Issue attaching to puppeteer. Emitter undefined.
Author: vegetablesaladCreated Mar 3, 2025Updated Mar 3, 2025
Using just the default example:
import { Polly } from '@pollyjs/core';
import PuppeteerAdapter from '@pollyjs/adapter-puppeteer';
import FSPersister from '@pollyjs/persister-fs';
import puppeteer from 'puppeteer';
Polly.register(PuppeteerAdapter);
Polly.register(FSPersister);
(async function main() {
const browser = await puppeteer.launch({
headless:false
});
const page = await browser.newPage();
if(page){
const polly = new Polly('My E2E Session', {
adapters: ['puppeteer'],
persister: 'fs',
adapterOptions: {
puppeteer: {
page /* <--- crucial: pass the Puppeteer page here */
}
}
});
}
// Now polly can properly hook into Puppeteer’s network
// ...
})();
Error message:
/REDACTED-monorepo/node_modules/@pollyjs/adapter-puppeteer/src/index.js:220
const all = this.emitter.all;
^
TypeError: Cannot read properties of undefined (reading 'all')
at CdpPage.apply (/Users/usr/projects/REDACTED/REDACTED/REDACTED-monorepo/node_modules/@pollyjs/adapter-puppeteer/src/index.js:220:34)
at PuppeteerAdapter._callListenersWith (/Users/usr/projects/REDACTED/REDACTED/REDACTED-monorepo/node_modules/@pollyjs/adapter-puppeteer/src/index.js:237:12)
at PuppeteerAdapter.attachToPageEvents (/Users/usr/projects/REDACTED/REDACTED/REDACTED-monorepo/node_modules/@pollyjs/adapter-puppeteer/src/index.js:137:10)
at PuppeteerAdapter.onConnect (/Users/usr/projects/REDACTED/REDACTED/REDACTED-monorepo/node_modules/@pollyjs/adapter-puppeteer/src/index.js:39:10)
at PuppeteerAdapter.connect (/Users/usr/projects/REDACTED/REDACTED/REDACTED-monorepo/node_modules/@pollyjs/adapter/src/index.js:48:12)
at Polly.connectTo (/Users/usr/projects/REDACTED/REDACTED/REDACTED-monorepo/node_modules/@pollyjs/core/src/polly.js:297:13)
at forEach (/Users/usr/projects/REDACTED/REDACTED/REDACTED-monorepo/node_modules/@pollyjs/core/src/polly.js:172:52)
at Array.forEach (<anonymous>)
at Polly.configure (/Users/usr/projects/REDACTED/REDACTED/REDACTED-monorepo/node_modules/@pollyjs/core/src/polly.js:172:26)
at new Polly (/Users/usr/projects/REDACTED/REDACTED/REDACTED-monorepo/node_modules/@pollyjs/core/src/polly.js:47:10)
Versions:
"puppeteer": "^24.3.0",
"puppeteer-core": "^24.3.0",
"@pollyjs/adapter-puppeteer": "^6.0.6",
"@pollyjs/core": "^6.0.6",
"@pollyjs/persister-fs": "^6.0.6",I tried this in a completely fresh project. And even tried two example projects with similar integrations. Both have this issue!
Source: Netflix/pollyjs