WebAssembly - The Next Big Platform

Sven Sauleau

2019

1

Sven Sauleau @svensauleau

@svensauleau 2

JavaScript, what happened?

Loading time

1. Fetching.

2. Parsing source.

3. Compiling + optimizing∞−→ reoptimizing.

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Performance

Dynamic and untyped.

Complex runtime.

Managed memory.

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Became acompilation target

F# Scala Haskell OCaml . . .

JavaScript

The Web

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WebAssembly,at the rescue?

Sources

C/C++ Rust Golang Haskell . . .

Compilers

Emscripten rustc GoGHC

Asterius

LLVM

Binaryen

WebAssembly Module

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WebAssembly Module

Runtimes

Web browsers

(Firefox, Chrome, Safari, ...)

Other environments

(WASI, WAVM, crypto...)

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What’s evenWebAssembly?

WebAssembly is a

portable,

low-level,

safe

format.

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Inside the black box

...

y from x

import section

func #2

export section

WebAssembly Module

JS JS

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Unpopular Opinions: WebAssembly edition.

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No.

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WebAssembly all thethings?

Probably not.

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WebAssembly is designed to be a

complement to, not replacement of,

JavaScript.

@svensauleau 20

demo!

Rust andWebAssembly

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@svensauleau 24

demo!

Thanks!