From ba3705c3b494bff82c281b16df5f92af625349a2 Mon Sep 17 00:00:00 2001
From: Kent Andersen <github@kent.cloud>
Date: Mon, 12 Oct 2020 21:20:22 +0200
Subject: [PATCH] Removed dependency to moment.js (#242)

---
 examples/detox/package.json |  2 +-
 package.json                |  1 -
 src/DatePickerAndroid.js    | 24 +++++++++++-------------
 yarn.lock                   |  5 -----
 4 files changed, 12 insertions(+), 20 deletions(-)

diff --git a/examples/detox/package.json b/examples/detox/package.json
index 06dd990..6d31c35 100644
--- a/examples/detox/package.json
+++ b/examples/detox/package.json
@@ -5,7 +5,7 @@
   "scripts": {
     "start": "react-native start",
     "postinstall": "yarn make-example-runnable",
-    "make-example-runnable": "(cd ../../ && npm i react react-native moment --no-save)",
+    "make-example-runnable": "(cd ../../ && npm i react react-native --no-save)",
     "build:ios": "detox build --configuration ios.debug",
     "build:android-debug": "detox build --configuration android.debug",
     "build:android-ci": "detox build --configuration android.ci",
diff --git a/package.json b/package.json
index e2dda87..5d2df07 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,6 @@
     "react-native-date-picker"
   ],
   "dependencies": {
-    "moment": "^2.22.1"
   },
   "devDependencies": {
     "@babel/preset-env": "^7.10.4",
diff --git a/src/DatePickerAndroid.js b/src/DatePickerAndroid.js
index 0032f9e..6884d75 100644
--- a/src/DatePickerAndroid.js
+++ b/src/DatePickerAndroid.js
@@ -1,6 +1,9 @@
 import React from 'react'
 import { StyleSheet, requireNativeComponent } from 'react-native'
-import moment from 'moment'
+
+function addMinutes(date, minutesToAdd) {
+  return new Date(date.valueOf() + minutesToAdd * 60 * 1000)
+}
 
 const NativeDatePicker = requireNativeComponent(
   `DatePickerManager`,
@@ -33,7 +36,7 @@ class DatePickerAndroid extends React.PureComponent {
   }
 
   _onChange = e => {
-    const jsDate = this._fromIsoWithTimeZoneOffset(e.nativeEvent.date).toDate()
+    const jsDate = this._fromIsoWithTimeZoneOffset(e.nativeEvent.date)
     this.props.onDateChange && this.props.onDateChange(jsDate)
     if (this.props.onDateStringChange) {
       this.props.onDateStringChange(e.nativeEvent.dateString)
@@ -50,22 +53,17 @@ class DatePickerAndroid extends React.PureComponent {
 
   _date = () => this._toIsoWithTimeZoneOffset(this.props.date)
 
-  _fromIsoWithTimeZoneOffset = date => {
-    if (this.props.timeZoneOffsetInMinutes === undefined) return moment(date)
-
-    return moment
-      .utc(date)
-      .subtract(this.props.timeZoneOffsetInMinutes, 'minutes')
+  _fromIsoWithTimeZoneOffset = timestamp => {
+    const date = new Date(timestamp)
+    if (this.props.timeZoneOffsetInMinutes === undefined) return date
+    return addMinutes(date, -this.props.timeZoneOffsetInMinutes)
   }
 
   _toIsoWithTimeZoneOffset = date => {
     if (this.props.timeZoneOffsetInMinutes === undefined)
-      return moment(date).toISOString()
+      return date.toISOString()
 
-    return moment
-      .utc(date)
-      .add(this.props.timeZoneOffsetInMinutes, 'minutes')
-      .toISOString()
+    return addMinutes(date, this.props.timeZoneOffsetInMinutes).toISOString()
   }
 }
 
diff --git a/yarn.lock b/yarn.lock
index 87c111c..8cf7c7a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3080,11 +3080,6 @@ mixin-deep@^1.2.0:
     for-in "^1.0.2"
     is-extendable "^1.0.1"
 
-moment@^2.22.1:
-  version "2.24.0"
-  resolved "https://registry.yarnpkg.com/moment/-/moment-2.24.0.tgz#0d055d53f5052aa653c9f6eb68bb5d12bf5c2b5b"
-  integrity sha512-bV7f+6l2QigeBBZSM/6yTNq4P2fNpSWj/0e7jQcy87A8e7o2nAfP/34/2ky5Vw4B9S446EtIhodAzkFCcR4dQg==
-
 ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"