npm package: @fav/prop.pick
Description: Creates a plain object and copys properties of a source object only specified
Author: Takayuki Sato
Latest version: 1.0.1

# [@fav/prop.pick][repo-url] [![NPM][npm-img]][npm-url] [![MIT License][mit-img]][mit-url] [![Build Status][travis-img]][travis-url] [![Build Status][appveyor-img]][appveyor-url] [![Coverage status][coverage-img]][coverage-url]

Creates a new plain object and copys properties of a source object only specified.

> "fav" is an abbreviation of "favorite" and also the acronym of "for all versions".
> This package is intended to support all Node.js versions and many browsers as possible.
> At least, this package supports Node.js >= v0.10 and major Web browsers: Chrome, Firefox, IE11, Edge, Vivaldi and Safari.


## Install

To install from npm:

```sh
$ npm install --save @fav/prop.pick
```

***NOTE:*** *npm < 2.7.0 does not support scoped package, but old version Node.js supports it. So when you use such older npm, you should download this package from [github.com][repo-url], and move it in `node_modules/@fav/prop.pick/` directory manually.*


## Usage

For Node.js:

```js
var pick = require('@fav/prop.pick');
pick({ a: 1, b: 2, c: 3 }, ['b']); // => { b: 2 }
```

For Web browsers:

```js
<script src="fav.prop.pick.min.js"></script>
<script>
var pick = fav.prop.pick;
pick({ a: 1, b: 2, c: 3 }, ['b']); // => { b: 2 }
</script>
```

## API

### <u>pick(src, pickedProps) : object</u>

Creates a new plain object and copies enumerable own properties (keys and symbols) of *src* object, and the copied properties are only included in *pickedProps*.

***NOTE:*** *All versions of Node.js allows to use a string array for getting or setting property, like `obj[['a','b']] == obj['a,b']`. An Symbol array is allowed as same until v4, but is not allowed on v5 and later (TypeError is thrown).
To support same behaviors for all versions, this function does not allow to use an array as a property.*

**Parameters:**

| Parameter      |  Type  | Description                                |
|:---------------|:------:|:-------------------------------------------|
| *src*          | object | A source object.                           |
| *pickedProps*  | Array  | A property keys and symbols to be copied. | 

**Returns:**

A plain object which is copied property keys and symbols of a source object.


## Checked                                                                      
### Node.js (4〜)

| Platform  |   4    |   5    |   6    |   7    |   8    |   9    |   10   |
|:---------:|:------:|:------:|:------:|:------:|:------:|:------:|:------:|
| macOS     |&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|
| Windows10 |&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|
| Linux     |&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|

### io.js (1〜3)

| Platform  |   1    |   2    |   3    |
|:---------:|:------:|:------:|:------:|
| macOS     |&#x25ef;|&#x25ef;|&#x25ef;|
| Windows10 |&#x25ef;|&#x25ef;|&#x25ef;|
| Linux     |&#x25ef;|&#x25ef;|&#x25ef;|

### Node.js (〜0.12)

| Platform  |  0.7   |  0.8   |  0.9   |  0.10  |  0.11  |  0.12  |
|:---------:|:------:|:------:|:------:|:------:|:------:|:------:|
| macOS     |        |&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|
| Windows10 |        |&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|
| Linux     |&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|&#x25ef;|

### Web browsers

| Platform  | Chrome | Firefox | Vivaldi | Safari |  Edge  | IE11   |
|:---------:|:------:|:-------:|:-------:|:------:|:------:|:------:|
| macOS     |&#x25ef;|&#x25ef; |&#x25ef; |&#x25ef;|   --   |   --   |
| Windows10 |&#x25ef;|&#x25ef; |&#x25ef; |   --   |&#x25ef;|&#x25ef;|
| Linux     |&#x25ef;|&#x25ef; |&#x25ef; |   --   |   --   |   --   |


## License

Copyright (C) 2017-2018 Takayuki Sato

This program is free software under [MIT][mit-url] License.
See the file LICENSE in this distribution for more details.

[repo-url]: https://github.com/sttk/fav-prop.pick/
[npm-img]: https://img.shields.io/badge/npm-v1.0.1-blue.svg
[npm-url]: https://www.npmjs.com/package/@fav/prop.pick
[mit-img]: https://img.shields.io/badge/license-MIT-green.svg
[mit-url]: https://opensource.org/licenses/MIT
[travis-img]: https://travis-ci.org/sttk/fav-prop.pick.svg?branch=master
[travis-url]: https://travis-ci.org/sttk/fav-prop.pick
[appveyor-img]: https://ci.appveyor.com/api/projects/status/github/sttk/fav-prop.pick?branch=master&svg=true
[appveyor-url]: https://ci.appveyor.com/project/sttk/fav-prop-pick
[coverage-img]: https://coveralls.io/repos/github/sttk/fav-prop.pick/badge.svg?branch=master
[coverage-url]: https://coveralls.io/github/sttk/fav-prop.pick?branch=master