Adds golint config and ci step

.github/workflows/main.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: ['1.19.x', '1.20.x', '1.21.x']
+        go-version: ['1.21.x']
     steps:
       - uses: actions/checkout@v3
       - name: Setup Go ${{ matrix.go-version }}
@@ -16,6 +16,10 @@ jobs:
           go-version: ${{ matrix.go-version }}
       - name: Display Go version
         run: go version
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: v1.54
       - name: Build
         run: go build -v ./...
       - name: Test

.golangci.yml

@@ -0,0 +1,62 @@
+linters-settings:
+  errcheck:
+    check-type-assertions: true
+  goconst:
+    min-len: 2
+    min-occurrences: 3
+  gocritic:
+    enabled-tags:
+      - diagnostic
+      - experimental
+      - opinionated
+      - performance
+      - style
+  govet:
+    check-shadowing: true
+    enable:
+      - fieldalignment
+  nolintlint:
+    require-explanation: true
+    require-specific: true
+
+linters:
+  disable-all: true
+  enable:
+    - bodyclose
+    - deadcode
+    - depguard
+    - dogsled
+    - dupl
+    - errcheck
+    - exportloopref
+    - exhaustive
+    - goconst
+    - gocritic
+    - gofmt
+    - goimports
+    - gomnd
+    - gocyclo
+    - gosec
+    - gosimple
+    - govet
+    - ineffassign
+    - misspell
+    - nolintlint
+    - nakedret
+    - prealloc
+    - predeclared
+    - revive
+    - staticcheck
+    - structcheck
+    - stylecheck
+    - thelper
+    - tparallel
+    - typecheck
+    - unconvert
+    - unparam
+    - varcheck
+    - whitespace
+    - wsl
+
+run:
+  issues-exit-code: 1

Makefile

@@ -1,2 +1,5 @@
 test:
-	go test -v --race ./...
+	go test -v --race ./...
+
+lint:
+	golangci-lint run