Lua standard libraries

The Lua interpreter (happyview-lua) keeps these Lua 5.4 standard libraries and builtins. JavaScript and TypeScript scripts get their engine’s own built-ins; see Languages.

string

The whole string library.

table

The whole table library.

math

The whole math library.

os (safe subset)

Only these three functions are available from the os module:

• time
• date
• difftime

Every other os function is absent, including os.execute, os.remove, os.rename, os.exit, os.getenv and os.clock.

coroutine

The whole coroutine library.

utf8

The whole utf8 library.

Builtins

• print
• tostring
• tonumber
• type
• pairs
• ipairs
• next
• select
• error
• pcall
• xpcall
• assert
• setmetatable
• getmetatable
• rawget
• rawset
• rawequal
• rawlen
• warn
• _G
• _VERSION

Removed modules

These parts of standard Lua are removed and unavailable in the sandbox:

io, debug, package, dofile, loadfile, load, collectgarbage

Lua’s own require is removed too, and HappyView installs its own in its place: it loads installed library plugins and the internal.* built-ins. See Built-in modules.