Update mjml to v5-alpha and gulp to v5 to fix vulnerability CVE-2022-37620

package.json

@@ -1,6 +1,6 @@
 {
   "name": "gulp-mjml",
-  "version": "4.0.2",
+  "version": "5.0.0-alpha",
   "description": "Add Gulp to your MJML workflow",
   "main": "src/index",
   "scripts": {
@@ -12,13 +12,13 @@
   ],
   "license": "MIT",
   "dependencies": {
-    "mjml": "^4.0.0",
+    "mjml": "^5.0.0-alpha.4",
     "plugin-error": "^1.0.1",
     "replace-ext": "^1.0.0",
     "through2": "^3.0.1"
   },
   "devDependencies": {
-    "gulp": "^4.0.0"
+    "gulp": "^5.0.0"
   },
   "repository": {
     "type": "git",

src/index.js

@@ -20,6 +20,8 @@ module.exports = function mjml(mjmlEngine, options) {
   }
 
   return through.obj(function(file, enc, callback) {
+    const that = this;
+
     // Not a big fan of this deep copy methods
     // But it will work regardless of Node version
     const localOptions = JSON.parse(JSON.stringify(options));
@@ -36,19 +38,19 @@ module.exports = function mjml(mjmlEngine, options) {
 
     if (file.isBuffer()) {
       const output = file.clone();
-      let render;
-
-      try {
-        render = mjmlEngine(file.contents.toString(), localOptions);
-      } catch (e) {
-        this.emit("error", raise(e.message));
-        return callback();
-      }
-
-      // [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues
-      output.contents = Buffer.from(render.html);
-      output.path = replaceExt(file.path.toString(), localOptions.fileExt || ".html");
-      this.push(output);
+
+      return mjmlEngine(file.contents.toString(), localOptions)
+        .then(function (render) {
+          // [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues
+          output.contents = Buffer.from(render.html);
+          output.path = replaceExt(file.path.toString(), localOptions.fileExt || ".html");
+          that.push(output);
+        })
+        .catch(function (error) {
+          that.emit("error", raise(error));
+          return callback();
+        })
+        .then(callback);
     }
     return callback();
   });