Travis build: 1194

README.md

@@ -263,6 +263,8 @@ average(1, 2, 3);
 * [`cleanObj`](#cleanobj)
 * [`invertKeyValues`](#invertkeyvalues)
 * [`lowercaseKeys`](#lowercasekeys)
+* [`mapKeys`](#mapkeys)
+* [`mapValues`](#mapvalues)
 * [`objectFromPairs`](#objectfrompairs)
 * [`objectToPairs`](#objecttopairs)
 * [`orderBy`](#orderby)
@@ -3974,6 +3976,64 @@ const myObjLower = lowercaseKeys(myObj); // {name: 'Adam', surname: 'Smith'};
 <br>[⬆ Back to top](#table-of-contents)
 
 
+### mapKeys
+
+Creates an object with keys generated by running the provided function for each key and the same values as the provided object.
+
+Use `Object.keys(obj)` to iterate over the object's keys.
+Use `Array.reduce()` to create a new object with the same values and mapped keys using `fn`.
+
+```js
+const mapKeys = (obj, fn) =>
+  Object.keys(obj).reduce((acc, k) => {
+    acc[fn(obj[k], k, obj)] = obj[k];
+    return acc;
+  }, {});
+```
+
+<details>
+<summary>Examples</summary>
+
+```js
+mapKeys({ a: 1, b: 2 }, (val, key) => key + val); // { a1: 1, b2: 2 }
+```
+
+</details>
+
+<br>[⬆ Back to top](#table-of-contents)
+
+
+### mapValues
+
+Creates an object with the same keys as the provided object and values generated by running the provided function for each value.
+
+Use `Object.keys(obj)` to iterate over the object's keys.
+Use `Array.reduce()` to create a new object with the same keys and mapped values using `fn`.
+
+```js
+const mapValues = (obj, fn) =>
+  Object.keys(obj).reduce((acc, k) => {
+    acc[k] = fn(obj[k], k, obj);
+    return acc;
+  }, {});
+```
+
+<details>
+<summary>Examples</summary>
+
+```js
+const users = {
+  fred: { user: 'fred', age: 40 },
+  pebbles: { user: 'pebbles', age: 1 }
+};
+mapValues(users, u => u.age); // { fred: 40, pebbles: 1 }
+```
+
+</details>
+
+<br>[⬆ Back to top](#table-of-contents)
+
+
 ### objectFromPairs
 
 Creates an object from the given key-value pairs.
@@ -5366,6 +5426,7 @@ const httpPost = (url, callback, data = null, err = console.error) => {
 
 
 
+
 const newPost = {
   "userId": 1,
   "id": 1337,

snippets/httpPost.md

@@ -35,6 +35,7 @@ const httpPost = (url, callback, data = null, err = console.error) => {
 
 
 
+
 const newPost = {
   "userId": 1,
   "id": 1337,

snippets/mapKeys.md

@@ -7,9 +7,12 @@ Use `Array.reduce()` to create a new object with the same values and mapped keys
 
 ```js
 const mapKeys = (obj, fn) =>
-  Object.keys(obj).reduce((acc,k) => {acc[fn(obj[k], k, obj)] = obj[k]; return acc;},{});
+  Object.keys(obj).reduce((acc, k) => {
+    acc[fn(obj[k], k, obj)] = obj[k];
+    return acc;
+  }, {});
 ```
 
 ```js
-mapKeys({ 'a': 1, 'b': 2 }, (val, key) => key + val); // { a1: 1, b2: 2 }
+mapKeys({ a: 1, b: 2 }, (val, key) => key + val); // { a1: 1, b2: 2 }
 ```

snippets/mapValues.md

@@ -7,13 +7,16 @@ Use `Array.reduce()` to create a new object with the same keys and mapped values
 
 ```js
 const mapValues = (obj, fn) =>
-  Object.keys(obj).reduce((acc,k) => {acc[k] = fn(obj[k], k, obj); return acc;},{});
+  Object.keys(obj).reduce((acc, k) => {
+    acc[k] = fn(obj[k], k, obj);
+    return acc;
+  }, {});
 ```
 
 ```js
 const users = {
-  'fred':    { 'user': 'fred',    'age': 40 },
-  'pebbles': { 'user': 'pebbles', 'age': 1 }
+  fred: { user: 'fred', age: 40 },
+  pebbles: { user: 'pebbles', age: 1 }
 };
 mapValues(users, u => u.age); // { fred: 40, pebbles: 1 }
 ```