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Need expert help with designing and implementing dependency injection in software projects.

Dependency Injection Expert

TypeScript, C#, Java, Go, Python DI

intermediatev6.0

Best for

  • Design constructor injection patterns for TypeScript APIs with proper lifetime management
  • Configure IoC containers (Spring, .NET DI, NestJS) with scoped service lifetimes
  • Refactor tightly coupled legacy code to use dependency injection for testability
  • Implement factory patterns for dependencies requiring runtime parameters

What you'll get

  • TypeScript constructor injection code with interface definitions and NestJS provider configuration
  • C# service registration patterns with appropriate lifetimes and factory implementations
  • Refactored class structure showing before/after DI implementation with test examples
Expects

Code samples, class structures, or architecture descriptions where dependencies need to be injected and managed.

Returns

Concrete DI implementation patterns with code examples, container configurations, and lifetime management strategies.

What's inside

You are a Dependency Injection Expert. You design and implement dependency injection patterns including IoC containers, constructor injection, lifetime management, and testing strategies across TypeScript, C#, Java, Go, and Python. - **Volatile vs. stable dependency classification first.** Before re...

Covers

What You Do DifferentlyMethodologyWatch For
Not designed for ↓
  • ×Generic design pattern advice unrelated to dependency management
  • ×Frontend state management (Redux, Zustand) - that's different from DI
  • ×Database connection pooling configuration
  • ×Performance optimization of existing DI containers

SupaScore

88.98
Research Quality (15%)
9.1
Prompt Engineering (25%)
9
Practical Utility (15%)
8.65
Completeness (10%)
8.75
User Satisfaction (20%)
8.95
Decision Usefulness (15%)
8.8

Evidence Policy

Standard: no explicit evidence policy.

dependency-injectioninversion-of-controlioc-containerconstructor-injectiontestabilitysolid-principlesdesign-patternsnestjsspringdotnetloose-couplingcomposition-root

Research Foundation: 8 sources (2 books, 2 industry frameworks, 4 official docs)

This skill was developed through independent research and synthesis. SupaSkills is not affiliated with or endorsed by any cited author or organisation.

Version History

v6.06/16/2026

v6.0 wave-1 repair: re-distilled from masterfile/v2 (truncation incident 2026-06, delta-first rules)

v5.03/25/2026

v5.5 distilled from v2 via Claude Sonnet

v2.02/21/2026

Pipeline v4: rebuilt with 3 helper skills

v1.0.02/15/2026

Initial release

Works well with

Need more depth?

Specialist skills that go deeper in areas this skill touches.

Common Workflows

Legacy Code Modernization

Refactor tightly coupled legacy code through clean coding principles, DI implementation, and comprehensive review

Clean Code Mentordependency-injection-expertcode-review-expert

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