[Question] "Cannot read property 'launch' of undefined"

[osmenia]

Hi Team,

I am playing with AWS Lambda and Playwright.

with "playwright-aws-lambda": "^0.5.2", "playwright-core": "^1.0.1", works fine

but with "playwright-aws-lambda": "^0.5.2", "playwright-core": "^1.2.1", does not work.

what could be a problem?

my Code:

const playwright = require('playwright-aws-lambda');

exports.handler = async (event, context) => {
  let result = null;
  let browser = null;

  try {
    const browser = await playwright.launchChromium();
    const context = await browser.newContext();

    const page = await context.newPage();
    await page.goto(event.url || 'https://google.com');

    console.log('Page title: ', await page.title());
  } catch (error) {
    throw error;
  } finally {
    if (browser !== null) {
      await browser.close();
    }
  }
};

Error Message:

{
  "errorType": "TypeError",
  "errorMessage": "Cannot read property 'launch' of undefined",
  "trace": [
    "TypeError: Cannot read property 'launch' of undefined",
    "    at Object.launchChromium (/opt/node_modules/playwright-aws-lambda/dist/src/chromium.js:90:47)",
    "    at async Runtime.exports.handler (/var/task/api/poc1/handler.js:8:21)"
  ]
}

tnx a lot

[mxschmitt]

It seems like its caused by that issue: #2905 since they are using playwright-core internally to launch Chromium.

https://github.com/JupiterOne/playwright-aws-lambda/blob/537234f35a59f4e54445958fb508c45431d9276c/src/chromium.ts#L102-L107

[osmenia]

Hi max tnx a lot, Is there any workaround to start aws lambda with plw core 1.2.1 I am using plw core 1.0.2 and it works fine. Max Schmitt <[email protected]> schrieb am Mi., 22. Juli 2020, 12:38:

…

It seems like its caused by that issue: #2905 <#2905> since they are using playwright-core internally to launch Chromium. https://github.com/JupiterOne/playwright-aws-lambda/blob/537234f35a59f4e54445958fb508c45431d9276c/src/chromium.ts#L102-L107 — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#3084 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJQZIDD6CJMFEGLJOQMWUADR426RZANCNFSM4PERBE7A> .

[mxschmitt]

I think if you add this to your package.json as a dependency it should work as a workaround:

"playwright-core": "npm:[email protected]",

[osmenia]

Hi Max,

I created new layer with:

package.json

....
  "license": "ISC",
  "dependencies": {
    "playwright-aws-lambda": "^0.5.2",
    "playwright-chromium": "^1.2.1",
    "playwright-core": "npm:[email protected]"
  }
} 

Error:

{
  "errorType": "TypeError",
  "errorMessage": "Cannot read property 'launch' of undefined",
  "trace": [
    "TypeError: Cannot read property 'launch' of undefined",
    "    at Object.launchChromium (/opt/nodejs/node_modules/playwright-aws-lambda/dist/src/chromium.js:90:47)",
    "    at processTicksAndRejections (internal/process/task_queues.js:97:5)",
    "    at async Runtime.exports.handler (/var/task/index.js:8:21)"
  ]
}

an then i deleted "playwright-chromium": "^1.2.1" from json file and uploaded new layer,
with

  "dependencies": {
    "playwright-aws-lambda": "^0.5.2",
    "playwright-core": "npm:[email protected]"
  }

this does not help.

am i doing something wrong?

[aslushnikov]

Closing as dupe of #2905