Merge pull request #20 from saschagrunert/golangci-lint

Update golangci-lint to v1.57.1, config and fix lints

.golangci.yml

@@ -3,23 +3,20 @@ run:
   concurrency: 6
   deadline: 5m
 issues:
-  exclude-rules:
-    # counterfeiter fakes are usually named 'fake_<something>.go'
-    - path: fake_.*\.go
-      linters:
-        - gocritic
-        - dupl
 linters:
   disable-all: true
   enable:
+    - asasalint
     - asciicheck
     - bidichk
     - bodyclose
     - containedctx
     - contextcheck
+    - copyloopvar
     - decorder
     - dogsled
     - dupl
+    - dupword
     - durationcheck
     - errcheck
     - errchkjson
@@ -31,6 +28,9 @@ linters:
     - forcetypeassert
     - funlen
     - gci
+    - ginkgolinter
+    - gocheckcompilerdirectives
+    - gochecksumtype
     - gocognit
     - goconst
     - gocritic
@@ -46,13 +46,20 @@ linters:
     - goprintffuncname
     - gosec
     - gosimple
+    - gosmopolitan
     - govet
     - grouper
     - importas
+    - inamedparam
     - ineffassign
+    - interfacebloat
+    - intrange
+    - loggercheck
     - maintidx
     - makezero
+    - mirror
     - misspell
+    - musttag
     - nakedret
     - nestif
     - nilerr
@@ -61,28 +68,39 @@ linters:
     - nolintlint
     - nosprintfhostport
     - paralleltest
+    - perfsprint
     - prealloc
     - predeclared
     - promlinter
+    - protogetter
+    - reassign
     - revive
     - rowserrcheck
+    - sloglint
+    - spancheck
     - sqlclosecheck
     - staticcheck
     - stylecheck
+    - tagalign
     - tagliatelle
     - tenv
+    - testableexamples
+    - testifylint
     - thelper
     - tparallel
     - typecheck
     - unconvert
     - unparam
     - unused
+    - usestdlibvars
     - wastedassign
     - whitespace
     - wrapcheck
+    - zerologlint
     # - cyclop
-    # - forbidigo
+    # - depguard
     # - exhaustruct
+    # - forbidigo
     # - gochecknoglobals
     # - gochecknoinits
     # - goerr113
@@ -105,113 +123,74 @@ linters-settings:
     check-blank: true
   gocritic:
     enabled-checks:
-      # Diagnostic
-      - appendAssign
-      - argOrder
-      - badCall
-      - badCond
+      - appendCombine
       - badLock
       - badRegexp
       - badSorting
+      - badSyncOnceFunc
+      - boolExprSimplify
+      - builtinShadow
       - builtinShadowDecl
-      - caseOrder
-      - codegenComment
       - commentedOutCode
+      - commentedOutImport
       - deferInLoop
-      - deprecatedComment
-      - dupArg
-      - dupBranchBody
-      - dupCase
-      - dupSubExpr
+      - deferUnlambda
+      - docStub
+      - dupImport
       - dynamicFmtString
       - emptyDecl
+      - emptyFallthrough
+      - emptyStringTest
+      - equalFold
       - evalOrder
-      - exitAfterDefer
+      - exposedSyncMutex
       - externalErrorReassign
       - filepathJoin
-      - flagDeref
-      - flagName
-      - mapKey
-      - nilValReturn
-      - offBy1
-      - regexpPattern
-      - returnAfterHttpError
-      - sloppyReassign
-      - sloppyTypeAssert
-      - sortSlice
-      - sprintfQuotedString
-      - sqlQuery
-      - syncMapLoadAndDelete
-      - truncateCmp
-      - unnecessaryDefer
-      - weakCond
-
-      # Performance
-      - appendCombine
-      - equalFold
+      - hexLiteral
+      - httpNoBody
       - hugeParam
+      - importShadow
       - indexAlloc
+      - initClause
+      - methodExprCall
+      - nestingReduce
+      - nilValReturn
+      - octalLiteral
+      - paramTypeCombine
       - preferDecodeRune
+      - preferFilepathJoin
       - preferFprint
       - preferStringWriter
       - preferWriteByte
+      - ptrToRefParam
       - rangeExprCopy
       - rangeValCopy
-      - sliceClear
-      - stringXbytes
-
-      # Style
-      - assignOp
-      - boolExprSimplify
-      - captLocal
-      - commentFormatting
-      - commentedOutImport
-      - defaultCaseOrder
-      - deferUnlambda
-      - docStub
-      - dupImport
-      - elseif
-      - emptyFallthrough
-      - emptyStringTest
-      - exposedSyncMutex
-      - hexLiteral
-      - httpNoBody
-      - ifElseChain
-      - methodExprCall
-      - newDeref
-      - octalLiteral
-      - preferFilepathJoin
       - redundantSprint
-      - regexpMust
+      - regexpPattern
       - regexpSimplify
+      - returnAfterHttpError
       - ruleguard
-      - singleCaseSwitch
-      - sloppyLen
+      - sliceClear
+      - sloppyReassign
+      - sortSlice
+      - sprintfQuotedString
+      - sqlQuery
       - stringConcatSimplify
+      - stringXbytes
       - stringsCompare
-      - switchTrue
+      - syncMapLoadAndDelete
       - timeExprSimplify
+      - todoCommentWithoutDetail
       - tooManyResultsChecker
+      - truncateCmp
       - typeAssertChain
       - typeDefFirst
-      - typeSwitchVar
-      - underef
-      - unlabelStmt
-      - unlambda
-      - unslice
-      - valSwap
-      - whyNoLint
-      - wrapperFunc
-      - yodaStyleExpr
-
-      # Opinionated
-      - builtinShadow
-      - importShadow
-      - initClause
-      - nestingReduce
-      - paramTypeCombine
-      - ptrToRefParam
-      - todoCommentWithoutDetail
       - typeUnparen
+      - uncheckedInlineErr
+      - unlabelStmt
       - unnamedResult
       - unnecessaryBlock
+      - unnecessaryDefer
+      - weakCond
+      - whyNoLint
+      - yodaStyleExpr

hack/verify-golangci-lint.sh

@@ -18,7 +18,7 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-VERSION=v1.54.2
+VERSION=v1.57.1
 URL_BASE=https://raw.githubusercontent.com/golangci/golangci-lint
 URL=$URL_BASE/$VERSION/install.sh
 

mdtoc.go

@@ -17,6 +17,7 @@ limitations under the License.
 package main
 
 import (
+	"errors"
 	"flag"
 	"fmt"
 	"log"
@@ -78,13 +79,13 @@ func main() {
 
 func validateArgs(opts utilityOptions, args []string) error {
 	if len(args) < 1 {
-		return fmt.Errorf("must specify at least 1 file")
+		return errors.New("must specify at least 1 file")
 	}
 	if !opts.Inplace && len(args) > 1 {
-		return fmt.Errorf("non-inplace updates require exactly 1 file")
+		return errors.New("non-inplace updates require exactly 1 file")
 	}
 	if opts.Dryrun && !opts.Inplace {
-		return fmt.Errorf("--dryrun requires --inplace")
+		return errors.New("--dryrun requires --inplace")
 	}
 	return nil
 }

mdtoc_test.go

@@ -95,7 +95,7 @@ func TestDryRun(t *testing.T) {
 				},
 				Inplace: true,
 			}
-			assert.NoError(t, validateArgs(opts, []string{test.file}), test.file)
+			require.NoError(t, validateArgs(opts, []string{test.file}), test.file)
 
 			err := mdtoc.WriteTOC(test.file, opts.Options)
 
@@ -139,7 +139,7 @@ func TestInplace(t *testing.T) {
 			if test.validTOCTags {
 				require.NoError(t, err, test.file)
 			} else {
-				assert.Error(t, err, test.file)
+				require.Error(t, err, test.file)
 			}
 
 			updated, err := os.ReadFile(tmpFile.Name())
@@ -173,10 +173,10 @@ func TestOutput(t *testing.T) {
 					MaxDepth:   mdtoc.MaxHeaderDepth,
 				},
 			}
-			assert.NoError(t, validateArgs(opts, []string{test.file}), test.file)
+			require.NoError(t, validateArgs(opts, []string{test.file}), test.file)
 
 			toc, err := mdtoc.GetTOC(test.file, opts.Options)
-			assert.NoError(t, err, test.file)
+			require.NoError(t, err, test.file)
 
 			if test.expectedTOC != "" {
 				assert.Equal(t, test.expectedTOC, toc, test.file)

pkg/mdtoc/mdtoc.go

@@ -18,6 +18,7 @@ package mdtoc
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"math"
 	"os"
@@ -190,13 +191,13 @@ func WriteTOC(file string, opts Options) error {
 	start, end := findTOCTags(raw)
 
 	if start == -1 {
-		return fmt.Errorf("missing opening TOC tag")
+		return errors.New("missing opening TOC tag")
 	}
 	if end == -1 {
-		return fmt.Errorf("missing closing TOC tag")
+		return errors.New("missing closing TOC tag")
 	}
 	if end < start {
-		return fmt.Errorf("TOC closing tag before start tag")
+		return errors.New("TOC closing tag before start tag")
 	}
 
 	var doc []byte