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- ## just-extend
-
- Part of a [library](../../../../) of zero-dependency npm modules that do just do one thing.
- Guilt-free utilities for every occasion.
-
- [Try it now](http://anguscroll.com/just/just-extend)
-
- ```js
- import extend from 'just-extend';
-
- var obj = {a: 3, b: 5};
- extend(obj, {a: 4, c: 8}); // {a: 4, b: 5, c: 8}
- obj; // {a: 4, b: 5, c: 8}
-
- var obj = {a: 3, b: 5};
- extend({}, obj, {a: 4, c: 8}); // {a: 4, b: 5, c: 8}
- obj; // {a: 3, b: 5}
-
- var arr = [1, 2, 3];
- var obj = {a: 3, b: 5};
- extend(obj, {c: arr}); // {a: 3, b: 5, c: [1, 2, 3]}
- arr.push(4);
- obj; // {a: 3, b: 5, c: [1, 2, 3, 4]}
-
- var arr = [1, 2, 3];
- var obj = {a: 3, b: 5};
- extend(true, obj, {c: arr}); // {a: 3, b: 5, c: [1, 2, 3]}
- arr.push(4);
- obj; // {a: 3, b: 5, c: [1, 2, 3]}
-
- extend({a: 4, b: 5}); // {a: 4, b: 5}
- extend({a: 4, b: 5}, 3); {a: 4, b: 5}
- extend({a: 4, b: 5}, true); {a: 4, b: 5}
- extend('hello', {a: 4, b: 5}); // throws
- extend(3, {a: 4, b: 5}); // throws
- ```
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