Rename js snippets

snippets/js/s/compact-array.md

@@ -0,0 +1,21 @@
+---
+title: Compact array
+type: snippet
+language: javascript
+tags: [array]
+cover: basket-paper
+dateModified: 2020-10-22T20:23:47+03:00
+---
+
+Removes falsy values from an array.
+
+- Use `Array.prototype.filter()` to filter out falsy values (`false`, `null`, `0`, `""`, `undefined`, and `NaN`).
+
+```js
+const compact = arr => arr.filter(Boolean);
+```
+
+```js
+compact([0, 1, false, 2, '', 3, 'a', 'e' * 23, NaN, 's', 34]);
+// [ 1, 2, 3, 'a', 's', 34 ]
+```