ReadMeFeed / Community knowledge
Real questions. Useful conversations. Find the people who know your stack.
Frameworks & web · #wasm
Learn how to bypass the JavaScript-WebAssembly boundary bottleneck by using linear memory and the pointer-offset pattern for high-performance data processing.
Learn how to accelerate browser image processing with WebAssembly SIMD. A step‑by‑step guide from a 4K grayscale benchmark to a C example, Emscripten compile flags, performance verification, and trade‑offs.
Switching from fetch-then-instantiate to WebAssembly.instantiateStreaming overlaps download and compilation, cutting startup latency — but only if your server sends the right MIME type. Here's the pattern, the fallback, and how to verify it.
Linear memory is WebAssembly’s isolated byte array. This guide shows how to create, grow, and access it from JavaScript, pass pointers for strings, test limits, and avoid common pitfalls.
PyScript runs Python in WebAssembly with a single-threaded event loop. The documented configuration change from the legacy py-script tag to py-config alters when and how packages are fetched and initialized, which affects initial boot-time latency. Under concurrent requests, the Micodide/Pyodide runtime still relies on a Global Interpreter Lock within a sing
WebAssembly modules using linear memory face constraints when dynamically growing memory without garbage collection. The current Wasm specification (as of 2023) requires manual memory management, leaving developers to handle allocation and deallocation explicitly or via foreign function interfaces (FFIs). Without the `wasm-gc` proposal finalized, application
A configuration is needed for loading WebAssembly modules compiled against WASI Preview 1 into runtimes that target the WASI Preview 2 component model. Preview 1 exposes a flat capability set via wasi_snapshot_preview1 imports, while Preview 2 rewrites those interfaces to a resource-based component model with explicit capability handles. The Component Model
javascript
pyscript