- portable binary format, with file extension .wasm
- text format, with file extension .wat
For most cases .wat is still quite low level, and there is option to use an "AssemblyScript",
an extended strongly typed subset of TypeScript, and compile that to .wasm directly.
The file extension of AssemblyScript is still .ts, same as TypeScript, and that may confuse IDEs.
The file extension of AssemblyScript is still .ts, same as TypeScript, and that may confuse IDEs.
Converting WebAssembly text format to wasm - WebAssembly | MDN
Introduction - The AssemblyScript Book
assemblyscript/examples at master · AssemblyScript/assemblyscript @GitHub
The simplest way to get started with WebAssembly - Benedek Gagyi - Medium
.WASM is also a compile target for many languages now.
- Rust is quite popular choice since it produces safe, compact and efficient .wasm code, and has good tools for WebAssembly toolchain.
- GoLang compiler provides .wasm compilation target also, while files are larger singe it includes runtime with its own GC
- C-based languages that are using LLVM (C, C++, Swift) have compilation target for .wasm
- .NET Core (C#) can be compiled to .wasm, by leveraging Mono compiler that is C/LLVM based. The runtime is included and relatively large, while tools are quite good. "Blazor" is leveraging ASP.NET C# templates for web apps.
Useful code examples:
JeremyLikness/wasm-trees: An example of memory management/passing buffers between WebAssembly and JavaScript
JeremyLikness/PlasmaWasmGo: Implementation of Plasma effect in WebAssembly using Go
JeremyLikness/PlasmaWasmRust: Implementation of plasma effect using WebAssembly compiled from Rust.
JeremyLikness/blazor-wasm: Blazor and WebAssembly examples (part of a Blazor presentation)
Presentations and tutorials:
WebAssembly: Your Browser is the new OS - Jeremy Likness - YouTube
THAT Conference '19: WebAssembly: The Swiss Army Knife of Browser Apps | Pluralsight
WebAssembly for Web Developers (Google I/O ’19) - YouTube
Lin Clark: A Cartoon Intro to WebAssembly | JSConf EU 2017 - YouTube
Tools:
WebAssembly/binaryen: Compiler infrastructure and toolchain library for WebAssembly
Compiler infrastructure and toolchain library for WebAssembly
Binaryen has a simple C API in a single header, and can also be used from JavaScript. It accepts input in WebAssembly-like form but also accepts a general control flow graph for compilers that prefer that.
