# 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 ```
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