I frequently pass values of typeImmutable<T> to functions that expect parameters of typeT, and this usually works without any typing errors. However, yesterday I encountered a case where this didn't work (see code below).

As a workaround, I avoid the issue by passing problematic types together withPrimitive | AtomicObject types to prevent theImmutable type from being applied to them in theImmutable type definition.

1. What is the intended type relationship betweenImmutable<T> andT?
2. Are they designed to be type-compatible, have I been observing some edge case or bug?
3. Are there any better solutions to this problem?

// Expecting to pass `Immutable<HTMLElement>` as wellconstf=(element:HTMLElement)=>{};constel:Immutable<HTMLElement>=document.body;// TypeScript error:// The type 'readonly ImmutableObject<CSSStyleSheet>[]' is 'readonly' and cannot be assigned to the mutable type 'CSSStyleSheet[]'.f(el);