node to luvit gotchas

While luvit has a similar api to node here are things to look for when converting code.

• Arrays and Hashtables is a single variant type table
• Arrays start at index 1
• The directory catalog index.js is init.lua
• path.exists, path.existsSync are fs.exists, fs.existsSync respectively
• global is _G
• Object reference must be passed to methods explicitly or use ':' operator. foo:bar() instead of foo.bar(foo)
• node_modules/ directory corresponds to modules/
• The CommonJS module and exports is not used. Simply return a value from a module:

-- equivalent to module.exports = {foo: bar}
return { foo = bar }