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Bun ships v1.4.3, teases v1.5

Bun shipped v1.4.3 with 166 fixes, built-in type checking and Bun.FetchSession; the author teased three more tools in v1.5 and announced bun fmt, claimed 320x faster than Prettier across 20 languages.

6 stories · Oct 9, 04:07 to Oct 19, 13:01

  1. Oct 9, 2026

    1. Bun v1.5 and New Tools

      Jarred Sumner says Bun now covers runtime, package manager, test runner and bundler, with three more tools coming next week.

      Open Source Peaked at #3 @jarredsumner

    2. Bun releases v1.4.3

      Bun releases v1.4.3, fixing 166 issues, adding builtin TypeScript checker bun check and Bun.FetchSession, and cutting idle server CPU 67%.

      Open Source Peaked at #2 @bunjavascript

  2. Oct 10, 2026

    1. Bun experimental AOT compilation progress

      Jarred Sumner says Bun AoT is getting good: TypeScript 6 built with it typechecks Effect slightly faster than TypeScript 7 when single-threaded.

      Open Source Peaked at #1 @jarredsumner

  3. Oct 13, 2026

    1. Bun ships bun fmt after acquisition

      Bun's next version adds bun fmt, a Prettier alternative 320x faster, passing 99% of tests and supporting 20 languages.

      Open Source Peaked at #3 @bunjavascript

  4. Oct 17, 2026

    1. Pele Released: Fast Mermaid Renderer

      kepano launches Pele, a Mermaid-compatible diagram rendering library 100-500x faster and 6x smaller with no dependencies, coming to Obsidian.

      Open Source Peaked at #1 @kepano

  5. Oct 19, 2026

    1. Bun check gets speed boost

      Bun creator Jarred Sumner says bun check will be 1.7x to 7x faster in the next version.

      Open Source Peaked at #3 @jarredsumner

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