Runtime Compatibility Matrix

import { PPTXTemplater } from 'node-pptx-templater';
import { S3Client, GetObjectCommand, PutObjectCommand } from '@aws-sdk/client-s3';

const s3 = new S3Client({ region: 'us-east-1' });

export const handler = async (event) => {
  // 1. Fetch template buffer from S3 bucket
  const s3Res = await s3.send(new GetObjectCommand({
    Bucket: 'company-templates',
    Key: 'executive-summary.pptx'
  }));
  const templateBuffer = Buffer.from(await s3Res.Body.transformToByteArray());

  // 2. Load into memory (zero /tmp disk I/O)
  const ppt = await PPTXTemplater.load(templateBuffer);
  ppt.useSlide(1).replaceText(event.replacements);

  // 3. Export directly as Node.js Buffer
  const outputBuffer = await ppt.toBuffer();

  // 4. Save generated deck to output bucket
  await s3.send(new PutObjectCommand({
    Bucket: 'company-reports',
    Key: `reports/${event.reportId}.pptx`,
    Body: outputBuffer,
    ContentType: 'application/vnd.openxmlformats-officedocument.presentationml.presentation'
  }));

  return { statusCode: 200, body: JSON.stringify({ success: true }) };
};

import { PPTXTemplater } from 'node-pptx-templater';

export default {
  async fetch(request, env) {
    // 1. Fetch template from CDN or R2 bucket
    const res = await fetch('https://cdn.example.com/templates/invoice.pptx');
    const arrayBuffer = await res.arrayBuffer();

    // 2. Load in V8 isolate memory (no Node.js fs required)
    const ppt = await PPTXTemplater.load(arrayBuffer);
    ppt.useSlide(1).replaceText({ '{{CLIENT}}': 'Acme Global Corp' });

    // 3. Export ArrayBuffer directly to HTTP stream response
    const outputArrayBuffer = await ppt.toArrayBuffer();

    return new Response(outputArrayBuffer, {
      headers: {
        'Content-Type': 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
        'Content-Disposition': 'attachment; filename="Invoice.pptx"'
      }
    });
  }
};