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asset-wrap

v0.9.4

Published

Asset management framework for nodejs

Downloads

270

Readme

Asset-Wrap is a simple asset manager for node.

Goals

  1. build anytime (middleware or dynamically)
  2. css: support stylus, less, and sass
  3. js: support coffee-script
  4. use async whenever possible
  5. support cluster
  6. easily extendible
  7. watch for file changes
  8. serve files from s3 or cloudfiles or azure

Install

npm install asset-wrap

Asset

An asset representing a css or js file

asset = new wrap.Asset {
  src: '/js/app.js'
}

Options

  • cache: maxAge to set cache headers
  • src: the path to your source file
  • dst: the location to serve your file from (without the md5 appended)
  • url: the dst with the md5 appended
  • cdn: cdn information to push assets to
  • data: the content
  • ext: the file extension of the wrapped asset
  • md5: the md5 of the wrapped content
  • tag: the full html tag to render

Events

  • complete: Emitted after asset has content, headers, url, etc.
  • compiled: Emitted once asset.data is compiled
  • error: Emitted if there is an error compiling the asset

Creating a Custom Asset

class MyAsset extends wrap.Asset
  ext: 'txt'
  name: 'my-asset'
  type: 'text/plain'
  compile: ->
    @data = 'hello world'
    @emit 'compiled'

Assets

A group of Assets. Use when you're compiling multiple assets or for middleware

assets = new wrap.Assets [
  new wrap.Snockets {
    src: 'assets/hello.coffee'
  }
  new wrap.Stylus {
    src: 'assets/hello.styl'
  }
], {
  compress: true
  watch: true
}, (err) =>
  throw err if err

Options

Options are the exact same as an asset. Any options given here are passed down to each asset.

Asset Types

  • CSSAsset
  • LessAsset
  • SassAsset
  • SnocketsAsset
  • StylusAsset

Examples

Use as Middleware with ZappaJS

require('zappajs') ->
  wrap = require 'asset-wrap'
  assets = new wrap.Assets [
    new wrap.Snockets {
      src: 'assets/hello.coffee'
      dst: '/js/hello.js'
    }
    new wrap.Stylus {
      src: 'assets/hello.styl'
      dst: '/css/hello.css'
    }
  ], {
    compress: true
    watch: true
  }, (err) =>
    throw err if err
    @use assets.middleware

    @get '/': ->
      @render index: {
        assets: assets
      }

    @view index: ->
      head ->
        text @assets.tag '/css/hello.css'
        text @assets.tag '/js/hello.js'
      body ->
        a href: @assets.url '/css/hello.css', ->
          'View CSS'
        pre ->
          @assets.data '/css/hello.css'
        a href: @assets.url '/js/hello.js', ->
          'View Javascript'
        pre ->
          @assets.data '/js/hello.js'

Generate Asset Dynamically in ZappaJS

require('zappajs') ->
  wrap = require 'asset-wrap'

  @get '/': ->
    asset = new wrap.Snockets {
      src: 'assets/hello.coffee'
      compress: true
    }, (err) =>
      @res.send 500, err if err
      @res.setHeader 'ContentType', asset.type
      @res.send asset.data

Generate Asset Dynamically With Cluster

cluster = require 'cluster'
os      = require 'os'

if cluster.isMaster
  # Fork workers
  cluster.fork() for i in os.cpus()
  cluster.on 'exit', (worker, code, signal) ->
    console.log "worker #{worker.process.pid} died"
else
  # Workers can share any TCP connection
  require('zappajs') ->
    wrap = require 'asset-wrap'

    @get '/js/hello.js': ->
      asset = new wrap.Snockets {
        src: 'assets/hello.coffee'
        dst: '/js/hello.js'
        compress: true
      }, (err) =>
        @res.send 500, err if err
        @res.setHeader 'ContentType', asset.type
        @res.send asset.data

    @get '/': ->
      @render 'index': {layout: no}

    @view index: ->
      body ->
        div ->
          a href: '/js/hello.js', ->
            'View Javascript'

Credit

Much inspiration from the other asset management tools out there.

License

©2013 Bryant Williams under the MIT license:

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.