Simon Willison’s Weblog

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Sunday, 22nd March 2026

Tool Merge State Visualizer — # CRDT Merge State Visualizer
Research JavaScript Sandboxing Research — Analyzing current JavaScript sandboxing options for running untrusted code, this research compares core approaches in Node.js (including worker_threads, node:vm, and the Permission Model), prominent npm packages (isolated-vm, vm2), and alternative engines like quickjs-emscripten.
Saturday, 21st March 2026

2026 » March

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