Advanced concepts in TypeScript & Web APIs, page 2
Web Push API: Engage Users When Your App is Closed
The Web Push API lets servers send messages to users even when your site is closed. A service worker receives these pushes, making it ideal for notifications. The main footgun: the subscription endpoint is a secret key that must be protected.
Web Audio API: A Modular Synth for Your Browser
The Web Audio API treats sound as a modular graph. You connect sources (files, oscillators) to effects (filters) and a destination (speakers) for precise, low-latency control. It's ideal for games and music apps.
WebGL Textures: From Image File to GPU Pixels
WebGL textures are images uploaded to the GPU for fast access when "painting" 3D models. They're used to apply detailed surfaces like brick patterns. The footgun: images must be CORS-approved, and non-power-of-two dimensions break mipmapping in WebGL1.
RTCPeerConnection: Direct Browser-to-Browser Links
Think of an RTCPeerConnection as a direct phone line between two browsers. It's the core of WebRTC, enabling peer-to-peer video and data streams. The footgun: it doesn't find peers; you must use a separate signaling server to broker the initial handshake.
Media Source Extensions: The Engine for Web Streaming
MSE lets you build streaming video players in JavaScript by feeding media chunks to a <video> element, instead of a single file URL. It's the foundation for adaptive streaming like DASH/HLS.
Speed Up Builds with TypeScript Project References
Treat your codebase like a set of independent packages. Project References let you split a large project into smaller, interconnected pieces, dramatically speeding up builds by only recompiling what's changed.
TypeScript Namespaces: The Original Module System
TypeScript namespaces bundle related code under a single global name, preventing name collisions. They are useful for older projects or UMD library types, but the footgun is using them in modern apps; prefer standard ES modules.
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