Checks if object has an entry. [:running:] [:vhs:] [:package:] [:moon:] [:ledger:]
> Similar: [entry], [entries], [isEntry].<br>
> This is part of package [extra-object].

[extra-object]: https://www.npmjs.com/package/extra-object

```javascript
object.isEntry(x, e, [fc], [fm]);
// x:  an object
// e:  entry?
// fc: compare function (a, b)
// fm: map function (v, k, x)
```

```javascript
const object = require('extra-object');

var x = {a: 1, b: 2, c: -3};
object.isEntry(x, ['c', 3]);
// false

object.isEntry(x, ['c', 3], (a, b) => Math.abs(a) - Math.abs(b));
// true

object.isEntry(x, ['c', 3], null, v => Math.abs(v));
// true
```

### references

- [Array.prototype.includes: MDN web docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes)
- [array-tools.contains: @75lb](https://www.npmjs.com/package/array-tools)

[:running:]: https://npm.runkit.com/@extra-object/is-entry
[:package:]: https://www.npmjs.com/package/@extra-object/is-entry
[:moon:]: https://www.npmjs.com/package/@extra-object/is-entry.min
[:ledger:]: https://unpkg.com/@extra-object/is-entry/
[entry]: https://github.com/nodef/extra-object/wiki/entry
[entries]: https://github.com/nodef/extra-object/wiki/entries
[isEntry]: https://github.com/nodef/extra-object/wiki/isEntry
[:vhs:]: https://asciinema.org/a/338745