Benchmarks

These benchmarks are used to evaluate the performance of SWC on every commit, as well as against other libraries like Babel or esbuild. You can view the benchmark source code here (opens in a new tab).

Transformations (Parallel)

This is the most important benchmark, since build tool authors will run tasks concurrently. Note the performance of Babel and tsx is indentical for parallel and synchronous benchmarks.

You can view the benchmark source code here (opens in a new tab).

es3

es5

es2015

es2016

es2017

es2018

es2019

es2020

Transformations (Synchronous)

Not as critical as the parallel benchmark.

es3

es5

es2015

es2016

es2017

es2018

es2019

es2020

Transformations (Asynchronous)

This benchmark suite does not use all CPU cores. For SWC, the benchmark stores only one task on the Node.js thread pool at a time.

es3

es5

es2015

es2016

es2017

es2018

es2019

es2020