Simple methods coverage task

Cakefile

option '-f', '--file [FILE]', 'File to cover'
task 'coverage:methods', 'Returns methods defined in given file', (opts) ->
    [fs, regex] = [
        require 'fs'
        new RegExp '([\\w\\.\\_]+)?\\s*?\\=\\s*?function\\(', 'gm'
    ]

    if not opts.file?
        util.error 'no file specified', 'coverage'
        return

    file = opts.file
    fs.exists file, (_e) ->
        if _e
            fs.readFile file, (e, c) ->
                throw e if e
                matches = while _m = regex.exec c
                    _m[1]
                if matches.length isnt 0
                    util.info 'found '+matches.length+' match(es)', 'coverage'
                    util.flatout matches
                else
                    util.info 'no matches found', 'coverage'
        else
            util.error 'file not exists', 'coverage'
            return