From b89832c03e4b9cdf1bcf3fe367b59717fa8fe8ad Mon Sep 17 00:00:00 2001
From: neverland <chenjiahan@youzan.com>
Date: Sat, 26 Dec 2020 15:09:57 +0800
Subject: [PATCH] fix(Stepper): change event emitted twice (#7820)

---
 src/stepper/index.js           |  5 +++++
 src/stepper/test/index.spec.js | 11 +++++------
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/stepper/index.js b/src/stepper/index.js
index 29183bdbd..ae60d071b 100644
--- a/src/stepper/index.js
+++ b/src/stepper/index.js
@@ -193,6 +193,11 @@ export default createComponent({
         event.target.value = formatted;
       }
 
+      // perfer number type
+      if (formatted === String(+formatted)) {
+        formatted = +formatted;
+      }
+
       this.emitChange(formatted);
     },
 
diff --git a/src/stepper/test/index.spec.js b/src/stepper/test/index.spec.js
index 389c73af6..89428318a 100644
--- a/src/stepper/test/index.spec.js
+++ b/src/stepper/test/index.spec.js
@@ -125,7 +125,7 @@ test('filter value during user input', () => {
   input.element.value = '2';
   input.trigger('input');
   expect(input.element.value).toEqual('2');
-  expect(wrapper.emitted('input')[1][0]).toEqual('2');
+  expect(wrapper.emitted('input')[1][0]).toEqual(2);
 });
 
 test('shoud watch value and format it', () => {
@@ -149,12 +149,11 @@ test('only allow interger', () => {
   });
 
   const input = wrapper.find('input');
-  input.element.value = '1.2';
+  input.element.value = '2.2';
   input.trigger('input');
   input.trigger('blur');
 
-  expect(wrapper.emitted('input')[0][0]).toEqual('1');
-  expect(wrapper.emitted('input')[1][0]).toEqual(1);
+  expect(wrapper.emitted('input')[0][0]).toEqual(2);
 });
 
 test('input invalid value and blur', () => {
@@ -246,8 +245,8 @@ test('async-change prop', () => {
   input.element.value = '3';
   input.trigger('input');
 
-  expect(wrapper.emitted('input')[1][0]).toEqual('3');
-  expect(wrapper.emitted('change')[1][0]).toEqual('3');
+  expect(wrapper.emitted('input')[1][0]).toEqual(3);
+  expect(wrapper.emitted('change')[1][0]).toEqual(3);
 });
 
 test('min value is 0', () => {