refactor: Unify binary-data assertion across all nodes (no-changelog) (#5624)

packages/nodes-base/nodes/HtmlExtract/HtmlExtract.node.ts

@@ -1,7 +1,7 @@
 import cheerio from 'cheerio';
-import type { IExecuteFunctions } from 'n8n-core';
 import type {
 	IDataObject,
+	IExecuteFunctions,
 	INodeExecutionData,
 	INodeType,
 	INodeTypeDescription,
@@ -236,19 +236,7 @@ export class HtmlExtract implements INodeType {
 					}
 					htmlArray = item.json[dataPropertyName] as string;
 				} else {
-					if (item.binary === undefined) {
-						throw new NodeOperationError(this.getNode(), 'No item does not contain binary data!', {
-							itemIndex,
-						});
-					}
-					if (item.binary[dataPropertyName] === undefined) {
-						throw new NodeOperationError(
-							this.getNode(),
-							`No property named "${dataPropertyName}" exists!`,
-							{ itemIndex },
-						);
-					}
-
+					this.helpers.assertBinaryData(itemIndex, dataPropertyName);
 					const binaryDataBuffer = await this.helpers.getBinaryDataBuffer(
 						itemIndex,
 						dataPropertyName,