fix(Module): Add uniq and docs (#10)

README.md

@@ -42,6 +42,7 @@
 * [reduce](#reduce)
 * [set](#set)
 * [T](#t)
+* [uniq](#uniq)
 * [uppercase](#uppercase)
 * [view](#view)
 * [zip](#zip)
@@ -554,6 +555,21 @@ const nameLens = lensProp('name')
 const updated = set(nameLens, 'Joh', data) // { name: 'John', age: 29 }
 ```
 
+Sets the value at the location pointed to by the lens.
+
+### uniq
+
+```
+uniq: Array<T> -> Array<T>
+```
+
+```
+const arr = [1, 2, 3, 1]
+uniq(arr) //  [1, 2, 3]
+```
+
+Returns a copy of the passed in array, with only unique values.
+
 ### uppercase
 
 ```

__tests__/modules/uniq.test.js

@@ -0,0 +1,19 @@
+import uniq from '../../modules/uniq'
+
+describe('uniq', () => {
+  test('returns an array of unique values', () => {
+    const arr = [1, 2, 3, 4, 1]
+    const actual = uniq(arr)
+    const expected = [1, 2, 3, 4]
+
+    expect(actual).toEqual(expected)
+  })
+
+  test('returns a copy of the passed in array', () => {
+    const arr = [1, 2, 3]
+    const actual = uniq(arr)
+
+    expect(actual).not.toBe(arr)
+    expect(actual).toEqual(arr)
+  })
+})

modules/index.js

@@ -22,5 +22,7 @@ export { default as prop } from './prop'
 export { default as propOr } from './propOr'
 export { default as reduce } from './reduce'
 export { default as set } from './set'
+export { default as uniq } from './uniq'
+export { default as uppercase } from './uppercase'
 export { default as view } from './view'
 export { default as zip } from './zip'

modules/uniq.js

@@ -0,0 +1,3 @@
+const uniq = arr => Array.from(new Set(arr))
+
+export default uniq