⚡ Get rid of mmmagic for mime-type detection

packages/core/src/NodeExecuteFunctions.ts

@@ -44,14 +44,9 @@ import * as express from 'express';
 import * as path from 'path';
 import { OptionsWithUrl, OptionsWithUri } from 'request';
 import * as requestPromise from 'request-promise-native';
-
-import { Magic, MAGIC_MIME_TYPE } from 'mmmagic';
-
 import { createHmac } from 'crypto';
-
-
-const magic = new Magic(MAGIC_MIME_TYPE);
-
+import { fromBuffer } from 'file-type';
+import { lookup } from 'mime-types';
 
 
 /**
@@ -66,18 +61,28 @@ const magic = new Magic(MAGIC_MIME_TYPE);
  */
 export async function prepareBinaryData(binaryData: Buffer, filePath?: string, mimeType?: string): Promise<IBinaryData> {
 	if (!mimeType) {
-		// If not mime type is given figure it out
-		mimeType = await new Promise<string>(
-			(resolve, reject) => {
-				magic.detect(binaryData, (err: Error, mimeType: string) => {
-					if (err) {
-						return reject(err);
-					}
+		// If no mime type is given figure it out
 
-					return resolve(mimeType);
-				});
+		if (filePath) {
+			// Use file path to guess mime type
+			const mimeTypeLookup = lookup(filePath);
+			if (mimeTypeLookup) {
+				mimeType = mimeTypeLookup;
 			}
-		);
+		}
+
+		if (!mimeType) {
+			// Use buffer to guess mime type
+			const fileTypeData = await fromBuffer(binaryData);
+			if (fileTypeData) {
+				mimeType = fileTypeData.mime;
+			}
+		}
+
+		if (!mimeType) {
+			// Fall back to text
+			mimeType = 'text/plain';
+		}
 	}
 
 	const returnData: IBinaryData = {