yenc functions decode 1 part files correctly

package-lock.json

@@ -15,6 +15,7 @@
         "log4js": "^6.9.1",
         "nntp-js": "^1.0.4",
         "node-unrar-js": "^2.0.0",
+        "simple-yenc": "^1.0.4",
         "sqlite": "^5.1.1",
         "sqlite3": "^6.0.1",
         "xmlbuilder2": "^3.1.1",
@@ -1019,6 +1020,16 @@
         "simple-concat": "^1.0.0"
       }
     },
+    "node_modules/simple-yenc": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/simple-yenc/-/simple-yenc-1.0.4.tgz",
+      "integrity": "sha512-5gvxpSd79e9a3V4QDYUqnqxeD4HGlhCakVpb6gMnDD7lexJggSBJRBO5h52y/iJrdXRilX9UCuDaIJhSWm5OWw==",
+      "license": "MIT",
+      "funding": {
+        "type": "individual",
+        "url": "https://github.com/sponsors/eshaz"
+      }
+    },
     "node_modules/sprintf-js": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",