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Engineering Standards

Use when writing or refactoring Java, Spring Boot, React, or TypeScript code to ensure clean code, SOLID principles, immutability, and robust exception handling.

SahilKhan30 Updated
Web & Frontend

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Engineering Standards Skill

Purpose

Enforce clean code practices, SOLID principles, immutability, and strong error handling across full-stack financial codebases.

1. Core Principles

MANDATORY

  • Immutability: Use Java record types for DTOs/API contracts and TypeScript readonly / immutable patterns.
  • Explicit Error Handling: Centralize exception handling in Spring @RestControllerAdvice and React Error Boundaries.
  • Fail Fast: Validate request payloads using standard annotations (@NotNull, @NotBlank, @Positive) at REST boundaries.

MUST NOT

  • Catch generic Exception blindly without logging or proper HTTP status mapping.
  • Suppress stack traces or return empty generic error bodies (500 Internal Error without error code).
  • Invent requirements or force unneeded abstractions.

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