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+### renameKeys
+
+Renames multiple object keys
+
+Get the object's keys with `Object.keys()` and return an object with the new keys, according to the `keysMap`, using `Array.reduce()`.
+
+The initial value is an empty object which is used as the accumulator, `acc`, in the callback function. Using the spread operator `(...)`, `acc` is continuously merged with a new object containing the new key and original object's value. If a new key doesn't exist, fallback to original object's key.
+
+```js
+const renameKeys = (keysMap, obj) => Object
+    .keys(obj)
+    .reduce((acc, key) => ({
+        ...acc,
+        ...{ [keysMap[key] || key]: obj[key] }
+    }), {});
+```
+
+```js
+const obj = { name: 'Bobo', job: 'Front-End Master', shoeSize: 100 };
+renameKeys({ name: 'firstName', job: 'passion' }, obj);
+// { firstName: 'Bobo', passion: 'Front-End Master', shoeSize: 100 }
+```