Consolidate.js

Template engine consolidation library.

Installation

$ npm install consolidate

Supported template engines

atpl
doT.js (website)
dust (unmaintained) (website)
dustjs-linkedin (maintained fork of dust) (website)
eco
ect (website)
ejs
haml
haml-coffee
hamlet
handlebars (website)
hogan (website)
htmling
jade (website)
jazz
jqtpl
JUST
liquor
lodash (website)
mote (website)
mustache
nunjucks (website)
pug (formerly jade) (website)
QEJS
ractive
react
slm
swig (website)
templayed
twig
liquid (website)
toffee
underscore (website)
vash
walrus (website)
whiskers

NOTE: you must still install the engines you wish to use, add them to your package.json dependencies.

API

All templates supported by this library may be rendered using the signature (path[, locals], callback) as shown below, which happens to be the signature that Express 3.x supports so any of these engines may be used within Express.

NOTE: All this example code uses cons.swig for the swig template engine. Replace swig with whatever templating you are using. For example, use cons.hogan for hogan.js, cons.jade for jade, etc. console.log(cons) for the full list of identifiers.

var cons = require('consolidate');
cons.swig('views/page.html', { user: 'tobi' }, function(err, html){
  if (err) throw err;
  console.log(html);
});

Or without options / local variables:

var cons = require('consolidate');
cons.swig('views/page.html', function(err, html){
  if (err) throw err;
  console.log(html);
});

To dynamically pass the engine, simply use the subscript operator and a variable:

var cons = require('consolidate')
  , name = 'swig';

cons[name]('views/page.html', { user: 'tobi' }, function(err, html){
  if (err) throw err;
  console.log(html);
});

Promises

Additionally, all templates optionally return a promise if no callback function is provided. The promise represents the eventual result of the template function which will either resolve to a string, compiled from the template, or be rejected. Promises expose a then method which registers callbacks to receive the promise’s eventual value and a catch method which the reason why the promise could not be fulfilled. Promises allow more synchronous-like code structure and solve issues like race conditions.

var cons = require('consolidate');

cons.swig('views/page.html', { user: 'tobi' })
  .then(function (html) {
    console.log(html);
  })
  .catch(function (err) {
    throw err;
  });

Caching

To enable or disable caching simply pass { cache: true/false }. Engines may use this option to cache things reading the file contents, compiled Functions etc. Engines which do not support this may simply ignore it. All engines that consolidate.js implements I/O for will cache the file contents, ideal for production environments.

var cons = require('consolidate');
cons.swig('views/page.html', { cache: false, user: 'tobi' }, function(err, html){
  if (err) throw err;
  console.log(html);
});

Express 3.x example

var express = require('express')
  , cons = require('consolidate')
  , app = express();

// assign the swig engine to .html files
app.engine('html', cons.swig);

// set .html as the default extension
app.set('view engine', 'html');
app.set('views', __dirname + '/views');

var users = [];
users.push({ name: 'tobi' });
users.push({ name: 'loki' });
users.push({ name: 'jane' });

app.get('/', function(req, res){
  res.render('index', {
    title: 'Consolidate.js'
  });
});

app.get('/users', function(req, res){
  res.render('users', {
    title: 'Users',
    users: users
  });
});

app.listen(3000);
console.log('Express server listening on port 3000');

Template Engine Instances

Template engines are exposed via the cons.requires object, but they are not instantiated until you've called the cons[engine].render() method. You can instantiate them manually beforehand if you want to add filters, globals, mixins, or other engine features.

var cons = require('consolidate'),
  nunjucks = require('nunjucks');

// add nunjucks to requires so filters can be
// added and the same instance will be used inside the render method
cons.requires.nunjucks = nunjucks.configure();

cons.requires.nunjucks.addFilter('foo', function () {
  return 'bar';
});

Notes

You can pass partials with options.partials
For using template inheritance with nunjucks, you can pass a loader with options.loader.
To use filters with tinyliquid, use options.filters and specify an array of properties, each of which is a named filter function. A filter function takes a string as a parameter and returns a modified version of it.
To use custom tags with tinyliquid, use options.customTags to specify an array of tag functions that follow the tinyliquid custom tag definition.
The default directory used with the include tag with tinyliquid is the current working directory. To override this, use options.includeDir.
React To render content into a html base template (eg. index.html of your React app), pass the path of the template with options.base.

Running tests

Install dev deps:

$ npm install -d

Run the tests:

$ make test

License

(The MIT License)

Copyright (c) 2011-2016 TJ Holowaychuk <tj@vision-media.ca>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

db-murphy/consolidate.js

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