Cloudflare Developers•14mo ago

PDF Generation (readable is not async iterable)

Any solutions found? It seems like what is returned in the PDF is not an Buffer, debugging this now more. Edit: Okay so .pdf() doesn't work but this does:

        const qoutePdf = await page.createPDFStream({
            printBackground: true,
            format: 'a4',
        });

        // Create web compatible readable stream
        const { readable, writable } = new TransformStream();

        const writer = writable.getWriter();

        qoutePdf.on('data', (chunk) => {
            writer.write(chunk);
        });

        qoutePdf.on('end', () => {
            writer.close();
        });

        return new Response(readable, {
            status: 200,
            headers: {
                'Content-Type': 'application/pdf',
            },
        });

        const qoutePdf = await page.createPDFStream({
            printBackground: true,
            format: 'a4',
        });

        // Create web compatible readable stream
        const { readable, writable } = new TransformStream();

        const writer = writable.getWriter();

        qoutePdf.on('data', (chunk) => {
            writer.write(chunk);
        });

        qoutePdf.on('end', () => {
            writer.close();
        });

        return new Response(readable, {
            status: 200,
            headers: {
                'Content-Type': 'application/pdf',
            },
        });

3 Replies

ItsWendellOP•14mo ago

Firefox•14mo ago

I didn't look into it much further after it not working but thank you so much for posting a working snippet! 🙏

ItsWendellOP•14mo ago

@vuurvos I just tweaked it to be a bit more efficient

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PDF Generation (readable is not async iterable)