v2.0.0-next.0

* Version Packages (next)

* fmt

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Mateusz Burzyński <mateuszburzynski@gmail.com>

.changeset/eight-clocks-pull.md

@@ -0,0 +1,5 @@
+---
+"@changesets/action": minor
+---
+
+Add new `/select-mode`, `/version`, and `/publish` sub-actions to better control version and publish steps

.changeset/eighty-doors-swim.md

@@ -0,0 +1,5 @@
+---
+"@changesets/action": major
+---
+
+Removed compatibility support for old Changesets v1.

.changeset/lemon-turtles-itch.md

@@ -0,0 +1,5 @@
+---
+"@changesets/action": major
+---
+
+Remove `cwd` option for `changesets/action`. Use the step `working-directory` option instead to change the directory.

.changeset/pre.json

@@ -0,0 +1,8 @@
+{
+  "mode": "pre",
+  "tag": "next",
+  "initialVersions": {
+    "@changesets/action": "1.9.0"
+  },
+  "changesets": ["eight-clocks-pull", "eighty-doors-swim", "lemon-turtles-itch"]
+}

.github/CODEOWNERS

@@ -1,5 +1,5 @@
-/.github/workflows/** @Andarist @emmatown
+/.github/workflows/** @Andarist @bluwy @emmatown
-/action.yml @Andarist @emmatown
+/action.yml @Andarist @bluwy @emmatown
-/scripts/bump.ts @Andarist @emmatown
+/scripts/bump.ts @Andarist @bluwy @emmatown
-/scripts/release.ts @Andarist @emmatown
+/scripts/release.ts @Andarist @bluwy @emmatown
-/scripts/release-pr.ts @Andarist @emmatown
+/scripts/release-pr.ts @Andarist @bluwy @emmatown

.github/dependabot.yml

@@ -1,13 +1,32 @@
-# To get started with Dependabot version updates, you'll need to specify which
-# package ecosystems to update and where the package manifests are located.
-# Please see the documentation for all configuration options:
-# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
-
 version: 2
 updates:
-  - package-ecosystem: "npm" # See documentation for possible values
+  - package-ecosystem: "npm"
-    directory: "/" # Location of package manifests
+    directory: "/"
     schedule:
-      interval: "weekly"
+      interval: "monthly"
     cooldown:
       default-days: 7
+    open-pull-requests-limit: 10
+    versioning-strategy: increase
+    groups:
+      production-dependencies:
+        dependency-type: "production"
+        update-types:
+          - minor
+          - patch
+      development-dependencies:
+        dependency-type: "development"
+        update-types:
+          - minor
+          - patch
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    cooldown:
+      default-days: 7
+    open-pull-requests-limit: 5
+    groups:
+      github-actions:
+        patterns:
+          - "*"

.github/workflows/ci.yml

@@ -7,6 +7,9 @@ on:
   merge_group:
     branches:
       - main
+      - next
+      # merge group rulesets don't allow wildcards so in settings each maintenance branch needs to be added separately
+      - "maintenance/v*" # branch rulesets don't support v[0-9]+
 
 permissions:
   contents: read
@@ -24,12 +27,12 @@ jobs:
       security-events: write # allow writing security events
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false
 
       - name: Run zizmor
-        uses: zizmorcore/zizmor-action@b1d7e1fb5de872772f31590499237e7cce841e8e # v0.5.3
+        uses: zizmorcore/zizmor-action@5f14fd08f7cf1cb1609c1e344975f152c7ee938d # v0.5.6
         with:
           persona: pedantic
           annotations: true
@@ -37,12 +40,11 @@ jobs:
 
   test:
     name: Test
-    timeout-minutes: 20
     runs-on: ubuntu-latest
-
+    timeout-minutes: 20
     steps:
       - name: Check out repo
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false
 
@@ -53,12 +55,11 @@ jobs:
 
   typecheck:
     name: Typecheck
-    timeout-minutes: 20
     runs-on: ubuntu-latest
-
+    timeout-minutes: 20
     steps:
       - name: Check out repo
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false
 
@@ -67,11 +68,26 @@ jobs:
       - name: Typecheck
         run: pnpm typecheck
 
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    steps:
+      - name: Check out repo
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+        with:
+          persist-credentials: false
+
+      - uses: ./.github/actions/ci-setup
+
+      - name: Format
+        run: pnpm format
+
   ci-ok:
     name: CI OK
     runs-on: ubuntu-latest
     if: always()
-    needs: [lint-workflows, test, typecheck]
+    needs: [lint-workflows, test, typecheck, lint]
     steps:
       - name: Exit with error if some jobs are not successful
         run: exit 1

.github/workflows/publish.yml

@@ -4,6 +4,8 @@ on:
   push:
     branches:
       - main
+      - next
+      - "maintenance/v*" # branch rulesets don't support v[0-9]+
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -16,16 +18,15 @@ jobs:
   version:
     name: Version
     runs-on: ubuntu-latest
+    environment: version
     timeout-minutes: 20
     outputs:
       hasChangesets: ${{ steps.changesets.outputs.hasChangesets }}
     permissions:
-      contents: write # to create release (changesets/action)
+      contents: read # to check out repo (actions/checkout)
-      issues: write # to post issue comments (changesets/action)
-      pull-requests: write # to create pull request (changesets/action)
     steps:
       - name: Check out repo
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false
 
@@ -36,10 +37,19 @@ jobs:
       - name: Build
         run: pnpm build
 
+      - uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
+        id: app-token
+        with:
+          client-id: ${{ vars.APP_CLIENT_ID }}
+          private-key: ${{ secrets.APP_PRIVATE_KEY }}
+          permission-contents: write # to create version commits (changesets/action)
+          permission-pull-requests: write # to create pull request (changesets/action)
+
       - name: Create or update release pull request
         id: changesets
         uses: ./
         with:
+          github-token: ${{ steps.app-token.outputs.token }}
           version: pnpm bump
 
   publish:
@@ -52,18 +62,17 @@ jobs:
     permissions:
       contents: write # to create release and have it authored by github-actions (changesets/action)
     steps:
-      - uses: actions/create-github-app-token@1b10c78c7865c340bc4f6099eb2f838309f1e8c3 # v3.1.1
+      - uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
         id: app-token
         with:
           client-id: ${{ vars.APP_CLIENT_ID }}
           private-key: ${{ secrets.APP_PRIVATE_KEY }}
+          permission-contents: write # to bypass branch and tag protection rules (release.ts)
 
       - name: Check out repo
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
-          persist-credentials: true
+          persist-credentials: false
-          # we need this token to bypass the branch and tag protection rules
-          token: ${{ steps.app-token.outputs.token }}
 
       - uses: ./.github/actions/ci-setup
         with:
@@ -75,4 +84,5 @@ jobs:
       - name: Publish to marketplace
         uses: ./
         with:
+          github-token: ${{ steps.app-token.outputs.token }}
           publish: pnpm release

.github/workflows/release-pr.yml

@@ -122,8 +122,15 @@ jobs:
       pull-requests: write # to comment on the pull request with the release result (changesets/action)
 
     steps:
+      - uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
+        id: app-token
+        with:
+          client-id: ${{ vars.APP_CLIENT_ID }}
+          private-key: ${{ secrets.APP_PRIVATE_KEY }}
+          permission-contents: write # to push the release snapshot branch (release-pr.ts)
+
       - name: Check out repo
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false
 
@@ -173,6 +180,8 @@ jobs:
 
       - name: Release snapshot version
         run: pnpm release:pr
+        env:
+          GITHUB_TOKEN: ${{ steps.app-token.outputs.token }}
 
       - name: Add success reaction
         run: gh api "/repos/$GH_REPO/issues/comments/$COMMENT_ID/reactions" -f content='rocket'

CHANGELOG.md

@@ -1,5 +1,35 @@
 # @changesets/action
 
+## 2.0.0-next.0
+
+### Major Changes
+
+- [#657](https://github.com/changesets/action/pull/657) [`4f718b5`](https://github.com/changesets/action/commit/4f718b5921490b1efeb015a81abb6a4633892851) Thanks [@Andarist](https://github.com/Andarist)! - Removed compatibility support for old Changesets v1.
+
+- [#659](https://github.com/changesets/action/pull/659) [`5649ff4`](https://github.com/changesets/action/commit/5649ff41b8eb1b7a281011e45df781c6d4628fd0) Thanks [@bluwy](https://github.com/bluwy)! - Remove `cwd` option for `changesets/action`. Use the step `working-directory` option instead to change the directory.
+
+### Minor Changes
+
+- [#656](https://github.com/changesets/action/pull/656) [`a12d90d`](https://github.com/changesets/action/commit/a12d90de8394e63c952622b2fd3f98c8729c48b0) Thanks [@bluwy](https://github.com/bluwy)! - Add new `/select-mode`, `/version`, and `/publish` sub-actions to better control version and publish steps
+
+## 1.9.0
+
+### Minor Changes
+
+- [#636](https://github.com/changesets/action/pull/636) [`b072bcc`](https://github.com/changesets/action/commit/b072bccc4c664a373c42168eed9139dce1e003b1) Thanks [@bluwy](https://github.com/bluwy)! - Add a new `@changesets/action/pr-comment` sub-action to comment on PRs
+
+- [#625](https://github.com/changesets/action/pull/625) [`8795eee`](https://github.com/changesets/action/commit/8795eee5eee884e887d352ac673a515ffe35aaa6) Thanks [@bluwy](https://github.com/bluwy)! - Add a new `@changesets/action/pr-status` sub-action to generate the changeset status comment for PRs as an alternative to the [Changesets Bot](https://github.com/apps/changeset-bot).
+
+### Patch Changes
+
+- [#535](https://github.com/changesets/action/pull/535) [`34f64f6`](https://github.com/changesets/action/commit/34f64f6e2e1e47ddc183f174aa27c197aa47f520) Thanks [@Andarist](https://github.com/Andarist)! - Fixed an issue with GitHub releases not being created for successfully published packages when _some_ packages failed to be published to the registry.
+
+- [#632](https://github.com/changesets/action/pull/632) [`1d54b9e`](https://github.com/changesets/action/commit/1d54b9e660e435237accbcae0b4581af3be641b4) Thanks [@bluwy](https://github.com/bluwy)! - Simplify internal implementation to get changelog entries for a package version
+
+- [#629](https://github.com/changesets/action/pull/629) [`e0c90aa`](https://github.com/changesets/action/commit/e0c90aa7fbd0cc26931a679c5abe9bbc0deb0b50) Thanks [@bluwy](https://github.com/bluwy)! - Fix custom version and publish command argument parsing
+
+- [#645](https://github.com/changesets/action/pull/645) [`f9585d9`](https://github.com/changesets/action/commit/f9585d966a9c7d2f668b97199990de6f885823cf) Thanks [@Andarist](https://github.com/Andarist)! - Improved force-push handling when using `commitMode: "github-api"` so updating an existing branch no longer temporarily resets the target branch to the base commit, avoiding cases where GitHub closes open pull requests during the update. This should remove a possibility of a GitHub state race that caused the force-pushed PRs not being reopened.
+
 ## 1.8.0
 
 ### Minor Changes

README.md

@@ -1,7 +1,15 @@
 # Changesets Release Action
 
+> [!IMPORTANT]
+> This is the development branch for `changesets/action` v2 compatible with Changesets v3. For the v1 code compatible with Changesets v2, check out the [`maintenance/v1`](https://github.com/changesets/action/tree/maintenance/v1) branch.
+
 This action for [Changesets](https://github.com/changesets/changesets) creates a pull request with all of the package versions updated and changelogs updated and when there are new changesets on [your configured `baseBranch`](https://github.com/changesets/changesets/blob/main/docs/config-file-options.md#basebranch-git-branch-name), the PR will be updated. When you're ready, you can merge the pull request and you can either publish the packages to npm manually or setup the action to do it for you.
 
+There are also sub-actions hosted in this repository. Check out their respective READMEs for more details:
+
+- [pr-status](./pr-status/README.md): Generate changeset status in PRs.
+- [pr-comment](./pr-comment/README.md): Comment on PRs.
+
 ## Usage
 
 ### Inputs

action.yml

@@ -14,9 +14,6 @@ inputs:
   version:
     description: "The command to update version, edit CHANGELOG, read and delete changesets. Default to `changeset version` if not provided"
     required: false
-  cwd:
-    description: Sets the cwd for the node process. Default to `process.cwd()`
-    required: false
   commit:
     description: |
       The commit message. Default to `Version Packages`

dist/index.js

@@ -0,0 +1,2 @@
+import{c as e,d as t,l as n,o as r,s as i,u as a}from"./github-B-FmP-qI.js";import{i as o,n as s,r as c,t as l}from"./run-CVDXZtwd.js";import{r as u}from"./utils-CZUacPOo.js";import{t as d}from"./readChangesetState-Otq6gfkp.js";import f from"node:fs/promises";import"node:path";const p=t=>e(t)||void 0;(async()=>{let m=process.env.GITHUB_TOKEN||e(`github-token`);if(!m){a(`Please add the GITHUB_TOKEN to the changesets action`);return}let h=process.cwd(),g=c(m),_=p(`commitMode`)??`git-cli`,v=p(`prDraft`);if(_!==`git-cli`&&_!==`github-api`){a(`Invalid commit mode: ${_}`);return}if(v!==void 0&&v!==`always`&&v!==`create`){a(`Invalid prDraft: ${v}`);return}let y=new o({octokit:_===`github-api`?g:void 0,cwd:h});i(`setupGitUser`)&&(n(`setting git user`),await y.setupUser()),n(`setting GitHub credentials`),await f.writeFile(`${process.env.HOME}/.netrc`,`machine github.com\nlogin github-actions[bot]\npassword ${m}`);let{changesets:b}=await d(h),x=e(`publish`),S=b.length!==0,C=b.some(e=>e.releases.length>0),w=!!x;switch(t(`published`,`false`),t(`publishedPackages`,`[]`),t(`hasChangesets`,String(S)),!0){case!S&&!w:n(`No changesets present or were removed by merging release PR. Not publishing because no publish script found.`);return;case!S&&w:{if(n(`No changesets found. Attempting to publish any unpublished packages to npm`),process.env.NPM_TOKEN){let e=`${process.env.HOME}/.npmrc`;await u(e)?(n(`Found existing user .npmrc file`),(await f.readFile(e,`utf8`)).split(`
+`).find(e=>/^\s*\/\/registry\.npmjs\.org\/:[_-]authToken=/i.test(e))?n(`Found existing auth token for the npm registry in the user .npmrc file`):(n(`Didn't find existing auth token for the npm registry in the user .npmrc file, creating one`),await f.appendFile(e,`\n//registry.npmjs.org/:_authToken=${process.env.NPM_TOKEN}\n`))):(n(`No user .npmrc file found, creating one with NPM_TOKEN used as auth token`),await f.writeFile(e,`//registry.npmjs.org/:_authToken=${process.env.NPM_TOKEN}\n`))}else process.env.ACTIONS_ID_TOKEN_REQUEST_TOKEN&&process.env.ACTIONS_ID_TOKEN_REQUEST_URL?n(`No NPM_TOKEN found, but OIDC is available - using npm trusted publishing`):n(`No NPM_TOKEN or OIDC available - assuming npm is already authenticated`);let e=await l({script:x,githubToken:m,git:y,octokit:g,createGithubReleases:i(`createGithubReleases`),cwd:h});e.published&&(t(`published`,`true`),t(`publishedPackages`,JSON.stringify(e.publishedPackages))),e.exitCode!==0&&(r(`Publish command exited with code ${e.exitCode}${e.published?`, but some packages were published: ${e.publishedPackages.map(e=>`${e.name}@${e.version}`).join(`, `)}`:``}`),process.exit(e.exitCode));return}case S&&!C:n(`All changesets are empty; not creating PR`);return;case S:{let e=c(m),{pullRequestNumber:n}=await s({script:p(`version`),githubToken:m,git:y,octokit:e,cwd:h,prTitle:p(`title`),commitMessage:p(`commit`),hasPublishScript:w,prDraft:v,branch:p(`branch`)});t(`pullRequestNumber`,String(n));return}}})().catch(e=>{r(e),a(e.message)});export{};

dist/pack.js

@@ -0,0 +1 @@
+import{c as e,d as t,u as n}from"./github-B-FmP-qI.js";import{n as r,t as i,u as a}from"./utils-CZUacPOo.js";import o from"node:fs/promises";import s from"node:path";import c from"node:os";try{await l()}catch(e){n(e.message)}async function l(){let n=e(`publish-plan-artifact-id`),r=process.cwd(),i=process.env.RUNNER_TEMP??await o.realpath(c.tmpdir()),l=s.join(i,`changeset-pack-${Date.now()}`);await u(r,{outDir:l,publishPlanPath:n?await d(i,Number(n)):void 0});let p=await a.uploadArtifact(`changeset-pack-${Date.now()}`,await f(l),l,{retentionDays:30});if(p.id===void 0)throw Error(`Packed artifact upload did not return an artifact id`);t(`pack-dir-artifact-id`,String(p.id))}async function u(e,t){let n=[`pack`,`--out-dir`,t.outDir];t.publishPlanPath&&n.push(`--from-plan`,t.publishPlanPath),await r(n,{cwd:e,env:process.env})}async function d(e,t){let n=await i(e,t,`changeset-publish-plan`);return s.join(n,`publish-plan.json`)}async function f(e){let t=await o.readdir(e,{withFileTypes:!0});return(await Promise.all(t.map(async t=>{let n=s.join(e,t.name);return t.isDirectory()?f(n):[n]}))).flat()}export{};

dist/pr-comment.js

@@ -0,0 +1 @@
+import{c as e,d as t,l as n,n as r,t as i,u as a}from"./github-B-FmP-qI.js";try{await o()}catch(e){a(e.message)}async function o(){let a=i.payload.pull_request;if(!a)throw Error("This action should only be run on `pull_request_target` or `pull_request` events");let o=e(`github-token`,{required:!0}),c=e(`body`,{required:!0}),l=e(`update-id`),u=l?s(l):null,d=u?`${u}\n\n${c}`:c,f={repo:a.base.repo.name,owner:a.base.repo.owner.login,issue_number:a.number,body:d},p=r(o),m;u&&(n(`Checking for existing comment...`),m=await p.rest.issues.listComments({repo:a.base.repo.name,owner:a.base.repo.owner.login,issue_number:a.number}).then(e=>e.data.find(e=>e.body?.includes(u))?.id)),m?(n(`Updating existing comment (id: ${m})...`),await p.rest.issues.updateComment({...f,comment_id:m}),t(`comment-id`,m)):(n(`Creating new comment...`),t(`comment-id`,(await p.rest.issues.createComment(f)).data.id)),n(`Done!`)}function s(e){let t=`changesets-action-pr-comment`;return t===e?`<!-- ${t} -->`:`<!-- ${t}:${e} -->`}export{};

dist/publish.js

@@ -0,0 +1 @@
+import{c as e,d as t,s as n,u as r}from"./github-B-FmP-qI.js";import{i,r as a,t as o}from"./run-CVDXZtwd.js";import{t as s}from"./utils-CZUacPOo.js";import c from"node:fs/promises";import l from"node:os";try{await u()}catch(e){r(e.message)}async function u(){let r=e(`github-token`,{required:!0}),u=e(`script`),d=e(`pack-dir-artifact-id`),f=n(`create-github-releases`),p=process.cwd(),m=a(r),h=await o({script:u,githubToken:r,git:new i({octokit:m,cwd:p}),octokit:m,createGithubReleases:f,cwd:p,fromPackDir:d?await s(process.env.RUNNER_TEMP??await c.realpath(l.tmpdir()),Number(d),`changeset-pack`):void 0});if(h.published?(t(`published`,`true`),t(`published-packages`,JSON.stringify(h.publishedPackages))):t(`published`,`false`),h.exitCode!==0)throw Error(`Publish command exited with code ${h.exitCode}${h.published?`, but some packages were published: ${h.publishedPackages.map(e=>`${e.name}@${e.version}`).join(`, `)}`:``}`)}export{};

dist/readChangesetState-Otq6gfkp.js

@@ -0,0 +1 @@
+import{o as e,t}from"./changesets-read.esm-Cr0YoPBA.js";async function n(n=process.cwd()){let r=await e(n),i=await t(n);if(r!==void 0&&r.mode===`pre`){let e=new Set(r.changesets);return{preState:r,changesets:i.filter(t=>!e.has(t.id))}}return{preState:void 0,changesets:i}}export{n as t};

dist/select-mode.js

@@ -0,0 +1 @@
+import{d as e,u as t}from"./github-B-FmP-qI.js";import{n,u as r}from"./utils-CZUacPOo.js";import{t as i}from"./readChangesetState-Otq6gfkp.js";import a from"node:fs/promises";import o from"node:path";import s from"node:os";try{await c()}catch(e){t(e.message)}async function c(){let t=await l();if(e(`mode`,t.mode),t.mode===`publish`){let n=await r.uploadArtifact(o.basename(t.publishPlanPath,`.json`),[t.publishPlanPath],o.dirname(t.publishPlanPath),{skipArchive:!0,retentionDays:30});if(n.id===void 0)throw Error(`Publish plan artifact upload did not return an artifact id`);e(`publish-plan-artifact-id`,String(n.id))}}async function l(){let{changesets:e}=await i();if(e.length>0)return e.some(e=>e.releases.length>0)?{mode:`version`}:{mode:`none`};let t=process.cwd(),r=o.join(process.env.RUNNER_TEMP??await a.realpath(s.tmpdir()),`changeset-publish-plan-${Date.now()}.json`);return await n([`publish-plan`,`--output`,r],{cwd:t,env:process.env}),(await u(r)).length===0?{mode:`none`}:{mode:`publish`,publishPlanPath:r}}async function u(e){let t;try{t=await a.readFile(e,`utf8`)}catch(t){throw Error(`Failed to read publish plan at ${e}`,{cause:t})}let n;try{n=JSON.parse(t)}catch(t){throw Error(`Failed to parse publish plan at ${e}`,{cause:t})}if(typeof n!=`object`||!n||!(`version`in n)||typeof n.version!=`number`||!(`plan`in n)||!Array.isArray(n.plan))throw Error(`Invalid publish plan at ${e}: expected { version: number; plan: unknown[] }`);return n.plan}export{};

dist/version.js

@@ -0,0 +1 @@
+import{c as e,d as t,l as n,s as r,u as i}from"./github-B-FmP-qI.js";import{i as a,n as o,r as s}from"./run-CVDXZtwd.js";try{await c()}catch(e){i(e.message)}async function c(){let i=e(`github-token`,{required:!0}),c=e(`script`),l=e(`commit-message`,{required:!0}),u=e(`pr-title`,{required:!0}),d=e(`pr-draft`)||void 0,f=e(`pr-base-branch`),p=e(`commit-mode`)||`git-cli`,m=r(`setup-git-user`);if(d!==void 0&&d!==`always`&&d!==`create`)throw Error(`Invalid pr-draft input: ${d}`);let h=process.cwd(),g=s(i),_=new a({octokit:p===`github-api`?g:void 0,cwd:h});m&&(n(`setting git user`),await _.setupUser());let{pullRequestNumber:v}=await o({script:c,githubToken:i,git:_,octokit:g,cwd:h,prTitle:u,commitMessage:l,hasPublishScript:!0,prDraft:d,branch:f});t(`pr-number`,String(v))}export{};

pack/README.md

@@ -0,0 +1,3 @@
+# changesets/action/pack
+
+TODO

pack/action.yml

@@ -0,0 +1,15 @@
+name: Changesets - Pack
+description: Pack publishable packages into tarballs
+runs:
+  using: node24
+  main: ../dist/pack.js
+inputs:
+  publish-plan-artifact-id:
+    description: "Artifact id for a publish plan generated by the select-mode subaction"
+    required: false
+outputs:
+  pack-dir-artifact-id:
+    description: "Artifact id for the packed output directory"
+branding:
+  icon: package
+  color: blue

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@changesets/action",
-  "version": "1.8.0",
+  "version": "2.0.0-next.0",
   "license": "MIT",
   "type": "module",
   "main": "dist/index.js",
@@ -17,33 +17,35 @@
     "release:pr": "node --experimental-strip-types ./scripts/release-pr.ts"
   },
   "dependencies": {
+    "@actions/artifact": "^6.2.1",
     "@actions/core": "^3.0.1",
     "@actions/exec": "^3.0.0",
     "@actions/github": "^9.1.1",
-    "@changesets/ghcommit": "^2.0.1",
+    "@changesets/get-release-plan": "^4.0.16",
+    "@changesets/ghcommit": "^2.1.1",
+    "@changesets/git": "^3.0.4",
     "@changesets/pre": "^2.0.2",
-    "@changesets/read": "^0.6.5",
+    "@changesets/read": "^0.6.7",
     "@manypkg/get-packages": "^1.1.3",
     "@octokit/core": "^7.0.6",
     "@octokit/plugin-throttling": "^11.0.3",
-    "@types/mdast": "^3.0.0",
+    "human-id": "^4.1.3",
-    "mdast-util-to-string": "^1.0.6",
+    "markdown-table": "^3.0.4",
-    "remark-parse": "^7.0.1",
+    "semver": "^7.8.1",
-    "remark-stringify": "^7.0.3",
+    "tinyexec": "^1.2.4"
-    "semver": "^7.5.3",
-    "unified": "^8.3.2"
   },
   "devDependencies": {
-    "@changesets/changelog-github": "^0.5.1",
+    "@changesets/changelog-github": "^0.7.0",
-    "@changesets/cli": "^2.29.3",
+    "@changesets/cli": "^2.31.0",
     "@changesets/types": "^6.1.0",
     "@changesets/write": "^0.4.0",
-    "@types/node": "^24.12.2",
+    "@tsconfig/node24": "^24.0.4",
-    "@types/semver": "^7.5.0",
+    "@types/node": "^24.12.4",
+    "@types/semver": "^7.7.1",
     "fs-fixture": "^2.13.0",
     "oxfmt": "^0.48.0",
     "rolldown": "^1.0.1",
-    "typescript": "^5.8.3",
+    "typescript": "^6.0.3",
     "vitest": "^4.1.6"
   },
   "engines": {

pnpm-workspace.yaml

@@ -3,15 +3,11 @@ dedupePeers: true
 dedupePeerDependents: true
 minimumReleaseAge: 10080
 minimumReleaseAgeExclude:
-  - '@oxc-project/*'
+  - "@changesets/ghcommit@2.1.1"
-  - '@rolldown/*'
-  - rolldown@1.0.1
-  - vite@8.0.13
-  - vitest@4.1.6
 
 overrides:
-  lightningcss: '-' # we do not bundle any css
+  lightningcss: "-" # we do not bundle any css
-  postcss: '-' # we do not bundle any css
+  postcss: "-" # we do not bundle any css
 
 shellEmulator: true
 trustPolicy: no-downgrade

pr-comment/README.md

@@ -0,0 +1,52 @@
+# @changesets/action/pr-comment
+
+A simple GitHub Action to comment on PRs aimed to complement [`@changesets/action/pr-status`](../pr-status/README.md).
+
+This action is intentionally simple without advanced features. Check out other actions if so, such as [mshick/add-pr-comment](https://github.com/marketplace/actions/add-pr-comment) and [peter-evans/create-or-update-comment](https://github.com/marketplace/actions/create-or-update-comment).
+
+See the [action metadata](action.yml) for details on the inputs and outputs.
+
+## Example setup
+
+```yaml
+name: PR Comment
+
+on:
+  pull_request:
+
+jobs:
+  pr-comment:
+    runs-on: ubuntu-slim
+    permissions:
+      pull-requests: write # to create and update comments on PRs
+    steps:
+      - uses: changesets/action/pr-comment@v1
+        with:
+          body: Hello world!
+```
+
+When called repeatedly, the action will update the comment it created by default. If you use this action to create different types of comments, pass an `update-id` value to differentiate them.
+
+```yaml
+jobs:
+  pr-comment:
+    # ...
+    steps:
+      - uses: changesets/action/pr-comment@v1
+        with:
+          body: Hello world!
+          update-id: my-tag
+```
+
+If you want to always create new comments, pass an empty value to `update-id`.
+
+```yaml
+jobs:
+  pr-comment:
+    # ...
+    steps:
+      - uses: changesets/action/pr-comment@v1
+        with:
+          body: Hello world!
+          update-id: ""
+```

pr-comment/action.yml

@@ -0,0 +1,25 @@
+name: Changesets - PR Comment
+description: A simple GitHub Action to comment on PRs
+runs:
+  using: node24
+  main: ../dist/pr-comment.js
+inputs:
+  github-token:
+    description: "The GitHub token to use for authentication. Defaults to the GitHub-provided token."
+    required: false
+    default: ${{ github.token }}
+  body:
+    description: "The comment body to post on the PR."
+    required: true
+  update-id:
+    description: >
+      By default, the action will create and update a comment with this id. Pass a different id to
+      create and update a new comment, or pass an empty string to disable updating comments.
+    required: false
+    default: "changesets-action-pr-comment"
+outputs:
+  comment-id:
+    description: "The comment id of the comment that was created or updated."
+branding:
+  icon: message-circle
+  color: blue

pr-status/README.md

@@ -0,0 +1,71 @@
+# changesets/action/pr-status
+
+This action generates the changesets status in PRs, e.g. whether it has changeset files and which packages will be released if the PR is merged.
+
+It requires the repo to be checked out, and automatically fetches the PR head ref into a temporary detached worktree in order to infer the changed files and packages.
+
+See the [action metadata](action.yml) for details on the inputs and outputs.
+
+> [!CAUTION]
+> **This action uses `pull_request_target` by default to support PRs from forks.**
+>
+> **Do not run untrusted code** when using the `pull_request_target` event.
+>
+> The example below only **_checks out_** and **_reads_** code, and does not **_execute_** any code from the fork.
+>
+> Read more about the `pull_request_target` event in the [GitHub documentation](https://docs.github.com/en/actions/reference/workflows-and-actions/events-that-trigger-workflows#pull_request_target).
+
+You can also use the [`pull_request`](https://docs.github.com/en/actions/reference/workflows-and-actions/events-that-trigger-workflows#pull_request) event if you prefer to lock permissions down and not run for PRs from forks. Make sure to add an if check to prevent the action from failing in fork PRs:
+
+```yaml
+jobs:
+  pr-status:
+    if: github.event.pull_request.head.repo.full_name == github.repository
+    # ...
+```
+
+You can also use the [Changesets Bot](https://github.com/apps/changeset-bot) if you don't want an extra action in your repo, or are worried about the `pull_request_target` event.
+
+## Example setup
+
+```yaml
+# .github/workflows/comment-changesets-pr-status.yml
+name: Comment Changesets status in PRs
+
+on:
+  pull_request_target:
+
+permissions: {} # require explicitly stating all permissions in each job
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+jobs:
+  pr-status:
+    runs-on: ubuntu-slim
+    permissions:
+      contents: read # to check out files in the repo
+    outputs:
+      comment-body: ${{ steps.pr-status.outputs.comment-body }}
+    steps:
+      - name: Check out repo
+        uses: actions/checkout@v6
+
+      - name: Generate status
+        id: pr-status
+        uses: changesets/action/pr-status@v1
+
+  pr-comment:
+    needs: pr-status
+    runs-on: ubuntu-slim
+    permissions:
+      pull-requests: write # to create and update comments on PRs
+    steps:
+      - name: Comment on PR
+        uses: changesets/action/pr-comment@v1
+        with:
+          body: ${{ needs.pr-status.outputs.comment-body }}
+```
+
+The workflow uses [`@changesets/action/pr-comment`](../pr-comment/README.md), which is a simple GitHub Action to comment on PRs.

pr-status/action.yml

@@ -0,0 +1,12 @@
+name: Changesets - PR Status
+description: Generate the changesets status in PRs
+runs:
+  using: node24
+  main: ../dist/pr-status.js
+inputs: {}
+outputs:
+  comment-body:
+    description: The generated comment body to present the changesets status in PRs.
+branding:
+  icon: package
+  color: blue

publish/README.md

@@ -0,0 +1,3 @@
+# changesets/action/publish
+
+TODO

publish/action.yml

@@ -0,0 +1,29 @@
+name: Changesets - Publish
+description: Publish packages to npm
+runs:
+  using: node24
+  main: ../dist/publish.js
+inputs:
+  github-token:
+    description: "The GitHub token to use for authentication. Defaults to the GitHub-provided token."
+    required: false
+    default: ${{ github.token }}
+  script:
+    description: "The command to use to publish packages"
+    required: false
+  pack-dir-artifact-id:
+    description: "Artifact id for packed publish output generated by the pack subaction"
+    required: false
+  create-github-releases:
+    description: "Whether to create Github releases after publish"
+    required: false
+    default: true
+outputs:
+  published:
+    description: "A boolean value to indicate whether a publishing has happened or not"
+  published-packages:
+    description: >
+      A JSON array to present the published packages. The format is `[{"name": "@xx/xx", "version": "1.2.0"}, {"name": "@xx/xy", "version": "0.8.9"}]`
+branding:
+  icon: package
+  color: blue

rolldown.config.js

@@ -1,13 +1,21 @@
-import { defineConfig } from 'rolldown'
+import { defineConfig } from "rolldown";
 
 export default defineConfig({
-  input: 'src/index.ts',
+  input: {
+    index: "src/index.ts",
+    pack: "src/pack/index.ts",
+    "pr-status": "src/pr-status/index.ts",
+    "pr-comment": "src/pr-comment/index.ts",
+    "select-mode": "src/select-mode/index.ts",
+    version: "src/version/index.ts",
+    publish: "src/publish/index.ts",
+  },
   output: {
-    dir: 'dist',
+    dir: "dist",
-    format: 'esm',
+    format: "esm",
     cleanDir: true,
     minify: true,
     comments: false,
   },
-  platform: 'node',
+  platform: "node",
-})
+});

scripts/release-pr.ts

@@ -1,9 +1,21 @@
+import { Buffer } from "node:buffer";
 import path from "node:path";
 import { exec } from "@actions/exec";
 import pkgJson from "../package.json" with { type: "json" };
 
 const tag = `v${pkgJson.version}`;
 const releaseLine = "pr-release";
+const githubToken = process.env.GITHUB_TOKEN;
+if (!githubToken) {
+  throw new Error("GITHUB_TOKEN is required");
+}
+const basic = Buffer.from(`x-access-token:${githubToken}`).toString("base64");
+const gitEnv = {
+  ...process.env,
+  GIT_CONFIG_COUNT: "1",
+  GIT_CONFIG_KEY_0: "http.https://github.com/.extraheader",
+  GIT_CONFIG_VALUE_0: `AUTHORIZATION: basic ${basic}`,
+};
 
 process.chdir(path.join(import.meta.dirname, ".."));
 
@@ -11,9 +23,10 @@ await exec("git", ["checkout", "--detach"]);
 await exec("git", ["add", "--force", "dist"]);
 await exec("git", ["commit", "-m", tag]);
 
-await exec("git", [
+await exec(
-  "push",
+  "git",
-  "--force",
+  ["push", "--force", "origin", `HEAD:refs/heads/${releaseLine}`],
-  "origin",
+  {
-  `HEAD:refs/heads/${releaseLine}`,
+    env: gitEnv,
-]);
+  },
+);

scripts/release.ts

@@ -1,9 +1,22 @@
+import { Buffer } from "node:buffer";
 import path from "node:path";
 import { exec, getExecOutput } from "@actions/exec";
 import pkgJson from "../package.json" with { type: "json" };
 
 const tag = `v${pkgJson.version}`;
 const releaseLine = `v${pkgJson.version.split(".")[0]}`;
+const isPrerelease = pkgJson.version.includes("-");
+const githubToken = process.env.GITHUB_TOKEN;
+if (!githubToken) {
+  throw new Error("GITHUB_TOKEN is required");
+}
+const basic = Buffer.from(`x-access-token:${githubToken}`).toString("base64");
+const gitEnv = {
+  ...process.env,
+  GIT_CONFIG_COUNT: "1",
+  GIT_CONFIG_KEY_0: "http.https://github.com/.extraheader",
+  GIT_CONFIG_VALUE_0: `AUTHORIZATION: basic ${basic}`,
+};
 
 process.chdir(path.join(import.meta.dirname, ".."));
 
@@ -31,11 +44,24 @@ process.chdir(path.join(import.meta.dirname, ".."));
 
   await exec("changeset", ["tag"]);
 
-  await exec("git", [
+  if (isPrerelease) {
+    await exec("git", ["push", "origin", `refs/tags/${tag}`], {
+      env: gitEnv,
+    });
+    return;
+  }
+
+  await exec(
+    "git",
+    [
       "push",
       "--force",
       "--follow-tags",
       "origin",
       `HEAD:refs/heads/${releaseLine}`,
-  ]);
+    ],
+    {
+      env: gitEnv,
+    },
+  );
 })();

select-mode/README.md

@@ -0,0 +1,3 @@
+# changesets/action/select-mode
+
+TODO

select-mode/action.yml

@@ -0,0 +1,14 @@
+name: Changesets - Select Mode
+description: Whether to version or publish in the current repo state
+runs:
+  using: node24
+  main: ../dist/select-mode.js
+inputs: {}
+outputs:
+  mode:
+    description: "The mode to use for the current repo state: 'version', 'publish', or 'none'."
+  publish-plan-artifact-id:
+    description: "Artifact id for the generated publish plan when mode is `publish`"
+branding:
+  icon: package
+  color: blue

src/__snapshots__/run.test.ts.snap

@@ -12,8 +12,7 @@ exports[`version > creates a draft PR when prDraft is "create" 1`] = `
 
 ### Minor Changes
 
--   Awesome feature
+- Awesome feature",
-",
     "draft": true,
     "head": "changeset-release/some-branch",
     "owner": "changesets",
@@ -41,13 +40,11 @@ exports[`version > creates simple PR 1`] = `
 
 - Updated dependencies
   - changesets-dev-simple-project-pkg-b@1.1.0
-
 ## changesets-dev-simple-project-pkg-b@1.1.0
 
 ### Minor Changes
 
--   Awesome feature
+- Awesome feature",
-",
     "draft": false,
     "head": "changeset-release/some-branch",
     "owner": "changesets",
@@ -111,8 +108,7 @@ exports[`version > doesn't include ignored package that got a dependency update
 
 ### Minor Changes
 
--   Awesome feature
+- Awesome feature",
-",
     "draft": false,
     "head": "changeset-release/some-branch",
     "owner": "changesets",
@@ -134,8 +130,7 @@ exports[`version > only includes bumped packages in the PR body 1`] = `
 
 ### Minor Changes
 
--   Awesome feature
+- Awesome feature",
-",
     "draft": false,
     "head": "changeset-release/some-branch",
     "owner": "changesets",
@@ -187,8 +182,7 @@ exports[`version > updates an existing PR via GraphQL and converts it to draft w
 
 ### Minor Changes
 
--   Awesome feature
+- Awesome feature",
-",
     "pullRequestId": "PR_kwDOA",
     "title": "Version Packages",
   },
@@ -228,8 +222,7 @@ exports[`version > updates an existing PR via GraphQL without converting it to d
 
 ### Minor Changes
 
--   Awesome feature
+- Awesome feature",
-",
     "pullRequestId": "PR_kwDOA",
     "title": "Version Packages",
   },

src/__snapshots__/utils.test.ts.snap

@@ -31,8 +31,7 @@ exports[`it works 1`] = `
 
 - [81dc0be5](https://github.com/keystonejs/keystone-5/commit/81dc0be5):
 
-    -   Update dependencies
+  - Update dependencies"
-"
 `;
 
 exports[`it works 2`] = `
@@ -40,6 +39,5 @@ exports[`it works 2`] = `
 
 - [19fe6c1b](https://github.com/keystonejs/keystone-5/commit/19fe6c1b):
 
-    Move frontmatter in docs into comments
+  Move frontmatter in docs into comments"
-"
 `;

src/index.ts

@@ -19,8 +19,8 @@ const getOptionalInput = (name: string) => core.getInput(name) || undefined;
     return;
   }
 
-  const cwd = path.resolve(getOptionalInput("cwd") ?? "");
+  // If the user needs to change the cwd, set `working-directory` in the step instead
-  core.info(`using resolved cwd: ${cwd}`);
+  const cwd = process.cwd();
 
   const octokit = setupOctokit(githubToken);
   const commitMode = getOptionalInput("commitMode") ?? "git-cli";
@@ -136,6 +136,19 @@ const getOptionalInput = (name: string) => core.getInput(name) || undefined;
           JSON.stringify(result.publishedPackages),
         );
       }
+
+      if (result.exitCode !== 0) {
+        core.error(
+          `Publish command exited with code ${result.exitCode}${
+            result.published
+              ? `, but some packages were published: ${result.publishedPackages
+                  .map((p) => `${p.name}@${p.version}`)
+                  .join(", ")}`
+              : ""
+          }`,
+        );
+        process.exit(result.exitCode);
+      }
       return;
     }
     case hasChangesets && !hasNonEmptyChangesets:

src/pack/index.ts

@@ -0,0 +1,82 @@
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import artifact from "@actions/artifact";
+import * as core from "@actions/core";
+import { downloadArtifact, execChangesetsCli } from "../utils.ts";
+
+try {
+  await main();
+} catch (err) {
+  core.setFailed((err as Error).message);
+}
+
+async function main() {
+  const publishPlanArtifactId = core.getInput("publish-plan-artifact-id");
+
+  // If the user needs to change the cwd, set `working-directory` in the step instead
+  const cwd = process.cwd();
+  const tmpDir = process.env.RUNNER_TEMP ?? (await fs.realpath(os.tmpdir()));
+  const outDir = path.join(tmpDir, `changeset-pack-${Date.now()}`);
+
+  await pack(cwd, {
+    outDir,
+    publishPlanPath: publishPlanArtifactId
+      ? await downloadPublishPlanArtifact(tmpDir, Number(publishPlanArtifactId))
+      : undefined,
+  });
+
+  const packDirArtifact = await artifact.uploadArtifact(
+    `changeset-pack-${Date.now()}`,
+    await getFiles(outDir),
+    outDir,
+    {
+      retentionDays: 30,
+    },
+  );
+  if (packDirArtifact.id === undefined) {
+    throw new Error("Packed artifact upload did not return an artifact id");
+  }
+  core.setOutput("pack-dir-artifact-id", String(packDirArtifact.id));
+}
+
+async function pack(
+  cwd: string,
+  args: {
+    outDir: string;
+    publishPlanPath?: string;
+  },
+) {
+  const cliArgs = ["pack", "--out-dir", args.outDir];
+  if (args.publishPlanPath) {
+    cliArgs.push("--from-plan", args.publishPlanPath);
+  }
+
+  await execChangesetsCli(cliArgs, {
+    cwd,
+    env: process.env,
+  });
+}
+
+async function downloadPublishPlanArtifact(tmpDir: string, artifactId: number) {
+  const downloadPath = await downloadArtifact(
+    tmpDir,
+    artifactId,
+    "changeset-publish-plan",
+  );
+  return path.join(downloadPath, "publish-plan.json");
+}
+
+async function getFiles(dir: string): Promise<string[]> {
+  const entries = await fs.readdir(dir, { withFileTypes: true });
+  const files = await Promise.all(
+    entries.map(async (entry) => {
+      const entryPath = path.join(dir, entry.name);
+      if (entry.isDirectory()) {
+        return getFiles(entryPath);
+      }
+      return [entryPath];
+    }),
+  );
+  return files.flat();
+}

src/pr-comment/index.ts

@@ -0,0 +1,77 @@
+import * as core from "@actions/core";
+import * as github from "@actions/github";
+
+type Octokit = ReturnType<typeof github.getOctokit>;
+type CreateCommentParams = NonNullable<
+  Parameters<Octokit["rest"]["issues"]["createComment"]>[0]
+>;
+type UpdateCommentParams = NonNullable<
+  Parameters<Octokit["rest"]["issues"]["updateComment"]>[0]
+>;
+
+try {
+  await main();
+} catch (err) {
+  core.setFailed((err as Error).message);
+}
+
+async function main() {
+  const context = github.context.payload.pull_request;
+  if (!context) {
+    throw new Error(
+      "This action should only be run on `pull_request_target` or `pull_request` events",
+    );
+  }
+
+  const githubToken = core.getInput("github-token", { required: true });
+  const body = core.getInput("body", { required: true });
+  const updateId = core.getInput("update-id");
+
+  const commentMarker = updateId ? getCommentMarker(updateId) : null;
+  const commentBody = commentMarker ? `${commentMarker}\n\n${body}` : body;
+  const commentParam: CreateCommentParams | UpdateCommentParams = {
+    repo: context.base.repo.name,
+    owner: context.base.repo.owner.login,
+    issue_number: context.number,
+    body: commentBody,
+  };
+
+  const octokit = github.getOctokit(githubToken);
+
+  let existingCommentId: number | undefined;
+  if (commentMarker) {
+    core.info("Checking for existing comment...");
+    existingCommentId = await octokit.rest.issues
+      .listComments({
+        repo: context.base.repo.name,
+        owner: context.base.repo.owner.login,
+        issue_number: context.number,
+      })
+      .then((res) => {
+        const comment = res.data.find((c) => c.body?.includes(commentMarker));
+        return comment?.id;
+      });
+  }
+
+  if (existingCommentId) {
+    core.info(`Updating existing comment (id: ${existingCommentId})...`);
+    await octokit.rest.issues.updateComment({
+      ...commentParam,
+      comment_id: existingCommentId,
+    });
+    core.setOutput("comment-id", existingCommentId);
+  } else {
+    core.info("Creating new comment...");
+    const result = await octokit.rest.issues.createComment(commentParam);
+    core.setOutput("comment-id", result.data.id);
+  }
+
+  core.info("Done!");
+}
+
+function getCommentMarker(updateId: string) {
+  const prefix = "changesets-action-pr-comment";
+  return prefix === updateId
+    ? `<!-- ${prefix} -->`
+    : `<!-- ${prefix}:${updateId} -->`;
+}

src/pr-status/index.ts

@@ -0,0 +1,23 @@
+import * as core from "@actions/core";
+import * as github from "@actions/github";
+import { getCommentMessage } from "./message.ts";
+
+try {
+  await main();
+} catch (err) {
+  core.setFailed((err as Error).message);
+}
+
+async function main() {
+  const context = github.context.payload.pull_request;
+  if (!context) {
+    throw new Error(
+      "This action should only be run on `pull_request_target` or `pull_request` events",
+    );
+  }
+
+  core.info("Creating comment message...");
+  const commentBody = await getCommentMessage(context);
+  core.setOutput("comment-body", commentBody);
+  core.info("Done!");
+}

src/pr-status/message.ts

@@ -0,0 +1,120 @@
+import * as github from "@actions/github";
+import getReleasePlan from "@changesets/get-release-plan";
+import type {
+  ComprehensiveRelease,
+  ReleasePlan,
+  VersionType,
+} from "@changesets/types";
+import { markdownTable } from "markdown-table";
+import {
+  getNewChangesetTemplateContent,
+  getNewChangesetUrl,
+} from "./template.ts";
+import { getPullRequestWorktree } from "./worktree.ts";
+
+type PullRequestContext = NonNullable<
+  typeof github.context.payload.pull_request
+>;
+
+export async function getCommentMessage(context: PullRequestContext) {
+  await using worktree = await getPullRequestWorktree(context);
+
+  const releasePlan = await getReleasePlan(worktree.cwd, worktree.baseRef);
+  const templateContent = await getNewChangesetTemplateContent(
+    worktree.cwd,
+    worktree.baseRef,
+    context.title,
+  );
+
+  const newChangesetUrl = getNewChangesetUrl(
+    context.head.repo.html_url,
+    context.head.ref,
+    templateContent,
+  );
+
+  if (releasePlan.changesets.length > 0) {
+    return getApproveMessage(context.head.sha, newChangesetUrl, releasePlan);
+  } else {
+    return getAbsentMessage(context.head.sha, newChangesetUrl, releasePlan);
+  }
+}
+
+function getApproveMessage(
+  commitSha: string,
+  newChangesetUrl: string,
+  releasePlan: ReleasePlan,
+) {
+  return `\
+### 🦋 Changeset detected
+
+Latest commit: ${commitSha}
+
+**The changes in this PR will be included in the next version bump.**
+
+${getReleasePlanMessage(releasePlan)}
+
+Not sure what this means? [Click here to learn what changesets are](https://github.com/changesets/changesets/blob/main/docs/adding-a-changeset.md).
+
+[Click here if you're a maintainer who wants to add another changeset to this PR](${newChangesetUrl})`;
+}
+
+function getAbsentMessage(
+  commitSha: string,
+  newChangesetUrl: string,
+  releasePlan: ReleasePlan,
+) {
+  return `\
+### ⚠️ No Changeset found
+
+Latest commit: ${commitSha}
+
+Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. **If these changes should result in a version bump, you need to add a changeset.**
+
+${getReleasePlanMessage(releasePlan)}
+
+[Click here to learn what changesets are, and how to add one](https://github.com/changesets/changesets/blob/main/docs/adding-a-changeset.md).
+
+[Click here if you're a maintainer who wants to add a changeset to this PR](${newChangesetUrl})`;
+}
+
+function getReleasePlanMessage(releasePlan: ReleasePlan) {
+  const publishableReleases = releasePlan.releases.filter(
+    (r) => r.type !== "none",
+  ) as (ComprehensiveRelease & { type: Exclude<VersionType, "none"> })[];
+
+  const table = markdownTable([
+    ["Name", "Type"],
+    ...publishableReleases.map((release) => {
+      return [
+        release.name,
+        {
+          major: "Major",
+          minor: "Minor",
+          patch: "Patch",
+        }[release.type],
+      ];
+    }),
+  ]);
+
+  let summary = "This PR includes ";
+  if (releasePlan.changesets.length === 0) {
+    summary += "no changesets";
+  } else {
+    summary += `changesets to release ${publishableReleases.length} package`;
+    if (publishableReleases.length !== 1) {
+      summary += "s";
+    }
+  }
+
+  return `\
+<details>
+<summary>${summary}</summary>
+
+${
+  publishableReleases.length > 0
+    ? table
+    : "When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types"
+}
+
+</details>`;
+}

src/pr-status/template.ts

@@ -0,0 +1,30 @@
+import { getChangedPackagesSinceRef } from "@changesets/git";
+import { humanId } from "human-id";
+
+export function getNewChangesetUrl(
+  headRepoUrl: string,
+  headRef: string,
+  templateContent: string,
+) {
+  const fileName = humanId({ separator: "-", capitalize: false });
+  return `${headRepoUrl}/new/${headRef}?filename=.changeset/${fileName}.md&value=${encodeURIComponent(templateContent)}`;
+}
+
+export async function getNewChangesetTemplateContent(
+  cwd: string,
+  baseRef: string,
+  prTitle: string,
+) {
+  const changedPackages = await getChangedPackagesSinceRef({
+    cwd,
+    ref: baseRef,
+  });
+
+  return `\
+---
+${changedPackages.map((p) => `"${p.packageJson.name}": patch`).join("\n")}
+---
+
+${prTitle}
+`;
+}

src/pr-status/worktree.test.ts

@@ -0,0 +1,148 @@
+import { pathToFileURL } from "node:url";
+import type * as github from "@actions/github";
+import getReleasePlan from "@changesets/get-release-plan";
+import { createFixture } from "fs-fixture";
+import { exec } from "tinyexec";
+import { describe, expect, it } from "vitest";
+import { getPullRequestWorktree } from "./worktree.ts";
+
+type PullRequestContext = NonNullable<
+  typeof github.context.payload.pull_request
+>;
+
+async function git(cwd: string, args: string[]) {
+  const output = await exec("git", args, {
+    nodeOptions: { cwd },
+    throwOnError: true,
+  });
+  return output.stdout.trim();
+}
+
+describe("getPullRequestWorktree", () => {
+  it("fetches a PR branch into a detached worktree and keeps the main checkout untouched", async () => {
+    // Local source repo
+    await using sourceRepoFixture = await createFixture({
+      ".changeset/config.json": JSON.stringify({}),
+      "package.json": JSON.stringify({
+        name: "repo",
+        private: true,
+        workspaces: ["packages/*"],
+      }),
+      "packages/pkg-a/package.json": JSON.stringify({
+        name: "pkg-a",
+        version: "1.0.0",
+      }),
+    });
+    const sourceRepo = sourceRepoFixture.path;
+    await git(sourceRepo, ["init", "-b", "main"]);
+    await git(sourceRepo, ["config", "user.name", "Test User"]);
+    await git(sourceRepo, ["config", "user.email", "test@example.com"]);
+    await git(sourceRepo, ["add", "."]);
+    await git(sourceRepo, ["commit", "-m", "base"]);
+
+    // Simulate remote bare git server
+    await using originBareFixture = await createFixture();
+    const originBare = originBareFixture.path;
+    await git(originBare, ["clone", "--bare", sourceRepo, originBare]);
+
+    // Simulate checkout PR in github action
+    await using checkoutRepoFixture = await createFixture();
+    const checkoutRepo = checkoutRepoFixture.path;
+    await git(checkoutRepo, [
+      "clone",
+      "--depth",
+      "1",
+      "--branch",
+      "main",
+      pathToFileURL(originBare).toString(),
+      checkoutRepo,
+    ]);
+
+    // Simulate remote fork bare git server
+    await using forkBareFixture = await createFixture();
+    const forkBare = forkBareFixture.path;
+    await git(forkBare, ["clone", "--bare", originBare, forkBare]);
+
+    await using forkRepoFixture = await createFixture();
+    const forkRepo = forkRepoFixture.path;
+    await git(forkRepo, [
+      "clone",
+      "--depth",
+      "1",
+      "--branch",
+      "main",
+      pathToFileURL(forkBare).toString(),
+      forkRepo,
+    ]);
+    await git(forkRepo, ["config", "user.name", "Test User"]);
+    await git(forkRepo, ["config", "user.email", "test@example.com"]);
+    await git(forkRepo, ["checkout", "-b", "feature"]);
+
+    await forkRepoFixture.mkdir("packages/pkg-a/src");
+    await forkRepoFixture.writeFile(
+      "packages/pkg-a/src/index.ts",
+      "export const value = 1;\n",
+    );
+    await forkRepoFixture.writeFile(
+      ".changeset/add-pkg-a.md",
+      `\
+---
+"pkg-a": patch
+---
+
+Add pkg-a
+`,
+    );
+
+    await git(forkRepo, ["add", "."]);
+    await git(forkRepo, ["commit", "-m", "feature"]);
+    await git(forkRepo, ["push", "origin", "feature"]);
+
+    // Run tests
+    const originalHead = await git(checkoutRepo, ["rev-parse", "HEAD"]);
+    const context = {
+      number: 123,
+      base: {
+        ref: "main",
+        repo: {
+          clone_url: pathToFileURL(originBare).toString(),
+        },
+      },
+      head: {
+        ref: "feature",
+        repo: {
+          clone_url: pathToFileURL(forkBare).toString(),
+        },
+      },
+    };
+
+    await using worktree = await getPullRequestWorktree(
+      context satisfies PullRequestContext as PullRequestContext,
+      checkoutRepo,
+    );
+
+    const releasePlan = await getReleasePlan(worktree.cwd, worktree.baseRef);
+
+    const currentHead = await git(worktree.cwd, ["rev-parse", "HEAD"]);
+    expect(currentHead).not.toBe(originalHead);
+
+    const currentBranch = await git(worktree.cwd, ["branch", "--show-current"]);
+    expect(currentBranch).toBe("");
+
+    const releases = releasePlan.releases.map((release) => ({
+      name: release.name,
+      type: release.type,
+      newVersion: release.newVersion,
+    }));
+    expect(releases).toEqual([
+      {
+        name: "pkg-a",
+        type: "patch",
+        newVersion: "1.0.1",
+      },
+    ]);
+
+    expect(await git(checkoutRepo, ["rev-parse", "HEAD"])).toBe(originalHead);
+    expect(await git(checkoutRepo, ["branch", "--show-current"])).toBe("main");
+  });
+});

src/pr-status/worktree.ts

@@ -0,0 +1,165 @@
+import { randomUUID } from "node:crypto";
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import type * as github from "@actions/github";
+import { isRepoShallow } from "@changesets/git";
+import { exec } from "tinyexec";
+
+type PullRequestContext = NonNullable<
+  typeof github.context.payload.pull_request
+>;
+
+type WorktreeInfo = {
+  baseRef: string;
+  cwd: string;
+};
+
+type TinyexecOptions = Parameters<typeof exec>[2];
+
+function git(cwd: string, args: string[], opts: TinyexecOptions = {}) {
+  return exec("git", args, {
+    nodeOptions: { cwd, ...opts.nodeOptions },
+    throwOnError: true,
+    ...opts,
+  });
+}
+
+interface Ref {
+  fetchSource: string;
+  local: string;
+  remote: string;
+}
+
+function getRefs(context: PullRequestContext): Record<"base" | "head", Ref> {
+  const suffix = `${context.number}-${randomUUID()}`;
+  return {
+    base: {
+      fetchSource: "origin",
+      local: `refs/changesets-action-pr-status/base/${suffix}`,
+      remote: `refs/heads/${context.base.ref}`,
+    },
+    head: {
+      fetchSource: context.head.repo.clone_url,
+      local: `refs/changesets-action-pr-status/head/${suffix}`,
+      remote: `refs/heads/${context.head.ref}`,
+    },
+  };
+}
+
+async function deepenRef(cwd: string, ref: Ref, deepenBy: number) {
+  await git(cwd, [
+    "fetch",
+    "--no-tags",
+    `--deepen=${deepenBy}`,
+    ref.fetchSource,
+    `${ref.remote}:${ref.local}`,
+  ]);
+}
+
+async function ensureMergeBase(args: {
+  cwd: string;
+  refs: ReturnType<typeof getRefs>;
+  deepenBy?: number;
+}) {
+  const { cwd, refs, deepenBy = 50 } = args;
+
+  while (true) {
+    const mergeBase = await git(cwd, ["merge-base", refs.base.local, "HEAD"], {
+      throwOnError: false,
+    });
+
+    if (mergeBase.exitCode === 0) {
+      return mergeBase.stdout.trim();
+    }
+
+    if (!(await isRepoShallow({ cwd }))) {
+      throw new Error(
+        `Failed to find merge base between "${refs.base.local}" and HEAD, and the repository is no longer shallow.`,
+      );
+    }
+
+    await deepenRef(cwd, refs.base, deepenBy);
+    await deepenRef(cwd, refs.head, deepenBy);
+  }
+}
+
+async function mkdtemp(prefix: string) {
+  const dir = await fs.mkdtemp(path.join(os.tmpdir(), prefix));
+
+  return {
+    dir,
+    async [Symbol.asyncDispose]() {
+      await fs.rm(dir, { recursive: true, force: true });
+    },
+  };
+}
+
+async function tempRef(cwd: string, ref: Ref) {
+  await git(cwd, [
+    "fetch",
+    "--no-tags",
+    "--depth=1",
+    ref.fetchSource,
+    `${ref.remote}:${ref.local}`,
+  ]);
+  return {
+    async [Symbol.asyncDispose]() {
+      await git(cwd, ["update-ref", "-d", ref.local], { throwOnError: false });
+    },
+  };
+}
+
+async function tempWorktree(cwd: string, dir: string, ref: Ref) {
+  await git(cwd, ["worktree", "add", "--detach", dir, ref.local]);
+
+  return {
+    async [Symbol.asyncDispose]() {
+      await git(cwd, ["worktree", "remove", "--force", dir], {
+        throwOnError: false,
+      });
+    },
+  };
+}
+
+type WithAsyncDispose<T> = T & {
+  [Symbol.asyncDispose](): Promise<void>;
+};
+
+function moveDisposable<T extends object>(
+  stack: AsyncDisposableStack,
+  value: T,
+): WithAsyncDispose<T> {
+  const moved = stack.move();
+  return Object.assign(value, {
+    async [Symbol.asyncDispose]() {
+      await moved.disposeAsync();
+    },
+  });
+}
+
+export async function getPullRequestWorktree(
+  context: PullRequestContext,
+  cwd: string = process.cwd(),
+): Promise<WithAsyncDispose<WorktreeInfo>> {
+  await using stack = new AsyncDisposableStack();
+  const worktreeDir = stack.use(
+    await mkdtemp("changesets-action-pr-status-"),
+  ).dir;
+
+  const refs = getRefs(context);
+
+  stack.use(await tempRef(cwd, refs.base));
+  stack.use(await tempRef(cwd, refs.head));
+  stack.use(await tempWorktree(cwd, worktreeDir, refs.head));
+
+  await ensureMergeBase({
+    cwd: worktreeDir,
+    refs,
+  });
+
+  return moveDisposable(stack, {
+    baseRef: refs.base.local,
+    cwd: worktreeDir,
+  });
+}

src/publish/index.ts

@@ -0,0 +1,67 @@
+import fs from "node:fs/promises";
+import os from "node:os";
+import * as core from "@actions/core";
+import { Git } from "../git.ts";
+import { setupOctokit } from "../octokit.ts";
+import { runPublish } from "../run.ts";
+import { downloadArtifact } from "../utils.ts";
+
+try {
+  await main();
+} catch (err) {
+  core.setFailed((err as Error).message);
+}
+
+async function main() {
+  const githubToken = core.getInput("github-token", { required: true });
+  const script = core.getInput("script");
+  const packDirArtifactId = core.getInput("pack-dir-artifact-id");
+  const createGithubReleases = core.getBooleanInput("create-github-releases");
+
+  // If the user needs to change the cwd, set `working-directory` in the step instead
+  const cwd = process.cwd();
+
+  const octokit = setupOctokit(githubToken);
+  // NOTE: Always pass octokit here as publish does not need a commit-mode
+  const git = new Git({ octokit, cwd });
+
+  const fromPackDir = packDirArtifactId
+    ? await downloadArtifact(
+        process.env.RUNNER_TEMP ?? (await fs.realpath(os.tmpdir())),
+        Number(packDirArtifactId),
+        "changeset-pack",
+      )
+    : undefined;
+
+  const result = await runPublish({
+    script,
+    githubToken,
+    git,
+    octokit,
+    createGithubReleases,
+    cwd,
+    fromPackDir,
+  });
+
+  if (result.published) {
+    core.setOutput("published", "true");
+    core.setOutput(
+      "published-packages",
+      JSON.stringify(result.publishedPackages),
+    );
+  } else {
+    core.setOutput("published", "false");
+  }
+
+  if (result.exitCode !== 0) {
+    throw new Error(
+      `Publish command exited with code ${result.exitCode}${
+        result.published
+          ? `, but some packages were published: ${result.publishedPackages
+              .map((p) => `${p.name}@${p.version}`)
+              .join(", ")}`
+          : ""
+      }`,
+    );
+  }
+}

src/run.ts

@@ -1,25 +1,28 @@
 import fs from "node:fs/promises";
-import { createRequire } from "node:module";
 import path from "node:path";
 import * as core from "@actions/core";
-import { exec, getExecOutput } from "@actions/exec";
+import {
+  exec,
+  getExecOutput,
+  type ExecOptions,
+  type ExecOutput,
+} from "@actions/exec";
 import * as github from "@actions/github";
 import type { PreState } from "@changesets/types";
 import { type Package, getPackages } from "@manypkg/get-packages";
-import semverLt from "semver/functions/lt.js";
 import { Git } from "./git.ts";
 import type { Octokit } from "./octokit.ts";
 import readChangesetState from "./readChangesetState.ts";
 import {
+  execChangesetsCli,
   getChangedPackages,
   getChangelogEntry,
+  getExecOutputChangesetsCli,
   getVersionsByDirectory,
   isErrorWithCode,
   sortTheThings,
 } from "./utils.ts";
 
-const require = createRequire(import.meta.url);
-
 // GitHub Issues/PRs messages have a max size limit on the
 // message body payload.
 // `body is too long (maximum is 65536 characters)`.
@@ -59,7 +62,8 @@ const createRelease = async (
 };
 
 type PublishOptions = {
-  script: string;
+  script?: string;
+  fromPackDir?: string;
   githubToken: string;
   octokit: Octokit;
   createGithubReleases: boolean;
@@ -73,26 +77,45 @@ type PublishResult =
   | {
       published: true;
       publishedPackages: PublishedPackage[];
+      exitCode: number;
     }
   | {
       published: false;
+      exitCode: number;
     };
 
 export async function runPublish({
   script,
+  fromPackDir,
   githubToken,
   git,
   octokit,
   createGithubReleases,
   cwd,
 }: PublishOptions): Promise<PublishResult> {
-  let [publishCommand, ...publishArgs] = script.split(/\s+/);
+  let changesetPublishOutput: ExecOutput;
+  const execOptions: ExecOptions = {
+    cwd,
+    ignoreReturnCode: true,
+    env: { ...process.env, GITHUB_TOKEN: githubToken },
+  };
 
-  let changesetPublishOutput = await getExecOutput(
+  if (script) {
-    publishCommand,
+    changesetPublishOutput = await getExecOutput(
-    publishArgs,
+      script,
-    { cwd, env: { ...process.env, GITHUB_TOKEN: githubToken } },
+      undefined,
+      execOptions,
     );
+  } else {
+    const args = ["publish"];
+    if (fromPackDir) {
+      args.push("--from-pack-dir", fromPackDir);
+    }
+    changesetPublishOutput = await getExecOutputChangesetsCli(
+      args,
+      execOptions,
+    );
+  }
 
   let { packages, tool } = await getPackages(cwd);
   let releasedPackages: Package[] = [];
@@ -158,30 +181,13 @@ export async function runPublish({
         name: pkg.packageJson.name,
         version: pkg.packageJson.version,
       })),
+      exitCode: changesetPublishOutput.exitCode,
     };
   }
 
-  return { published: false };
+  return { published: false, exitCode: changesetPublishOutput.exitCode };
 }
 
-const requireChangesetsCliPkgJson = (cwd: string) => {
-  try {
-    return require(
-      require.resolve("@changesets/cli/package.json", {
-        paths: [cwd],
-      }),
-    );
-  } catch (err) {
-    if (isErrorWithCode(err, "MODULE_NOT_FOUND")) {
-      throw new Error(
-        `Have you forgotten to install \`@changesets/cli\` in "${cwd}"?`,
-        { cause: err },
-      );
-    }
-    throw err;
-  }
-};
-
 type GetMessageOptions = {
   hasPublishScript: boolean;
   branch: string;
@@ -293,26 +299,9 @@ export async function runVersion({
   const env = { ...process.env, GITHUB_TOKEN: githubToken };
 
   if (script) {
-    let [versionCommand, ...versionArgs] = script.split(/\s+/);
+    await exec(script, undefined, { cwd, env });
-    await exec(versionCommand, versionArgs, { cwd, env });
   } else {
-    let changesetsCliPkgJson = requireChangesetsCliPkgJson(cwd);
+    await execChangesetsCli(["version"], { cwd, env });
-    let cmd = semverLt(changesetsCliPkgJson.version, "2.0.0")
-      ? "bump"
-      : "version";
-    await exec(
-      "node",
-      [
-        require.resolve("@changesets/cli/bin.js", {
-          paths: [cwd],
-        }),
-        cmd,
-      ],
-      {
-        cwd,
-        env,
-      },
-    );
   }
 
   let changedPackages = await getChangedPackages(cwd, versionsByDirectory);

src/select-mode/index.ts

@@ -0,0 +1,117 @@
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import artifact from "@actions/artifact";
+import * as core from "@actions/core";
+import readChangesetState from "../readChangesetState.ts";
+import { execChangesetsCli } from "../utils.ts";
+
+type ModeResult =
+  | {
+      mode: "none";
+    }
+  | {
+      mode: "version";
+    }
+  | {
+      mode: "publish";
+      publishPlanPath: string;
+    };
+
+type PublishPlan = unknown[];
+
+try {
+  await main();
+} catch (err) {
+  core.setFailed((err as Error).message);
+}
+
+async function main() {
+  const result = await getMode();
+  core.setOutput("mode", result.mode);
+  if (result.mode === "publish") {
+    const publishPlanArtifact = await artifact.uploadArtifact(
+      path.basename(result.publishPlanPath, ".json"),
+      [result.publishPlanPath],
+      path.dirname(result.publishPlanPath),
+      {
+        skipArchive: true,
+        retentionDays: 30,
+      },
+    );
+    if (publishPlanArtifact.id === undefined) {
+      throw new Error(
+        "Publish plan artifact upload did not return an artifact id",
+      );
+    }
+    core.setOutput("publish-plan-artifact-id", String(publishPlanArtifact.id));
+  }
+}
+
+async function getMode(): Promise<ModeResult> {
+  const { changesets } = await readChangesetState();
+
+  if (changesets.length > 0) {
+    const hasNonEmptyChangesets = changesets.some(
+      (changeset) => changeset.releases.length > 0,
+    );
+    if (hasNonEmptyChangesets) {
+      return { mode: "version" };
+    }
+    return { mode: "none" };
+  }
+
+  const cwd = process.cwd();
+  const publishPlanPath = path.join(
+    process.env.RUNNER_TEMP ?? (await fs.realpath(os.tmpdir())),
+    `changeset-publish-plan-${Date.now()}.json`,
+  );
+  await execChangesetsCli(["publish-plan", "--output", publishPlanPath], {
+    cwd,
+    env: process.env,
+  });
+
+  const publishPlan = await readPublishPlan(publishPlanPath);
+  if (publishPlan.length === 0) {
+    return { mode: "none" };
+  }
+
+  return {
+    mode: "publish",
+    publishPlanPath,
+  };
+}
+
+async function readPublishPlan(publishPlanPath: string): Promise<PublishPlan> {
+  let rawPlan: string;
+  try {
+    rawPlan = await fs.readFile(publishPlanPath, "utf8");
+  } catch (err) {
+    throw new Error(`Failed to read publish plan at ${publishPlanPath}`, {
+      cause: err,
+    });
+  }
+
+  let plan: unknown;
+  try {
+    plan = JSON.parse(rawPlan);
+  } catch (err) {
+    throw new Error(`Failed to parse publish plan at ${publishPlanPath}`, {
+      cause: err,
+    });
+  }
+
+  if (
+    typeof plan !== "object" ||
+    plan === null ||
+    !("version" in plan) ||
+    typeof plan.version !== "number" ||
+    !("plan" in plan) ||
+    !Array.isArray(plan.plan)
+  ) {
+    throw new Error(
+      `Invalid publish plan at ${publishPlanPath}: expected { version: number; plan: unknown[] }`,
+    );
+  }
+  return plan.plan;
+}

src/utils.ts

@@ -1,11 +1,16 @@
 import fs from "node:fs/promises";
+import { createRequire } from "node:module";
+import path from "node:path";
+import artifact from "@actions/artifact";
+import {
+  exec,
+  getExecOutput,
+  type ExecOptions as ActionsExecOptions,
+  type ExecOutput,
+} from "@actions/exec";
 import { getPackages, type Package } from "@manypkg/get-packages";
-import type { Root } from "mdast";
+
-// @ts-ignore
+const require = createRequire(import.meta.url);
-import mdastToString from "mdast-util-to-string";
-import remarkParse from "remark-parse";
-import remarkStringify from "remark-stringify";
-import unified from "unified";
 
 export const BumpLevels = {
   dep: 0,
@@ -37,51 +42,55 @@ export async function getChangedPackages(
 }
 
 export function getChangelogEntry(changelog: string, version: string) {
-  let ast = unified().use(remarkParse).parse(changelog) as Root;
-
   let highestLevel: number = BumpLevels.dep;
-
+  let headingStartInfo: { index: number; depth: number } | undefined;
-  let nodes = ast.children;
-  let headingStartInfo:
-    | {
-        index: number;
-        depth: number;
-      }
-    | undefined;
   let endIndex: number | undefined;
 
-  for (let i = 0; i < nodes.length; i++) {
+  // Iterate through each headings and code blocks (for skipping its contents)
-    let node = nodes[i];
+  const regex = /^(#{1,6})\s(.*)$|^(`{3,})/gm;
-    if (node.type === "heading") {
+  let match: RegExpExecArray | null;
-      let stringified: string = mdastToString(node);
+  while ((match = regex.exec(changelog)) != null) {
-      let match = stringified.toLowerCase().match(/(major|minor|patch)/);
+    // Skip over code blocks so we don't match any headings inside of them
-      if (match !== null) {
+    if (match[3]) {
-        let level = BumpLevels[match[0] as "major" | "minor" | "patch"];
+      const endOfCodeBlockRegex = new RegExp(`^${match[3]}`, "gm");
-        highestLevel = Math.max(level, highestLevel);
+      endOfCodeBlockRegex.lastIndex = regex.lastIndex;
-      }
+      const endMatch = endOfCodeBlockRegex.exec(changelog);
-      if (headingStartInfo === undefined && stringified === version) {
+      if (endMatch) {
-        headingStartInfo = {
+        // Start next search for headings after the end of the code block
-          index: i,
+        regex.lastIndex = endOfCodeBlockRegex.lastIndex;
-          depth: node.depth,
-        };
         continue;
-      }
+      } else {
-      if (
+        // Can't find end of code block, probably malformed
-        endIndex === undefined &&
-        headingStartInfo !== undefined &&
-        headingStartInfo.depth === node.depth
-      ) {
-        endIndex = i;
         break;
       }
     }
+
+    const headingDepth = match[1].length;
+    const headingText = match[2].trim();
+
+    // Search for the highest bump level in the entire changelog
+    const levelMatch = /(major|minor|patch)/.exec(headingText.toLowerCase());
+    if (levelMatch != null) {
+      const level = BumpLevels[levelMatch[0] as "major" | "minor" | "patch"];
+      highestLevel = Math.max(level, highestLevel);
     }
-  if (headingStartInfo) {
+
-    ast.children = ast.children.slice(headingStartInfo.index + 1, endIndex);
+    // Search for heading of the entry
+    if (headingText === version) {
+      headingStartInfo = { index: regex.lastIndex, depth: headingDepth };
+      continue;
     }
+
+    // If we've found the entry heading, search for the closing heading with the same depth
+    if (headingStartInfo && headingDepth === headingStartInfo.depth) {
+      endIndex = match.index;
+      break;
+    }
+  }
+
   return {
-    content: unified().use(remarkStringify).stringify(ast),
+    content: changelog.slice(headingStartInfo?.index, endIndex).trim(),
-    highestLevel: highestLevel,
+    highestLevel,
   };
 }
 
@@ -113,3 +122,57 @@ export function fileExists(filePath: string) {
     () => false,
   );
 }
+
+function resolveChangesetsCli(cwd: string) {
+  return require.resolve("@changesets/cli/bin.js", {
+    paths: [cwd],
+  });
+}
+
+interface ExecOptions extends Omit<ActionsExecOptions, "env"> {
+  env?: Record<string, string | undefined>;
+}
+
+export function execChangesetsCli(args: string[], options?: ExecOptions) {
+  return exec(
+    "node",
+    [resolveChangesetsCli(options?.cwd ?? process.cwd()), ...args],
+    options as ActionsExecOptions,
+  );
+}
+
+export function getExecOutputChangesetsCli(
+  args: string[],
+  options?: ExecOptions,
+): Promise<ExecOutput> {
+  return getExecOutput(
+    "node",
+    [resolveChangesetsCli(options?.cwd ?? process.cwd()), ...args],
+    options as ActionsExecOptions,
+  );
+}
+
+export async function downloadArtifact(
+  tmpDir: string,
+  artifactId: number,
+  name: string,
+) {
+  if (!Number.isInteger(artifactId) || artifactId <= 0) {
+    throw new Error(
+      `Invalid ${JSON.stringify(name)} artifact id: ${artifactId}`,
+    );
+  }
+
+  const downloadPath = path.join(tmpDir, `${name}-${artifactId}-${Date.now()}`);
+  const result = await artifact.downloadArtifact(artifactId, {
+    path: downloadPath,
+  });
+
+  if (!result.downloadPath) {
+    throw new Error(
+      `${JSON.stringify(name)} artifact download did not return a path for artifact ${artifactId}`,
+    );
+  }
+
+  return result.downloadPath;
+}

src/version/index.ts

@@ -0,0 +1,56 @@
+import * as core from "@actions/core";
+import { Git } from "../git.ts";
+import { setupOctokit } from "../octokit.ts";
+import { runVersion } from "../run.ts";
+
+try {
+  await main();
+} catch (err) {
+  core.setFailed((err as Error).message);
+}
+
+async function main() {
+  const githubToken = core.getInput("github-token", { required: true });
+  const script = core.getInput("script");
+  const commitMessage = core.getInput("commit-message", { required: true });
+  const prTitle = core.getInput("pr-title", { required: true });
+  const prDraft = core.getInput("pr-draft") || undefined;
+  const prBaseBranch = core.getInput("pr-base-branch");
+  const commitMode = core.getInput("commit-mode") || "git-cli";
+  const setupGitUser = core.getBooleanInput("setup-git-user");
+
+  // Validations
+  if (prDraft !== undefined && prDraft !== "always" && prDraft !== "create") {
+    throw new Error(`Invalid pr-draft input: ${prDraft}`);
+  }
+
+  // If the user needs to change the cwd, set `working-directory` in the step instead
+  const cwd = process.cwd();
+
+  const octokit = setupOctokit(githubToken);
+  const git = new Git({
+    octokit: commitMode === "github-api" ? octokit : undefined,
+    cwd,
+  });
+
+  if (setupGitUser) {
+    core.info("setting git user");
+    await git.setupUser();
+  }
+
+  const { pullRequestNumber } = await runVersion({
+    script,
+    githubToken,
+    git,
+    octokit,
+    cwd,
+    prTitle,
+    commitMessage,
+    // TODO: Use neutral message for PR description
+    hasPublishScript: true,
+    prDraft,
+    branch: prBaseBranch,
+  });
+
+  core.setOutput("pr-number", String(pullRequestNumber));
+}

tsconfig.json

@@ -1,14 +1,11 @@
 {
+  "extends": "@tsconfig/node24/tsconfig.json",
   "compilerOptions": {
     "allowImportingTsExtensions": true,
     "erasableSyntaxOnly": true,
-    "isolatedModules": true,
+    "verbatimModuleSyntax": true,
-    "module": "node18",
-    "moduleResolution": "node16",
-    "noEmit": true,
-    "resolveJsonModule": true,
     "strict": true,
-    "target": "esnext",
+    "noEmit": true,
-    "verbatimModuleSyntax": true
+    "types": ["node"]
   }
 }

version/README.md

@@ -0,0 +1,3 @@
+# changesets/action/version
+
+TODO

version/action.yml

@@ -0,0 +1,43 @@
+name: Changesets - Version
+description: Version packages
+runs:
+  using: node24
+  main: ../dist/version.js
+inputs:
+  github-token:
+    description: "The GitHub token to use for authentication. Defaults to the GitHub-provided token."
+    required: false
+    default: ${{ github.token }}
+  script:
+    description: "The command to use to publish packages"
+    required: false
+  commit-message:
+    description: "The commit message. Default to `Version Packages`"
+    required: false
+    default: "Version Packages"
+  pr-title:
+    description: "The pull request title. Default to `Version Packages`"
+    required: false
+    default: "Version Packages"
+  pr-draft:
+    description: "Controls draft PR behavior. Use 'create' to create new version PRs as draft, or 'always' to also convert existing version PRs back to draft when updating them."
+    required: false
+  pr-base-branch:
+    description: "Sets the base branch of the PR. Defaults to `github.ref_name`."
+    required: false
+  commit-mode:
+    description: >
+      An enum to specify the commit mode. Use "git-cli" to push changes using the Git CLI,
+      or "github-api" to push changes via the GitHub API. When using "github-api",
+      all commits and tags are signed using GitHub's GPG key and attributed to the user
+      or app who owns the GITHUB_TOKEN.
+    required: false
+    default: "git-cli"
+  setup-git-user:
+    description: Sets up the git user for commits as `"github-actions[bot]"`. Default to `true`
+    required: false
+    default: true
+outputs: {}
+branding:
+  icon: package
+  color: blue