wrap.lua output file example. See https://board.dualthegame.com/index.php?/topic/20161-lua-tool-script-packagerconfigurator-wraplua/ for more info.

wrap-lua-example-output.json

{
  "slots":{
    "0":{
      "name":"screen",
      "type":{
        "methods":[],
        "events":[]
      },
      "_elementType":"screen"
    },
    "1":{
      "name":"slot2",
      "type":{
        "methods":[],
        "events":[]
      }
    },
    "2":{
      "name":"slot3",
      "type":{
        "methods":[],
        "events":[]
      }
    },
    "3":{
      "name":"slot4",
      "type":{
        "methods":[],
        "events":[]
      }
    },
    "4":{
      "name":"slot5",
      "type":{
        "methods":[],
        "events":[]
      }
    },
    "5":{
      "name":"slot6",
      "type":{
        "methods":[],
        "events":[]
      }
    },
    "6":{
      "name":"slot7",
      "type":{
        "methods":[],
        "events":[]
      }
    },
    "7":{
      "name":"slot8",
      "type":{
        "methods":[],
        "events":[]
      }
    },
    "8":{
      "name":"slot9",
      "type":{
        "methods":[],
        "events":[]
      }
    },
    "9":{
      "name":"slot10",
      "type":{
        "methods":[],
        "events":[]
      }
    },
    "-1":{
      "name":"unit",
      "type":{
        "methods":[],
        "events":[]
      },
      "_elementType":"control"
    },
    "-2":{
      "name":"system",
      "type":{
        "methods":[],
        "events":[]
      },
      "_elementType":"system"
    },
    "-3":{
      "name":"library",
      "type":{
        "methods":[],
        "events":[]
      },
      "_elementType":"library"
    }
  },
  "handlers":[{
      "key":"0",
      "filter":{
        "slotKey":0,
        "signature":"mouseDown(x,y)",
        "args":[{
            "variable":"*"
          },{
            "variable":"*"
          }]
      },
      "code":"if not __wrap_lua__stopped and script.onMouseDown then\n  local ok, message = xpcall(script.onMouseDown,__wrap_lua__traceback,x,y,screen)\n  if not ok then __wrap_lua__error(message) end\nend"
    },{
      "key":"1",
      "filter":{
        "slotKey":0,
        "signature":"mouseUp(x,y)",
        "args":[{
            "variable":"*"
          },{
            "variable":"*"
          }]
      },
      "code":"if not __wrap_lua__stopped and script.onMouseUp then\n  local ok, message = xpcall(script.onMouseUp,__wrap_lua__traceback,x,y,screen)\n  if not ok then __wrap_lua__error(message) end\nend"
    },{
      "key":"2",
      "filter":{
        "slotKey":-1,
        "signature":"start()",
        "args":[]
      },
      "code":"-- error handling code added by wrap.lua\n__wrap_lua__stopped = false\n__wrap_lua__stopOnError = false\n__wrap_lua__rethrowErrorAlways = false\n__wrap_lua__rethrowErrorIfStopped = true\n__wrap_lua__printError = true\n__wrap_lua__showErrorOnScreens = true\n\nfunction __wrap_lua__error (message)\n  if __wrap_lua__stopped then return end\n\n  -- make the traceback more readable and escape HTML syntax characters\n  message = tostring(message):gsub('\"%-%- |STDERROR%-EVENTHANDLER[^\"]*\"', 'chunk'):gsub(\"&\", \"&amp;\"):gsub(\"<\", \"&lt;\"):gsub(\">\", \"&gt;\")\n\n  local unit = unit or self or {}\n\n  if __wrap_lua__showErrorOnScreens then\n    for _, value in pairs(unit) do\n      if type(value) == \"table\" and value.setCenteredText and value.setHTML then -- value is a screen\n        if message:match(\"\\n\") then\n          value.setHTML([[\n<pre style=\"color: white; background-color: black; font-family: Consolas,monospace; font-size: 4vh; white-space: pre-wrap; margin: 1em\">\nError: ]] .. message .. [[\n</pre>]])\n        else\n          value.setCenteredText(message)\n        end\n      end\n    end\n  end\n\n  if __wrap_lua__printError and system and system.print then\n    system.print(\"Error: \" .. message:gsub(\"\\n\", \"<br>\"))\n  end\n\n  if __wrap_lua__stopOnError then\n    __wrap_lua__stopped = true\n  end\n\n  if __wrap_lua__stopped and unit and unit.exit then\n    unit.exit()\n  end\n\n  if __wrap_lua__rethrowErrorAlways or (__wrap_lua__stopped and __wrap_lua__rethrowErrorIfStopped) then\n    error(message)\n  end\nend\n\n-- in case traceback is removed or renamed\n__wrap_lua__traceback = traceback or (debug and debug.traceback) or function (arg1, arg2) return arg2 or arg1 end\n\nlocal ok, message = xpcall(function ()\n\n-- script code\n\n-- Define a global script object with event handlers\nscript = {}\n\nfunction script.onStart ()\n  -- Display some text\n  screen.setCenteredText(\"script started\")\n\n  -- Create some timers to show that the script is working\n  unit.setTimer(\"a\", 2) -- timer id \"a\", ticks every 2 seconds\n  unit.setTimer(\"b\", 3) -- timer id \"b\", ticks every 3 seconds\nend\n\nfunction script.onStop ()\n  screen.setCenteredText(\"script stopped\")\nend\n\nfunction script.onActionStart (actionName)\n  screen.setCenteredText(actionName .. \" key pressed\")\nend\n\nfunction script.onActionStop (actionName)\n  screen.setCenteredText(actionName .. \" key released\")\nend\n\nfunction script.onTick (timerId)\n  screen.setCenteredText(\"timer \" .. timerId .. \" ticked\")\nend\n\n-- Other events that are available by default:\n-- * onActionLoop(actionName): action key is held\n-- * onUpdate(): executed once per frame\n-- * onFlush(): executed 60 times per second, for physics calculations only; setEngineCommand must be called from here\n\n-- Slot events are available if slot type is set with the --slot command line option.\nfunction script.onMouseDown (x, y)\n  screen.setCenteredText(\"mouse down: x=\" .. x .. \" , y=\" .. y)\nend\n\n-- Call the start event handler\n-- Alternatively, initialization code can be placed anywhere in this file.\n-- The only requirement is that there is a global \"script\" object with event handlers\nscript.onStart()\n\n\n-- error handling code added by wrap.lua\nend, __wrap_lua__traceback)\nif not ok then\n  __wrap_lua__error(message)\n  if not script then script = {} end\nend"
    },{
      "key":"3",
      "filter":{
        "slotKey":-1,
        "signature":"stop()",
        "args":[]
      },
      "code":"if not __wrap_lua__stopped and script.onStop then\n  local ok, message = xpcall(script.onStop,__wrap_lua__traceback,unit)\n  if not ok then __wrap_lua__error(message) end\nend"
    },{
      "key":"4",
      "filter":{
        "slotKey":-1,
        "signature":"tick(timerId)",
        "args":[{
            "variable":"*"
          }]
      },
      "code":"if not __wrap_lua__stopped and script.onTick then\n  local ok, message = xpcall(script.onTick,__wrap_lua__traceback,timerId,unit)\n  if not ok then __wrap_lua__error(message) end\nend"
    },{
      "key":"5",
      "filter":{
        "slotKey":-2,
        "signature":"actionStart(action)",
        "args":[{
            "variable":"*"
          }]
      },
      "code":"if not __wrap_lua__stopped and script.onActionStart then\n  local ok, message = xpcall(script.onActionStart,__wrap_lua__traceback,action,system)\n  if not ok then __wrap_lua__error(message) end\nend"
    },{
      "key":"6",
      "filter":{
        "slotKey":-2,
        "signature":"actionStop(action)",
        "args":[{
            "variable":"*"
          }]
      },
      "code":"if not __wrap_lua__stopped and script.onActionStop then\n  local ok, message = xpcall(script.onActionStop,__wrap_lua__traceback,action,system)\n  if not ok then __wrap_lua__error(message) end\nend"
    },{
      "key":"7",
      "filter":{
        "slotKey":-2,
        "signature":"actionLoop(action)",
        "args":[{
            "variable":"*"
          }]
      },
      "code":"if not __wrap_lua__stopped and script.onActionLoop then\n  local ok, message = xpcall(script.onActionLoop,__wrap_lua__traceback,action,system)\n  if not ok then __wrap_lua__error(message) end\nend"
    },{
      "key":"8",
      "filter":{
        "slotKey":-2,
        "signature":"update()",
        "args":[]
      },
      "code":"if not __wrap_lua__stopped and script.onUpdate then\n  local ok, message = xpcall(script.onUpdate,__wrap_lua__traceback,system)\n  if not ok then __wrap_lua__error(message) end\nend"
    },{
      "key":"9",
      "filter":{
        "slotKey":-2,
        "signature":"flush()",
        "args":[]
      },
      "code":"if not __wrap_lua__stopped and script.onFlush then\n  local ok, message = xpcall(script.onFlush,__wrap_lua__traceback,system)\n  if not ok then __wrap_lua__error(message) end\nend"
    }],
  "methods":[],
  "events":[]
}