V8 has a doc describing their next milestone and it includes this [1]. [1] https://docs.google.com/document/d/14xWenN0lUoHa9TiDJd8yYR8ZKjgOhgO7iEmfrAuA1_M/edit#heading=h.9dwoku9340md
Bug 1774837 Comment 2 Edit History
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V8 has a doc describing their next milestone and it includes this [1]. It has a great diagram that shows the new heap type hierarchy. [1] https://docs.google.com/document/d/14xWenN0lUoHa9TiDJd8yYR8ZKjgOhgO7iEmfrAuA1_M/edit#heading=h.9dwoku9340md