Add lint

Author: chokoswitch

.github/workflows/build.yml

@@ -29,4 +29,10 @@ jobs:
         with:
           go-version: '^1.18.4'
           cache: true
+     - name: golangci-lint
+       uses: golangci/golangci-lint-action@v3
+       with:
+         version: 1.48.0
+         skip-pkg-cache: true
+         skip-build-cache: true
       - run: go run mage.go test

.golangci.yml

@@ -0,0 +1,38 @@
+linters:
+  enable:
+    - asasalint
+    - bidichk
+    - bodyclose
+    - decorder
+    - durationcheck
+    - errchkjson
+    - errname
+    - errorlint
+    - execinquery
+    - exhaustive
+    - exportloopref
+    - gocritic
+    - goerr113
+    - gofmt
+    - goimports
+    - goprintffuncname
+    - gosec
+    - importas
+    - misspell
+    - nolintlint
+    - nosnakecase
+    - prealloc
+    - predeclared
+    - promlinter
+    - revive
+    - stylecheck
+    - tagliatelle
+    - tenv
+    - thelper
+    - unconvert
+    - usestdlibvars
+issues:
+  exclude-rules:
+    - path: magefiles/
+      linters:
+        - deadcode

magefiles/magefile.go

@@ -6,8 +6,6 @@ import (
 	"github.com/magefile/mage/sh"
 )
 
-var gosImports = sh.RunCmd("go", "run", fmt.Sprintf("github.com/rinchsan/gosimports/cmd/gosimports@%s", gosImportsVer))
-
 func Build() error {
 	return sh.Run("go", "build", "-o", "build/reassign", "./cmd")
 }
@@ -17,7 +15,11 @@ func Test() error {
 }
 
 func Format() error {
-	return gosImports("-w", ".")
+	return sh.RunV("go", "run", fmt.Sprintf("github.com/rinchsan/gosimports/cmd/gosimports@%s", gosImportsVer), "-w", ".")
+}
+
+func Check() error {
+	return sh.RunV("go", "run", fmt.Sprintf("github.com/golangci/golangci-lint/cmd/golangci-lint@%s", golangCILintVer), "run")
 }
 
 var Default = Build

magefiles/versions.go

@@ -1,3 +1,4 @@
 package main
 
+var golangCILintVer = "v1.48.0"
 var gosImportsVer = "v0.1.5"