# @lavadrop/pick-by

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Part of a [library](../../../../) of zero-dependency npm modules that do just
one thing.

- 100% [TypeScript](http://www.typescriptlang.org/) support.
- It's not a party without [`Lavadrop`](../../../../)!

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min + gzip | 124 bytes

[source](https://github.com/jedmao/lavadrop/blob/master/src/packages/pick-by/pickBy.ts)

Creates an object composed of the object properties for which predicate returns truthy.

## Usage

```ts
import pickBy from '@lavadrop/pick-by'

const obj = { a: 0, b: '', c: true, d: 'hello' }
pickBy(obj)
// => { c: true, d: 'hello' }
```

## Parameters

| Name        | Type                                              | Description                        |
| :---------- | :------------------------------------------------ | :--------------------------------- |
| `object`    | `T`                                               | The source object.                 |
| `predicate` | `<K extends keyof T>(value: T[K], key: K) => any` | The function invoked per property. |

### Type parameters

| Name | Constraint |
| :--- | :--------- |
| `T`  | `object`   |
| `K`  | `keyof T`  |

## Returns

The new object.

### Return type

```ts
Partial<T>
```