From 1287db680d3da87f5f5e6fa869d198aeede663ed Mon Sep 17 00:00:00 2001
From: Jordan Ribbink <17958158+jribbink@users.noreply.github.com>
Date: Thu, 24 Oct 2024 16:38:17 -0700
Subject: [PATCH] Prevent major version bumps (#1991)

---
 .github/scripts/prevent-major-bumps.js | 60 ++++++++++++++++++++++++++
 .github/workflows/integrate.yml        | 15 +++++++
 2 files changed, 75 insertions(+)
 create mode 100644 .github/scripts/prevent-major-bumps.js

diff --git a/.github/scripts/prevent-major-bumps.js b/.github/scripts/prevent-major-bumps.js
new file mode 100644
index 000000000..0836ddad3
--- /dev/null
+++ b/.github/scripts/prevent-major-bumps.js
@@ -0,0 +1,60 @@
+/**
+ * DO NOT REMOVE ME UNLESS YOU KNOW WHAT YOU'RE DOING!!
+ */
+
+const {execSync} = require("child_process")
+const fs = require("fs")
+
+// Fetch the latest changes from the main branch
+execSync("git fetch origin master")
+
+const packageJsons = execSync("git ls-files 'packages/*/package.json'")
+  .toString()
+  .split("\n")
+  .filter(Boolean)
+
+// Assert that the package.json files exist
+if (packageJsons.length === 0) {
+  console.error("Error: No package.json files found.")
+  process.exit(1) // Fail the CI
+}
+
+for (const packageJson of packageJsons) {
+  // Get the current version from package.json
+  const newPackageJson = JSON.parse(fs.readFileSync(packageJson, "utf8"))
+  const newPackageName = newPackageJson.name
+  const newVersion = newPackageJson.version
+
+  // Get the version from the main branch (or latest release)
+  const prevPackageJson = JSON.parse(
+    execSync(`git show origin/master:${packageJson}`).toString()
+  )
+  const prevPackageName = prevPackageJson.name
+  const prevVersion = prevPackageJson.version
+
+  // Assert that the package names match
+  if (newPackageName !== prevPackageName) {
+    console.error(
+      `Error: Package name mismatch for ${newPackageName} (${prevPackageName} -> ${newPackageName}).`
+    )
+    process.exit(1) // Fail the CI
+  }
+
+  // Extract major, minor, and patch numbers
+  const newMajor = parseInt(newVersion.split(".")[0])
+  const prevMajor = parseInt(prevVersion.split(".")[0])
+
+  // Check if it's a major version bump
+  if (newMajor > prevMajor) {
+    console.error(
+      `Error: Major version bump detected for ${newPackageName} (${prevVersion} -> ${newVersion}).`
+    )
+    process.exit(1) // Fail the CI
+  }
+
+  console.log(
+    `Version bump allowed for ${newPackageName}: ${prevVersion} -> ${newVersion}`
+  )
+}
+
+process.exit(0) // Allow the CI to pass
diff --git a/.github/workflows/integrate.yml b/.github/workflows/integrate.yml
index cafe53565..f0c62eaa4 100644
--- a/.github/workflows/integrate.yml
+++ b/.github/workflows/integrate.yml
@@ -11,4 +11,19 @@ jobs:
       - uses: actions/setup-node@v1
         with:
           node-version: 18.x
+
+      # This step is VERY important.  Changesets has a bug where peer dependencies will cause major version bumps
+      # This script will prevent that from happening.  You must manually edit any changesets PRs which have this issue
+      # to correct the version bump.
+      #
+      # If you wish to allow a major version bump, you will have to override this check, but be VERY careful with it.
+      #
+      # See:
+      # https://github.com/changesets/changesets/pull/1132
+      # https://github.com/changesets/changesets/issues/1011
+      # https://github.com/changesets/changesets/issues/960
+      # https://github.com/changesets/changesets/issues/822
+      - name: Prevent Major Version Bumps
+        run: node ./.github/scripts/prevent-major-bumps.js
+
       - run: make ci