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Notes from a 2 AM On-Call: Why Harper's WASM Module Silently Failed in Our Self-Hosted VSCode Server

This story is from 2026-10-19. It is preserved in the archive; the latest stories are on the live feed.

Notes from a 2 AM On-Call: Why Harper's WASM Module Silently Failed in Our Self-Hosted VSCode Server The Failure Symptom [Extension Host] Error loading webview: Failed to execute 'postMessage' on 'Worker' [Harper] WASM module instantiation failed: CompileError Browser console: Refused to create a w…

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  1. 2026-10-19 09:33 · DEV Community — AI
    Notes from a 2 AM On-Call: Why Harper's WASM Module Silently Failed in Our Self-Hosted VSCode Server

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