I can't manage to make Vitest work with a new standalone ionic-angular project

Hi everyone!
I’m trying to install Vitest on a newly created Ionic-angular project and I’m getting into troubles. I followed this article to install Vitest :

But ng test ends with this error:

Cannot use import statement outside a module
Module /node_modules/.pnpm/@ionic+core@7.8.4/node_modules/@ionic/core/components/ion-back-button.js:4
 seems to be an ES Module but shipped in a CommonJS package.
You might want to create an issue to the package "@ionic/core" asking them to ship the file in .mjs extension or add "type": "module" in their package.json.

As it is suggested, I have updated the vite.config.mts file :

export default defineConfig(({ mode }) => {
  return {
    plugins: [angular()],
    test: {
      globals: true,
      environment: 'jsdom',
      setupFiles: ['src/test-setup.ts'],
      include: ['**/*.spec.ts'],
      reporters: ['default'],
      server: {
        deps: {
          inline: ["@ionic/core"]
        }
      }
    },
    define: {
      'import.meta.vitest': mode !== 'production',
    },
  };
});

but ng test ends with the same error.
Has anyone managed to make it work ?