♻️ Tidy up the codebase (#1613)

* run gofmt

* add t.Helper()

* Simplify assigns

* Simplify make operation

* Remove unused field in struct

* Fix typo

* Run gofumpt ./

* Consistent spacing

* len(...) can never be negative

* Use ReplaceAll

* Simplify operation

* Remove deadcode

* Fix typo

* Tidy up `} else { if ...`

* Fix AssertEqual

* Remove t.Helper() to fix go1.14.15

app.go

@@ -897,7 +897,7 @@ func (app *App) init() *App {
 }
 
 // ErrorHandler is the application's method in charge of finding the
-// appropiate handler for the given request. It searches any mounted
+// appropriate handler for the given request. It searches any mounted
 // sub fibers by their prefixes and if it finds a match, it uses that
 // error handler. Otherwise it uses the configured error handler for
 // the app, which if not set is the DefaultErrorHandler.

app_test.go

@@ -34,6 +34,8 @@ var testEmptyHandler = func(c *Ctx) error {
 }
 
 func testStatus200(t *testing.T, app *App, url string, method string) {
+	t.Helper()
+
 	req := httptest.NewRequest(method, url, nil)
 
 	resp, err := app.Test(req)
@@ -447,7 +449,6 @@ func Test_App_Chaining(t *testing.T) {
 	resp, err = app.Test(req)
 	utils.AssertEqual(t, nil, err, "app.Test(req)")
 	utils.AssertEqual(t, 203, resp.StatusCode, "Status code")
-
 }
 
 func Test_App_Order(t *testing.T) {
@@ -478,8 +479,9 @@ func Test_App_Order(t *testing.T) {
 	utils.AssertEqual(t, nil, err)
 	utils.AssertEqual(t, "123", string(body))
 }
+
 func Test_App_Methods(t *testing.T) {
-	var dummyHandler = testEmptyHandler
+	dummyHandler := testEmptyHandler
 
 	app := New()
 
@@ -515,7 +517,6 @@ func Test_App_Methods(t *testing.T) {
 
 	app.Use("/:john?/:doe?", dummyHandler)
 	testStatus200(t, app, "/john/doe", MethodGet)
-
 }
 
 func Test_App_New(t *testing.T) {
@@ -652,7 +653,6 @@ func Test_App_Static_Group(t *testing.T) {
 	utils.AssertEqual(t, 200, resp.StatusCode, "Status code")
 	utils.AssertEqual(t, false, resp.Header.Get(HeaderContentLength) == "")
 	utils.AssertEqual(t, MIMETextHTMLCharsetUTF8, resp.Header.Get(HeaderContentType))
-
 }
 
 func Test_App_Static_Wildcard(t *testing.T) {
@@ -670,7 +670,6 @@ func Test_App_Static_Wildcard(t *testing.T) {
 	body, err := ioutil.ReadAll(resp.Body)
 	utils.AssertEqual(t, nil, err)
 	utils.AssertEqual(t, true, strings.Contains(string(body), "Test file"))
-
 }
 
 func Test_App_Static_Prefix_Wildcard(t *testing.T) {
@@ -887,7 +886,7 @@ func Test_App_Group_Mount(t *testing.T) {
 }
 
 func Test_App_Group(t *testing.T) {
-	var dummyHandler = testEmptyHandler
+	dummyHandler := testEmptyHandler
 
 	app := New()
 
@@ -937,18 +936,18 @@ func Test_App_Group(t *testing.T) {
 	resp, err := app.Test(httptest.NewRequest(MethodPost, "/test/v1/", nil))
 	utils.AssertEqual(t, nil, err, "app.Test(req)")
 	utils.AssertEqual(t, 200, resp.StatusCode, "Status code")
-	//utils.AssertEqual(t, "/test/v1", resp.Header.Get("Location"), "Location")
+	// utils.AssertEqual(t, "/test/v1", resp.Header.Get("Location"), "Location")
 
 	api.Get("/users", dummyHandler)
 	resp, err = app.Test(httptest.NewRequest(MethodGet, "/test/v1/UsErS", nil))
 	utils.AssertEqual(t, nil, err, "app.Test(req)")
 	utils.AssertEqual(t, 200, resp.StatusCode, "Status code")
-	//utils.AssertEqual(t, "/test/v1/users", resp.Header.Get("Location"), "Location")
+	// utils.AssertEqual(t, "/test/v1/users", resp.Header.Get("Location"), "Location")
 }
 
 func Test_App_Deep_Group(t *testing.T) {
 	runThroughCount := 0
-	var dummyHandler = func(c *Ctx) error {
+	dummyHandler := func(c *Ctx) error {
 		runThroughCount++
 		return c.Next()
 	}

client_test.go

@@ -307,7 +307,6 @@ func Test_Client_Agent_Set_Or_Add_Headers(t *testing.T) {
 			AddBytesKV([]byte("k1"), []byte("v33")).
 			SetBytesKV([]byte("k2"), []byte("v2")).
 			Add("k2", "v22")
-
 	}
 
 	testAgent(t, handler, wrapAgent, "K1v1K1v11K1v22K1v33K2v2K2v22")
@@ -700,7 +699,7 @@ func Test_Client_Agent_MultipartForm_SendFiles(t *testing.T) {
 		fh1, err := c.FormFile("field1")
 		utils.AssertEqual(t, nil, err)
 		utils.AssertEqual(t, fh1.Filename, "name")
-		buf := make([]byte, fh1.Size, fh1.Size)
+		buf := make([]byte, fh1.Size)
 		f, err := fh1.Open()
 		utils.AssertEqual(t, nil, err)
 		defer func() { _ = f.Close() }()
@@ -746,13 +745,15 @@ func Test_Client_Agent_MultipartForm_SendFiles(t *testing.T) {
 }
 
 func checkFormFile(t *testing.T, fh *multipart.FileHeader, filename string) {
+	t.Helper()
+
 	basename := filepath.Base(filename)
 	utils.AssertEqual(t, fh.Filename, basename)
 
 	b1, err := ioutil.ReadFile(filename)
 	utils.AssertEqual(t, nil, err)
 
-	b2 := make([]byte, fh.Size, fh.Size)
+	b2 := make([]byte, fh.Size)
 	f, err := fh.Open()
 	utils.AssertEqual(t, nil, err)
 	defer func() { _ = f.Close() }()
@@ -998,6 +999,8 @@ func Test_Client_Agent_Struct(t *testing.T) {
 	go func() { utils.AssertEqual(t, nil, app.Listener(ln)) }()
 
 	t.Run("success", func(t *testing.T) {
+		t.Parallel()
+
 		a := Get("http://example.com")
 
 		a.HostClient.Dial = func(addr string) (net.Conn, error) { return ln.Dial() }
@@ -1013,6 +1016,7 @@ func Test_Client_Agent_Struct(t *testing.T) {
 	})
 
 	t.Run("pre error", func(t *testing.T) {
+		t.Parallel()
 		a := Get("http://example.com")
 
 		a.HostClient.Dial = func(addr string) (net.Conn, error) { return ln.Dial() }

ctx.go

@@ -301,7 +301,7 @@ func SetParserDecoder(parserConfig ParserConfig) {
 }
 
 func decoderBuilder(parserConfig ParserConfig) interface{} {
-	var decoder = schema.NewDecoder()
+	decoder := schema.NewDecoder()
 	decoder.IgnoreUnknownKeys(parserConfig.IgnoreUnknownKeys)
 	if parserConfig.SetAliasTag != "" {
 		decoder.SetAliasTag(parserConfig.SetAliasTag)
@@ -518,8 +518,8 @@ func (c *Ctx) FormValue(key string, defaultValue ...string) string {
 // https://github.com/jshttp/fresh/blob/10e0471669dbbfbfd8de65bc6efac2ddd0bfa057/index.js#L33
 func (c *Ctx) Fresh() bool {
 	// fields
-	var modifiedSince = c.Get(HeaderIfModifiedSince)
+	modifiedSince := c.Get(HeaderIfModifiedSince)
-	var noneMatch = c.Get(HeaderIfNoneMatch)
+	noneMatch := c.Get(HeaderIfNoneMatch)
 
 	// unconditional request
 	if modifiedSince == "" && noneMatch == "" {
@@ -536,7 +536,7 @@ func (c *Ctx) Fresh() bool {
 
 	// if-none-match
 	if noneMatch != "" && noneMatch != "*" {
-		var etag = c.app.getString(c.fasthttp.Response.Header.Peek(HeaderETag))
+		etag := c.app.getString(c.fasthttp.Response.Header.Peek(HeaderETag))
 		if etag == "" {
 			return false
 		}
@@ -545,7 +545,7 @@ func (c *Ctx) Fresh() bool {
 		}
 
 		if modifiedSince != "" {
-			var lastModified = c.app.getString(c.fasthttp.Response.Header.Peek(HeaderLastModified))
+			lastModified := c.app.getString(c.fasthttp.Response.Header.Peek(HeaderLastModified))
 			if lastModified != "" {
 				lastModifiedTime, err := http.ParseTime(lastModified)
 				if err != nil {
@@ -576,7 +576,6 @@ func (c *Ctx) Get(key string, defaultValue ...string) string {
 // Make copies or use the Immutable setting instead.
 func (c *Ctx) GetRespHeader(key string, defaultValue ...string) string {
 	return defaultString(c.app.getString(c.fasthttp.Response.Header.Peek(key)), defaultValue)
-
 }
 
 // Hostname contains the hostname derived from the X-Forwarded-Host or Host HTTP header.
@@ -662,7 +661,6 @@ func (c *Ctx) JSON(data interface{}) error {
 // By default, the callback name is simply callback.
 func (c *Ctx) JSONP(data interface{}, callback ...string) error {
 	raw, err := json.Marshal(data)
-
 	if err != nil {
 		return err
 	}
@@ -856,7 +854,7 @@ func (c *Ctx) Query(key string, defaultValue ...string) string {
 // QueryParser binds the query string to a struct.
 func (c *Ctx) QueryParser(out interface{}) error {
 	// Get decoder from pool
-	var decoder = decoderPool.Get().(*schema.Decoder)
+	decoder := decoderPool.Get().(*schema.Decoder)
 	defer decoderPool.Put(decoder)
 
 	// Set correct alias tag
@@ -1063,9 +1061,11 @@ func (c *Ctx) Send(body []byte) error {
 	return nil
 }
 
-var sendFileOnce sync.Once
+var (
-var sendFileFS *fasthttp.FS
+	sendFileOnce    sync.Once
-var sendFileHandler fasthttp.RequestHandler
+	sendFileFS      *fasthttp.FS
+	sendFileHandler fasthttp.RequestHandler
+)
 
 // SendFile transfers the file from the given path.
 // The file is not compressed by default, enable this by passing a 'true' argument
@@ -1094,7 +1094,7 @@ func (c *Ctx) SendFile(file string, compress ...bool) error {
 	// Keep original path for mutable params
 	c.pathOriginal = utils.CopyString(c.pathOriginal)
 	// Disable compression
-	if len(compress) <= 0 || !compress[0] {
+	if len(compress) == 0 || !compress[0] {
 		// https://github.com/valyala/fasthttp/blob/master/fs.go#L46
 		c.fasthttp.Request.Header.Del(HeaderAcceptEncoding)
 	}

ctx_test.go

@@ -22,7 +22,6 @@ import (
 	"reflect"
 	"strconv"
 	"strings"
-	"sync"
 	"testing"
 	"text/template"
 	"time"
@@ -403,7 +402,7 @@ func Test_Ctx_BodyParser(t *testing.T) {
 func Test_Ctx_BodyParser_WithSetParserDecoder(t *testing.T) {
 	type CustomTime time.Time
 
-	var timeConverter = func(value string) reflect.Value {
+	timeConverter := func(value string) reflect.Value {
 		if v, err := time.Parse("2006-01-02", value); err == nil {
 			return reflect.ValueOf(v)
 		}
@@ -567,7 +566,6 @@ func Test_Ctx_UserContext(t *testing.T) {
 	t.Run("Nil_Context", func(t *testing.T) {
 		ctx := c.UserContext()
 		utils.AssertEqual(t, ctx, context.Background())
-
 	})
 	t.Run("ValueContext", func(t *testing.T) {
 		testKey := "Test Key"
@@ -634,12 +632,12 @@ func Test_Ctx_Cookie(t *testing.T) {
 	expire := time.Now().Add(24 * time.Hour)
 	var dst []byte
 	dst = expire.In(time.UTC).AppendFormat(dst, time.RFC1123)
-	httpdate := strings.Replace(string(dst), "UTC", "GMT", -1)
+	httpdate := strings.ReplaceAll(string(dst), "UTC", "GMT")
 	cookie := &Cookie{
 		Name:    "username",
 		Value:   "john",
 		Expires: expire,
-		//SameSite: CookieSameSiteStrictMode, // default is "lax"
+		// SameSite: CookieSameSiteStrictMode, // default is "lax"
 	}
 	c.Cookie(cookie)
 	expect := "username=john; expires=" + httpdate + "; path=/; SameSite=Lax"
@@ -1233,7 +1231,6 @@ func Benchmark_Ctx_MultipartForm(b *testing.B) {
 	for n := 0; n < b.N; n++ {
 		h(c)
 	}
-
 }
 
 // go test -run Test_Ctx_OriginalURL
@@ -1452,19 +1449,19 @@ func Test_Ctx_Range(t *testing.T) {
 		err    error
 	)
 
-	result, err = c.Range(1000)
+	_, err = c.Range(1000)
 	utils.AssertEqual(t, true, err != nil)
 
 	c.Request().Header.Set(HeaderRange, "bytes=500")
-	result, err = c.Range(1000)
+	_, err = c.Range(1000)
 	utils.AssertEqual(t, true, err != nil)
 
 	c.Request().Header.Set(HeaderRange, "bytes=500=")
-	result, err = c.Range(1000)
+	_, err = c.Range(1000)
 	utils.AssertEqual(t, true, err != nil)
 
 	c.Request().Header.Set(HeaderRange, "bytes=500-300")
-	result, err = c.Range(1000)
+	_, err = c.Range(1000)
 	utils.AssertEqual(t, true, err != nil)
 
 	testRange := func(header string, start, end int) {
@@ -1827,7 +1824,7 @@ func Benchmark_Ctx_JSONP(b *testing.B) {
 		Name: "Grame",
 		Age:  20,
 	}
-	var callback = "emit"
+	callback := "emit"
 	var err error
 	b.ReportAllocs()
 	b.ResetTimer()
@@ -1951,7 +1948,6 @@ func Test_Ctx_Render(t *testing.T) {
 }
 
 type testTemplateEngine struct {
-	mu        sync.Mutex
 	templates *template.Template
 }
 
@@ -2077,7 +2073,7 @@ func Benchmark_Ctx_Send(b *testing.B) {
 	app := New()
 	c := app.AcquireCtx(&fasthttp.RequestCtx{})
 	defer app.ReleaseCtx(c)
-	var byt = []byte("Hello, World!")
+	byt := []byte("Hello, World!")
 	b.ReportAllocs()
 	b.ResetTimer()
 	for n := 0; n < b.N; n++ {
@@ -2158,7 +2154,6 @@ func Test_Ctx_Set_Splitter(t *testing.T) {
 	c.Set("Location", "foo\nSet-Cookie:%20SESSIONID=MaliciousValue\n")
 	h = string(c.Response().Header.Peek("Location"))
 	utils.AssertEqual(t, false, strings.Contains(h, "\n"), h)
-
 }
 
 // go test -v  -run=^$ -bench=Benchmark_Ctx_Set -benchmem -count=4
@@ -2166,7 +2161,7 @@ func Benchmark_Ctx_Set(b *testing.B) {
 	app := New()
 	c := app.AcquireCtx(&fasthttp.RequestCtx{})
 	defer app.ReleaseCtx(c)
-	var val = "1431-15132-3423"
+	val := "1431-15132-3423"
 	b.ReportAllocs()
 	b.ResetTimer()
 	for n := 0; n < b.N; n++ {
@@ -2272,7 +2267,7 @@ func Benchmark_Ctx_Write(b *testing.B) {
 	app := New()
 	c := app.AcquireCtx(&fasthttp.RequestCtx{})
 	defer app.ReleaseCtx(c)
-	var byt = []byte("Hello, World!")
+	byt := []byte("Hello, World!")
 	b.ReportAllocs()
 	b.ResetTimer()
 	for n := 0; n < b.N; n++ {
@@ -2400,7 +2395,7 @@ func Test_Ctx_QueryParser(t *testing.T) {
 func Test_Ctx_QueryParser_WithSetParserDecoder(t *testing.T) {
 	type NonRFCTime time.Time
 
-	var NonRFCConverter = func(value string) reflect.Value {
+	NonRFCConverter := func(value string) reflect.Value {
 		if v, err := time.Parse("2006-01-02", value); err == nil {
 			return reflect.ValueOf(v)
 		}
@@ -2743,7 +2738,6 @@ func TestCtx_ParamsInt(t *testing.T) {
 	app.Test(httptest.NewRequest(MethodGet, "/testnoint/xd", nil))
 	app.Test(httptest.NewRequest(MethodGet, "/testignoredefault/2222", nil))
 	app.Test(httptest.NewRequest(MethodGet, "/testdefault/xd", nil))
-
 }
 
 // go test -run Test_Ctx_GetRespHeader

group.go

@@ -48,7 +48,7 @@ func (grp *Group) Mount(prefix string, fiber *App) Router {
 //
 // This method will match all HTTP verbs: GET, POST, PUT, HEAD etc...
 func (grp *Group) Use(args ...interface{}) Router {
-	var prefix = ""
+	prefix := ""
 	var handlers []Handler
 	for i := 0; i < len(args); i++ {
 		switch arg := args[i].(type) {

helpers.go

@@ -122,7 +122,7 @@ func methodExist(ctx *Ctx) (exist bool) {
 		}
 		// Get stack length
 		lenr := len(tree) - 1
-		//Loop over the route stack starting from previous index
+		// Loop over the route stack starting from previous index
 		for ctx.indexRoute < lenr {
 			// Increment route index
 			ctx.indexRoute++
@@ -182,7 +182,7 @@ func setETag(c *Ctx, weak bool) {
 	}
 	body := c.fasthttp.Response.Body()
 	// Skips ETag if no response body is present
-	if len(body) <= 0 {
+	if len(body) == 0 {
 		return
 	}
 	// Get ETag header from request
@@ -344,6 +344,7 @@ type testAddr string
 func (a testAddr) Network() string {
 	return string(a)
 }
+
 func (a testAddr) String() string {
 	return string(a)
 }
@@ -689,7 +690,7 @@ const (
 	NetworkTCP6 = "tcp6"
 )
 
-//Compression types
+// Compression types
 const (
 	StrGzip    = "gzip"
 	StrBr      = "br"

helpers_test.go

@@ -333,7 +333,6 @@ func Benchmark_SlashRecognition(b *testing.B) {
 		c := int32(slashDelimiter)
 		for i := 0; i < b.N; i++ {
 			result = IndexRune(search, c)
-
 		}
 		utils.AssertEqual(b, true, result)
 	})

middleware/basicauth/config.go

@@ -2,6 +2,7 @@ package basicauth
 
 import (
 	"crypto/subtle"
+
 	"github.com/gofiber/fiber/v2"
 	"github.com/gofiber/fiber/v2/utils"
 )

middleware/cache/cache_test.go

@@ -278,7 +278,6 @@ func Test_CustomKey(t *testing.T) {
 	_, err := app.Test(req)
 	utils.AssertEqual(t, nil, err)
 	utils.AssertEqual(t, true, called)
-
 }
 
 func Test_CacheHeader(t *testing.T) {

middleware/cache/manager.go

@@ -79,7 +79,6 @@ func (m *manager) get(key string) (it *item) {
 		it = m.acquire()
 	}
 	return
-
 }
 
 // get raw data from storage or memory

middleware/cors/cors.go

@@ -90,12 +90,12 @@ func New(config ...Config) fiber.Handler {
 	}
 
 	// Convert string to slice
-	allowOrigins := strings.Split(strings.Replace(cfg.AllowOrigins, " ", "", -1), ",")
+	allowOrigins := strings.Split(strings.ReplaceAll(cfg.AllowOrigins, " ", ""), ",")
 
 	// Strip white spaces
-	allowMethods := strings.Replace(cfg.AllowMethods, " ", "", -1)
+	allowMethods := strings.ReplaceAll(cfg.AllowMethods, " ", "")
-	allowHeaders := strings.Replace(cfg.AllowHeaders, " ", "", -1)
+	allowHeaders := strings.ReplaceAll(cfg.AllowHeaders, " ", "")
-	exposeHeaders := strings.Replace(cfg.ExposeHeaders, " ", "", -1)
+	exposeHeaders := strings.ReplaceAll(cfg.ExposeHeaders, " ", "")
 
 	// Convert int to string
 	maxAge := strconv.Itoa(cfg.MaxAge)

middleware/cors/cors_test.go

@@ -24,6 +24,8 @@ func Test_CORS_Empty_Config(t *testing.T) {
 }
 
 func testDefaultOrEmptyConfig(t *testing.T, app *fiber.App) {
+	t.Helper()
+
 	h := app.Handler()
 
 	// Test default GET response headers
@@ -82,7 +84,6 @@ func Test_CORS_Wildcard(t *testing.T) {
 
 	utils.AssertEqual(t, "true", string(ctx.Response.Header.Peek(fiber.HeaderAccessControlAllowCredentials)))
 	utils.AssertEqual(t, "X-Request-ID", string(ctx.Response.Header.Peek(fiber.HeaderAccessControlExposeHeaders)))
-
 }
 
 // go test -run -v Test_CORS_Subdomain

middleware/csrf/csrf_test.go

@@ -28,8 +28,6 @@ func Test_CSRF(t *testing.T) {
 		// Generate CSRF token
 		ctx.Request.Header.SetMethod(method)
 		h(ctx)
-		token := string(ctx.Response.Header.Peek(fiber.HeaderSetCookie))
-		token = strings.Split(strings.Split(token, ";")[0], "=")[1]
 
 		// Without CSRF cookie
 		ctx.Request.Reset()
@@ -51,7 +49,7 @@ func Test_CSRF(t *testing.T) {
 		ctx.Response.Reset()
 		ctx.Request.Header.SetMethod(method)
 		h(ctx)
-		token = string(ctx.Response.Header.Peek(fiber.HeaderSetCookie))
+		token := string(ctx.Response.Header.Peek(fiber.HeaderSetCookie))
 		token = strings.Split(strings.Split(token, ";")[0], "=")[1]
 
 		ctx.Request.Reset()

middleware/csrf/extractors.go

@@ -2,6 +2,7 @@ package csrf
 
 import (
 	"errors"
+
 	"github.com/gofiber/fiber/v2"
 )
 

middleware/csrf/manager.go

@@ -12,8 +12,7 @@ import (
 // msgp -file="manager.go" -o="manager_msgp.go" -tests=false -unexported
 // don't forget to replace the msgp import path to:
 // "github.com/gofiber/fiber/v2/internal/msgp"
-type item struct {
+type item struct{}
-}
 
 //msgp:ignore manager
 type manager struct {

middleware/etag/etag.go

@@ -8,15 +8,17 @@ import (
 	"github.com/gofiber/fiber/v2/internal/bytebufferpool"
 )
 
-var normalizedHeaderETag = []byte("Etag")
+var (
-var weakPrefix = []byte("W/")
+	normalizedHeaderETag = []byte("Etag")
+	weakPrefix           = []byte("W/")
+)
 
 // New creates a new middleware handler
 func New(config ...Config) fiber.Handler {
 	// Set default config
 	cfg := configDefault(config...)
 
-	var crc32q = crc32.MakeTable(0xD5828281)
+	crc32q := crc32.MakeTable(0xD5828281)
 
 	// Return new handler
 	return func(c *fiber.Ctx) (err error) {
@@ -36,7 +38,7 @@ func New(config ...Config) fiber.Handler {
 		}
 		body := c.Response().Body()
 		// Skips ETag if no response body is present
-		if len(body) <= 0 {
+		if len(body) == 0 {
 			return
 		}
 		// Skip ETag if header is already present

middleware/etag/etag_test.go

@@ -84,6 +84,8 @@ func Test_ETag_NewEtag(t *testing.T) {
 }
 
 func testETagNewEtag(t *testing.T, headerIfNoneMatch, matched bool) {
+	t.Helper()
+
 	app := fiber.New()
 
 	app.Use(New())
@@ -132,6 +134,8 @@ func Test_ETag_WeakEtag(t *testing.T) {
 }
 
 func testETagWeakEtag(t *testing.T, headerIfNoneMatch, matched bool) {
+	t.Helper()
+
 	app := fiber.New()
 
 	app.Use(New(Config{Weak: true}))
@@ -180,6 +184,8 @@ func Test_ETag_CustomEtag(t *testing.T) {
 }
 
 func testETagCustomEtag(t *testing.T, headerIfNoneMatch, matched bool) {
+	t.Helper()
+
 	app := fiber.New()
 
 	app.Use(New())

middleware/favicon/favicon.go

@@ -82,10 +82,8 @@ func New(config ...Config) fiber.Handler {
 			if icon, err = ioutil.ReadAll(f); err != nil {
 				panic(err)
 			}
-		} else {
+		} else if icon, err = ioutil.ReadFile(cfg.File); err != nil {
-			if icon, err = ioutil.ReadFile(cfg.File); err != nil {
+			panic(err)
-				panic(err)
-			}
 		}
 
 		iconLen = strconv.Itoa(len(icon))

middleware/favicon/favicon_test.go

@@ -78,8 +78,7 @@ func Test_Middleware_Favicon_Found(t *testing.T) {
 // mockFS wraps local filesystem for the purposes of
 // Test_Middleware_Favicon_FileSystem located below
 // TODO use os.Dir if fiber upgrades to 1.16
-type mockFS struct {
+type mockFS struct{}
-}
 
 func (m mockFS) Open(name string) (http.File, error) {
 	if name == "/" {

middleware/filesystem/filesystem.go

@@ -95,7 +95,7 @@ func New(config ...Config) fiber.Handler {
 
 	var once sync.Once
 	var prefix string
-	var cacheControlStr = "public, max-age=" + strconv.Itoa(cfg.MaxAge)
+	cacheControlStr := "public, max-age=" + strconv.Itoa(cfg.MaxAge)
 
 	// Return new handler
 	return func(c *fiber.Ctx) (err error) {

middleware/filesystem/filesystem_test.go

@@ -33,7 +33,7 @@ func Test_FileSystem(t *testing.T) {
 	}))
 
 	app.Use("/prefix", New(Config{
-		Root: http.Dir("../../.github/testdata/fs"),
+		Root:       http.Dir("../../.github/testdata/fs"),
 		PathPrefix: "img",
 	}))
 
@@ -108,9 +108,9 @@ func Test_FileSystem(t *testing.T) {
 			contentType: "text/html",
 		},
 		{
-			name: "PathPrefix should be applied",
+			name:        "PathPrefix should be applied",
-			url: "/prefix/fiber.png",
+			url:         "/prefix/fiber.png",
-			statusCode: 200,
+			statusCode:  200,
 			contentType: "image/png",
 		},
 	}

middleware/limiter/limited_fixed.go

@@ -54,7 +54,6 @@ func (FixedWindow) New(cfg Config) fiber.Handler {
 		// Set expiration if entry does not exist
 		if e.exp == 0 {
 			e.exp = ts + expiration
-
 		} else if ts >= e.exp {
 			// Check if entry is expired
 			e.currHits = 0

middleware/limiter/limited_sliding.go

@@ -54,7 +54,6 @@ func (SlidingWindow) New(cfg Config) fiber.Handler {
 		// Set expiration if entry does not exist
 		if e.exp == 0 {
 			e.exp = ts + expiration
-
 		} else if ts >= e.exp {
 			// The entry has expired, handle the expiration.
 			// Set the prevHits to the current hits and reset the hits to 0.

middleware/limiter/limiter_test.go

@@ -62,7 +62,6 @@ func Test_Limiter_Concurrency_Store(t *testing.T) {
 
 // go test -run Test_Limiter_Concurrency -race -v
 func Test_Limiter_Concurrency(t *testing.T) {
-
 	// Test concurrency using a default store
 
 	app := fiber.New()
@@ -104,12 +103,10 @@ func Test_Limiter_Concurrency(t *testing.T) {
 	resp, err = app.Test(httptest.NewRequest(http.MethodGet, "/", nil))
 	utils.AssertEqual(t, nil, err)
 	utils.AssertEqual(t, 200, resp.StatusCode)
-
 }
 
 // go test -run Test_Limiter_No_Skip_Choices -v
 func Test_Limiter_No_Skip_Choices(t *testing.T) {
-
 	app := fiber.New()
 
 	app.Use(New(Config{
@@ -137,12 +134,10 @@ func Test_Limiter_No_Skip_Choices(t *testing.T) {
 	resp, err = app.Test(httptest.NewRequest(http.MethodGet, "/success", nil))
 	utils.AssertEqual(t, nil, err)
 	utils.AssertEqual(t, 429, resp.StatusCode)
-
 }
 
 // go test -run Test_Limiter_Skip_Failed_Requests -v
 func Test_Limiter_Skip_Failed_Requests(t *testing.T) {
-
 	app := fiber.New()
 
 	app.Use(New(Config{
@@ -175,12 +170,10 @@ func Test_Limiter_Skip_Failed_Requests(t *testing.T) {
 	resp, err = app.Test(httptest.NewRequest(http.MethodGet, "/success", nil))
 	utils.AssertEqual(t, nil, err)
 	utils.AssertEqual(t, 200, resp.StatusCode)
-
 }
 
 // go test -run Test_Limiter_Skip_Successful_Requests -v
 func Test_Limiter_Skip_Successful_Requests(t *testing.T) {
-
 	// Test concurrency using a default store
 
 	app := fiber.New()
@@ -215,7 +208,6 @@ func Test_Limiter_Skip_Successful_Requests(t *testing.T) {
 	resp, err = app.Test(httptest.NewRequest(http.MethodGet, "/fail", nil))
 	utils.AssertEqual(t, nil, err)
 	utils.AssertEqual(t, 400, resp.StatusCode)
-
 }
 
 // go test -v -run=^$ -bench=Benchmark_Limiter_Custom_Store -benchmem -count=4

middleware/limiter/manager.go

@@ -72,7 +72,6 @@ func (m *manager) get(key string) (it *item) {
 		it = m.acquire()
 	}
 	return
-
 }
 
 // get raw data from storage or memory

middleware/logger/config.go

@@ -59,7 +59,7 @@ var ConfigDefault = Config{
 
 // Function to check if the logger format is compatible for coloring
 func validCustomFormat(format string) bool {
-	var validTemplates = []string{"${status}", "${method}"}
+	validTemplates := []string{"${status}", "${method}"}
 	if format == "" {
 		return true
 	}

middleware/logger/logger.go

@@ -123,8 +123,8 @@ func New(config ...Config) fiber.Handler {
 			cfg.Output = colorable.NewNonColorable(os.Stderr)
 		}
 	}
-	var errPadding = 15
+	errPadding := 15
-	var errPaddingStr = strconv.Itoa(errPadding)
+	errPaddingStr := strconv.Itoa(errPadding)
 	// Return new handler
 	return func(c *fiber.Ctx) (err error) {
 		// Don't execute middleware if Next returns true

middleware/monitor/monitor.go

@@ -24,6 +24,7 @@ type statsPID struct {
 	RAM   uint64  `json:"ram"`
 	Conns int     `json:"conns"`
 }
+
 type statsOS struct {
 	CPU      float64 `json:"cpu"`
 	RAM      uint64  `json:"ram"`

middleware/proxy/proxy.go

@@ -3,11 +3,12 @@ package proxy
 import (
 	"crypto/tls"
 	"fmt"
+	"net/url"
+	"strings"
+
 	"github.com/gofiber/fiber/v2"
 	"github.com/gofiber/fiber/v2/utils"
 	"github.com/valyala/fasthttp"
-	"net/url"
-	"strings"
 )
 
 // New is deprecated

middleware/proxy/proxy_test.go

@@ -2,7 +2,6 @@ package proxy
 
 import (
 	"crypto/tls"
-	"github.com/gofiber/fiber/v2/internal/tlstest"
 	"io/ioutil"
 	"net"
 	"net/http/httptest"
@@ -11,10 +10,13 @@ import (
 	"time"
 
 	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/internal/tlstest"
 	"github.com/gofiber/fiber/v2/utils"
 )
 
 func createProxyTestServer(handler fiber.Handler, t *testing.T) (*fiber.App, string) {
+	t.Helper()
+
 	target := fiber.New(fiber.Config{DisableStartupMessage: true})
 	target.Get("/", handler)
 
@@ -88,7 +90,7 @@ func Test_Proxy(t *testing.T) {
 func Test_Proxy_Balancer_WithTlsConfig(t *testing.T) {
 	t.Parallel()
 
-	serverTLSConf, clientTLSConf, err := tlstest.GetTLSConfigs()
+	serverTLSConf, _, err := tlstest.GetTLSConfigs()
 	utils.AssertEqual(t, nil, err)
 
 	ln, err := net.Listen(fiber.NetworkTCP4, "127.0.0.1:0")
@@ -103,7 +105,7 @@ func Test_Proxy_Balancer_WithTlsConfig(t *testing.T) {
 	})
 
 	addr := ln.Addr().String()
-	clientTLSConf = &tls.Config{InsecureSkipVerify: true}
+	clientTLSConf := &tls.Config{InsecureSkipVerify: true}
 
 	// disable certificate verification in Balancer
 	app.Use(Balancer(Config{
@@ -145,7 +147,7 @@ func Test_Proxy_Forward(t *testing.T) {
 func Test_Proxy_Forward_WithTlsConfig(t *testing.T) {
 	t.Parallel()
 
-	serverTLSConf, clientTLSConf, err := tlstest.GetTLSConfigs()
+	serverTLSConf, _, err := tlstest.GetTLSConfigs()
 	utils.AssertEqual(t, nil, err)
 
 	ln, err := net.Listen(fiber.NetworkTCP4, "127.0.0.1:0")
@@ -160,7 +162,7 @@ func Test_Proxy_Forward_WithTlsConfig(t *testing.T) {
 	})
 
 	addr := ln.Addr().String()
-	clientTLSConf = &tls.Config{InsecureSkipVerify: true}
+	clientTLSConf := &tls.Config{InsecureSkipVerify: true}
 
 	// disable certificate verification
 	WithTlsConfig(clientTLSConf)

middleware/session/data.go

@@ -25,11 +25,6 @@ func acquireData() *data {
 	return dataPool.Get().(*data)
 }
 
-func releaseData(d *data) {
-	d.Reset()
-	dataPool.Put(d)
-}
-
 func (d *data) Reset() {
 	d.Lock()
 	for key := range d.Data {

middleware/session/session.go

@@ -112,7 +112,6 @@ func (s *Session) Destroy() error {
 
 // Regenerate generates a new session id and delete the old one from Storage
 func (s *Session) Regenerate() error {
-
 	// Delete old id from storage
 	if err := s.config.Storage.Delete(s.id); err != nil {
 		return err
@@ -135,7 +134,6 @@ func (s *Session) refresh() {
 
 // Save will update the storage and client cookie
 func (s *Session) Save() error {
-
 	// Better safe than sorry
 	if s.data == nil {
 		return nil
@@ -176,7 +174,7 @@ func (s *Session) Save() error {
 	return nil
 }
 
-// Keys will retrive all keys in current session
+// Keys will retrieve all keys in current session
 func (s *Session) Keys() []string {
 	if s.data == nil {
 		return []string{}

path.go

@@ -183,7 +183,7 @@ func (routeParser *routeParser) analyseParameterPart(pattern string) (string, *r
 	} else if parameterEndPosition == -1 {
 		parameterEndPosition = len(pattern) - 1
 	} else if !isInCharset(pattern[parameterEndPosition+1], parameterDelimiterChars) {
-		parameterEndPosition = parameterEndPosition + 1
+		parameterEndPosition++
 	}
 	// cut params part
 	processedPart := pattern[0 : parameterEndPosition+1]

path_test.go

@@ -232,11 +232,11 @@ func Test_Path_matchParams(t *testing.T) {
 	// optional parameters are not greedy
 	testCase("/:param1:param2?:param3", []testparams{
 		{url: "/abbbc", params: []string{"a", "b", "bbc"}, match: true},
-		//{url: "/ac", params: []string{"a", "", "c"}, match: true}, // TODO: fix it
+		// {url: "/ac", params: []string{"a", "", "c"}, match: true}, // TODO: fix it
 		{url: "/test", params: []string{"t", "e", "st"}, match: true},
 	})
 	testCase("/test:optional?:mandatory", []testparams{
-		//{url: "/testo", params: []string{"", "o"}, match: true}, // TODO: fix it
+		// {url: "/testo", params: []string{"", "o"}, match: true}, // TODO: fix it
 		{url: "/testoaaa", params: []string{"o", "aaa"}, match: true},
 		{url: "/test", params: nil, match: false},
 	})
@@ -325,7 +325,7 @@ func Test_Path_matchParams(t *testing.T) {
 		{url: "/api/1-", params: nil, match: false},
 		{url: "/api/1--", params: []string{"1", "", ""}, match: true},
 		{url: "/api/1-/", params: nil, match: false},
-		//{url: "/api/1-/-", params: nil, match: false}, // TODO: fix this part
+		// {url: "/api/1-/-", params: nil, match: false}, // TODO: fix this part
 		{url: "/api/1-2", params: nil, match: false},
 		{url: "/api/1-2-", params: []string{"1", "2", ""}, match: true},
 		{url: "/api/1-2-3", params: []string{"1", "2", "3"}, match: true},

prefork.go

@@ -19,9 +19,7 @@ const (
 	envPreforkChildVal = "1"
 )
 
-var (
+var testPreforkMaster = false
-	testPreforkMaster = false
-)
 
 // IsChild determines if the current process is a child of Prefork
 func IsChild() bool {
@@ -64,9 +62,9 @@ func (app *App) prefork(network, addr string, tlsConfig *tls.Config) (err error)
 		err error
 	}
 	// create variables
-	var max = runtime.GOMAXPROCS(0)
+	max := runtime.GOMAXPROCS(0)
-	var childs = make(map[int]*exec.Cmd)
+	childs := make(map[int]*exec.Cmd)
-	var channel = make(chan child, max)
+	channel := make(chan child, max)
 
 	// kill child procs when master exits
 	defer func() {

prefork_test.go

@@ -89,9 +89,13 @@ func Test_App_Prefork_Child_Process_Never_Show_Startup_Message(t *testing.T) {
 }
 
 func setupIsChild(t *testing.T) {
+	t.Helper()
+
 	utils.AssertEqual(t, nil, os.Setenv(envPreforkChildKey, envPreforkChildVal))
 }
 
 func teardownIsChild(t *testing.T) {
+	t.Helper()
+
 	utils.AssertEqual(t, nil, os.Setenv(envPreforkChildKey, ""))
 }

router.go

@@ -236,14 +236,14 @@ func (app *App) register(method, pathRaw string, handlers ...Handler) Router {
 		pathPretty = utils.TrimRight(pathPretty, '/')
 	}
 	// Is layer a middleware?
-	var isUse = method == methodUse
+	isUse := method == methodUse
 	// Is path a direct wildcard?
-	var isStar = pathPretty == "/*"
+	isStar := pathPretty == "/*"
 	// Is path a root slash?
-	var isRoot = pathPretty == "/"
+	isRoot := pathPretty == "/"
 	// Parse path parameters
-	var parsedRaw = parseRoute(pathRaw)
+	parsedRaw := parseRoute(pathRaw)
-	var parsedPretty = parseRoute(pathPretty)
+	parsedPretty := parseRoute(pathPretty)
 
 	// Create route metadata without pointer
 	route := Route{
@@ -302,9 +302,9 @@ func (app *App) registerStatic(prefix, root string, config ...Static) Router {
 		root = root[:len(root)-1]
 	}
 	// Is prefix a direct wildcard?
-	var isStar = prefix == "/*"
+	isStar := prefix == "/*"
 	// Is prefix a root slash?
-	var isRoot = prefix == "/"
+	isRoot := prefix == "/"
 	// Is prefix a partial wildcard?
 	if strings.Contains(prefix, "*") {
 		// /john* -> /john

router_test.go

@@ -422,7 +422,6 @@ func Test_Route_Static_HasPrefix(t *testing.T) {
 	utils.AssertEqual(t, nil, err, "app.Test(req)")
 	utils.AssertEqual(t, true, strings.Contains(app.getString(body), "color"))
 
-
 	app = New()
 	app.Static("/static/", dir)
 
@@ -784,13 +783,13 @@ func Benchmark_Router_Github_API(b *testing.B) {
 		utils.AssertEqual(b, nil, err)
 		utils.AssertEqual(b, true, match)
 	}
-
 }
 
 type testRoute struct {
 	Method string `json:"method"`
 	Path   string `json:"path"`
 }
+
 type routeJSON struct {
 	TestRoutes []testRoute `json:"testRoutes"`
 	GithubAPI  []testRoute `json:"githubAPI"`

utils/assertions.go

@@ -16,13 +16,17 @@ import (
 )
 
 // AssertEqual checks if values are equal
-func AssertEqual(t testing.TB, expected, actual interface{}, description ...string) {
+func AssertEqual(tb testing.TB, expected, actual interface{}, description ...string) {
+	if tb != nil {
+		tb.Helper()
+	}
+
 	if reflect.DeepEqual(expected, actual) {
 		return
 	}
 
-	var aType = "<nil>"
+	aType := "<nil>"
-	var bType = "<nil>"
+	bType := "<nil>"
 
 	if expected != nil {
 		aType = reflect.TypeOf(expected).String()
@@ -32,8 +36,8 @@ func AssertEqual(t testing.TB, expected, actual interface{}, description ...stri
 	}
 
 	testName := "AssertEqual"
-	if t != nil {
+	if tb != nil {
-		testName = t.Name()
+		testName = tb.Name()
 	}
 
 	_, file, line, _ := runtime.Caller(1)
@@ -55,8 +59,8 @@ func AssertEqual(t testing.TB, expected, actual interface{}, description ...stri
 		result = buf.String()
 	}
 
-	if t != nil {
+	if tb != nil {
-		t.Fatal(result)
+		tb.Fatal(result)
 	} else {
 		log.Fatal(result)
 	}

utils/bytes_test.go

@@ -24,7 +24,7 @@ func Test_ToLowerBytes(t *testing.T) {
 }
 
 func Benchmark_ToLowerBytes(b *testing.B) {
-	var path = []byte("/RePos/GoFiBer/FibEr/iSsues/187643/CoMmEnts")
+	path := []byte("/RePos/GoFiBer/FibEr/iSsues/187643/CoMmEnts")
 	var res []byte
 
 	b.Run("fiber", func(b *testing.B) {
@@ -56,7 +56,7 @@ func Test_ToUpperBytes(t *testing.T) {
 }
 
 func Benchmark_ToUpperBytes(b *testing.B) {
-	var path = []byte("/RePos/GoFiBer/FibEr/iSsues/187643/CoMmEnts")
+	path := []byte("/RePos/GoFiBer/FibEr/iSsues/187643/CoMmEnts")
 	var res []byte
 
 	b.Run("fiber", func(b *testing.B) {
@@ -107,6 +107,7 @@ func Test_TrimLeftBytes(t *testing.T) {
 	res = TrimLeftBytes([]byte("test/"), '/')
 	AssertEqual(t, []byte("test/"), res)
 }
+
 func Benchmark_TrimLeftBytes(b *testing.B) {
 	var res []byte
 
@@ -123,6 +124,7 @@ func Benchmark_TrimLeftBytes(b *testing.B) {
 		AssertEqual(b, []byte("foobar"), res)
 	})
 }
+
 func Test_TrimBytes(t *testing.T) {
 	t.Parallel()
 	res := TrimBytes([]byte("   test  "), ' ')
@@ -134,6 +136,7 @@ func Test_TrimBytes(t *testing.T) {
 	res = TrimBytes([]byte(".test"), '.')
 	AssertEqual(t, []byte("test"), res)
 }
+
 func Benchmark_TrimBytes(b *testing.B) {
 	var res []byte
 
@@ -152,8 +155,8 @@ func Benchmark_TrimBytes(b *testing.B) {
 }
 
 func Benchmark_EqualFoldBytes(b *testing.B) {
-	var left = []byte("/RePos/GoFiBer/FibEr/iSsues/187643/CoMmEnts")
+	left := []byte("/RePos/GoFiBer/FibEr/iSsues/187643/CoMmEnts")
-	var right = []byte("/RePos/goFiber/Fiber/issues/187643/COMMENTS")
+	right := []byte("/RePos/goFiber/Fiber/issues/187643/COMMENTS")
 	var res bool
 
 	b.Run("fiber", func(b *testing.B) {

utils/common.go

@@ -18,16 +18,20 @@ import (
 	googleuuid "github.com/gofiber/fiber/v2/internal/uuid"
 )
 
-const toLowerTable = "\x00\x01\x02\x03\x04\x05\x06\a\b\t\n\v\f\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !\"#$%&'()*+,-./0123456789:;<=>?@abcdefghijklmnopqrstuvwxyz[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\u007f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
+const (
-const toUpperTable = "\x00\x01\x02\x03\x04\x05\x06\a\b\t\n\v\f\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\u007f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
+	toLowerTable = "\x00\x01\x02\x03\x04\x05\x06\a\b\t\n\v\f\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !\"#$%&'()*+,-./0123456789:;<=>?@abcdefghijklmnopqrstuvwxyz[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\u007f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
+	toUpperTable = "\x00\x01\x02\x03\x04\x05\x06\a\b\t\n\v\f\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\u007f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
+)
 
 // Copyright © 2014, Roger Peppe
 // github.com/rogpeppe/fastuuid
 // All rights reserved.
 
-var uuidSeed [24]byte
+var (
-var uuidCounter uint64
+	uuidSeed    [24]byte
-var uuidSetup sync.Once
+	uuidCounter uint64
+	uuidSetup   sync.Once
+)
 
 // UUID generates an universally unique identifier (UUID)
 func UUID() string {

utils/common_test.go

@@ -16,7 +16,7 @@ func Test_FunctionName(t *testing.T) {
 
 	AssertEqual(t, "github.com/gofiber/fiber/v2/utils.Test_FunctionName.func1", FunctionName(func() {}))
 
-	var dummyint = 20
+	dummyint := 20
 	AssertEqual(t, "int", FunctionName(dummyint))
 }
 
@@ -51,6 +51,7 @@ func Test_UUIDv4(t *testing.T) {
 	AssertEqual(t, 36, len(res))
 	AssertEqual(t, true, res != "00000000-0000-0000-0000-000000000000")
 }
+
 func Test_UUIDv4_Concurrency(t *testing.T) {
 	t.Parallel()
 	iterations := 1000

utils/convert.go

@@ -58,22 +58,22 @@ func ByteSize(bytes uint64) string {
 	switch {
 	case bytes >= uExabyte:
 		unit = "EB"
-		value = value / uExabyte
+		value /= uExabyte
 	case bytes >= uPetabyte:
 		unit = "PB"
-		value = value / uPetabyte
+		value /= uPetabyte
 	case bytes >= uTerabyte:
 		unit = "TB"
-		value = value / uTerabyte
+		value /= uTerabyte
 	case bytes >= uGigabyte:
 		unit = "GB"
-		value = value / uGigabyte
+		value /= uGigabyte
 	case bytes >= uMegabyte:
 		unit = "MB"
-		value = value / uMegabyte
+		value /= uMegabyte
 	case bytes >= uKilobyte:
 		unit = "KB"
-		value = value / uKilobyte
+		value /= uKilobyte
 	case bytes >= uByte:
 		unit = "B"
 	default:

utils/convert_test.go

@@ -15,7 +15,7 @@ func Test_UnsafeString(t *testing.T) {
 // go test -v -run=^$ -bench=UnsafeString -benchmem -count=2
 
 func Benchmark_UnsafeString(b *testing.B) {
-	var hello = []byte("Hello, World!")
+	hello := []byte("Hello, World!")
 	var res string
 	b.Run("unsafe", func(b *testing.B) {
 		for n := 0; n < b.N; n++ {
@@ -40,7 +40,7 @@ func Test_UnsafeBytes(t *testing.T) {
 // go test -v -run=^$ -bench=UnsafeBytes -benchmem -count=4
 
 func Benchmark_UnsafeBytes(b *testing.B) {
-	var hello = "Hello, World!"
+	hello := "Hello, World!"
 	var res []byte
 	b.Run("unsafe", func(b *testing.B) {
 		for n := 0; n < b.N; n++ {

utils/strings.go

@@ -6,7 +6,7 @@ package utils
 
 // ToLower is the equivalent of strings.ToLower
 func ToLower(b string) string {
-	var res = make([]byte, len(b))
+	res := make([]byte, len(b))
 	copy(res, b)
 	for i := 0; i < len(res); i++ {
 		res[i] = toLowerTable[res[i]]
@@ -17,7 +17,7 @@ func ToLower(b string) string {
 
 // ToUpper is the equivalent of strings.ToUpper
 func ToUpper(b string) string {
-	var res = make([]byte, len(b))
+	res := make([]byte, len(b))
 	copy(res, b)
 	for i := 0; i < len(res); i++ {
 		res[i] = toUpperTable[res[i]]

utils/strings_test.go

@@ -16,7 +16,7 @@ func Test_ToUpper(t *testing.T) {
 }
 
 func Benchmark_ToUpper(b *testing.B) {
-	var path = "/RePos/GoFiBer/FibEr/iSsues/187643/CoMmEnts"
+	path := "/RePos/GoFiBer/FibEr/iSsues/187643/CoMmEnts"
 	var res string
 
 	b.Run("fiber", func(b *testing.B) {
@@ -48,7 +48,7 @@ func Test_ToLower(t *testing.T) {
 }
 
 func Benchmark_ToLower(b *testing.B) {
-	var path = "/RePos/GoFiBer/FibEr/iSsues/187643/CoMmEnts"
+	path := "/RePos/GoFiBer/FibEr/iSsues/187643/CoMmEnts"
 	var res string
 	b.Run("fiber", func(b *testing.B) {
 		for n := 0; n < b.N; n++ {
@@ -72,6 +72,7 @@ func Test_TrimRight(t *testing.T) {
 	res = TrimRight("/test", '/')
 	AssertEqual(t, "/test", res)
 }
+
 func Benchmark_TrimRight(b *testing.B) {
 	var res string
 
@@ -97,6 +98,7 @@ func Test_TrimLeft(t *testing.T) {
 	res = TrimLeft("test/", '/')
 	AssertEqual(t, "test/", res)
 }
+
 func Benchmark_TrimLeft(b *testing.B) {
 	var res string
 
@@ -113,6 +115,7 @@ func Benchmark_TrimLeft(b *testing.B) {
 		AssertEqual(b, "foobar", res)
 	})
 }
+
 func Test_Trim(t *testing.T) {
 	t.Parallel()
 	res := Trim("   test  ", ' ')
@@ -150,8 +153,8 @@ func Benchmark_Trim(b *testing.B) {
 
 // go test -v -run=^$ -bench=Benchmark_EqualFold -benchmem -count=4
 func Benchmark_EqualFold(b *testing.B) {
-	var left = "/RePos/GoFiBer/FibEr/iSsues/187643/CoMmEnts"
+	left := "/RePos/GoFiBer/FibEr/iSsues/187643/CoMmEnts"
-	var right = "/RePos/goFiber/Fiber/issues/187643/COMMENTS"
+	right := "/RePos/goFiber/Fiber/issues/187643/COMMENTS"
 	var res bool
 
 	b.Run("fiber", func(b *testing.B) {