Flour

Flour is a set of simple build tools for your Cakefiles.

Changelog

Usage

Add flour and your required pre-processors/compilers to your package.json:

{
  "name": "dancingrobot",
  ...
  "dependencies": {
    "flour": "",
    "uglify-js": "",
    "coffee-script": ""
  },
  ...
}

Then run npm install, and require 'flour' at the top of your Cakefile. A few methods are available in the global scope.

This is what a typical Cakefile could look like:

require 'flour'

task 'build:coffee', ->
    compile 'coffee/app.coffee', 'js/app.js'

task 'build:less', ->
    compile 'less/main.less', 'css/main.css'

task 'build:plugins', ->
    bundle [
        'vendor/underscore.js'
        'vendor/hogan.js'
        'vendor/backbone.js'
    ], 'js/plugins.js'

task 'build', ->
    invoke 'build:plugins'
    invoke 'build:coffee'
    invoke 'build:less

task 'watch', ->
    invoke 'build:less'
    invoke 'build:coffee'

    watch 'less/*.less', -> invoke 'build:less'
    watch 'coffee/app.coffee', -> invoke 'build:coffee'

task 'lint', 'Check javascript syntax', ->
    lint 'js/feature.js'

(if the global pollution hurts your feelings you can remove them with flour.noConflict(). That will bring the global object back to it's previous state)

Each of these functions accepts either a file path or a list of files. Simple wildcard paths (*.xxx) are allowed. For example:

watch [
    'less/main.less'
    'less/reset.less'
    'less/print.less'
], -> invoke 'build:less'

You can also access the resulting output by passing a callback:

compile 'coffee/app.coffee', (output) ->
    # do something with the compiled output
    mail.send subject: 'Project file', to: 'grandma@hotmail.com', body: output

# verify the CoffeeScript compiler output
compile 'coffee/app.coffee', 'js/app.js', -> lint 'js/app.js'

Adapters

These are the current adapters and the required modules:

Compilers

• CoffeeScript: coffee-script
• LESS: less
• Stylus: stylus

Minifiers

• Javascript: uglify-js

Linters

• Javascript: 'jshint'

Creating new adapters is very easy, take a look at the adapters/ folder for guidance.

Reference

Compile

Compile CoffeeScript, LESS, Stylus, Handlebars templates:

compile(file, [destination], [callback])

Usage

compile 'app.coffee', 'app.js'

compile 'cold.coffee', 'app.js', (output) ->
    console.log 'Done!'

compile 'cold.coffee', (output) ->
    console.log output.transform()

Some compilers may accept options that will get proxied to their respective libraries. For example, you can disable compression for LESS or Stylus:

flour.compilers.less.compress = false
flour.compilers.styl.compress = false

Enable source maps for the CoffeeScript compiler:

flour.compilers.coffee.sourceMap = on

Or customize the LESS include path with

flour.compilers.less.paths = ['/path/to/my/less/libs/']

Bundle

Compile, minify and join a set of files:

bundle(files, destination)

Usage

// preservers the list order
bundle [
    'lib/jquery.js'
    'lib/underscore.js'
    'lib/backbone.js'
], 'js/bundle.js'

// system-dependent order
bundle 'js/*.js', 'js/all.js'

Watch

Watch files for changes:

watch(files, action)

Usage

watch 'src/app.coffee', ->
    compile 'lib/app.js'

# best used with predefined tasks:

task 'build', ->
    bundle '*.coffee', 'app.js'

task 'watch', ->
    watch [
        'modules.coffee'
        'user.coffee'
        'main.coffee'
    ], ->
        invoke 'build'

# or simply
task 'watch', ->
    watch '*.coffee', -> invoke 'build'

Lint

Check file syntax (uses JSHint):

lint(file, [options], [globals]) # see http://www.jshint.com/options/

Usage

task 'lint', ->

    lint 'scripts/*.js'

Minify

Minify files (currently only Javascript using UglifyJS):

minify(file, [destination], [callback])

Extensibility

You can add new minifiers and compilers to flour:

flour.minifiers['dumb'] = (file, cb) ->
    file.read (code) ->
        cb code.replace(/\s*/, '')

flour.compilers['odd'] = (file, cb) ->
    odd = require 'odd-lib'
    file.read (code) ->
        cb odd.compile code

Tips

Disable the JS minifier during development

task 'watch', ->
    flour.minifiers.disable 'js'

    watch 'scripts/*.coffee', -> invoke 'build'

Pre-compile Hogan templates

flour.compilers['mustache'] = (file, cb) ->
    hogan = require 'hogan.js'
    file.read (code) ->
        cb "App.templates['#{file.base}']=${hogan.compile code, asString: true};"

task 'build:templates', ->
    bundle 'views/*.mustache', 'resources/views.js'

Why use flour?

While Grunt, brewerjs, H5BP-build-script, Yeoman and other similar projects have the same (and some more advanced) capabilities, they are increasingly complex to setup.

The goal of Flour is to provide a small and simple API that caters for the most common build tasks, without requiring you to adjust your project structure, install command-line tools or create long configuration files.

Changelog

v0.5.7

• fixes for CoffeeScript v1.7

v0.5.4

• enable options forwarding for minifiers
• fix bundle behaviour when no output path given

v0.5.2

• coffeescript sourcemap support

v0.5.1

• pass through all options to adapters. white-listing is not mantainable.
• add markdown compiler

v0.5

• flour.minifiers.disable('js'), enables/disables all if no argument given
• compile handlebars *.hbs templates

v0.4.12

• expand paths containing patterns inside bundle() array argument (#22)

v0.4.11

• mkdir_p on compile (#20)

v0.4.10

• compatibility fix for CoffeeScript 1.5.0

v0.4.9

• fix lint callback arguments
• breaking change: call callback only once when watching multiple files. each file is a key in the results object
• add yuicompress option for LESS compiler

v0.4.8

• output to multiple files with flour.compile 'src/*.coffee', '*' and variations

v0.4.5 / v0.4.6

• handle single file path as input for bundle()
• better handling of wildcard paths using minimatch

v0.4.4

• add back support for uglify-js < 2.0

v0.4.0

• tests!
• fix file buffer bug
• accept options for adapters, enables disabling compression for LESS and Stylus

v0.3.3

• bugfixes

v0.3.2

• add node-hound as a dependency for file watching
• watch whole directory trees: watch src/`, -> invoke 'build' (listens for new files and deletes too)
• fix error handlers leak

v0.3.1

• fix extension handling bug

v0.3.0

• flour doesn't install it's adapter dependencies anymore, it's up to you to add them to your project's package.json