2.0.0 Work In Progress Pull Request

[lukeapage]

For reference and comparison, help and suggestions welcome

2.0 required 'stuff'

• Remove dist files and move to a single less.js
• refactor out environment
• Get browser building using browserify
• Tidy up structure. we shouldn't have everything in tree!
• Move browser.js and lessc_helper.js to the relevant environment folder
• Tidy up parser - move out input reader and imports etc.
• make less.render available in all environments and encourage its usage instead of manual creation of parser and toCSS (allowing us to make calling toCSS asyncronous and more complex)
• move toCSS from parser
• Move out chunker
• Move clean-css to lessc dependencies, not an option passed to the parser (or alternately a plugin, along the lines we will also use for autoprefixer)
• Use promises instead of EventEmitter for less.render
• deprecate chunker
• Improved comment parsing
• move clean css to plugin
• look at the Error pull request and whether we should inherit in LessError
• expose everything on less, not just some things. Probably also make it match directories
• look at how easy it will be to extend import manager - are there any needed api changes?
• sourcemap support for autoprefixer
• change import manager to a class?
• rename env to be context to avoid collisions with our new environment?
• review current plugins api and compare to issue, see if anything extra is a breaking change.
• create a logger system with a null logger - tidy up browser logger and test logger
• Tidy up the environment api if needed and ensure documented in api.js
• clear file managers added during instance operations -
• and add a addFileManager to plugin manager
• Seperate PluginManager and NodePluginManager
• Make PluginManager be created per instance and run on options
• Code comments and extraction to form api documentation
• integrate https://github.com/less/less.js/pull/1972/files
• Support asyncronous functions (eval will already have the capability to be async. Create a asyncEvalNode which proxies eval/toCSS. Add baseline function then with immediate invocation to the node base class. go through every eval call and after every eval, execute in a then. store promises on env and then complete when finished :S)
• look at sourcemap defaults and whether any improvements should be made
• expose file cache
• if lessc is installed globally can it pick up local plugins?
• assign a beta version and make sure it doesn't reject the minVersions of plugins because its labelled beta
• good manual testing or automated testing of lessc