fix: fix unclosed issues linked to merged pr function

unclosedIssuesInMergedPr/index.js

@@ -6,6 +6,7 @@ module.exports = function (context, req) {
     if (req.action !== 'closed' || !req.pull_request.merged) {
         context.log('Only watch merged PR.');
         context.done(null, { success: false, message: 'Only watch merged PR.' });
+        return;
     }
     var githubApiHeaders = {
         'User-Agent': 'github-bot-uwp-toolkit',
@@ -21,6 +22,10 @@ module.exports = function (context, req) {
                 .filter(function (r) { return r.__typename === 'Issue' && r.closed === false; })
                 .map(function (r) { return r.__typename === 'Issue' ? r.number : null; })
                 .filter(function (n) { return !!n; });
+            if (unclosedIssuesNumber.length <= 0) {
+                context.done(null, { success: false, message: 'No unclosed issue linked to this merged PR.' });
+                return;
+            }
             if (process.env.GITHUB_BOT_UWP_TOOLKIT_ACTIVATE_MUTATION) {
                 var linkedItemsMessagePart = unclosedIssuesNumber.map(function (n) { return '#' + n; }).join(', ');
                 github_1.commentGitHubIssue(githubApiHeaders, pullRequest.id, "This PR is linked to unclosed issues. Please check if one of these issues should be closed: " + linkedItemsMessagePart);

unclosedIssuesInMergedPr/index.ts

@@ -6,6 +6,7 @@ module.exports = (context, req) => {
     if (req.action !== 'closed' || !req.pull_request.merged) {
         context.log('Only watch merged PR.');
         context.done(null, { success: false, message: 'Only watch merged PR.' });
+        return;
     }
 
     const githubApiHeaders = {
@@ -34,6 +35,11 @@ module.exports = (context, req) => {
                     .map(r => r.__typename === 'Issue' ? r.number : null)
                     .filter(n => !!n);
 
+                if (unclosedIssuesNumber.length <= 0) {
+                    context.done(null, { success: false, message: 'No unclosed issue linked to this merged PR.' });
+                    return;
+                }
+
                 if (process.env.GITHUB_BOT_UWP_TOOLKIT_ACTIVATE_MUTATION) {
                     // send a message with links to unclosed issues
                     const linkedItemsMessagePart = unclosedIssuesNumber.map(n => '#' + n).join(', ');