Duktape’s host API is pretty much a ripoff of Lua’s, and the latter wasn’t rejected on those grounds, so… QuickJS’s API isn’t particularly well-documented, but

Duktape’s host API is pretty much a ripoff of Lua’s, and the latter wasn’t rejected on those grounds, so… QuickJS’s API isn’t particularly well-documented, but it’s not hard to find your way around it either if you dig into the source (the engine is very hackable, too; you might even fix some of the language’s design flaws – obligatory wat talk reference – if you’re so inclined). The host API follows the CPython model, with objects represented by pointers and explicit reference counting on the C side. There are some predefined macros to ease defining built-in classes. Some type-level hackery in C++ might ease things even further. I don’t know how much deader-easier you want it.