Specifically I don’t know, though I do know what currying is. This auto-currying thing sounds like a reaction against some parts of JavaScript where you can ge

Specifically I don’t know, though I do know what currying is. This auto-currying thing sounds like a reaction against some parts of JavaScript where you can get burned by default arguments. A curried function is like a partial application for each argument. If mul:=(a,b)=>a*b then currying would be being able to say double:=mul(2). Currying everything and requiring all function calls to have one parameter per call — six:=mul(2)(3) — might have some benefit in avoiding bugs. Generally speaking though my hunch is that the lodash author grew tired of the project’s focus on meta programming: noodling around with JavaScript using programming paradigms that hinder rather than help its users. Dropping the noodling and focusing on features is a “back to basics” moment, if you will.