ts
+++ b/src/ssr-polyfills.ts
@@ -5,8 +5,11 @@ export function isSsr(): boolean {
 }
 
 export const croct: Plug = !isSsr() ? csrPlug : new Proxy(csrPlug, {
-    get(_, property) {
+    get(_, property: keyof Plug) {
         switch (property) {
+            case 'initialized':
+                return false;
+
             case 'plug':
                 return () => {
                     // no-op