WhatA middleware/abstraction layer that lets teams write runtime-agnostic JavaScript server code, making it trivial to swap between Node, Bun, and Deno without code changes.
SignalThe post reflects growing anxiety about betting on a single JS runtime — especially one now owned by a large AI company — and the real cost of migration when that bet goes wrong.
Why NowAnthropic's acquisition of Bun has triggered concrete migration decisions, and Node 26's native TypeScript support is narrowing the gap, making runtime portability suddenly practical and urgent.
MarketEnterprise JS teams and agencies managing multiple projects; TAM overlaps with the ~$2B JS tooling/infra market; WinterCG standards exist but no commercial product enforces portable runtime code.
MoatA growing compatibility test suite and ecosystem of verified-portable packages creates a community standard that's hard to replicate.
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