Support create comment on pull_request_target event (#22)

* Support pull_request_target event

* Update README.md

* Run prepare

Co-authored-by: Zennon Gosalvez <1798166+zgosalvez@users.noreply.github.com>

Author: jhen0409

README.md

@@ -49,6 +49,7 @@ jobs:
         github-token: ${{ secrets.GITHUB_TOKEN }}
         working-directory: apps/my-first-app
 ```
+*Note:* Only the `pull_request` and `pull_request_target` events are supported. This action does nothing when triggered by other event types.
 
 ### Flutter Workflows
 

dist/main/index.js

@@ -7,6 +7,8 @@ const lcovTotal = require("lcov-total");
 const os = require('os');
 const path = require('path');
 
+const events = ['pull_request', 'pull_request_target'];
+
 async function run() {
   try {
     await exec.exec('sudo apt-get install -y lcov');
@@ -25,7 +27,7 @@ async function run() {
     const errorMessage = `The code coverage is too low. Expected at least ${minimumCoverage}.`;
     const isFailure = totalCoverage < minimumCoverage;
 
-    if (gitHubToken !== '' && github.context.eventName === 'pull_request') {
+    if (gitHubToken !== '' && events.includes(github.context.eventName)) {
       const octokit = await github.getOctokit(gitHubToken);
       const summary = await summarize(coverageFile);
       const details = await detail(coverageFile, octokit);