Let’s build a JavaScript Engine in Rust by Jason Williams | JSConf EU 2019

Have you wondered how JS engines work? This past year I built an engine from scratch in Rust. It was fun, weird, exciting and sometimes exhausting. I will share my experience as well as what it is like to work on the specification, collaborate with TC39, and lessons from engines in use today.

[ZapOKill]

if your name is json you have to write a js engine

[Yetipfote]

Q: So what do you do for a living?
A: coding
Q: So what do you after work?
A: coding

[Mephistel]

Finally, a way to run JS in the browser! /s


Seriously though, this was really amazing to see, I'm learning Rust now and the possibilities like this fuel me.

[qcpresto]

This was a very good presentation; very good display of Rust's capabilities!

[LNTutorialsNL]

I would love to have a runtime/engine that runs Typescript natively

[thekwoka]

Functions declared in the outside scope with the function keyword are generally parsed/compiled immediately, not only once they are run.

[Tunec_s_hlebom]

Bro, are you amazing) I have making js runtime, but on c++) I was started it just like hobby. Rust is exotic thing for me)

[alekseysoldatenkov]

I hope Rust takes over the world (no pun intended) so that memory management and the vulnerabilities that often result from it, are a thing of the past.

[impssngr]

That's so exciting! Thanks for this talk!

[RY-gjyb]

When you started the talk I started thinking about that final demo. And you made it. Is it an updatable JS engine? Future is beautiful.

[qazyhn]

super interesting presentation, thank you!

[philippejean]

aw Super coool, great presentation !!

[lagimmediafiles]

I love JS and Python 3! And im a IT Professional....

Software Engineer Soon!

[thekwoka]

What would be the difference in using the Gc that you have vs just a Rc from std? Is there a real benefit?

[sagojez]

What is the name of the theme of his vscode dough. Is beautiful hahaha

[Viviko]

I’m that one weirdo that actually wonders how this stuff is built. I may build my own engine actually. But, I’ll make it run on TypeScript instead. Maybe I can make it so we can run TypeScript on the browser without transpiring to JS. Lol. Idk. All I know is I wanna build my own engine and/or my own language.

[bobweiram]

So if you're a rust programmer, you can no longer get away with saying you're rusty.

[artahir]

can anybody confirm ?
he just translated that js code into rust code ?
thats it ?

[googlr]

why stop there, thinking of building an interpreter(engine) for python, scala, f#, sql

[ZachBradyisBrachZady]

can't find this guy on twitter what the heck