chore: Release 3.4.0 [skip ci]

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [3.4.0](https://github.com/amannn/action-semantic-pull-request/compare/v3.3.0...v3.4.0) (2021-02-15)
+
+
+### Features
+
+* Add `validateSingleCommit` flag to validate the commit message if there's only a single commit in the PR (opt-in). This is intended to be used as a workaround for an issue with Github as in this case, the PR title won't be used as the default commit message when merging a PR. ([#87](https://github.com/amannn/action-semantic-pull-request/issues/87)) ([3f20459](https://github.com/amannn/action-semantic-pull-request/commit/3f20459aa1121f2f0093f06f565a95fe7c5cf402))
+
 ## [3.3.0](https://github.com/amannn/action-semantic-pull-request/compare/v3.2.6...v3.3.0) (2021-02-10)
 
 

dist/index.js

@@ -33299,7 +33299,8 @@ module.exports = async function run() {
       requireScope,
       wip,
       subjectPattern,
-      subjectPatternError
+      subjectPatternError,
+      validateSingleCommit
     } = parseConfig();
 
     const contextPullRequest = github.context.payload.pull_request;
@@ -33335,6 +33336,31 @@ module.exports = async function run() {
           subjectPattern,
           subjectPatternError
         });
+
+        if (validateSingleCommit) {
+          const {data: commits} = await client.pulls.listCommits({
+            owner,
+            repo,
+            pull_number: contextPullRequest.number,
+            per_page: 2
+          });
+
+          if (commits.length === 1) {
+            try {
+              await validatePrTitle(commits[0].commit.message, {
+                types,
+                scopes,
+                requireScope,
+                subjectPattern,
+                subjectPatternError
+              });
+            } catch (error) {
+              throw new Error(
+                `Pull request has only one commit and it's not semantic; this may lead to a non-semantic commit in the base branch (see https://github.community/t/how-to-change-the-default-squash-merge-commit-message/1155). Amend the commit message to match the pull request title, or add another commit.`
+              );
+            }
+          }
+        }
       } catch (error) {
         validationError = error;
       }
@@ -33412,13 +33438,21 @@ module.exports = function parseConfig() {
     wip = ConfigParser.parseBoolean(process.env.INPUT_WIP);
   }
 
+  let validateSingleCommit;
+  if (process.env.INPUT_VALIDATESINGLECOMMIT) {
+    validateSingleCommit = ConfigParser.parseBoolean(
+      process.env.INPUT_VALIDATESINGLECOMMIT
+    );
+  }
+
   return {
     types,
     scopes,
     requireScope,
     wip,
     subjectPattern,
-    subjectPatternError
+    subjectPatternError,
+    validateSingleCommit
   };
 };