Answer to first is no, answer to second is wait basically

import { acquire, connect } from '@cloudflare/playwright';

export default {
  async fetch(request: Request, env: Env) {
    // ensures session is acquired and kept alive for 20 seconds
    const { sessionId } = await acquire(env.MYBROWSER, { keep_alive: 20_000 });
    const browser = await connect(env.MYBROWSER, sessionId);

    // use the browser normally

    // it closes this browser instance but keeps the session alive
    await browser.close();

    // another browser instance can connect to the same session
    const otherBrowser = await connect(env.MYBROWSER, sessionId);

    // use the other browser instance with the same session

    await otherBrowser.close();

    // session is automatically closed after 20 seconds of inactivity
  },
};

import { acquire, connect } from '@cloudflare/playwright';

export default {
  async fetch(request: Request, env: Env) {
    // ensures session is acquired and kept alive for 20 seconds
    const { sessionId } = await acquire(env.MYBROWSER, { keep_alive: 20_000 });
    const browser = await connect(env.MYBROWSER, sessionId);

    // use the browser normally

    // it closes this browser instance but keeps the session alive
    await browser.close();

    // another browser instance can connect to the same session
    const otherBrowser = await connect(env.MYBROWSER, sessionId);

    // use the other browser instance with the same session

    await otherBrowser.close();

    // session is automatically closed after 20 seconds of inactivity
  },
};

// @ts-ignore
import createFFmpegCore from '@ffmpeg/core';
// @ts-ignore
import wasm from '../node_modules/@ffmpeg/core/dist/esm/ffmpeg-core.wasm';
import type { FFmpegCoreModule } from '@ffmpeg/types';

// for some reason, ffmpeg-core tries to access location.href...
(globalThis as any).location = { href: 'https://example.com' };
const mod = {
  instantiateWasm: async (info: any, receiveInstance: any) => {
    const instance = await WebAssembly.instantiate(wasm, info);
    receiveInstance(instance);
  }
};
const ffmpeg = await createFFmpegCore(mod) as FFmpegCoreModule;

export default {
  async fetch(request: Request, env: Env, ctx: ExecutionContext): Promise<Response> {
    const videoFile = new URL(request.url).searchParams.get('video')
      ?? 'https://raw.githubusercontent.com/ffmpegwasm/testdata/master/Big_Buck_Bunny_180_10s.webm';

    const input = await fetch(videoFile);
    ffmpeg.FS.writeFile('input.mp4', await input.bytes());
    ffmpeg.exec('-i', 'input.mp4', '-vf', 'format=gray', 'output.mp4');

    const output = ffmpeg.FS.readFile('output.mp4', { encoding: 'binary' });

    ffmpeg.FS.unlink('input.mp4');
    ffmpeg.FS.unlink('output.mp4');

    return new Response(output, {
      headers: {
        'Content-Type': 'video/mp4',
      },
    });
  },
};

// @ts-ignore
import createFFmpegCore from '@ffmpeg/core';
// @ts-ignore
import wasm from '../node_modules/@ffmpeg/core/dist/esm/ffmpeg-core.wasm';
import type { FFmpegCoreModule } from '@ffmpeg/types';

// for some reason, ffmpeg-core tries to access location.href...
(globalThis as any).location = { href: 'https://example.com' };
const mod = {
  instantiateWasm: async (info: any, receiveInstance: any) => {
    const instance = await WebAssembly.instantiate(wasm, info);
    receiveInstance(instance);
  }
};
const ffmpeg = await createFFmpegCore(mod) as FFmpegCoreModule;

export default {
  async fetch(request: Request, env: Env, ctx: ExecutionContext): Promise<Response> {
    const videoFile = new URL(request.url).searchParams.get('video')
      ?? 'https://raw.githubusercontent.com/ffmpegwasm/testdata/master/Big_Buck_Bunny_180_10s.webm';

    const input = await fetch(videoFile);
    ffmpeg.FS.writeFile('input.mp4', await input.bytes());
    ffmpeg.exec('-i', 'input.mp4', '-vf', 'format=gray', 'output.mp4');

    const output = ffmpeg.FS.readFile('output.mp4', { encoding: 'binary' });

    ffmpeg.FS.unlink('input.mp4');
    ffmpeg.FS.unlink('output.mp4');

    return new Response(output, {
      headers: {
        'Content-Type': 'video/mp4',
      },
    });
  },
};

Total Upload: 31672.57 KiB / gzip: 10087.55 KiB
Worker Startup Time: 45 ms
No bindings found.
Uploaded ffmpeg-example (10.47 sec)
Deployed ffmpeg-example triggers (2.74 sec)

Total Upload: 31672.57 KiB / gzip: 10087.55 KiB
Worker Startup Time: 45 ms
No bindings found.
Uploaded ffmpeg-example (10.47 sec)
Deployed ffmpeg-example triggers (2.74 sec)

⛅️ wrangler 4.16.1
-------------------

Total Upload: 31652.23 KiB / gzip: 10083.07 KiB
No bindings found.
▲ [WARNING] Here are the 3 largest dependencies included in your script:

  - node_modules/@ffmpeg/core/dist/esm/ffmpeg-core.wasm - 31476.97 KiB
  - node_modules/@ffmpeg/core/dist/esm/ffmpeg-core.js - 173.98 KiB
  - src/index.ts - 1.01 KiB
  If these are unnecessary, consider removing them



✘ [ERROR] A request to the Cloudflare API (/accounts/.../workers/scripts/workers-test/versions) failed.

  Your Worker exceeded the size limit of 3 MiB. Please upgrade to a paid plan to
  deploy Workers up to 10 MiB.
  https://dash.cloudflare.com/.../workers/plans
  [code: 10027]
  To learn more about this error, visit:
  https://developers.cloudflare.com/workers/platform/limits/#worker-size

  
  If you think this is a bug, please open an issue at:
  https://github.com/cloudflare/workers-sdk/issues/new/choose

⛅️ wrangler 4.16.1
-------------------

Total Upload: 31652.23 KiB / gzip: 10083.07 KiB
No bindings found.
▲ [WARNING] Here are the 3 largest dependencies included in your script:

  - node_modules/@ffmpeg/core/dist/esm/ffmpeg-core.wasm - 31476.97 KiB
  - node_modules/@ffmpeg/core/dist/esm/ffmpeg-core.js - 173.98 KiB
  - src/index.ts - 1.01 KiB
  If these are unnecessary, consider removing them



✘ [ERROR] A request to the Cloudflare API (/accounts/.../workers/scripts/workers-test/versions) failed.

  Your Worker exceeded the size limit of 3 MiB. Please upgrade to a paid plan to
  deploy Workers up to 10 MiB.
  https://dash.cloudflare.com/.../workers/plans
  [code: 10027]
  To learn more about this error, visit:
  https://developers.cloudflare.com/workers/platform/limits/#worker-size

  
  If you think this is a bug, please open an issue at:
  https://github.com/cloudflare/workers-sdk/issues/new/choose

export default {
  fetch: async (
    request: Request,
    env: { JWT_SECRET: string }
  ): Promise<Response> => {
    const token = request.headers.get("authorization");

    if (!token) {
      return new Response("unauthorized", { status: 401 });
    }

    try {
      await validateJWT(token, env.JWT_SECRET);

      return new Response(null, {
        status: 404 // meant as success for cloudflare to serve assets
      });
    } catch {
      return new Response("forbidden", { status: 403 });
    }
  }
};

export default {
  fetch: async (
    request: Request,
    env: { JWT_SECRET: string }
  ): Promise<Response> => {
    const token = request.headers.get("authorization");

    if (!token) {
      return new Response("unauthorized", { status: 401 });
    }

    try {
      await validateJWT(token, env.JWT_SECRET);

      return new Response(null, {
        status: 404 // meant as success for cloudflare to serve assets
      });
    } catch {
      return new Response("forbidden", { status: 403 });
    }
  }
};