fix(nx-plugin): overwrite files array when setting up Vitest (#1646)

Author: brandonroberts

packages/nx-plugin/src/generators/init/lib/update-test-tsconfig.ts

@@ -33,7 +33,7 @@ export function updateTestTsConfig(
         json.compilerOptions.module = undefined;
         json.compilerOptions.target ??= 'es2016';
         json.compilerOptions.types = ['vitest/globals', 'node'];
-        json.files ??= ['src/test-setup.ts'];
+        json.files = ['src/test-setup.ts'];
 
         return json;
       },

packages/nx-plugin/src/generators/setup-vitest/lib/update-tsconfig.ts

@@ -29,7 +29,7 @@ export function updateTsConfig(tree: Tree, schema: SetupVitestGeneratorSchema) {
         json.compilerOptions ??= {};
         json.compilerOptions.module = undefined;
         json.compilerOptions.target ??= 'es2016';
-        json.files ??= ['src/test-setup.ts'];
+        json.files = ['src/test-setup.ts'];
         json.compilerOptions.types = (json.compilerOptions.types ?? ['node'])
           .filter((type) => type !== 'jest')
           .concat(['vitest/globals']);