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Effect 4.0 cuts bundle size 5× and raises task throughput 6.4×

effect.website 3 min read Editor score 8/10

Effect reports 5× smaller bundles, 6.4× higher concurrent task throughput and 86% less memory per fiber after rebuilding the library. The measured changes and zero-runtime-dependency design make this a substantial release for teams using its TypeScript ecosystem.

What

Effect 4.0 reports bundles 5× smaller, concurrent task throughput 6.4× higher, and 86% less memory per fiber than Effect 3.

How

Previously separate packages now live in Effect, whose core has zero runtime dependencies; packages share a version and release in lockstep.

Why it matters

A shared programming model now extends from functions to durable workflows and clustering, with long-term support commitments for major versions.

Read on effect.website → Hacker News · 40 comments

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