Remove utf8-length dependency

Author: pluma

package.json

@@ -62,7 +62,6 @@
     "es6-error": "^4.0.1",
     "linkedlist": "^1.0.1",
     "multi-part": "^2.0.0",
-    "utf8-length": "^0.0.1",
     "xhr": "^2.4.1"
   },
   "devDependencies": {

src/connection.ts

@@ -1,6 +1,5 @@
 import { stringify as querystringify } from "querystring";
 import { ArangoError, HttpError } from "./error";
-import { byteLength } from "./util/bytelength";
 import {
   ArangojsResponse,
   createRequest,
@@ -304,13 +303,6 @@ export class Connection {
         "x-arango-version": String(this._arangoVersion)
       };
 
-      if (!isBrowser) {
-        // Node doesn't set content-length but ArangoDB needs it
-        extraHeaders["content-length"] = String(
-          body ? byteLength(body, "utf-8") : 0
-        );
-      }
-
       this._queue.push({
         retries: 0,
         host,

src/util/bytelength.ts

@@ -60,6 +60,9 @@ export function createRequest(
           : url.search
         : baseUrlParts.search;
       if (search) path += search;
+      if (typeof body === "string" && !headers["content-length"]) {
+        headers["content-length"] = String(Buffer.byteLength(body));
+      }
       const options: any = { path, method, headers, agent };
       options.hostname = baseUrlParts.hostname;
       options.port = baseUrlParts.port;