remove unnecessary test/exposure of function

src/compiler/compile/utils/__test__.ts

@@ -2,7 +2,6 @@ import * as assert from 'assert';
 import get_name_from_filename from './get_name_from_filename';
 import {
 	is_contenteditable,
-	is_attr_contenteditable,
 	has_contenteditable_attr,
 	is_name_contenteditable,
 	get_contenteditable_attr,
@@ -53,18 +52,6 @@ describe('contenteditable', () => {
 		});
 	});
 
-	describe('is_attr_contenteditable', () => {
-		it('returns true if attribute is contenteditable', () => {
-			const attr = { name: 'contenteditable' } as Attribute;
-			assert.equal(is_attr_contenteditable(attr), true);
-		});
-		it('returns false if attribute is not contenteditable', () => {
-			const attr = { name: 'href' } as Attribute;
-			const actual = is_attr_contenteditable(attr);
-			assert.equal(actual, false);
-		});
-	});
-
 	describe('has_contenteditable_attr', () => {
 		it('returns true if attribute is contenteditable', () => {
 			const attr = { name: 'contenteditable' } as Attribute;

src/compiler/compile/utils/contenteditable.ts

@@ -20,7 +20,7 @@ function is_input_or_textarea(node: Element): boolean {
  * Check if a given attribute is 'contenteditable'.
  * @param {Attribute} attribute A node.attribute
  */
-export function is_attr_contenteditable(attribute: Attribute): boolean {
+function is_attr_contenteditable(attribute: Attribute): boolean {
   return attribute.name === 'contenteditable';
 }