Trying to assign a value to object in javascript / typescript,

let boardMc = ss.getLibrary();

having data in ss object assigned a value into boardMC

Now from boardMC has some values and assigning to board object

let board = new boardMc.board();

above line takes long time to load, because of this other UI components freeze.

Can we assign this asynchronously, so that other UI component will not freeze.