Memory leak resulting in net::ERR_OUT_OF_MEMORY

[michal-lipski]

The problem

The loader is calling URL.createObjectURL to create URL representing the worker javascript bundle file. The object is never released, and garbage collector can't remove it from memory.
At some point it is not possible to create another object and error is thrown: net::ERR_OUT_OF_MEMORY which means the buffer of the network interface is full.

I am getting this on all browsers.

Proposed solution

According to documentation, we can call revokeObjectURL() to release an object URL.

const objectUrl = URL.createObjectURL(blob);  
const worker = new Worker(objectUrl);  
URL.revokeObjectURL(objectUrl);  
return worker;  

[alexander-akait]

PR welcome