proposal-resizablearraybuffer

Tech stack & purpose

This proposal extends JavaScript's `ArrayBuffer` and `SharedArrayBuffer` constructors to support in-place resizing, addressing inefficiencies in memory management and enabling better interoperability with WebAssembly memory growth and WebGPU buffer management. The proposal, authored and championed by Shu-yu Guo, introduces a `resize()` method for `ArrayBuffer` (which can grow and shrink) and a `grow()` method for `SharedArrayBuffer` (which can only grow), along with modifications to TypedArray constructors to automatically track buffer length when appropriate. The design prioritizes in-place implementation to avoid data pointer movement and includes security mitigations by keeping resizable buffers as an opt-in feature with distinct internal representations, separate from existing fixed-length buffer code paths.

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Contributors

• Shu-yu Guo92 commits
• jugglinmike19 commits
• Kevin Gibbons3 commits
• Mike Pennisi2 commits
• Jamie Mansfield2 commits
• André Bargull2 commits
• Keith Miller1 commits
• Darien Maillet Valentine1 commits
• ExE Boss1 commits
• Jordan Harband1 commits
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  Michael Ficarra1 commits · 1,133 followers