go-stdlib

Idiomatic Go 1.22+ rules: stdlib net/http with mux, error wrapping, context discipline, no framework lock-in.

npx rulepack add go-stdlib

What it covers

HTTP with the standard library: http.ServeMux and method-aware patterns (mux.HandleFunc("GET /users/{id}", h)) — no gin/echo/chi without a hard requirement
Error wrapping via fmt.Errorf("...: %w", err) so callers can errors.Is / errors.As, with package-level sentinel errors and typed errors that Unwrap()
Context discipline: context.Context as the first param of any blocking call, never stored in a struct, with a clear goroutine shutdown path
Concurrency with errgroup.Group for fan-out plus first-error semantics; no fire-and-forget goroutines
JSON via encoding/json with explicit struct tags, plus gofmt -s, goimports, go vet, and staticcheck cleanliness

Rules align with the Go standard library & official documentation: https://pkg.go.dev/std

MIT