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fix: document body undefined #518

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merged 7 commits into from
Feb 22, 2024
Merged

fix: document body undefined #518

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27e96d0
init
Aslemammad Feb 21, 2024
fdc1340
format
Aslemammad Feb 21, 2024
6daaafb
format
Aslemammad Feb 21, 2024
c1bfdfc
Update packages/waku/src/lib/renderers/html-renderer.ts
dai-shi Feb 21, 2024
84f4d41
Update packages/waku/src/lib/renderers/html-renderer.ts
dai-shi Feb 21, 2024
43d698d
Update packages/waku/src/lib/renderers/html-renderer.ts
dai-shi Feb 21, 2024
3f5e88d
Merge branch 'main' into fix/document-body-undefined
dai-shi Feb 21, 2024
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3 changes: 1 addition & 2 deletions packages/waku/src/lib/handlers/handler-dev.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -182,8 +182,7 @@ export function createHandler<
config,
pathname: req.url.pathname,
searchParams: req.url.searchParams,
htmlHead: `${config.htmlHead}
<script src="${config.basePath}${config.srcDir}/${config.mainJs}" async type="module"></script>`,
htmlHead: config.htmlHead,
renderRscForHtml: async (input, searchParams) => {
const [readable, nextCtx] = await renderRscWithWorker({
input,
Expand Down
6 changes: 3 additions & 3 deletions packages/waku/src/lib/plugins/vite-plugin-rsc-index.ts
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Expand Up @@ -15,9 +15,9 @@ export function rscIndexPlugin(config: {
<html>
<head>
${config.htmlHead}
<script src="${config.basePath}${config.srcDir}/${config.mainJs}" async type="module"></script>
</head>
<body>
<script src="${config.basePath}${config.srcDir}/${config.mainJs}" async type="module"></script>
</body>
</html>
`;
Expand All @@ -26,9 +26,9 @@ ${config.htmlHead}
configureServer(server) {
return () => {
server.middlewares.use((req, res) => {
res.statusCode = 200;
res.setHeader('content-type', 'text/html; charset=utf-8');
server.transformIndexHtml(req.url || '', html).then((content) => {
res.statusCode = 200;
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This is not related to the PR, but it's a minor change, since we used to set the status 200 even though the .then might never work and the promise might reject.

So we just bring it when we're sure the promise is getting resolved.

res.setHeader('content-type', 'text/html; charset=utf-8');
res.end(content);
});
});
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13 changes: 13 additions & 0 deletions packages/waku/src/lib/renderers/html-renderer.ts
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Expand Up @@ -44,6 +44,7 @@ Promise.resolve(new Response(new ReadableStream({

const injectRscPayload = (
readable: ReadableStream,
mainJsPath: string,
urlForFakeFetch: string,
) => {
const chunks: Uint8Array[] = [];
Expand Down Expand Up @@ -93,6 +94,7 @@ globalThis.__WAKU_PREFETCHED__ = {
const encoder = new TextEncoder();
const decoder = new TextDecoder();
let headSent = false;
let mainJsSent = false;
let data = '';
let scriptsClosed = false;
const sendScripts = (
Expand All @@ -102,6 +104,16 @@ globalThis.__WAKU_PREFETCHED__ = {
if (scriptsClosed) {
return;
}
if (!mainJsSent) {
// enqueue `mainJs` first in the body to avoid the document.body undefined error, before we used to inject it in the head which sometimes made it load before the document.body was loaded
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My oversight, this should be DEV only, right?

npm run examples:prd:04_promise

image

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This should in general send the mainJs one time, weird error, do you know why that happens?

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Here's the fix #528

main.tsx doesn't exist on PRD, right?

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Yes, what exists then if that does not exist? because as far as I checked the website, there was an alternative. And we need that to be in the body too, so the behaviour is normalized between two environments.

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it's bundled by vite.

it sounds like you just miss a point. do you understand why we get 404?

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But the error that this PR fixed was reproduced with async too, so I don't think that can always be true and we need to be sure about that.

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My understanding is that the issue this PR fixed is for HMR in dev mode. I never see such an issue in PRD.

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Yes it fixed the HMR issue after the refresh in DEV, but I was just concerned how it'd be handled in PRD. That's it. sorry for the confusion.

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So, my question for you is how Vite+React does it. My guess is that all scripts are in <head>.

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Yep, they're in the head! because the body is always sent in the initial template (index.html)

controller.enqueue(
encoder.encode(
`<script src="${mainJsPath}" async type="module"></script>`,
),
);
mainJsSent = true;
}

const scripts = chunks.splice(0).map(
(chunk) =>
`
Expand Down Expand Up @@ -337,6 +349,7 @@ export const renderHtml = async (
);
const [copied, interleave] = injectRscPayload(
stream,
`${config.basePath}${config.srcDir}/${config.mainJs}`,
config.basePath + config.rscPath + '/' + encodeInput(ssrConfig.input),
);
const elements: Promise<Record<string, ReactNode>> = createFromReadableStream(
Expand Down
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