Skip to content

Chunk resources.tar into 50MB chunks for jsDelivr #4

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Oct 29, 2025
Merged

Chunk resources.tar into 50MB chunks for jsDelivr #4

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
d5edfa8
Chunk resources.tar into 50MB chunks for jsDelivr
kokjo Oct 29, 2025
db4614e
Rewrite chunks as a generator
kokjo Oct 29, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
35 changes: 26 additions & 9 deletions bin/pack-resources.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -67,9 +67,20 @@ for (const dirent of await readdir(wasmDirectory, { withFileTypes: true })) {
output += `\
});

const filesystem = async (fetch) => ({
const filesystem = async (fetch) => {
var chunks = [];
`;

function chunks(data, length) {
var rest = data;
var chunks = [];
while(rest.length != 0) {
chunks.push(rest.subarray(0, length));
rest = rest.subarray(length);
}
return chunks;
}

if (shareDirectory !== undefined) {
const tarEntries = [];
async function archivePath(pathName) {
Expand All @@ -89,19 +100,25 @@ if (shareDirectory !== undefined) {
}
await archivePath(shareDirectory);
const tarData = createTar(tarEntries);
const tarFilePath = resourceFilePath.replace(/\.js$/, '.tar');
await writeFile(tarFilePath, tarData);

const tarFileName = tarFilePath.replace(/^.+\//, '');
var i = 0;
for(const chunk of chunks(tarData, 50*1024*1024)) {
const tarFileChunkPath = resourceFilePath.replace(/\.js$/, `.${i}.tar`);
await writeFile(tarFileChunkPath, chunk);
const tarFileChunkName = tarFileChunkPath.replace(/^.+\//, '');
output += `\
chunks.push(await ${await fetchExpr(tarFileChunkPath, `./${tarFileChunkName}`)}.then((resp) => resp.arrayBuffer()));
`
i += 1;
}
output += `\
${JSON.stringify(shareRoot)}: await ${await fetchExpr(tarFilePath, `./${tarFileName}`)}
.then((resp) => resp.arrayBuffer())
.then(unpackTarFilesystem)
return {
${JSON.stringify(shareRoot)}: await new Blob(chunks).arrayBuffer().then(unpackTarFilesystem)
};
`;
}

output += `\
});
};

const totalSize = ${totalSize};

Expand Down