bump golancgi linter version to the latest 1.42.1 (#32)

.golangci.yml

@@ -13,7 +13,6 @@ issues:
         - scopelint
         - funlen
         - maligned
-        - golint
         - paralleltest
         - testpackage
         - goerr113
@@ -46,17 +45,10 @@ linters-settings:
   gofmt:
     simplify: true
 
-  golint:
-    min-confidence: 0
-
   gocyclo:
     # minimal code complexity to report, 30 by default (we should lower it to around 15-17)
     min-complexity: 25
 
-  maligned:
-    # print struct with more effective memory layout or not, false by default
-    suggest-new: true
-
   misspell:
     locale: neutral
 

Makefile

@@ -39,7 +39,7 @@ deps:
 	@ echo "-> Installing project dependencies..."
 	@ GO111MODULE=off go get -u github.com/myitcv/gobin
 	@ $(GOBIN)/gobin golang.org/x/lint/golint
-	@ curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh| sh -s -- -b $(GOBIN) v1.37.0
+	@ curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh| sh -s -- -b $(GOBIN) v1.42.1
 	@ echo "-> Done."
 
 ## Formats code and fixes as many as possible linter errors

internal/pkg/values/string_value.go

@@ -171,7 +171,10 @@ func (s StringValue) AddDecorator(decorator StringDecorator) StringValue {
 }
 
 func (s StringValue) decoratedValue(value interface{}) string {
-	decoratedValue := value.(string)
+	decoratedValue, ok := value.(string)
+	if !ok {
+		return ""
+	}
 	for _, decorator := range s.decorators {
 		decoratedValue = decorator(decoratedValue)
 	}