Use 'Unnamed Manifest' as catchall bucket

__tests__/summary.test.ts

@@ -113,7 +113,7 @@ test('groups dependencies with empty manifest paths together', () => {
   summary.addScannedDependencies(changesWithEmptyManifests)
   const text = core.summary.stringify()
 
-  expect(text).toContain('<summary> </summary>')
+  expect(text).toContain('<summary>Unnamed Manifest</summary>')
   expect(text).toContain('castore')
   expect(text).toContain('connection')
   expect(text).toContain('<summary>python/dist-info/METADATA</summary>')

dist/index.js

@@ -976,9 +976,9 @@ function groupDependenciesByManifest(changes) {
     var _a;
     const dependencies = new Map();
     for (const change of changes) {
-        // If the manifest is null or empty, use a space as the key to avoid
+        // If the manifest is null or empty, give it a name now to avoid
         // breaking the HTML rendering later
-        const manifestName = change.manifest || ' ';
+        const manifestName = change.manifest || 'Unnamed Manifest';
         if (dependencies.get(manifestName) === undefined) {
             dependencies.set(manifestName, []);
         }
@@ -45235,9 +45235,9 @@ function groupDependenciesByManifest(changes) {
     var _a;
     const dependencies = new Map();
     for (const change of changes) {
-        // If the manifest is null or empty, use a space as the key to avoid
+        // If the manifest is null or empty, give it a name now to avoid
         // breaking the HTML rendering later
-        const manifestName = change.manifest || ' ';
+        const manifestName = change.manifest || 'Unnamed Manifest';
         if (dependencies.get(manifestName) === undefined) {
             dependencies.set(manifestName, []);
         }

src/utils.ts

@@ -8,9 +8,9 @@ export function groupDependenciesByManifest(
 ): Map<string, Changes> {
   const dependencies: Map<string, Changes> = new Map()
   for (const change of changes) {
-    // If the manifest is null or empty, use a space as the key to avoid
+    // If the manifest is null or empty, give it a name now to avoid
     // breaking the HTML rendering later
-    const manifestName = change.manifest || ' '
+    const manifestName = change.manifest || 'Unnamed Manifest'
 
     if (dependencies.get(manifestName) === undefined) {
       dependencies.set(manifestName, [])