Playwright Cdp Bridge

import { chromium, type Browser } from "playwright";
import { execFileSync } from "node:child_process";

function createSession() {
  // `browse` is on PATH after `npm install -g browse`. The CLI returns a
  // JSON envelope with `id` + `connectUrl`. The flags below match what
  // autobrowse uses for stealth; drop --verified or --proxies for
  // low-anti-bot sites.
  const stdout = execFileSync("browse", [
    "cloud", "sessions", "create",
    "--keep-alive", "--verified", "--proxies",
  ]).toString();
  return JSON.parse(stdout) as { id: string; connectUrl: string };
}

async function connect(connectUrl: string) {
  const browser = await chromium.connectOverCDP(connectUrl);
  const [context] = browser.contexts();
  const page = context.pages()[0] ?? await context.newPage();
  return { browser, page };
}

function releaseSession(sessionId: string) {
  // Fire-and-forget; the CLI handles network errors gracefully.
  execFileSync("browse", [
    "cloud", "sessions", "update", sessionId,
    "--status", "REQUEST_RELEASE",
  ]);
}

// Skeleton for main():
//   const session = createSession();
//   try {
//     const { page } = await connect(session.connectUrl);
//     // … do the work on page …
//   } finally {
//     // Do NOT call browser.close() — connectOverCDP tears down the remote
//     // session prematurely. Release via the CLI instead:
//     releaseSession(session.id);
//   }

import type { Page } from "playwright";

async function fillField(page: Page, selector: string, value: string) {
  const locator = page.locator(selector);
  await locator.click();
  await locator.evaluate((el: HTMLInputElement, v: string) => {
    const setter = Object.getOwnPropertyDescriptor(
      Object.getPrototypeOf(el), "value",
    )?.set;
    setter?.call(el, v);
    el.dispatchEvent(new Event("input", { bubbles: true }));
    el.dispatchEvent(new Event("change", { bubbles: true }));
  }, value);
}

import type { Page } from "playwright";
import { join } from "node:path";

async function snap(page: Page, label: string) {
  const dir = process.env.SCREENSHOT_DIR;
  if (!dir) return; // local-run no-op, so engineers don't trip on missing dirs
  await page.screenshot({
    path: join(dir, `${label}.png`),
    fullPage: false,
  });
}

import { z } from "zod";

const OutputSchema = z.object({
  // … task-specific fields …
});

// At end of main(), after successful extraction:
const output = OutputSchema.parse({ /* extracted data */ });
console.log(JSON.stringify({ success: true, data: output }));