👷 v3 (ci): fix some linter warnings

addon/retry/config.go

@@ -1,6 +1,8 @@
 package retry
 
-import "time"
+import (
+	"time"
+)
 
 // Config defines the config for addon.
 type Config struct {

app.go

@@ -821,7 +821,7 @@ func (app *App) Config() Config {
 func (app *App) Handler() fasthttp.RequestHandler { //revive:disable-line:confusing-naming // Having both a Handler() (uppercase) and a handler() (lowercase) is fine. TODO: Use nolint:revive directive instead. See https://github.com/golangci/golangci-lint/issues/3476
 	// prepare the server for the start
 	app.startupProcess()
-	return app.handler
+	return app.requestHandler
 }
 
 // Stack returns the raw router stack.
@@ -981,7 +981,7 @@ func (app *App) init() *App {
 	}
 
 	// fasthttp server settings
-	app.server.Handler = app.handler
+	app.server.Handler = app.requestHandler
 	app.server.Name = app.config.ServerHeader
 	app.server.Concurrency = app.config.Concurrency
 	app.server.NoDefaultDate = app.config.DisableDefaultDate
@@ -1041,7 +1041,10 @@ func (app *App) ErrorHandler(ctx Ctx, err error) error {
 // errors before calling the application's error handler method.
 func (app *App) serverErrorHandler(fctx *fasthttp.RequestCtx, err error) {
 	// Acquire Ctx with fasthttp request from pool
-	c := app.AcquireCtx().(*DefaultCtx)
+	c, ok := app.AcquireCtx().(*DefaultCtx)
+	if !ok {
+		panic(fmt.Errorf("failed to type-assert to *DefaultCtx"))
+	}
 	c.Reset(fctx)
 
 	defer app.ReleaseCtx(c)

app_test.go

@@ -257,7 +257,7 @@ func Test_App_serverErrorHandler_Internal_Error(t *testing.T) {
 	t.Parallel()
 	app := New()
 	msg := "test err"
-	c := app.NewCtx(&fasthttp.RequestCtx{}).(*DefaultCtx)
+	c := app.NewCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
 
 	app.serverErrorHandler(c.fasthttp, errors.New(msg))
 	require.Equal(t, string(c.fasthttp.Response.Body()), msg)
@@ -1294,7 +1294,7 @@ func Benchmark_AcquireCtx(b *testing.B) {
 // go test -v -run=^$ -bench=Benchmark_NewError -benchmem -count=4
 func Benchmark_NewError(b *testing.B) {
 	for n := 0; n < b.N; n++ {
-		NewError(200, "test")
+		NewError(200, "test") //nolint:errcheck // not needed
 	}
 }