Rendered Text

import puppeteer from "@cloudflare/puppeteer";import type { Page } from "@cloudflare/puppeteer";import { DEFAULT_VIEWPORT, NAVIGATION_TIMEOUT_MS } from "../constants/defaults";import { normalizeTitle, truncateText } from "./text";import type { RenderedTextResponse } from "../types/text";export async function withBrowserPage<T>(  browserBinding: Fetcher,  url: string,  fn: (page: Page) => Promise<T>): Promise<T> {  let browser: Awaited<ReturnType<typeof puppeteer.launch>> | null = null;  try {    browser = await puppeteer.launch(browserBinding);    const page = await browser.newPage();    await page.setViewport(DEFAULT_VIEWPORT);    await page.goto(url, {      waitUntil: "networkidle0",      timeout: NAVIGATION_TIMEOUT_MS,    });    return await fn(page);  } finally {    if (browser) {      try {        await browser.close();      } catch {        /* ignore close errors */      }    }  }}export async function extractRenderedText(  browserBinding: Fetcher,  url: string): Promise<RenderedTextResponse> {  const raw = await withBrowserPage(browserBinding, url, async (page) => {    const title = await page.title();    const text = await page.$eval("body", (body) => body.innerText ?? "");    return { title, text };  });  const title = normalizeTitle(raw.title);  const { text, truncated } = truncateText(raw.text);  return {    url,    title,    text,    textLength: text.length,    truncated,  };}