📝 Blog: Announcing Effection 4.1

[cowboyd]

Motivation

Six months of soft-launched work since 4.0 (context APIs, experimental entry point, allSettled(), using(), faster runtime, leaner npm package) need a single announcement to land the 4.1 release.

Approach

Draft a blog post at www/blog/2026-07-09-announcing-effection-4-1/ that mirrors the shape of the 3.0 and 4.0 announcements: brief opening callback to 4.0 → feature tour bullets → per-feature sections with code examples → what's next → get started. Structured skeleton first; prose gets filled in on this branch. CodSpeed numbers pulled from the dashboard are already baked into the perf section (~5.5× on effection.recursion, ~27% on effection.events).

Draft — not ready for review yet.

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/effection@1214

commit: e5faa16

[codspeed]

Merging this PR will improve performance by 15.38%

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 1 improved benchmark
✅ 5 untouched benchmarks

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Memory	effection-inline.recursion	4.7 KB	4.1 KB	+15.38%

Tip

Curious why this is faster? Comment @codspeedbot explain why this is faster on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing release-announcement (e5faa16) with v4 (fc12ee1)}

[github-actions]

🚀 Deploy Preview Ready!

• Stable Review Link: https://pr-1214--effection.netlify.app
• Latest Commit Snapshot: https://6a6ba85417b8705b6295b0e8--effection.netlify.app