fix(remix): update app generator with valid package.json without Prettier (#29218)

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## Current Behavior
<!-- This is the behavior we have today -->
If you don't have Prettier installed, then `nx g @nx/remix:app
apps/myapp` will generate a `package.json` with trailing comma, and `npm
install` fails.

## Expected Behavior
<!-- This is the behavior we should expect with the changes in this PR
-->
`package.json` should be valid without Prettier.

## Related Issue(s)
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merged. -->

Fixes #

packages/remix/src/generators/application/application.impl.spec.ts

@@ -316,8 +316,10 @@ describe('Remix Application', () => {
   });
 
   describe('TS solution setup', () => {
-    it('should add project references when using TS solution', async () => {
+    let tree: Tree;
-      const tree = createTreeWithEmptyWorkspace();
+
+    beforeEach(() => {
+      tree = createTreeWithEmptyWorkspace();
       updateJson(tree, 'package.json', (json) => {
         json.workspaces = ['packages/*', 'apps/*'];
         return json;
@@ -333,7 +335,9 @@ describe('Remix Application', () => {
         files: [],
         references: [],
       });
+    });
 
+    it('should add project references when using TS solution', async () => {
       await applicationGenerator(tree, {
         directory: 'myapp',
         e2eTestRunner: 'playwright',
@@ -523,6 +527,20 @@ describe('Remix Application', () => {
         }
       `);
     });
+
+    it('should generate valid package.json without formatting', async () => {
+      await applicationGenerator(tree, {
+        directory: 'myapp',
+        e2eTestRunner: 'playwright',
+        unitTestRunner: 'jest',
+        addPlugin: true,
+        skipFormat: true,
+      });
+
+      expect(() =>
+        JSON.parse(tree.read('myapp/package.json', 'utf-8'))
+      ).not.toThrow();
+    });
   });
 });
 

packages/remix/src/generators/application/files/ts-solution/package.json__tmpl__

@@ -24,8 +24,7 @@
   <%_ if (name !== projectName) { _%>
     "name": "<%= name %>",<%_ } _%>
     "projectType": "application",
-    "sourceRoot": "<%- projectRoot %>",
+    "sourceRoot": "<%- projectRoot %>"<%_ if (parsedTags?.length) { _%>,
-    <%_ if (parsedTags?.length) { _%>
     "tags": <%- JSON.stringify(parsedTags) %>
     <%_ } _%>
   }<% } %>