Skip printing async if await is not used

withastro / compiler

The Astro compiler. Written in Go. Distributed as WASM.

Other

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Changes

Idea by @natemoo-re. Currently we always print the component function with async even if no top-level await is used:

const $$stdin = $$createComponent(async ($$result, $$props, $$slots) => {

We can skip printing the async if no await is used so that rendering the component won't always require one tick.

Performance:

This should improve page rendering. With the Astro docs repo, it fluctuates between 35-42s a lot, so it's hard to make a concrete comparison. But compared to the old timings, the average timing dropped about 1-2s.

Testing

Updated test

Docs

n/a. internal improvement.

withastro / compiler