From b2c142465252998361c5844a31a08de0001467ea Mon Sep 17 00:00:00 2001
From: Benny Powers <web@bennypowers.com>
Date: Thu, 14 Mar 2024 14:42:41 +0200
Subject: [PATCH 1/3] chore: changeset validating github action

---
 .github/workflows/validate-pr.yml | 25 +++++++++++++
 scripts/validate-prs.js           | 59 +++++++++++++++++++++++++++++++
 2 files changed, 84 insertions(+)
 create mode 100644 .github/workflows/validate-pr.yml
 create mode 100644 scripts/validate-prs.js

diff --git a/.github/workflows/validate-pr.yml b/.github/workflows/validate-pr.yml
new file mode 100644
index 0000000000..3bb682f067
--- /dev/null
+++ b/.github/workflows/validate-pr.yml
@@ -0,0 +1,25 @@
+name: Validate PRs
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+      - edited
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+      - run: npm i semantic-release @changesets/read --prefer-offline
+      - uses: actions/github-script@v7
+        with:
+          script: |
+            const { validate } = await import('${{ github.workspace }}/scripts/validate-prs.js');
+            await validate({ context });
diff --git a/scripts/validate-prs.js b/scripts/validate-prs.js
new file mode 100644
index 0000000000..8e887dd226
--- /dev/null
+++ b/scripts/validate-prs.js
@@ -0,0 +1,59 @@
+/* eslint-env node */
+import { default as read } from '@changesets/read';
+import semanticRelease from 'semantic-release';
+
+/** @typedef {'major'|'minor'|'patch'} ReleaseType */
+
+async function getReleaseType(title, mergeType) {
+  if (mergeType === 'rebase') {
+    const result = await semanticRelease({
+      dryRun: true,
+      branches: ['main'],
+    }) ?? {};
+    /** @type {ReleaseType} */
+    const type = result?.nextRelease?.type;
+    return type;
+  } else {
+    const { commitType, bang } = title.match(/(?<commitType>feat|fix|chore|docs|style).*(?<bang>!)/)?.groups ?? {};
+    if (bang) {
+      return 'major';
+    } else {
+      switch (commitType) {
+        case 'feat': return 'minor';
+        case 'fix': return 'patch';
+      }
+    }
+  }
+}
+
+export async function validate({ context }) {
+  const { base, title, auto_merge: autoMerge } = context.payload.pull_request;
+
+  if (base.ref.startsWith('staging/')) {
+    return true;
+  }
+
+  const type = await getReleaseType(title, autoMerge?.merge_method) ?? null;
+  const sets = await read(process.cwd());
+
+  /** @type {ReleaseType} */
+  const release = sets.reduce((greatest, type) => {
+    switch (greatest) {
+      case null:
+      case 'major':
+        return greatest;
+      case 'minor':
+        return type === 'major' ? type : greatest;
+      case 'patch':
+        return (type === 'major' || type === 'minor') ? type : greatest;
+    }
+  }, null);
+
+  if (!release && type?.match(/m(aj|in)or/)) {
+    throw new Error(`PR conventional commit title has type (${type}) but no changesets were detected.`);
+  }
+
+  if (type !== release) {
+    throw new Error(`PR conventional commit title type (${type}) does not match release type (${release}).`);
+  }
+}

From 96d483e9282e490fa69b98d0703e087420994f9f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Benny=20Powers=20-=20=D7=A2=D7=9D=20=D7=99=D7=A9=D7=A8?=
 =?UTF-8?q?=D7=90=D7=9C=20=D7=97=D7=99!?=
 <bennypowers@users.noreply.github.com>
Date: Fri, 15 Mar 2024 09:24:06 +0200
Subject: [PATCH 2/3] test: Create metal-birds-share.md

---
 .changeset/metal-birds-share.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/metal-birds-share.md

diff --git a/.changeset/metal-birds-share.md b/.changeset/metal-birds-share.md
new file mode 100644
index 0000000000..5dde4075a1
--- /dev/null
+++ b/.changeset/metal-birds-share.md
@@ -0,0 +1,5 @@
+---
+"@rhds/elements": major
+---
+DELETE THIS FILE BEFORE MERGING
+chore: changeset validating github action

From 5ac26cdd0a81ed47f643ff65db86b01f9daa3f85 Mon Sep 17 00:00:00 2001
From: Benny Powers <web@bennypowers.com>
Date: Wed, 8 May 2024 12:45:31 +0300
Subject: [PATCH 3/3] style: lint

---
 scripts/validate-prs.js | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/scripts/validate-prs.js b/scripts/validate-prs.js
index 8e887dd226..2ad2fa5b21 100644
--- a/scripts/validate-prs.js
+++ b/scripts/validate-prs.js
@@ -1,9 +1,17 @@
-/* eslint-env node */
 import { default as read } from '@changesets/read';
 import semanticRelease from 'semantic-release';
 
 /** @typedef {'major'|'minor'|'patch'} ReleaseType */
 
+/**
+ * named capture group 1 `commitType`:
+ * > Either `feat`, `fix`, `chore`, `docs`, or `style`
+ * **ANY** (_>= 0x_)
+ * named capture group 2 `bang`:
+ * > `!`
+ */
+const COMMIT_TYPE_RE = /(?<commitType>feat|fix|chore|docs|style).*(?<bang>!)/;
+
 async function getReleaseType(title, mergeType) {
   if (mergeType === 'rebase') {
     const result = await semanticRelease({
@@ -14,7 +22,7 @@ async function getReleaseType(title, mergeType) {
     const type = result?.nextRelease?.type;
     return type;
   } else {
-    const { commitType, bang } = title.match(/(?<commitType>feat|fix|chore|docs|style).*(?<bang>!)/)?.groups ?? {};
+    const { commitType, bang } = title.match(COMMIT_TYPE_RE)?.groups ?? {};
     if (bang) {
       return 'major';
     } else {