Merge pull request #4 from shadiabuhilal/fixIsJsonReq

fix: Bug fix isJsonReq function to handle map headers object that is used in Next.JS

.vscode/settings.json

@@ -1,6 +1,6 @@
 {
     "editor.codeActionsOnSave": {
-        "source.fixAll.eslint": true
+        "source.fixAll.eslint": "explicit"
     },
     "editor.formatOnSave": false,
     "editor.tabSize": 4,

index.js

@@ -9,6 +9,15 @@ const jsonContentTypes = [
     'application/hal+json'
 ];
 
+const getReqHeader = (req, name) => {
+    if (req && req.headers) {
+        if (req.headers.get) {
+            return req.headers.get(name);
+        }
+        return req.headers[name];
+    }
+};
+
 /**
  * @function
  * @description Function that check if current request is a json request or not.
@@ -18,7 +27,7 @@ const jsonContentTypes = [
  * @returns {boolean}
  */
 export const isJsonReq = (req) => {
-    const contentType = req && req.headers && req.headers['content-type'];
+    const contentType = getReqHeader(req,'content-type');
 
     const normalizedContentType = contentType && contentType.toLowerCase();
 

tests/index.spec.js

@@ -44,6 +44,15 @@ describe('is-json-request util', () => {
                     }
                 })
             ).to.be.ok();
+
+            const headersMap = new Map();
+            headersMap.set('content-type', 'application/json');
+
+            expect(
+                isJsonReq({
+                    headers: headersMap
+                })
+            ).to.be.ok();
         });
 
         it('should return false', () => {