End-to-End Feature Implementation Workflow

AI-generated five-stage checklist for requirements, architecture, implementation, edge cases and verification. Replace its example commands with working project commands.

Tags: workflow, lifecycle, tdd, engineering-process, verification

Category: coding

Listing attribution: SimplyUtils

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End-to-End Feature Implementation Workflow

This workflow guides an AI coding agent through delivering a production-ready feature with minimal regressions.

graph TD
  A[Step 1: Requirements Discovery] --> B[Step 2: Architecture & Schema Design]
  B --> C[Step 3: Test-Driven Implementation]
  C --> D[Step 4: Integration & Edge Case Handling]
  D --> E[Step 5: Verification & Quality Gate]

Step 1: Requirements Discovery & Context Mapping

  • Read the user request or ticket.
  • Search the codebase for existing related functions, types, and UI components.
  • Confirm external dependencies, API contracts, and user interactions.

Step 2: Architecture & Schema Design

  • Update or create shared types in shared/schema.ts.
  • Write Zod validation schemas for all inputs.
  • Formulate database migration steps if schema changes are required.

Step 3: Test-Driven Implementation (TDD)

  • Create a test file in tests/ covering the core business rules.
  • Run tests and confirm failure (Red).
  • Implement the minimal working code in the service/component layers.
  • Re-run tests and confirm passing (Green).

Step 4: UI & Edge Case Handling

  • Connect the business logic to the UI component.
  • Implement loading states (skeletons/spinners), error boundaries, and empty states.
  • Ensure accessibility (keyboard navigation, ARIA attributes).

Step 5: Verification & Quality Gate

  • Run full type-check: npm run check.
  • Run linter: npm run lint.
  • Run automated tests: npm test.
  • Provide a clear summary with manual verification steps for the user.