Bun v1.3 is our biggest release yet
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We reduced idle CPU usage by 100x and lowered idle memory usage by 40% compared to Bun v1.2
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+800 more tests from the Node.js test suite run on every commit of Bun. if it works in Node.js and doesn't work in Bun, then please file an issue in Bun's github repository. It's our job to make sure everything that works in Node also works in Bun.

Oct 11, 2025 · 4:21 PM UTC

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`bun install` now automatically migrates lockfiles from pnpm, yarn v1, and npm - while keeping your resolved dependency versions intact. This lets you try `bun install` in existing projects with zero extra configuration
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Isolated installs eliminate phantom dependencies in monorepos, and for workspaces it's now the default installation method for `bun install` (instead of "hoisted") To configure this in bunfig.toml: ``` [install] linker = "isolated" # linker = "hoisted" ```
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In large monorepos with many workspace packages, isolated installs with `bun install` run 70x faster than npm
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Sort replies: Relevant Recent Liked
Replying to @bunjavascript
Wasn’t there a proposal to track percentage of test coverage compatibility on the website for all modules? I know it keeps getting better and it is tracked in some, but this is measurable and notably absent on many described as “fully implemented”.
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