lucacasonato/deno-puppeteer

Error when saving output of `page.pdf` into variable

Opened this issue · 0 comments

TBolokhov commented

The following code which outputs page.pdf into variable

#!/usr/bin/env -S deno -q run -A --unstable
import puppeteer from "https://deno.land/x/puppeteer/mod.ts";

const browser = await puppeteer.launch()
const page = await browser.newPage();

const html = "<html></html>";
await page.goto("data:text/html," + html, {
  waitUntil: 'networkidle2'
});

const pdf = await page.pdf({
  format: 'A4',
})

await browser.close()

fails in Deno Puppeteer versions 16.2.0 and 14.1.1, but works in the version 9.0.2. The error is as follows

error: Uncaught TypeError: reader is not async iterable
  for await (const chunk of reader) {
                            ^
    at getReadableStreamAsUint8Array (https://deno.land/x/puppeteer@16.2.0/vendor/puppeteer-core/puppeteer/common/util.js:329:29)
    at Page.pdf (https://deno.land/x/puppeteer@16.2.0/vendor/puppeteer-core/puppeteer/common/Page.js:2606:24)
    at async file:///home/dir/test.ts:12:13

This error is also absent in newer versions of Puppeteer, f.e. 19.x.x.