rearrange builtins

evaluator/evaluator.go

@@ -3,6 +3,7 @@ package evaluator
 import (
 	"fmt"
 	"monkey/ast"
+	"monkey/builtins"
 	"monkey/object"
 	"strings"
 )
@@ -487,7 +488,7 @@ func evalIdentifier(node *ast.Identifier, env *object.Environment) object.Object
 		return val
 	}
 
-	if builtin, ok := builtins[node.Value]; ok {
+	if builtin, ok := builtins.Builtins[node.Value]; ok {
 		return builtin
 	}