From e32f56174a70703faf88f9aac3bead4609b21eca Mon Sep 17 00:00:00 2001
From: Drini Cami <cdrini@gmail.com>
Date: Tue, 18 Feb 2020 13:21:10 -0500
Subject: [PATCH] Log GitHub compare link to aid in CHANGELOG summary on
 version bump (#193)

---
 package.json          | 2 +-
 scripts/preversion.js | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)
 create mode 100644 scripts/preversion.js

diff --git a/package.json b/package.json
index 5800ca808..64acf589b 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "testPathIgnorePatterns": ["tests/e2e"]
   },
   "scripts": {
-    "preversion": "npm run test",
+    "preversion": "npm run test && node scripts/preversion.js",
     "version": "node scripts/version.js",
     "postversion": "node scripts/postversion.js",
     "build": "npx webpack && npx sass ./src/css/BookReader.scss > ./BookReader/BookReader.css",
diff --git a/scripts/preversion.js b/scripts/preversion.js
new file mode 100644
index 000000000..4f1aa1cfc
--- /dev/null
+++ b/scripts/preversion.js
@@ -0,0 +1,4 @@
+const { version: OLD_VERSION } = require('../package.json');
+const GITHUB_DIFF_URL = `https://github.com/internetarchive/bookreader/compare/v${OLD_VERSION}...master`
+
+console.log(`Here's what's changed since the last version: ${GITHUB_DIFF_URL}`);