Simplified returned data from api key extraction

refs https://github.com/TryGhost/Toolbox/issues/292

- We can query the data base by the API key itself, there's no need for type of the API  at any point yet

ghost/extract-api-key/lib/extract-api-key.js

@@ -1,24 +1,16 @@
-/**
- * @typedef {object} ApiKey
- * @prop {string} key
- * @prop {string} type
- */
-
 /**
  *
  * @param {import('express').Request} req
- * @returns {ApiKey}
+ * @returns {string}
  */
 const extractAPIKey = (req) => {
-    let key = null;
-    let type = null;
+    let keyValue = null;
 
     if (req.query && req.query.key) {
-        type = 'content';
-        key = req.query.key;
+        keyValue = req.query.key;
     }
 
-    return {key, type};
+    return keyValue;
 };
 
 module.exports = extractAPIKey;

ghost/extract-api-key/test/extract-api-key.test.js

@@ -2,25 +2,23 @@ const assert = require('assert');
 const extractApiKey = require('../index');
 
 describe('Extract API Key', function () {
-    it('returns nulls for a request without any key', function () {
-        const {key, type} = extractApiKey({
+    it('Returns nulls for a request without any key', function () {
+        const key = extractApiKey({
             query: {
                 filter: 'status:active'
             }
         });
 
         assert.equal(key, null);
-        assert.equal(type, null);
     });
 
     it('Extracts Content API key from the request', function () {
-        const {key, type} = extractApiKey({
+        const key = extractApiKey({
             query: {
                 key: '123thekey'
             }
         });
 
         assert.equal(key, '123thekey');
-        assert.equal(type, 'content');
     });
 });