Fix Pnpm Nx Run Web:typecheck Build Errors

Aug 3, 2025 by Rajiv Sharma 43 views

Troubleshooting pnpm nx run web:typecheck Build Errors: A Comprehensive Guide

Are you encountering build errors when running pnpm nx run web:typecheck? Don't worry, you're not alone! This guide will help you troubleshoot and resolve those pesky issues. We'll cover everything from setup prerequisites to technical guidelines, ensuring you can get your project building smoothly. Let's dive in, guys, and get those builds green!

🚀 Required Setup Steps

Before we start troubleshooting, let's ensure your environment is correctly set up. A proper setup is crucial for a smooth development experience and avoiding common build errors. Following these steps meticulously will save you headaches down the line.

1. Install pnpm Globally

First things first: This project relies on pnpm as its package manager. Using npm or yarn might lead to unexpected issues and errors. To avoid these, make sure you have pnpm installed globally. If you don't have it installed already, here's how you can do it:

npm install -g pnpm

This command installs pnpm globally, making it accessible from your terminal. It's a critical step to ensure compatibility and proper dependency resolution within your project. Remember, pnpm's efficient handling of dependencies can significantly reduce disk space usage and improve installation speed, making it an excellent choice for modern JavaScript projects.

2. Install Project Dependencies

Once pnpm is installed, navigate to your project's root directory in the terminal. The next step is to install all the project dependencies defined in your package.json file. This ensures that all the necessary libraries and tools are available for your project. To do this, run the following command:

pnpm install

This command tells pnpm to read the package.json file and install all the listed dependencies into the node_modules directory. This process might take a few minutes, depending on the number of dependencies and your internet connection speed. While pnpm is installing the dependencies, it's also creating a pnpm-lock.yaml file. This file ensures that the exact versions of the dependencies are used across different environments, preventing version conflicts and ensuring consistent builds. The pnpm-lock.yaml file is crucial for maintaining the integrity of your project's dependencies and should be committed to your version control system.

3. Verify Setup by Running Tests

After installing the dependencies, it's a good practice to verify your setup by running the project's tests. This helps you confirm that all dependencies are correctly installed and that the basic functionality of your project is working as expected. The project includes tests for various components, such as API, PWA (Progressive Web App), and library components. Running these tests early in the development process helps catch any potential issues before they escalate into larger problems. Here are the commands to run tests for different components:

For API Components

pnpm nx test api

This command runs the tests specifically for the API components of your project. API tests are crucial for ensuring the backend functionality of your application works as expected. They typically cover aspects such as data validation, API endpoint behavior, and integration with databases or other external services. Passing these tests gives you confidence that your API is functioning correctly.

For PWA Components

pnpm nx test web

This command executes the tests for the PWA components, focusing on the frontend aspects of your application. PWA tests often cover user interface elements, component interactions, and overall application behavior in a browser environment. Ensuring these tests pass is essential for delivering a smooth and reliable user experience. These tests validate the responsiveness, accessibility, and performance of your web application.

For Library Components

The project is structured into several libraries, each serving a specific purpose. Testing these libraries individually helps ensure the modularity and maintainability of the codebase. Here are the commands to test each library component:

pnpm nx test domain
pnpm nx test application-api
pnpm nx test application-shared
pnpm nx test application-web
pnpm nx test utils-core

Each of these commands runs tests for a specific library. The domain library typically contains the core business logic and entities of your application. The application-api library might include application services related to APIs. The application-shared library could contain shared components and utilities used across the application. The application-web library likely focuses on web-specific application logic. The utils-core library often includes utility functions and helper methods. By testing each library individually, you can isolate issues and ensure that each component functions correctly.

✅ You're ready to work on this issue once these commands run successfully!

If all the above test commands run successfully, congratulations! Your environment is properly set up, and you're ready to tackle the build errors. This thorough setup verification ensures a solid foundation for your development work.

Comprehensive Plan Description

Now that we have the setup out of the way, let's focus on the main goal: fixing the build errors when pnpm nx run web:typecheck is executed. This command is essential for ensuring the TypeScript code in your web application is correctly typed and free of errors. TypeScript's type checking helps catch potential issues early in the development process, preventing runtime errors and improving code quality. Therefore, resolving these build errors is crucial for maintaining a robust and reliable application.

To effectively fix these errors, we'll need to understand the error messages, identify the root causes, and implement the necessary corrections. This might involve modifying TypeScript code, updating dependencies, or adjusting build configurations. The process requires a systematic approach, careful analysis, and attention to detail. We'll break down the steps involved in troubleshooting and resolving these errors to ensure a clear and efficient workflow.

Acceptance Criteria

To ensure we've successfully fixed the build errors, we need to define clear acceptance criteria. These criteria will serve as a checklist to verify that the implementation meets the required standards and specifications. Let's make sure we cover all bases!

Implementation

[ ] All features described in the plan are implemented.
[ ] Code follows existing patterns and best practices. Adhering to established coding patterns and best practices ensures consistency and maintainability. This includes following naming conventions, using appropriate design patterns, and writing clean, readable code. By aligning with existing patterns, the new code seamlessly integrates into the codebase.
[ ] All functionality works as specified. Each feature and function should operate according to its intended design and requirements. This involves verifying that inputs produce the correct outputs, that edge cases are handled appropriately, and that the overall functionality meets the expectations of the users and stakeholders. Thorough testing is essential to confirm that the functionality is working as specified.
[ ] Integration with existing codebase is seamless. The new code should integrate smoothly with the existing codebase without introducing conflicts or breaking existing functionality. This requires careful consideration of dependencies, interfaces, and interactions between different modules. A seamless integration ensures that the application functions cohesively and that the new code enhances rather than disrupts the existing system.

Code Quality

[ ] Code is clean, readable, and well-documented. Clean code is easier to understand, maintain, and debug. This involves using meaningful variable and function names, keeping functions short and focused, and avoiding unnecessary complexity. Readability is enhanced by consistent formatting, clear structure, and the use of comments to explain complex logic. Well-documented code includes explanations of the purpose, usage, and limitations of each component, making it easier for other developers to work with the code in the future.
[ ] TypeScript types are properly defined. TypeScript's type system helps catch errors at compile time, preventing runtime issues and improving code reliability. Properly defining types for variables, functions, and data structures ensures that the code behaves as expected and that type-related errors are caught early in the development process. This includes using specific types instead of any, defining interfaces for data structures, and using generic types appropriately.
[ ] Error handling is comprehensive. Robust error handling is essential for preventing application crashes and providing informative feedback to users. This involves anticipating potential errors, handling exceptions gracefully, and providing meaningful error messages. Comprehensive error handling includes logging errors for debugging purposes and implementing strategies for error recovery, such as retrying operations or providing alternative workflows. Validation errors must also be handled gracefully to give good feedback and avoid the system to crash.
[ ] Performance considerations are addressed. Performance is a critical aspect of software quality, and addressing performance considerations early in the development process can prevent issues later on. This involves using efficient algorithms and data structures, optimizing database queries, and minimizing resource consumption. Performance testing and profiling can help identify bottlenecks and areas for improvement.

Testing

[ ] Unit tests cover all new functionality. Unit tests verify that individual units of code, such as functions or classes, work correctly in isolation. Writing unit tests for all new functionality ensures that each component is thoroughly tested and that errors are caught early in the development process. Unit tests should cover a range of inputs and edge cases to ensure the robustness of the code.
[ ] Integration tests verify end-to-end workflows. Integration tests ensure that different components of the application work together correctly. These tests verify the interactions between modules, services, and external systems. Integration tests help identify issues that may not be apparent in unit tests, such as compatibility problems or incorrect data flow. End-to-end workflows are tested to ensure the application works as a whole.
[ ] E2E tests cover user-facing features. End-to-end (E2E) tests simulate user interactions with the application, verifying that user-facing features work as expected. These tests cover the entire application stack, from the user interface to the database. E2E tests help ensure that the application provides a seamless user experience and that all features are functioning correctly from the user's perspective.
[ ] All existing tests continue to pass. Ensuring that existing tests continue to pass is crucial for preventing regressions and maintaining the stability of the application. Changes to the codebase should not break existing functionality, and running all tests after making changes helps verify this. This involves not only running unit tests but also integration and end-to-end tests to ensure overall system stability.

Documentation

[ ] Code is properly commented. Comments in the code explain the purpose, functionality, and usage of different components, making it easier for other developers to understand and maintain the code. Comments should be clear, concise, and up-to-date, providing context and insights into the code's design and implementation. Proper commenting enhances code readability and maintainability.
[ ] API documentation is updated. API documentation describes the endpoints, request formats, and response structures of the application's APIs, making it easier for other developers to integrate with the system. Updated API documentation ensures that the documentation accurately reflects the current state of the API and that developers have the information they need to use the API effectively. Tools like Swagger or OpenAPI can be used to generate documentation automatically.
[ ] README files are updated if needed. README files provide an overview of the project, including instructions for setting up the development environment, building the application, and running tests. If any changes are made to the project's setup or build process, the README files should be updated to reflect these changes. A well-maintained README file is essential for onboarding new developers and ensuring that everyone has the information they need to work on the project.
[ ] Architecture decisions are documented. Documenting architecture decisions helps to provide context and rationale for the design choices made in the application. This documentation should explain the reasons behind the architecture, the trade-offs considered, and the overall structure of the system. Documenting architecture decisions helps ensure that the architecture is well-understood and that future changes are made in a consistent and informed manner.

Deployment & CI/CD

[ ] Changes work in all environments. Ensuring that changes work correctly in all environments, such as development, testing, and production, is crucial for a smooth deployment process. This involves testing the changes in each environment to identify and resolve any environment-specific issues. Differences in configurations, dependencies, and infrastructure can lead to issues that are only apparent in certain environments.
[ ] CI/CD pipeline passes successfully. The Continuous Integration/Continuous Deployment (CI/CD) pipeline automates the process of building, testing, and deploying the application. Ensuring that the CI/CD pipeline passes successfully means that all automated checks, such as builds, tests, and linters, are passing. A successful CI/CD pipeline ensures that the application is built and deployed consistently and reliably.
[ ] No breaking changes introduced. Introducing breaking changes can disrupt existing functionality and require significant effort to resolve. Ensuring that no breaking changes are introduced involves carefully considering the impact of changes on existing code and APIs. Versioning and deprecation strategies can help manage breaking changes in a controlled manner.
[ ] Database migrations (if any) are tested. Database migrations are changes to the database schema or data. Testing database migrations ensures that the changes are applied correctly and that no data loss or corruption occurs. Database migrations should be tested in a non-production environment before being applied to production.

Clean Architecture Compliance

[ ] Dependencies flow in the correct direction. In a clean architecture, dependencies should flow from outer layers to inner layers, with the domain layer being the most independent. Ensuring that dependencies flow in the correct direction helps maintain the separation of concerns and prevents tightly coupled code. This also makes the code more modular and testable.
[ ] Business logic is separated from infrastructure. Separating business logic from infrastructure code makes the application more flexible and maintainable. Business logic should be encapsulated in the domain layer, while infrastructure concerns, such as database access and external APIs, should be handled in separate layers. This separation allows the business logic to evolve independently of the infrastructure.
[ ] Domain layer remains independent. The domain layer should be independent of any external frameworks or libraries, focusing solely on the core business logic and entities. Maintaining the independence of the domain layer ensures that the business logic is not tied to any specific technology and that it can be easily adapted to new requirements.
[ ] Proper abstraction layers are maintained. Abstraction layers help to decouple different parts of the application, making it more modular and maintainable. These layers define interfaces and contracts that allow components to interact without knowing the details of each other's implementation. Maintaining proper abstraction layers is essential for building a flexible and scalable application.

Technical Implementation Guidelines

To ensure a high-quality implementation, let's follow these technical guidelines, guys. These guidelines cover Clean Architecture principles, code quality standards, and performance considerations, providing a comprehensive framework for building robust and maintainable software.

Clean Architecture Principles

1. Dependency Direction:

Outer layers depend on inner layers only.
Domain layer has no external dependencies.
Application layer orchestrates domain logic.
Infrastructure implements interfaces from inner layers.

These principles ensure that the core business logic remains independent of external frameworks and technologies, making the application more flexible and maintainable. The domain layer, at the heart of the application, defines the business entities and rules. The application layer uses the domain layer to implement use cases. The infrastructure layer provides the necessary implementations for external services and frameworks. Following this dependency direction helps to keep the code clean and organized.

2. Layer Organization:

Domain Core: Business entities, value objects, domain services
Application Core: Use cases, application services, DTOs
Infrastructure: Database, external APIs, framework-specific code

Organizing the code into these layers helps to separate concerns and improve maintainability. The domain core contains the business-specific logic and entities. The application core implements the use cases of the application, using the domain core. The infrastructure layer provides the implementations for external services and frameworks, such as databases and APIs. This clear separation of concerns makes the code more modular and easier to test.

3. SOLID Principles:

Single Responsibility: Each class has one reason to change
Open/Closed: Open for extension, closed for modification
Liskov Substitution: Subtypes must be substitutable for base types
Interface Segregation: Many specific interfaces vs few general ones
Dependency Inversion: Depend on abstractions, not concretions

The SOLID principles are a set of guidelines for writing maintainable and scalable code. The Single Responsibility Principle states that a class should have only one reason to change. The Open/Closed Principle suggests that software entities should be open for extension but closed for modification. The Liskov Substitution Principle ensures that subtypes can be used in place of their base types without altering the correctness of the program. The Interface Segregation Principle advises that many specific interfaces are better than a few general ones. The Dependency Inversion Principle recommends that high-level modules should not depend on low-level modules but both should depend on abstractions.

Code Quality Standards

1. TypeScript Usage:

Use strict mode and proper type definitions.
Avoid any type, use specific types or unknown.
Define interfaces for all data structures.
Use generic types appropriately.

TypeScript's type system helps to catch errors at compile time, making the code more reliable. Using strict mode enforces stricter type checking, helping to identify potential issues. Avoiding the any type and using specific types or unknown improves type safety. Defining interfaces for data structures provides clear contracts and makes the code more maintainable. Using generic types allows for writing reusable code that can work with different types.

2. Error Handling:

Use Result/Either patterns for error handling.
Provide meaningful error messages.
Log errors at appropriate levels.
Handle edge cases and validation errors.

Robust error handling is crucial for building reliable applications. Using Result/Either patterns provides a structured way to handle errors. Meaningful error messages help in diagnosing issues. Logging errors at appropriate levels allows for tracking and analyzing errors in production. Handling edge cases and validation errors ensures that the application behaves correctly in all scenarios.

3. Testing Strategy:

Unit tests for business logic (domain layer)
Integration tests for application services
E2E tests for complete user workflows
Mock external dependencies appropriately

A comprehensive testing strategy is essential for ensuring the quality of the code. Unit tests verify that individual components work correctly. Integration tests ensure that different parts of the application work together. E2E tests simulate user interactions and verify that the application functions correctly from the user's perspective. Mocking external dependencies allows for testing components in isolation.

Performance Considerations

Use efficient algorithms and data structures.
Implement proper caching strategies.
Consider database query optimization.
Handle async operations properly.
Monitor memory usage and potential leaks.

Performance is a critical aspect of software quality. Using efficient algorithms and data structures can significantly improve performance. Implementing caching strategies reduces the load on the server and improves response times. Optimizing database queries can reduce the time it takes to retrieve data. Handling async operations properly prevents blocking the main thread and improves responsiveness. Monitoring memory usage and potential leaks helps to prevent memory-related issues.

Development Commands Reference

Here's a handy reference for development commands. Keep these in your toolbox!

Development Commands:

pnpm dev - Start development server
pnpm build - Build the application
pnpm preview - Preview the built application

Testing Commands:

pnpm test - Run all tests
pnpm test:watch - Run tests in watch mode
pnpm test:coverage - Run tests with coverage
pnpm domain - Test domain
pnpm application - Test application-shared
pnpm utils - Test utils-core

API Testing:

pnpm test:api - Run API tests
pnpm endapi - Run API E2E tests
pnpm e2e:postman - Run Postman tests

UI Testing:

pnpm test:web - Run PWA tests
pnpm endweb - Run PWA E2E tests
pnpm playwright - Run Playwright tests

Code Quality:

pnpm lint - Run linting
pnpm lint:fix - Fix linting issues
pnpm format - Format code
pnpm typecheck - Check TypeScript types

Coverage Analysis:

pnpm covapi - API coverage
pnpm covweb - PWA coverage
pnpm covdomain - Domain coverage
pnpm covapplication - Application coverage
pnpm covutils - Utils coverage

⚠️ CRITICAL: Commit Message Guidelines

🚨 FAILURE TO FOLLOW THESE RULES WILL CAUSE COMMIT FAILURES! 🚨

Commit messages are crucial for maintaining a clear and understandable project history. Following a consistent commit message format helps to track changes, revert errors, and collaborate effectively. The project has specific guidelines for commit messages, and adhering to these guidelines is mandatory. Failure to follow these rules will result in commit failures, so pay close attention!

Format: type(scope): subject

The commit message format consists of three parts: the type, the scope, and the subject. The type indicates the kind of change being made, such as a new feature, a bug fix, or a refactoring. The scope specifies the part of the codebase that is being affected, such as the API, web, or domain layer. The subject provides a brief description of the change. This structured format helps to quickly understand the purpose and context of each commit.

Example: feat(api): implement user authentication system

This example shows a commit message for a new feature related to the user authentication system in the API. The type is feat, the scope is api, and the subject is implement user authentication system. This clear and concise message conveys the purpose of the commit effectively.

Available Types:

feat - A new feature (most common for comprehensive plans)
fix - A bug fix
refactor - Code changes that neither fix bugs nor add features
perf - Performance improvements
test - Adding missing tests or correcting existing tests
docs - Documentation only changes
style - Formatting changes
build - Build system or dependency changes
ci - CI configuration changes
chore - Other changes

These types provide a standardized vocabulary for categorizing changes in the codebase. Using the appropriate type helps to organize the commit history and makes it easier to search for specific changes. The feat type is commonly used for new features, while fix is used for bug fixes. refactor indicates code changes that improve the structure or readability of the code without adding new functionality or fixing bugs. perf is used for performance improvements, and test is used for changes related to testing. docs is used for documentation changes, style for formatting changes, build for build system or dependency changes, ci for CI configuration changes, and chore for other miscellaneous changes.

Scope Rules (REQUIRED):

Use kebab-case (lowercase with hyphens)
Examples: api, web, domain, application-shared, utils-core`
Use auth, api, ui, database for feature-specific scopes

The scope provides context about the part of the codebase that is being changed. Using kebab-case (lowercase with hyphens) ensures consistency in the scope naming. Common scopes include api, web, domain, application-shared, and utils-core, representing different layers or modules in the application. Feature-specific scopes, such as auth, api, ui, and database, can be used to further clarify the context of the change.

Subject Rules (REQUIRED):

Start with lowercase letter or number
No period at the end
Header length limits vary by scope:
- api-e2e, web-e2e, application-shared`: max 100 characters
- domain: max 95 characters
- api, web: max 93 characters
- utils-core: max 90 characters
- All other scopes: max 82 characters
Be descriptive and specific about what was implemented

The subject should provide a concise and descriptive summary of the change. Starting with a lowercase letter or number and avoiding a period at the end helps to maintain consistency and readability. The header length limits vary by scope to ensure that the commit messages remain concise and informative. The subject should be descriptive and specific about what was implemented, providing enough context for other developers to understand the change.

Multi-commit Guidelines:

For large implementations, break into logical commits:

feat(domain): add user entity and value objects
feat(application-shared): implement authentication use cases
feat(api): add authentication endpoints
test(api): add comprehensive auth tests

Breaking large implementations into logical commits makes it easier to review and understand the changes. Each commit should focus on a specific aspect of the implementation, such as adding entities, implementing use cases, or adding API endpoints. This approach makes the commit history more organized and helps to isolate issues if they arise.

Reference: See commitlint.config.ts and .husky/commit-msg for complete rules

For a complete reference of the commit message guidelines, refer to the commitlint.config.ts and .husky/commit-msg files in the project. These files contain the detailed rules and configurations for commit message validation.

⚠️ Your commits will be automatically rejected if they don't follow these rules!

It's crucial to follow the commit message guidelines to ensure that your commits are accepted. The commitlint tool automatically validates commit messages, and commits that do not adhere to the rules will be rejected. This helps to maintain a consistent and informative commit history.

Additional Context

No response

Conclusion

By following this comprehensive guide, you should be well-equipped to troubleshoot and fix build errors when running pnpm nx run web:typecheck. Remember to verify your setup, adhere to technical guidelines, and follow commit message conventions. With a systematic approach and attention to detail, you can ensure a smooth development process and a robust application. Keep coding, guys!