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Webpack loader for compiling Twig.js templates

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# twig-loader [![Build Status](https://travis-ci.org/zimmo-be/twig-loader.svg)](https://travis-ci.org/zimmo-be/twig-loader)
Webpack loader for compiling Twig.js templates. This loader will allow you to require Twig.js views to your code.

## Installation

`npm install twig-loader`

## Usage

### Webpack 2 and later

[Documentation: Using loaders](https://webpack.js.org/concepts/loaders/)

``` javascript
module.exports = {
  //...

module: {
    rules: [
      {
        test: /\.twig$/,
        use: {
          loader: 'twig-loader',
          options: {
              // See options section below
          },
        }
      }
    ]
  },

node: {
      fs: "empty" // avoids error messages
  }
};
```

### Webpack 1

[Documentation: Using loaders](http://webpack.github.io/docs/using-loaders.html?branch=master)

``` javascript

module.exports = {
    //...

module: {
        rules: [
            {
                test: /\.twig$/,
                loader: "twig-loader",
                options: {
                    // See options section below
                },
            }
        ]
    },

node: {
        fs: "empty" // avoids error messages
    }
};
```

### Options

- `twigOptions`: optional; a map of options to be passed through to Twig.
  Example: `{autoescape: true}`

## Loading templates

```twig
{# File: dialog.html.twig #}
<p>{{title}}</p>
```

```javascript
// File: app.js
var template = require("dialog.html.twig");
// => returns pre-compiled template as a function and automatically includes Twig.js to your project

var html = template({title: 'dialog title'});
// => Render the view with the given context

```

When you extend another view, it will also be added as a dependency. All twig functions that refer to additional templates are supported: import, include, extends & embed.

## Dynamic templates and registering at runtime

twig-loader will only resolve static paths in your templates, according to your webpack configuration.
When you want to use dynamic templates or aliases, they cannot be resolved by webpack, and will be
left untouched in your template. It is up to you to make sure those templates are available in Twig
at runtime by registering them yourself:

``` javascript
var twig = require('twig').twig
twig({
  id: 'your-custom-template-id,
  data: '<p>your template here</p>',
  allowInlineIncludes: true,
  rethrow: true
});
```

Or more advanced when using `webpack.context`:
``` javascript
var twig = require('twig').twig

var context = require.context('./templates/', true, /\.twig$/)
context.keys().forEach(key => {
  var template = context(key);
  twig({
    id: key, // key will be relative from `./templates/`
    data: template.tokens, // tokens are exported on the template function
    allowInlineIncludes: true,
    rethrow: true
  });
});

```

## Changelog
0.4.1 / 2018-06-12
==================
 * Upgrade mocha to fix security vulnerability warning

0.4.0 / 2018-05-17
==================
 * Add ablity to pass options to twig (PR #39)

0.3.1 / 2017-11-08
==================
 * Update to Twig.js 1.10, fixes #29

0.3.0 / 2017-02-19
==================
 * replace full path with a hash and implement mapcache for id/path resolution, fixes #12

0.2.4 / 2016-12-29
==================
 * Downgrade Twig.js back to 0.8.9 because of https://github.com/twigjs/twig.js/issues/440

0.2.3 / 2016-06-11
==================
 * Improve watch operation (rebuilding of modules)
 * Refactoring so compiler and the loader are in seperate modules
 * Add Twig as peer dependency

0.2.2 / 2016-06-03
==================

* Add `embed` support
 * Update Twig.js version

0.2.1 / 2016-04-18
==================

* Improve `import` support (https://github.com/zimmo-be/twig-loader/pull/8)
* Rethrow exceptions when they occur during rendering to improve testing

0.2.0 / 2016-01-21
==================

* Add support for import statements (useful for Macro's)
* Correctly resolve dependencies from include/import/extend statements with relative path support: [\#3] and [\#5]
* CHANGE: No longer add the `.twig` file extension. After upgrading twig-loader, you may need to update your files and add `.twig` manually

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