feat: Add a new Github Actions Reporter

change/change-e38ab074-9193-4447-95c9-467ed1f4ebb6.json

@@ -0,0 +1,18 @@
+{
+  "changes": [
+    {
+      "type": "patch",
+      "comment": "chore: add Github Actions Reporter",
+      "packageName": "@lage-run/cli",
+      "email": "sanajmi@microsoft.com",
+      "dependentChangeType": "patch"
+    },
+    {
+      "type": "minor",
+      "comment": "chore: add Github Actions Reporter",
+      "packageName": "@lage-run/reporters",
+      "email": "sanajmi@microsoft.com",
+      "dependentChangeType": "patch"
+    }
+  ]
+}

packages/cli/src/__tests__/customReporter.test.ts

@@ -21,7 +21,7 @@ describe("initializeReporters with custom reporters", () => {
         customReporters
       )
     ).rejects.toThrowErrorMatchingInlineSnapshot(
-      `"Invalid --reporter option: "nonExistentReporter123". Supported reporters are: json, azureDevops, npmLog, verboseFileLog, vfl, adoLog, fancy, default"`
+      `"Invalid --reporter option: "nonExistentReporter123". Supported reporters are: json, azureDevops, npmLog, verboseFileLog, vfl, adoLog, githubActions, gha, fancy, default"`
     );
   });
 

packages/cli/src/__tests__/initializeReporters.test.ts

@@ -1,5 +1,5 @@
 import { Logger, type Reporter } from "@lage-run/logger";
-import { AdoReporter, BasicReporter, ChromeTraceEventsReporter, LogReporter } from "@lage-run/reporters";
+import { AdoReporter, BasicReporter, ChromeTraceEventsReporter, GithubActionsReporter, LogReporter } from "@lage-run/reporters";
 import fs from "fs";
 import isInteractive from "is-interactive";
 import os from "os";
@@ -11,16 +11,33 @@ jest.mock("is-interactive", () => jest.fn(() => true));
 describe("initializeReporters", () => {
   let tmpDir: string;
   let reporters: Reporter[] | undefined;
+  let savedGithubActions: string | undefined;
+  let savedTfBuild: string | undefined;
 
   beforeAll(() => {
     tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "lage-"));
   });
 
+  beforeEach(() => {
+    // Save and clear CI env vars so default-reporter tests are environment-independent
+    savedGithubActions = process.env.GITHUB_ACTIONS;
+    savedTfBuild = process.env.TF_BUILD;
+    delete process.env.GITHUB_ACTIONS;
+    delete process.env.TF_BUILD;
+  });
+
   afterEach(async () => {
     for (const reporter of reporters || []) {
       reporter.cleanup?.();
     }
     reporters = undefined;
+    // Restore CI env vars
+    if (savedGithubActions !== undefined) {
+      process.env.GITHUB_ACTIONS = savedGithubActions;
+    }
+    if (savedTfBuild !== undefined) {
+      process.env.TF_BUILD = savedTfBuild;
+    }
   });
 
   afterAll(() => {
@@ -115,4 +132,34 @@ describe("initializeReporters", () => {
     expect(reporters.length).toBe(1);
     expect(reporters).toContainEqual(expect.any(AdoReporter));
   });
+
+  it("should auto-detect GitHub Actions and use GithubActionsReporter", async () => {
+    process.env.GITHUB_ACTIONS = "true";
+    const logger = new Logger();
+    reporters = await initializeReporters(logger, {
+      concurrency: 1,
+      grouped: false,
+      logLevel: "info",
+      progress: false,
+      reporter: [],
+      verbose: false,
+    });
+    expect(reporters.length).toBe(1);
+    expect(reporters).toContainEqual(expect.any(GithubActionsReporter));
+  });
+
+  it("should auto-detect Azure DevOps and use AdoReporter", async () => {
+    process.env.TF_BUILD = "True";
+    const logger = new Logger();
+    reporters = await initializeReporters(logger, {
+      concurrency: 1,
+      grouped: false,
+      logLevel: "info",
+      progress: false,
+      reporter: [],
+      verbose: false,
+    });
+    expect(reporters.length).toBe(1);
+    expect(reporters).toContainEqual(expect.any(AdoReporter));
+  });
 });

packages/cli/src/commands/createReporter.ts

@@ -2,6 +2,7 @@ import { LogLevel } from "@lage-run/logger";
 import {
   JsonReporter,
   AdoReporter,
+  GithubActionsReporter,
   LogReporter,
   ProgressReporter,
   BasicReporter,
@@ -40,6 +41,10 @@ export async function createReporter(
     case "adoLog":
       return new AdoReporter({ grouped, logLevel: verbose ? LogLevel.verbose : logLevel });
 
+    case "githubActions":
+    case "gha":
+      return new GithubActionsReporter({ grouped, logLevel: verbose ? LogLevel.verbose : logLevel });
+
     case "npmLog":
     case "old":
       return new LogReporter({ grouped, logLevel: verbose ? LogLevel.verbose : logLevel });
@@ -78,7 +83,15 @@ export async function createReporter(
     }
   }
 
-  // Default reporter behavior
+  // Default reporter behavior - auto-detect CI environments
+  if (process.env.GITHUB_ACTIONS) {
+    return new GithubActionsReporter({ grouped: true, logLevel: verbose ? LogLevel.verbose : logLevel });
+  }
+
+  if (process.env.TF_BUILD) {
+    return new AdoReporter({ grouped: true, logLevel: verbose ? LogLevel.verbose : logLevel });
+  }
+
   if (progress && isInteractive() && !(logLevel >= LogLevel.verbose || verbose || grouped)) {
     return new BasicReporter({ concurrency, version });
   }

packages/cli/src/types/ReporterInitOptions.ts

@@ -7,6 +7,8 @@ export type BuiltInReporterName =
   | "json"
   | "azureDevops"
   | "adoLog"
+  | "githubActions"
+  | "gha"
   | "npmLog"
   | "old"
   | "verboseFileLog"
@@ -23,6 +25,8 @@ const shouldListBuiltInReporters: Record<BuiltInReporterName, boolean> = {
   verboseFileLog: true,
   vfl: true,
   adoLog: true,
+  githubActions: true,
+  gha: true,
   fancy: true,
   default: true,
   // Not encouraged