@effect/platform-bun@4.0.0 @effect/vitest@4.0.0
Effect-TS/effectOct 1, 2026 → Oct 1, 20260 days between releases
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The Two Releases
@effect/platform-bun@4.0.0
Oct 1, 2026· 21 days ago
This release updates the Bun platform package to Effect 4.0, adopting the new unified versioning and core runtime improvements. It includes the same WebSocket and HTTP enhancements found in the Node.js platform package.
Full release notes@effect/vitest@4.0.0
Oct 1, 2026· 21 days ago
This is the first stable release of Effect v4.0, introducing a unified versioning scheme where all Effect packages share a single version number. It features a rewritten fiber runtime for better performance, a new Schema v4 implementation, and expanded support for Deno, Bun, and browser environments.
Full release notes