projen · mergify · Jan 11, 2022 · Jan 3, 2022 · Jan 11, 2022 · Jan 11, 2022
diff --git a/.projen/tasks.json b/.projen/tasks.json
diff --git a/API.md b/API.md
@@ -7555,6 +7555,7 @@ new javascript.UpgradeDependencies(project: NodeProject, options?: UpgradeDepend
 Name | Type | Description 
 -----|------|-------------
 **ignoresProjen**🔹 | <code>boolean</code> | Whether or not projen is also upgraded in this workflow,.
+**postUpgradeTask**🔹 | <code>[Task](#projen-task)</code> | A task run after the upgrade task.
 **workflows**🔹 | <code>Array<[github.GithubWorkflow](#projen-github-githubworkflow)></code> | The workflows that execute the upgrades.
 **containerOptions**?🔹 | <code>[github.workflows.ContainerOptions](#projen-github-workflows-containeroptions)</code> | Container definitions for the upgrade workflow.<br/>__*Optional*__
 

diff --git a/package.json b/package.json
diff --git a/src/javascript/upgrade-dependencies.ts b/src/javascript/upgrade-dependencies.ts
@@ -106,6 +106,11 @@ export class UpgradeDependencies extends Component {
    */
   public containerOptions?: ContainerOptions;
 
+  /**
+   * A task run after the upgrade task.
+   */
+  public readonly postUpgradeTask: Task;
+
   private readonly gitIdentity: GitIdentity;
   private readonly postBuildSteps: JobStep[];
 
@@ -122,6 +127,12 @@ export class UpgradeDependencies extends Component {
     this.containerOptions = options.workflowOptions?.container;
 
     project.addDevDeps("npm-check-updates@^12");
+
+    this.postUpgradeTask =
+      project.tasks.tryFind("post-upgrade") ??
+      project.tasks.addTask("post-upgrade", {
+        description: "Runs after upgrading dependencies",
+      });
   }
 
   /**
@@ -197,6 +208,8 @@ export class UpgradeDependencies extends Component {
     // run "projen" to give projen a chance to update dependencies (it will also run "yarn install")
     task.exec(this._project.projenCommand);
 
+    task.spawn(this.postUpgradeTask);
+
     return task;
   }
 

diff --git a/test/__snapshots__/integ.test.ts.snap b/test/__snapshots__/integ.test.ts.snap
diff --git a/test/node-project.test.ts b/test/node-project.test.ts
@@ -807,6 +807,18 @@ describe("workflowRunsOn", () => {
   });
 });
 
+test("post-upgrade workflow", () => {
+  // GIVEN
+  const project = new TestNodeProject();
+
+  // THEN
+  const snapshot = synthSnapshot(project);
+  const tasks = snapshot[Tasks.MANIFEST_FILE].tasks;
+  expect(tasks.upgrade.steps[tasks.upgrade.steps.length - 1]).toStrictEqual({
+    spawn: "post-upgrade",
+  });
+});
+
 class TestNodeProject extends NodeProject {
   constructor(options: Partial<NodeProjectOptions> = {}) {
     super({

diff --git a/test/web/__snapshots__/nextjs-project.test.ts.snap b/test/web/__snapshots__/nextjs-project.test.ts.snap
diff --git a/test/web/__snapshots__/nextjs-ts-project.test.ts.snap b/test/web/__snapshots__/nextjs-ts-project.test.ts.snap
diff --git a/test/web/__snapshots__/react-project.test.ts.snap b/test/web/__snapshots__/react-project.test.ts.snap
diff --git a/test/web/__snapshots__/react-ts-project.test.ts.snap b/test/web/__snapshots__/react-ts-project.test.ts.snap