I have a code question. On line 24 in this file an object is sealed, but it has a type assigned. What does sealing this object change? Is there a concern that

I have a code question. On line 24 in this file an object is sealed, but it has a type assigned. What does sealing this object change? Is there a concern that other running code will try to assign or delete properties on this object? https://github.com/eavichay/microfronts/blob/master/src/router.ts https://github.com/eavichay/microfronts/blob/master/src/rout...