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    4f342431
    wasm: make JSVal internal Weak# point to lifted JSVal · 4f342431
    Cheng Shao authored and Marge Bot's avatar Marge Bot committed 
    JSVal has an internal Weak# with the unlifted JSVal# object as key to
arrange its builtin finalization logic. The Weak# used to designate
Unit_closure as a dummy value; now this commit designates the lifted
JSVal closure as the Weak# value. This allows the implementation of
mkWeakJSVal which can be used to observe the liveliness of a JSVal and
attach a user-specified finalizer.
    4f342431
    wasm: make JSVal internal Weak# point to lifted JSVal
    Cheng Shao authored and Marge Bot's avatar Marge Bot committed 
    JSVal has an internal Weak# with the unlifted JSVal# object as key to
arrange its builtin finalization logic. The Weak# used to designate
Unit_closure as a dummy value; now this commit designates the lifted
JSVal closure as the Weak# value. This allows the implementation of
mkWeakJSVal which can be used to observe the liveliness of a JSVal and
attach a user-specified finalizer.