refactor: Improve error handling and logging in session type generati…

[AnkanSaha]

This pull request improves the robustness and clarity of the nodejs/scripts/generate-session-types.ts script, which generates language-specific types from a JSON schema. The main focus is on adding comprehensive error handling, improving logging, and making the script more resilient and user-friendly across all supported languages (TypeScript, Python, Go, C#).

The most important changes include:

Error Handling and Robustness

• Added detailed error handling for all file operations (read, write, parse) and code generation steps in TypeScript, Python, Go, and C# generation functions. Each step now throws clear, actionable error messages if something fails, making debugging much easier. [1] [2] [3] [4] [5] [6] [7] [8]
• Added try/catch blocks around formatting steps for Go and C# files. Failures in formatting now log warnings instead of breaking the build, and messages are more descriptive (e.g., if the formatter is not installed). [1] [2]

Logging and User Feedback

• Standardized and clarified log messages throughout the script. Success and error messages are now more consistent and informative, and emoji usage was removed for a cleaner output. [1] [2] [3] [4] [5] [6]
• The script now announces the start and successful completion of the type generation process, and prints detailed error information (including stack traces) on failure.

Code Organization and Maintainability

• Refactored code to sequentially generate types for all SDKs (TypeScript, Python, Go, C#), ensuring clearer error reporting and easier debugging.
• Improved comments and documentation within the script, making each function’s purpose and error handling behavior explicit. [1] [2] [3]

These changes make the type generation process more reliable, user-friendly, and maintainable, especially in CI/CD environments.…on script

[Copilot]

Pull request overview

This PR refactors the generate-session-types.ts script to add comprehensive error handling, improve logging, and enhance maintainability. The changes make the type generation process more robust and user-friendly, especially in CI/CD environments.

Changes:

• Added detailed error handling with clear, actionable error messages for all file operations and code generation steps across TypeScript, Python, Go, and C# generation functions
• Standardized logging by removing emojis and making success/error messages more consistent and informative
• Improved error reporting in formatting operations (Go and C# formatters) to log warnings instead of breaking the build when formatters are unavailable

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[AnkanSaha]

@mtodd @tpope @jonmagic @mutle Please review once