trident/os/browser.md

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Browser — Operating System

← OS Reference | VM: WASM

Runtime Parameters

Parameter Value
VM WASM
Runtime binding browser.ext.*
Process model Single-threaded event loop (+ Web Workers)
Storage model IndexedDB, localStorage
Cost model Wall-clock time, frame budget
Interop JavaScript, Web APIs

Runtime Binding (browser.ext.*)

  • DOM — element creation, query, mutation (planned)
  • Fetch — HTTP requests (planned)
  • Storage — IndexedDB, localStorage (planned)
  • Canvas/WebGL — 2D/3D rendering (planned)

Notes

Browser targets web applications via WASM. The compiler produces .wasm modules that load in any modern browser. Runtime bindings expose Web APIs through the browser.ext.* module.

The same .wasm bytecode runs in browsers and WASI runtimes — only the host function imports differ. Browser provides DOM, fetch, and Web APIs instead of filesystem and clock capabilities.

For WASM VM details (instruction set, lowering path, bytecode format), see wasm.md.

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