Currently, variables/functions are declared locally and exported at the end of their block.
TS:

export let x = 12;

x = x + 13;

local exports = exports or {}
local x = 12;
x = (x+13);
exports.x = x
return exports

We should change the translation to:

local exports = exports or {}
exports.x = 12;
exports.x = exports.x + 13;

The problem is that there is no easy way to find out if an variable/identifier was exported after declaration.

Possible Solutions:

• Check if export flag is set in the variablestatement parentOf(checker.getType(identifier).getSymbol().Declarations[0] and check the parent node for export modifier

• Check the sourcefile or namespace symbol's export table and check if the identifiers symbol is in that table this.checker.getTypeAtLocation(this.sourceFile).getSymbol().exports.includes(this.checker.getTypeAtLocation(identifier)) or this.checker.getTypeAtLocation(this.currenNamespace).getSymbol().exports.includes(this.checker.getTypeAtLocation(identifier))

This should be probably be handled in the transformer (#278);