From db66598451f2bef637bd0acdb5098a09ae7e612a Mon Sep 17 00:00:00 2001
From: iamkun <kunhello@outlook.com>
Date: Wed, 11 Apr 2018 18:01:40 +0800
Subject: [PATCH 1/3] feat(api): add year(), month()

---
 src/index.js         |  8 ++++++++
 test/get-set.test.js | 11 +++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 test/get-set.test.js

diff --git a/src/index.js b/src/index.js
index 3fab13494..c2469439c 100644
--- a/src/index.js
+++ b/src/index.js
@@ -17,6 +17,14 @@ class Dayjs {
     return false
   }
 
+  year() {
+    return this.date.getFullYear()
+  }
+
+  month() {
+    return this.date.getMonth()
+  }
+
   unix() {
     const zonePad = this.utc ? this.date.getTimezoneOffset() * 60 * 1000 : 0
     return Math.floor((this.date.getTime() + zonePad) / 1000)
diff --git a/test/get-set.test.js b/test/get-set.test.js
new file mode 100644
index 000000000..5e7eb9163
--- /dev/null
+++ b/test/get-set.test.js
@@ -0,0 +1,11 @@
+import moment from 'moment'
+import dayjs from '../src'
+
+test('Year', () => {
+  expect(dayjs().year()).toBe(moment().year())
+})
+
+test('Month', () => {
+  expect(dayjs().month()).toBe(moment().month())
+})
+

From 6443b7fb75ebccbfaf4327d759125e76e0f194c5 Mon Sep 17 00:00:00 2001
From: iamkun <kunhello@outlook.com>
Date: Wed, 11 Apr 2018 18:15:38 +0800
Subject: [PATCH 2/3] feat(startOf): add startOf()

---
 src/index.js            | 12 ++++++++++++
 test/manipulate.test.js | 15 +++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 test/manipulate.test.js

diff --git a/src/index.js b/src/index.js
index c2469439c..6e54e4054 100644
--- a/src/index.js
+++ b/src/index.js
@@ -7,6 +7,7 @@ class Dayjs {
 
   parseConfig(config) {
     if (!config) return new Date()
+    if (config instanceof Date) return config
     if (/^(\d){8}$/.test(config)) {
       this.utc = true
       const y = config.substr(0, 4)
@@ -33,6 +34,17 @@ class Dayjs {
   toString() {
     return this.date.toUTCString()
   }
+
+  startOf(arg) {
+    switch (arg) {
+      case 'year':
+        return new Dayjs(new Date(this.year(), 0, 1))
+      case 'month':
+        return new Dayjs(new Date(this.year(), this.month(), 1))
+      default:
+        return this
+    }
+  }
 }
 
 export default config => (
diff --git a/test/manipulate.test.js b/test/manipulate.test.js
new file mode 100644
index 000000000..b1c2f4873
--- /dev/null
+++ b/test/manipulate.test.js
@@ -0,0 +1,15 @@
+import moment from 'moment'
+import dayjs from '../src'
+
+test('StartOfYear', () => {
+  expect(dayjs().startOf('year').unix()).toBe(moment().startOf('year').unix())
+})
+
+test('StartOfMonth', () => {
+  expect(dayjs().startOf('month').unix()).toBe(moment().startOf('month').unix())
+})
+
+test('StartOfOther', () => {
+  expect(dayjs().startOf('otherString').unix()).toBe(moment().startOf('otherString').unix())
+})
+

From 4665d0a3999094c0c9921d02a360eedcd473d576 Mon Sep 17 00:00:00 2001
From: iamkun <kunhello@outlook.com>
Date: Wed, 11 Apr 2018 18:26:12 +0800
Subject: [PATCH 3/3] fix(parse): parse other string throw Invalid date

---
 src/index.js            | 2 +-
 test/manipulate.test.js | 6 +++---
 test/parse.test.js      | 5 +++++
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/index.js b/src/index.js
index 6e54e4054..390ade6cf 100644
--- a/src/index.js
+++ b/src/index.js
@@ -15,7 +15,7 @@ class Dayjs {
       const d = config.substr(6, 2)
       return `${y}-${m}-${d}`
     }
-    return false
+    return config
   }
 
   year() {
diff --git a/test/manipulate.test.js b/test/manipulate.test.js
index b1c2f4873..c367e8c09 100644
--- a/test/manipulate.test.js
+++ b/test/manipulate.test.js
@@ -1,15 +1,15 @@
 import moment from 'moment'
 import dayjs from '../src'
 
-test('StartOfYear', () => {
+test('StartOf Year', () => {
   expect(dayjs().startOf('year').unix()).toBe(moment().startOf('year').unix())
 })
 
-test('StartOfMonth', () => {
+test('StartOf Month', () => {
   expect(dayjs().startOf('month').unix()).toBe(moment().startOf('month').unix())
 })
 
-test('StartOfOther', () => {
+test('StartOf Other', () => {
   expect(dayjs().startOf('otherString').unix()).toBe(moment().startOf('otherString').unix())
 })
 
diff --git a/test/parse.test.js b/test/parse.test.js
index 5e0bd1ba5..1f2670204 100644
--- a/test/parse.test.js
+++ b/test/parse.test.js
@@ -8,3 +8,8 @@ test('Now', () => {
 test('String 20130208', () => {
   expect(dayjs('20130208').unix()).toBe(moment('20130208').unix())
 })
+
+test('String Other', () => {
+  global.console.warn = jest.genMockFunction()// moment.js otherString will throw warn
+  expect(dayjs('otherString').toString().toLowerCase()).toBe(moment('otherString').toString().toLowerCase())
+})