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js-utils/docs/api/js-utils.doesexist.md

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feat: add utils from isolex
2020-03-29 13:43:52 +00:00
<!-- Do not edit this file. It is automatically generated by API Documenter. -->
[Home](./index.md) &gt; [@apextoaster/js-utils](./js-utils.md) &gt; [doesExist](./js-utils.doesexist.md)
## doesExist() function
Check if a variable is not nil.
<b>Signature:</b>
```typescript
export declare function doesExist<T>(val: Optional<T>): val is T;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
feat(build): bundle as ES module BREAKING CHANGE: removes the umd module in favor of a smaller, standard ES module. Consumers will need native support for ES modules (recent evergreen browsers) or a bundler with the same (rollup, webpack, etc).
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| val | [Optional](./js-utils.optional.md)<!-- -->&lt;T&gt; | |
feat: add utils from isolex
2020-03-29 13:43:52 +00:00
<b>Returns:</b>
feat(build): bundle as ES module BREAKING CHANGE: removes the umd module in favor of a smaller, standard ES module. Consumers will need native support for ES modules (recent evergreen browsers) or a bundler with the same (rollup, webpack, etc).
2020-06-29 23:23:16 +00:00
val is T
feat: add utils from isolex
2020-03-29 13:43:52 +00:00