JavaScript Quiz - Level 7

1. Purpose of ShadowRealm API?

Isolated env for untrusted code

Shadow DOM elements

Cache computations

Run in OS threads

Share ArrayBuffer/SharedArrayBuffer

Copy memory each call

Isolated memory space

Read-only access

Hidden shape → fast access

Encrypts props

Caches objects

Moves to faster memory

Prevent optimizations

Double memory

Block async funcs

Only in Node.js

Built-ins + global

Func scope

JS thread

Module namespace

%GetOptimizationStatus / %Optimize...

CPU profile (DevTools)

Execution speed

--trace-opt logs

Cleanup after GC

Delete before GC

Force GC

Limit scope

Freeze/isolate intrinsics

Cache modules

Encrypt vars

Run in OS threads

Refs to funcs (indirect)

Raw memory

Call stack

Heap objects