Lukas Taegert-Atkinson | Reinventing Rollup | ViteConf 2023

Rust

Reinventing Rollup: Building a Faster and More Efficient Bundler for Native Code and JavaScript, with features like statement-level code splitting and native support for TypeScript.

Key takeaways

Rollup’s main issue is the conversion from JavaScript to binary, which takes time and memory.
The parser from SWC was used to replace Acorn, resulting in faster parsing and a smaller output.
The syntax tree created by SWC is non-standard and required additional work to make it compatible with Rollup.
The array buffer is smaller than the JSON representation, making it a more efficient option.
The goal is to create a more efficient bundler that can handle native code and JavaScript.
Features planned for Rollup 4 include:
- Statement-level code splitting
- Native code and JavaScript code splitting
- Better error handling
- Improved cache management
- Native support for TypeScript
- Improved tree shaking
The next step is to transition to a Rust-based implementation, which will be used for the parser, transformer, and bundler.
The goal is to make Rollup faster and more efficient, with a focus on native code and JavaScript code splitting.
The idea of paralleling code splitting and bundling to make it faster.
The use of SWC’s JavaScript bindings to create a faster syntax tree traversal API.
The goal is to make Rollup more efficient by reducing memory consumption and improving bundling speed.

Lukas Taegert-Atkinson | Reinventing Rollup | ViteConf 2023

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