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# to-fast-properties [](https://travis-ci.org/sindresorhus/to-fast-properties)
> Force V8 to use fast properties for an object
[Read more.](https://stackoverflow.com/questions/24987896/)
Use `%HasFastProperties(object)` and `--allow-natives-syntax` to check whether an object already has fast properties.
## Install
```
$ npm install to-fast-properties
```
## Usage
```js
const toFastProperties = require('to-fast-properties');
const object = {
foo: true,
bar: true
};
delete object.foo;
// `object` now has slow properties
toFastProperties(object);
// `object` now has fast properties
```