js2lua-howto.md

How to X in js2lua

js2lua repo.

Most of the things are easily translated without any problem, but there are a couple of cases where some special attention is required. This list might grow or shrink depending on whatever I find.

Disable option

js2lua --no-optionName file.js, i.e js2lua --no-index0to1 file.js

Default options:

const defaultOptions = {
  debug: false,
  importStatementHoisting: true,
  transformToString: true,
  transformString: true,
  transformJSONStringify: true,
  transformJSONParse: true,
  transformParseFloat: true,
  transformParseInt: true,
  transformNumber: true,
  transformIsArray: true,
  transformConsoleLog: true,
  moduleExportsToReturn: true,
  index0To1: true,
  tryTranslateClass: true,
  disableUpdateExpressionCallback: true,
  renameCatchErrorIfNeeded: true,
  disableClassCall: true,
};

Dot function invocation (awaiting answer in #2)

some.func();
new some.func();

some:func()
some.func()

Passing array objects

func([ "someval" ]);

func({ "someval" })

Add class methods

string.prototype.replace = function() {}

function string:replace() end

Recieve multiple values

AFAK not possible

Foreach

for (let [key, value] in tbl) {}

for key, value, __ in pairs(tbl) do end

Switch cases

Default case must be there and must have break in it otherwise it'll loop forever