Small fixes

builtin/utils.go

@@ -8,6 +8,7 @@ var (
 	anyType     = reflect.TypeOf(new(interface{})).Elem()
 	integerType = reflect.TypeOf(0)
 	floatType   = reflect.TypeOf(float64(0))
+	arrayType   = reflect.TypeOf([]interface{}{})
 )
 
 func kind(t reflect.Type) reflect.Kind {

checker/types.go

@@ -20,7 +20,6 @@ var (
 	timeType     = reflect.TypeOf(time.Time{})
 	durationType = reflect.TypeOf(time.Duration(0))
 	functionType = reflect.TypeOf(new(func(...interface{}) (interface{}, error))).Elem()
-	errorType    = reflect.TypeOf((*error)(nil)).Elem()
 )
 
 func combined(a, b reflect.Type) reflect.Type {

test/mock/mock.go

@@ -32,6 +32,7 @@ type Env struct {
 	Abstract           Abstract
 	ArrayOfAny         []interface{}
 	ArrayOfInt         []int
+	ArrayOfString      []string
 	ArrayOfFoo         []*Foo
 	MapOfFoo           map[string]Foo
 	MapOfAny           map[string]interface{}

vm/runtime/runtime.go

@@ -267,7 +267,7 @@ func In(needle interface{}, array interface{}) bool {
 		return false
 	}
 
-	panic(fmt.Sprintf(`operator "in"" not defined on %T`, array))
+	panic(fmt.Sprintf(`operator "in" not defined on %T`, array))
 }
 
 func Len(a interface{}) int {