From c1021cd5a84773170aa6e60b9e1bf0b7f8b2d836 Mon Sep 17 00:00:00 2001
From: Daniel Emery <danielremery@gmail.com>
Date: Fri, 11 Jan 2019 11:47:38 +1030
Subject: [PATCH] :hammer_and_wrench: debounce-handler handle no prop case

---
 packages/debounce-handler/src/index.js  | 14 +++++++++-----
 packages/debounce-handler/test/index.js |  9 +++++++++
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/packages/debounce-handler/src/index.js b/packages/debounce-handler/src/index.js
index f72dfd7..d32830c 100644
--- a/packages/debounce-handler/src/index.js
+++ b/packages/debounce-handler/src/index.js
@@ -9,11 +9,15 @@ const debounceHandler = (handlerName, delay, leadingCall) => (Target) => {
 
       const delayValue = typeof delay === 'function' ? delay(props) : delay
 
-      this.debouncedPropInvoke = debounce(
-        (...args) => this.props[handlerName](...args),
-        delayValue,
-        leadingCall
-      )
+      if (this.props[handlerName]) {
+        this.debouncedPropInvoke = debounce(
+          (...args) => this.props[handlerName](...args),
+          delayValue,
+          leadingCall
+        )
+      } else {
+        this.debouncedPropInvoke = () => {}
+      }
 
       this.handler = (e, ...rest) => {
         if (e && typeof e.persist === 'function') {
diff --git a/packages/debounce-handler/test/index.js b/packages/debounce-handler/test/index.js
index 384cacb..b07ff51 100644
--- a/packages/debounce-handler/test/index.js
+++ b/packages/debounce-handler/test/index.js
@@ -104,6 +104,15 @@ describe('debounceHandler', () => {
     expect(mockJustDebounce.mock.calls).toMatchSnapshot()
   })
 
+  it('should not error if prop is not present', () => {
+    const EnhancedTarget = debounceHandler('testHandler', 75, true)(Target)
+    const wrapper = mount(
+      <EnhancedTarget />
+    )
+    const testHandler = wrapper.find(Target).prop('testHandler')
+    testHandler()
+  })
+
   describe('display name', () => {
     const origNodeEnv = process.env.NODE_ENV