Fix MainFileEvaluationError

✅ Solution

The "MainFileEvaluationError" in Nx often arises from issues with module resolution, especially when using non-standard file extensions or paths without specifying them in your TypeScript or Storybook configuration. To fix it, ensure all imported files (e.g., extensionless TypeScript files or those with custom extensions) are properly resolved by configuring `tsconfig.json` (including `compilerOptions.paths`, `compilerOptions.baseUrl`), or updating Storybook's `webpackFinal` configuration to include the necessary resolvers and loaders for those file types. Consider adding `@nx/js:tsc` executor in the target configuration, specifying the `tsConfig` option to ensure proper TS compilation before other tasks are run.