From d7d94b4fc3ce0fa908eb3f38bb063760c09dcc7f Mon Sep 17 00:00:00 2001
From: hirotomoyamada <hirotomo.yamada@avap.co.jp>
Date: Tue, 10 Mar 2026 02:18:22 +0900
Subject: [PATCH] feat(run): add support for assigning PRs via 'assignees'

---
 README.md       |  1 +
 action.yml      |  3 +++
 src/index.ts    |  1 +
 src/run.test.ts | 42 ++++++++++++++++++++++++++++++++++++++++++
 src/run.ts      |  3 +++
 5 files changed, 50 insertions(+)

diff --git a/README.md b/README.md
index ebfda456..a0ed7c87 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@ This action for [Changesets](https://github.com/changesets/changesets) creates a
 - createGithubReleases - A boolean value to indicate whether to create Github releases after `publish` or not. Default to `true`
 - commitMode - Specifies 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 GPG-signed and attributed to the user or app who owns the `GITHUB_TOKEN`. Default to `git-cli`.
 - cwd - Changes node's `process.cwd()` if the project is not located on the root. Default to `process.cwd()`
+- assignees - The assignees to assign the pull request to.
 
 ### Outputs
 
diff --git a/action.yml b/action.yml
index 89fe87a7..ef849cad 100644
--- a/action.yml
+++ b/action.yml
@@ -43,6 +43,9 @@ inputs:
   branch:
     description: Sets the branch in which the action will run. Default to `github.ref_name` if not provided
     required: false
+  assignees:
+    description: The assignees to assign the pull request to.
+    required: false
 outputs:
   published:
     description: A boolean value to indicate whether a publishing is happened or not
diff --git a/src/index.ts b/src/index.ts
index 7021e49c..26473c45 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -146,6 +146,7 @@ const getOptionalInput = (name: string) => core.getInput(name) || undefined;
         commitMessage: getOptionalInput("commit"),
         hasPublishScript,
         branch: getOptionalInput("branch"),
+        assignees: getOptionalInput("assignees"),
       });
 
       core.setOutput("pullRequestNumber", String(pullRequestNumber));
diff --git a/src/run.test.ts b/src/run.test.ts
index 90c9fc00..366157ff 100644
--- a/src/run.test.ts
+++ b/src/run.test.ts
@@ -277,4 +277,46 @@ fluminis divesque vulnere aquis parce lapsis rabie si visa fulmineis.
       /All release information have been omitted from this message, as the content exceeds the size limit/
     );
   });
+
+  it("creates PR with assignees", async () => {
+    let cwd = f.copy("simple-project");
+    await linkNodeModules(cwd);
+
+    mockedGithubMethods.pulls.list.mockImplementationOnce(() => ({ data: [] }));
+
+    mockedGithubMethods.pulls.create.mockImplementationOnce(() => ({
+      data: { number: 123 },
+    }));
+
+    await writeChangesets(
+      [
+        {
+          releases: [
+            {
+              name: "simple-project-pkg-a",
+              type: "minor",
+            },
+            {
+              name: "simple-project-pkg-b",
+              type: "minor",
+            },
+          ],
+          summary: "Awesome feature",
+        },
+      ],
+      cwd
+    );
+
+    await runVersion({
+      octokit: setupOctokit("@@GITHUB_TOKEN"),
+      githubToken: "@@GITHUB_TOKEN",
+      git: new Git({ cwd }),
+      cwd,
+      assignees: "user1,user2",
+    });
+
+    expect(mockedGithubMethods.pulls.create.mock.calls[0][0].assignees).toEqual(
+      ["user1", "user2"]
+    );
+  });
 });
diff --git a/src/run.ts b/src/run.ts
index 5ddb33e3..609ad456 100644
--- a/src/run.ts
+++ b/src/run.ts
@@ -260,6 +260,7 @@ type VersionOptions = {
   hasPublishScript?: boolean;
   prBodyMaxCharacters?: number;
   branch?: string;
+  assignees?: string;
 };
 
 type RunVersionResult = {
@@ -277,6 +278,7 @@ export async function runVersion({
   hasPublishScript = false,
   prBodyMaxCharacters = MAX_CHARACTERS_PER_MESSAGE,
   branch = github.context.ref.replace("refs/heads/", ""),
+  assignees,
 }: VersionOptions): Promise<RunVersionResult> {
   let versionBranch = `changeset-release/${branch}`;
 
@@ -376,6 +378,7 @@ export async function runVersion({
       head: versionBranch,
       title: finalPrTitle,
       body: prBody,
+      ...(assignees ? { assignees: assignees.split(",") } : {}),
       ...github.context.repo,
     });