fix(release): do not add groups to commit message when their projects have no changes

packages/nx/src/command-line/release/utils/shared.spec.ts

@@ -70,6 +70,71 @@ describe('shared', () => {
         `);
       });
 
+      it('should not add release groups to the commit message whose projects have no changes', () => {
+        const releaseGroups: ReleaseGroupWithName[] = [
+          {
+            name: 'one',
+            projectsRelationship: 'independent',
+            projects: ['foo'], // single project, will get flattened in the final commit message
+            version: {
+              conventionalCommits: false,
+              generator: '@nx/js:version',
+              generatorOptions: {},
+            },
+            changelog: false,
+            releaseTagPattern: '{projectName}-{version}',
+            versionPlans: false,
+          },
+          {
+            name: 'two',
+            projectsRelationship: 'fixed',
+            projects: ['bar', 'baz'],
+            version: {
+              conventionalCommits: false,
+              generator: '@nx/js:version',
+              generatorOptions: {},
+            },
+            changelog: false,
+            releaseTagPattern: '{projectName}-{version}',
+            versionPlans: false,
+          },
+        ];
+        const releaseGroupToFilteredProjects = new Map()
+          .set(releaseGroups[0], new Set(['foo']))
+          .set(releaseGroups[1], new Set(['bar', 'baz']));
+        const versionData = {
+          foo: {
+            currentVersion: '1.0.0',
+            dependentProjects: [],
+            newVersion: '1.0.1',
+          },
+          bar: {
+            currentVersion: '1.0.0',
+            dependentProjects: [],
+            newVersion: null, // no changes
+          },
+          baz: {
+            currentVersion: '1.0.0',
+            dependentProjects: [],
+            newVersion: null, // no changes
+          },
+        };
+        const userCommitMessage =
+          'chore(release): publish {projectName} v{version}';
+        const result = createCommitMessageValues(
+          releaseGroups,
+          releaseGroupToFilteredProjects,
+          versionData,
+          userCommitMessage
+        );
+        expect(result).toMatchInlineSnapshot(`
+          [
+            "chore(release): publish",
+            "- project: foo 1.0.1",
+          ]
+        `);
+      });
+
       it('should interpolate the {projectName} and {version} within the main commit message if a single project within a single independent release group is being committed', () => {
         const releaseGroups: ReleaseGroupWithName[] = [
           {

packages/nx/src/command-line/release/utils/shared.ts

@@ -212,14 +212,15 @@ export function createCommitMessageValues(
 
     // One entry for the whole group for fixed groups
     const projectVersionData = versionData[releaseGroupProjectNames[0]]; // all at the same version, so we can just pick the first one
-    const releaseVersion = new ReleaseVersion({
-      version: projectVersionData.newVersion,
-      releaseTagPattern: releaseGroup.releaseTagPattern,
-    });
-
-    commitMessageValues.push(
-      `- release-group: ${releaseGroup.name} ${releaseVersion.rawVersion}`
-    );
+    if (projectVersionData.newVersion !== null) {
+      const releaseVersion = new ReleaseVersion({
+        version: projectVersionData.newVersion,
+        releaseTagPattern: releaseGroup.releaseTagPattern,
+      });
+      commitMessageValues.push(
+        `- release-group: ${releaseGroup.name} ${releaseVersion.rawVersion}`
+      );
+    }
   }
 
   return commitMessageValues;