replace jest with ava

node_modules/is-obj/readme.md

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+# is-obj [![Build Status](https://travis-ci.org/sindresorhus/is-obj.svg?branch=master)](https://travis-ci.org/sindresorhus/is-obj)
+
+> Check if a value is an object
+
+Keep in mind that array, function, regexp, etc, are objects in JavaScript.<br>
+See [`is-plain-obj`](https://github.com/sindresorhus/is-plain-obj) if you want to check for plain objects.
+
+
+## Install
+
+```
+$ npm install is-obj
+```
+
+
+## Usage
+
+```js
+const isObject = require('is-obj');
+
+isObject({foo: 'bar'});
+//=> true
+
+isObject([1, 2, 3]);
+//=> true
+
+isObject('foo');
+//=> false
+```
+
+
+## Related
+
+- [is](https://github.com/sindresorhus/is) - Type check values
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)