From 9b4fcfde35b39693894be1821b6c7222fac98657 Mon Sep 17 00:00:00 2001
From: pvmeijel <pvmeijel@maxedy.com>
Date: Sat, 11 Feb 2023 07:43:30 +0100
Subject: [PATCH] fix: Added .valueOf method to Duration class (#2226)

---
 src/plugin/duration/index.js | 4 ++++
 test/plugin/duration.test.js | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/src/plugin/duration/index.js b/src/plugin/duration/index.js
index 10ebb4ca2..5d4cc6aa8 100644
--- a/src/plugin/duration/index.js
+++ b/src/plugin/duration/index.js
@@ -235,6 +235,10 @@ class Duration {
       .fromNow(!withSuffix)
   }
 
+  valueOf() {
+    return this.asMilliseconds()
+  }
+
   milliseconds() { return this.get('milliseconds') }
   asMilliseconds() { return this.as('milliseconds') }
   seconds() { return this.get('seconds') }
diff --git a/test/plugin/duration.test.js b/test/plugin/duration.test.js
index 2e804691c..8a7e0e6cd 100644
--- a/test/plugin/duration.test.js
+++ b/test/plugin/duration.test.js
@@ -67,6 +67,9 @@ describe('Creating', () => {
       ms: -1
     }).toISOString()).toBe('-PT0.001S')
   })
+  it('convert to milliseconds', () => {
+    expect(+dayjs.duration(100)).toBe(100)
+  })
 })
 
 describe('Parse ISO string', () => {