Merge f95b67c into 6f66055

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 1.0.2
++ Update docs and license
+
 ## 0.6.2
 + Add changelog
 + Convert utils build with babel

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@tinkoff/utils",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "author": "Tinkoff team",
   "scripts": {
     "release": "node ./releaseUtils/index.js",

src/is/__tests__/not.js

@@ -0,0 +1,11 @@
+import not from '../not';
+
+describe('utils/is/not', () => {
+    it('returns the logical inverse of passed arg', () => {
+        expect(not(1)).toBe(false);
+        expect(not(0)).toBe(true);
+        expect(not(false)).toBe(true);
+        expect(not('2323')).toBe(false);
+        expect(not({})).toBe(false);
+    });
+});

src/is/not.js

@@ -0,0 +1,16 @@
+/**
+ * A function that returns the `!` of its argument. It will return `true` when
+ * passed false-y value, and `false` when passed a truth-y one.
+ *
+ * @param {*} a any value
+ * @return {Boolean} the logical inverse of passed argument.
+ * @example
+ *
+ *      not(true); //=> false
+ *      not(false); //=> true
+ *      not(0); //=> true
+ *      not(1); //=> false
+ */
+export default function not(a) {
+    return !a;
+}