gossamer/weak_ref
Types
A JS WeakRef whose target is weakly held — the target is eligible
for GC once it has no other references.
Targets must be objects (records, lists, tuples) or non-registered
symbols (gossamer/symbol.new, not gossamer/symbol.for); new
returns an error otherwise.
deref may continue to return Ok for some time after all other
references to the target are dropped — GC timing is non-deterministic.
See WeakRef on MDN.
pub type WeakRef(target)Values
pub fn deref(of ref: WeakRef(target)) -> Result(target, Nil)Returns the target, or an error if it has been collected.
pub fn new(
target: target,
) -> Result(WeakRef(target), js_error.JsError)Returns an error if target is invalid.