$npx -y skills add JamesPrial/claudefiles --skill vet --agent claude-code
Installs into .claude/skills of the current project.
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---
name: go-vet
description: Fix go vet warnings
---
# go vet
Built-in static analyzer that catches common mistakes.
## Usage
```bash
go vet ./...
go vet ./pkg/...
```
## Common Warnings
### Printf Format Mismatch
```go
// Bad
fmt.Printf("%d", "string")
// Good
fmt.Printf("%s", "string")
```
### Unreachable Code
```go
// Bad
return value
fmt.Println("never runs")
// Good
fmt.Println("runs")
return value
```
### Composite Literal Uses Unkeyed Fields
```go
// Bad
Person{"Alice", 30}
// Good
Person{Name: "Alice", Age: 30}
```
### Nil Dereference
```go
// Bad
var p *int
fmt.Println(*p)
// Good
if p != nil {
fmt.Println(*p)
}
```
### Suspicious Mutex Usage
```go
// Bad - mutex copied
func process(mu sync.Mutex) {
mu.Lock()
}
// Good - pass pointer
func process(mu *sync.Mutex) {
mu.Lock()
}
```
### Lost Context
```go
// Bad
ctx := context.TODO()
// Good
ctx := context.Background()
// or accept ctx as parameter
```
## Fix All Issues
```bash
go vet ./... 2>&1 | tee vet.log
```
