diff --git a/packages/filter.punches/spec/filterBehavior.ts b/packages/filter.punches/spec/filterBehavior.ts
index 0fb010f91..b3e13494f 100644
--- a/packages/filter.punches/spec/filterBehavior.ts
+++ b/packages/filter.punches/spec/filterBehavior.ts
@@ -6,13 +6,6 @@ import { filters } from '../dist'
 import { assert } from 'chai'
 
 declare let ko: KnockoutInstance
-/* can be remove https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.isarray
-if (!Array.isArray) {
-  Array.isArray = function (arg) {
-    return Object.prototype.toString.call(arg) === '[object Array]'
-  }
-}
-*/
 
 describe('Text filters preprocessor', function () {
   const filterPreprocessor = function (string) {
diff --git a/packages/provider.mustache/src/mustacheParser.ts b/packages/provider.mustache/src/mustacheParser.ts
index 12595d444..411ac301b 100644
--- a/packages/provider.mustache/src/mustacheParser.ts
+++ b/packages/provider.mustache/src/mustacheParser.ts
@@ -69,7 +69,7 @@ class Text extends Interpolated {
 /**
  *          Interpolation Parsing
  */
-export function* innerParse(text: string) {
+function* innerParse(text: string) {
   const innerMatch = text.match(INNER_EXPRESSION)
   if (innerMatch) {
     const [pre, inner, post] = innerMatch.slice(1)
@@ -81,7 +81,7 @@ export function* innerParse(text: string) {
   }
 }
 
-export function* parseOuterMatch(outerMatch?: RegExpMatchArray | null) {
+function* parseOuterMatch(outerMatch?: RegExpMatchArray | null) {
   if (!outerMatch) {
     return
   }