https://github.com/flpvsk/looks

JavaScript code reformatter.
https://github.com/flpvsk/looks

Last synced: about 2 months ago
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JavaScript code reformatter.

• Host: GitHub
• URL: https://github.com/flpvsk/looks
• Owner: flpvsk
• Created: 2014-09-21T17:28:34.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2014-11-08T23:53:15.000Z (about 10 years ago)
• Last Synced: 2024-12-02T00:49:52.190Z (2 months ago)
• Language: JavaScript
• Size: 246 KB
• Stars: 11
• Watchers: 5
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# looks

## Code reformatting tool for JavaScript

**WARN: Not ready for dev or production use!**

*Before:*

```js

var y,x =1;

y=function (){

  return (13+1 ) / 2

}

```

*Run:*

```

./bin/looks airbnb index.js

```

*After:*

```js

var x = 1,

    y;

y = function() {

  return (13 + 1) / 2;

};

```

### Main Idea

**looks** allows programmers to implement *codestyles*.

*Codestyle* is a combination of *transformer* and *printer*.

*Transformer* does [recast](https://github.com/benjamn/recast) *ast*

transformations.

*Printer* prints *ast*.

### Implemented transformers

- [ComposedTransformer](./lib/transformers/ComposedTransformer.js)

    Allows to do ordered composition of *transformers*.

- [GatherDeclarations](./lib/transformers/GatherDeclarations.js)

    Gather all `var`s in function/module and place on top of

    function/module.

    *Before*:

    ```js

    function f() {

      x = y;

      var a;

      var b = 1;

    }

    ```

    *After*:

    ```js

    function f() {

      var a, b = 1;

      x = y;

    }

    ```

- [SortDeclarationsByInit](./lib/transformers/SortDeclarationsByInit.js)

    Place declarators with init before declarations without init.

    *Before*

    ```js

    function f() {

      var x, y = 1;

    }

    ```

    *After*

    ```js

    function f() {

      var y = 1, x;

    }

    ```

- [SortBodyByPriority](./lib/transformers/SortBodyByPriority.js)

    Sort function/module body by priority:

    - `'use strict';`

    - Function Declarations

    - Variable Declarations

    - everything else

    *Before*

    ```js

    function f() {

      a = b + 1;

      var i;

      function z() {}

    }

    ```

    *After*

    ```js

    function f() {

      function z() {}

      var i;

      a = b + 1;

    }

    ```