Fix issues in Sources

Sources

sources

Sources/Extension.swift

@@ -14,12 +14,13 @@ open class Extension {
 
   /// Registers a simple template tag with a name and a handler
   public func registerSimpleTag(_ name: String, handler: @escaping (Context) throws -> String) {
-    registerTag(name, parser: { parser, token in
-      return SimpleNode(token: token, handler: handler)
-    })
+    registerTag(name) { _, token in
+      SimpleNode(token: token, handler: handler)
+    }
   }
-  
+
   /// Registers boolean filter with it's negative counterpart
+  // swiftlint:disable:next discouraged_optional_boolean
   public func registerFilter(name: String, negativeFilterName: String, filter: @escaping (Any?) throws -> Bool?) {
     filters[name] = .simple(filter)
     filters[negativeFilterName] = .simple {
@@ -44,7 +45,6 @@ open class Extension {
   }
 }
 
-
 class DefaultExtension: Extension {
   override init() {
     super.init()
@@ -77,7 +77,6 @@ class DefaultExtension: Extension {
   }
 }
 
-
 protocol FilterType {
   func invoke(value: Any?, arguments: [Any?], context: Context) throws -> Any?
 }