[Waterluvian]

Is this pretty much a drop in replacement for babel-loader or does it lack certain features?

Edit: Kind of. It was really simple to switch over and build. But the optimizer example actually makes my output much larger than the webpack default settings. Also it can't seem to handle the "implicitly assume I have React in scope for each JSX file."

It felt maybe twice as fast, but not 10-100x to really game change my dev loop.

[geoffharcourt]

We switched two weeks ago and the drop was a bit more than half the total time we had with Webpack in development and a bit bigger drop in production builds.

Our bundle got noticeably smaller, but we chalked that up to esbuild not polyfilling for as early a target as we had been with babel-loader.