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# style-to-object

[![NPM](https://nodei.co/npm/style-to-object.png)](https://nodei.co/npm/style-to-object/)

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Parse CSS inline style to JavaScript object:

```js
import parse from 'style-to-object';

parse('color: #C0FFEE; background: #BADA55;');
```

Output:

```js
{ color: '#C0FFEE', background: '#BADA55' }
```

[JSFiddle](https://jsfiddle.net/remarkablemark/ykz2meot/) | [Replit](https://replit.com/@remarkablemark/style-to-object) | [Examples](https://github.com/remarkablemark/style-to-object/tree/master/examples)

## Installation

[NPM](https://www.npmjs.com/package/style-to-object):

```sh
npm install style-to-object --save
```

[Yarn](https://yarn.fyi/style-to-object):

```sh
yarn add style-to-object
```

[CDN](https://unpkg.com/style-to-object/):

```html
<script src="https://unpkg.com/style-to-object@latest/dist/style-to-object.min.js"></script>
<script>
  window.StyleToObject(/* string */);
</script>
```

## Usage

Import with ES Modules:

```js
import parse from 'style-to-object';
```

Require with CommonJS:

```js
const parse = require('style-to-object').default;
```

Parse single declaration:

```js
parse('line-height: 42');
```

Output:

```js
{ 'line-height': '42' }
```

Parse multiple declarations:

```js
parse(`
  border-color: #ACE;
  z-index: 1337;
`);
```

Output:

```js
{ 'border-color': '#ACE', 'z-index': '1337' }
```

Parse unknown declarations:

```js
parse('answer: 42;');
```

Output:

```js
{ 'answer': '42' }
```

Invalid declarations/arguments:

<!-- prettier-ignore-start -->

```js
parse(`
  top: ;
  right: 1em;
`); // { right: '1em' }

parse();        // null
parse(null);    // null
parse(1);       // null
parse(true);    // null
parse('top:');  // null
parse(':12px'); // null
parse(':');     // null
parse(';');     // null

parse('top'); // throws Error
parse('/*');  // throws Error
```

<!-- prettier-ignore-end -->

### Iterator

If the 2nd argument is a function, then the parser will return `null`:

```js
parse('color: #f00', () => {}); // null
```

But the function will iterate through each declaration:

<!-- prettier-ignore-start -->

```js
parse('color: #f00', (name, value, declaration) => {
  console.log(name);        // 'color'
  console.log(value);       // '#f00'
  console.log(declaration); // { type: 'declaration', property: 'color', value: '#f00' }
});
```

<!-- prettier-ignore-end -->

This makes it easy to customize the output:

```js
const style = `
  color: red;
  background: blue;
`;
const output = [];

function iterator(name, value) {
  output.push([name, value]);
}

parse(style, iterator);
console.log(output); // [['color', 'red'], ['background', 'blue']]
```

## Migration

### v1

Migrated to TypeScript. Iterator excludes `Comment`. CommonJS requires the `.default` key:

```js
const parse = require('style-to-object').default;
```

## Release

Release and publish are automated by [Release Please](https://github.com/googleapis/release-please).

## Special Thanks

- [inline-style-parser](https://github.com/remarkablemark/inline-style-parser)
- [Contributors](https://github.com/remarkablemark/style-to-object/graphs/contributors)

## License

[MIT](https://github.com/remarkablemark/style-to-object/blob/master/LICENSE)