In the first paragraph:

> graphql-jit leverages this behaviour of V8 optimization by compiling the queries into functions to significantly improve performance

and https://github.com/zalando-incubator/graphql-jit#compile-a-q...

so I guess the difference is instead of having totally generic functions that parse the query every time, instead you can call a factory function up front to get a specialised function for a particular query

and V8 JIT can make that faster

Hello. We have a talk from GraphQL conf 2019 on the workings of JIT which should be helpful to understand this: https://www.youtube.com/watch?v=kdMyfO9IlLA&t=1s

It uses `new Function(string_of_js_code)`