You are correct about "last", "start's, etc., but there are also good examples in the CS sourcecode of easily avoiding naming conflicts with a sensible naming convention:
browser.coffee:CoffeeScript = require './coffee-script'
coffee-script.coffee:{Lexer,RESERVED} = require './lexer'
coffee-script.coffee: {Module} = require 'module'
command.coffee:{EventEmitter} = require 'events'
grammar.coffee:{Parser} = require 'jison'
lexer.coffee:{Rewriter, INVERSES} = require './rewriter'
nodes.coffee:{Scope} = require './scope'
nodes.coffee:{RESERVED} = require './lexer'
repl.coffee:{Script} = require 'vm'
