If not defined, etc., it will not be recognized.

[Zel9278]

main.js

var some = {};
module.exports = some;

a

errorCheck.js

var file = require("path").join("main.js");
var src = require("fs").readFileSync(file);
var ec = check(src, file);

if(ec) return { ... };
require("./main.js");
...

uncaughtException - a is not defined