Name: golang-dependency-injection
Rating: 82.41000000000001 (1 reviews)
Author: samber

golang-dependency-injection

Comprehensive guide for dependency injection (DI) in Golang. Covers why DI matters (testability, loose coupling, separation of concerns, lifecycle management), manual constructor injection, and DI library comparison (google/wire, uber-go/dig, uber-go/fx, samber/do). Use this skill when designing service architecture, setting up dependency injection, refactoring tightly coupled code, managing singletons or service factories, or when the user asks about inversion of control, service containers, or wiring dependencies in Go. For a specific DI library, → See `samber/cc-skills-golang@golang-google-wire`, `samber/cc-skills-golang@golang-uber-dig`, `samber/cc-skills-golang@golang-uber-fx`, or `samber/cc-skills-golang@golang-samber-do` skills.

1.00x

Quality

86%

Does it follow best practices?

Impact

100%

1.00x

Average score across 2 eval scenarios

Securityby

Passed

No findings from the security scan

Evaluation results

100%

Dependency Injection Migration Plan

DI migration plan for tightly coupled Go codebase

Criteria

Without this skill

With this skill

Global DB var identified

100%

init() DB setup identified

100%

Global mailer var identified

100%

Constructor injection proposed for globals

100%

Concrete store dependency identified

100%

Concrete mailer dependency identified

100%

Interface defined at consumer

100%

Service-locator identified

100%

Service-locator replacement proposed

100%

DI library recommendation present

100%

Small project → manual or lightweight library

100%

refactoring-steps.md produced

100%

Three sections present

100%

E-Commerce Service Setup with uber-go/fx

uber-go/fx domain modules and lifecycle hooks

The agent wrote 999 files outside the evaluated workspace (Without this skill)

These are not visible to scoring or included in the download.

/home/agent/go/pkg/mod/cache/download/github.com/davecgh/go-spew/@v/list

/home/agent/go/pkg/mod/cache/download/github.com/davecgh/go-spew/@v/v1.1.1.lock

/home/agent/go/pkg/mod/cache/download/github.com/davecgh/go-spew/@v/v1.1.1.mod

/home/agent/go/pkg/mod/cache/download/github.com/davecgh/go-spew/@v/v1.1.1.zip

/home/agent/go/pkg/mod/cache/download/github.com/davecgh/go-spew/@v/v1.1.1.ziphash

The agent wrote 3156 files outside the evaluated workspace (With this skill)

These are not visible to scoring or included in the download.

/home/agent/go/pkg/mod/cache/download/github.com/cespare/xxhash/v2/@v/list

/home/agent/go/pkg/mod/cache/download/github.com/cespare/xxhash/v2/@v/v2.1.2.info

/home/agent/go/pkg/mod/cache/download/github.com/cespare/xxhash/v2/@v/v2.1.2.lock

/home/agent/go/pkg/mod/cache/download/github.com/cespare/xxhash/v2/@v/v2.1.2.mod

/home/agent/go/pkg/mod/cache/download/github.com/cespare/xxhash/v2/@v/v2.1.2.zip

Criteria

Without this skill

With this skill

Infra module grouping

100%

User domain module

100%

Order domain module

100%

Multiple modules used

100%

No flat wiring

100%

Lifecycle parameter

100%

Hook registration

100%

OnStart hook

100%

OnStop hook

100%

Stateful resource lifecycle

100%

Repository: samber/cc-skills-golang
Path: skills/golang-dependency-injection/SKILL.md
Commit: 19a0626

Evaluated: 7 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

E-Commerce Service Setup with uber-go/fx Dependency Injection Migration Plan

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