feat(jest-environment-puppeteer): added config option for global err msg (#35)

Closes #34

Author: kaufmann42

packages/jest-environment-puppeteer/README.md

@@ -65,6 +65,7 @@ it('should fill an input', async () => {
 You can specify a `jest-puppeteer.config.js` at the root of the project or define a custom path using `JEST_PUPPETEER_CONFIG` environment variable.
 
 * `launch` <[object]> [All Puppeteer launch options](https://github.com/GoogleChrome/puppeteer/blob/master/docs/api.md#puppeteerlaunchoptions) can be specified in config. Since it is JavaScript, you can use all stuff you need, including environment.
+* `exitOnPageError` <[boolean]> Exits page on any global error message thrown. Defaults to `true`.
 * `server` <[Object]> Server options
   * `command` <[string]> Command to start server
   * `port` <[number]> If specified, it will wait port to be listened

packages/jest-environment-puppeteer/src/PuppeteerEnvironment.js

@@ -21,7 +21,9 @@ class PuppeteerEnvironment extends NodeEnvironment {
       browserWSEndpoint: wsEndpoint,
     })
     this.global.page = await this.global.browser.newPage()
-    this.global.page.addListener('pageerror', handleError)
+    if (config && config.exitOnPageError) {
+      this.global.page.addListener('pageerror', handleError)
+    }
   }
 
   async teardown() {

packages/jest-environment-puppeteer/src/readConfig.js

@@ -8,11 +8,13 @@ const exists = promisify(fs.exists)
 
 const DEFAULT_CONFIG = {
   launch: {},
+  exitOnPageError: true
 }
 const DEFAULT_CONFIG_CI = {
   launch: {
     args: ['--no-sandbox', '--disable-setuid-sandbox'],
   },
+  exitOnPageError: true
 }
 
 async function readConfig() {