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just-js ain't your average js framework. It's been heavily optimized and it also runs just on Linux.
yes. it's mostly pure javascript though - postgres library is completely written in JS as is the http framework, which uses C++ wrapper around picohttpparser for fast http parsing. admittedly both are incomplete and need a lot of work done to make them "production ready" but JS is incredibly fast on modern engines like v8 and spidermonkey *if* you are careful about how much garbage you create and spend some time benchmarking and optimising. the C++ in just-js is minimal and mostly just simple wrappers around syscalls.
yes. it's mostly pure javascript though - postgres library is completely written in JS as is the http framework, which uses C++ wrapper around picohttpparser for fast http parsing. admittedly both are incomplete and need a lot of work done to make them "production ready" but JS is incredibly fast on modern engines like v8 and spidermonkey *if* you are careful about how much garbage you create and spend some time benchmarking and optimising. the C++ in just-js is minimal and mostly just simple wrappers around syscalls.