Serverless-offline: Cannot start puppeteer while offline (v6)

Created on 9 Mar 2020 · 6Comments · Source: dherault/serverless-offline

Bug Report

Function cannot start puppeteer when invoked via local http server.

Working properly with serverless-offline 5.x
Breaking with version 6.x (6.0.0-alpha.67) - no changes made in the code, just switching versions

Current Behavior

Error thrown when endpoint is hit.

Endpoint returns 502 Bad Gateway
and following error and stack trace is thrown:
````
Error: Failed to launch the browser process! spawn %userprofile%\AppData\Local\Temp\chromium ENOENT

TROUBLESHOOTING: https://github.com/puppeteer/puppeteer/blob/master/docs/troubleshooting.md

at onClose (...redacted...\services\checker\node_modules\puppeteer\lib\Launcher.js:750:14)
at ChildProcess.<anonymous> (...redacted...\services\checker\node_modules\puppeteer\lib\Launcher.js:741:65)        
at ChildProcess.emit (events.js:311:20)
at ChildProcess.EventEmitter.emit (domain.js:482:12)
at Process.ChildProcess._handle.onexit (internal/child_process.js:273:12)
at onErrorNT (internal/child_process.js:469:16)
at processTicksAndRejections (internal/process/task_queues.js:84:21)

````
even though chromium binary exists in the path mentioned in the stack trace

I am able to reproduce it by running sls offline and hitting POST http://localhost:3000/dev

Sample Code

file: serverless.yml

org: someorg
app: someapp
service: checker

provider:
  name: aws
  region: eu-west-1
  versionFunctions: false
  layers:
    - arn:aws:lambda:${self:provider.region}:764866452798:layer:chrome-aws-lambda:8
  # function parameters
  runtime: nodejs12.x
  memorySize: 1024
  timeout: 30

functions:
  check:
    handler: src/handler.check
    events:
      - http:
          path: /
          method: post
          request:
            parameters:
              paths:
                url: true

plugins:
  - serverless-jest-plugin
  - serverless-offline

package:
  exclude:
    - node_modules/puppeteer/.local-chromium/**

file: handler.js

const chromium = require('chrome-aws-lambda');

exports.check = async (event, context) => {
    let result;
    try {
        browser = await chromium.puppeteer.launch({
            args: chromium.args,
            defaultViewport: chromium.defaultViewport,
            executablePath: await chromium.executablePath,
            headless: false,
            ignoreDefaultArgs: ['--disable-extensions']
        });

        let page = await browser.newPage();

        const response = await page.goto(event.url || 'https://example.com');

        result = response.status();
    } catch (error) {
        return context.fail(error);
    } finally {
        if (browser !== null) {
            await browser.close();
        }
    }
    return context.succeed(result);
};