Fixed xhr

package.json

@@ -1,9 +1,10 @@
 {
 	"name": "@ztimson/js-utilities",
-	"version": "0.0.0",
+	"version": "0.1.0",
 	"description": "JavaScript Utility library",
 	"author": "Zak Timson",
 	"license": "MIT",
+	"private": false,
 	"repository": {
 		"type": "git",
 		"url": "https://git.zakscode.com/ztimson/js-utilities"

src/xhr.ts

@@ -45,7 +45,7 @@ export class XHR<T> {
 		return fetch(`${this.baseUrl}${href || ''}`.replace(/([^:]\/)\/+/g, '$1'), {
 			headers,
 			method: opts.method || (body ? 'POST' : 'GET'),
-			body: (headers['Content-Type'].startsWith('application/json') && body) ? JSON.stringify(body) : body
+			body: (headers['Content-Type']?.startsWith('application/json') && body) ? JSON.stringify(body) : body
 		}).then(async resp => {
 			for(let fn of this.getInterceptors()) {
 				const wait = new Promise(res =>