storyshots-puppeteer: add browserLaunchOptions to CommonConfig

code/addons/storyshots/storyshots-puppeteer/README.md

@@ -107,6 +107,26 @@ initStoryshots({
 });
 ```
 
+### Customizing browser launch options (Puppeteer API)
+
+You might use the `browserLaunchOptions` to specify options for the default browser instance. Will be passed to [puppeteer.launch()](https://pptr.dev/api/puppeteer.puppeteernode.launch)
+
+```js
+import initStoryshots from '@storybook/addon-storyshots';
+import { puppeteerTest } from '@storybook/addon-storyshots-puppeteer';
+
+initStoryshots({
+  suite: 'Puppeteer storyshots',
+  test: puppeteerTest({
+    storybookUrl: 'https://some-local-ssl-url:7777',
+    browserLaunchOptions: {
+      // For ignoring self-signed certificates
+      ignoreHTTPSErrors: true,
+    },
+  }),
+});
+```
+
 ### Specifying custom Chrome executable path (Puppeteer API)
 
 You might use `chromeExecutablePath` to specify the path to a different version of Chrome, without downloading Chromium. Will be passed to [Runs a bundled version of Chromium](https://github.com/GoogleChrome/puppeteer#default-runtime-settings)

code/addons/storyshots/storyshots-puppeteer/src/config.ts

@@ -1,5 +1,5 @@
 import { MatchImageSnapshotOptions } from 'jest-image-snapshot';
-import { ScreenshotOptions, Browser, Page, ElementHandle } from 'puppeteer';
+import { ScreenshotOptions, Browser, Page, ElementHandle, LaunchOptions } from 'puppeteer';
 
 type PuppeteerLifeCycleEvent = 'load' | 'domcontentloaded' | 'networkidle0' | 'networkidle2';
 
@@ -32,6 +32,11 @@ export interface CommonConfig {
   getGotoOptions: (options: Options) => DirectNavigationOptions;
   customizePage: (page: Page) => Promise<void>;
   getCustomBrowser: () => Promise<Browser>;
+  /**
+   * Puppeteer browser launch options:
+   * {@link https://pptr.dev/api/puppeteer.puppeteernode.launch/ puppeteer.launch()}
+   */
+  browserLaunchOptions: LaunchOptions;
   setupTimeout: number;
   testTimeout: number;
 }
@@ -62,6 +67,7 @@ export const defaultCommonConfig: CommonConfig = {
   getGotoOptions: noop,
   customizePage: asyncNoop,
   getCustomBrowser: undefined,
+  browserLaunchOptions: {},
   setupTimeout: 15000,
   testTimeout: 15000,
 };

code/addons/storyshots/storyshots-puppeteer/src/puppeteerTest.ts

@@ -10,6 +10,7 @@ export const puppeteerTest = (customConfig: Partial<PuppeteerTestConfig> = {}) =
     getGotoOptions,
     customizePage,
     getCustomBrowser,
+    browserLaunchOptions,
     testBody,
     setupTimeout,
     testTimeout,
@@ -78,7 +79,13 @@ export const puppeteerTest = (customConfig: Partial<PuppeteerTestConfig> = {}) =
       const puppeteer = require('puppeteer');
       // add some options "no-sandbox" to make it work properly on some Linux systems as proposed here: https://github.com/Googlechrome/puppeteer/issues/290#issuecomment-322851507
       browser = await puppeteer.launch({
-        args: ['--no-sandbox ', '--disable-setuid-sandbox', '--disable-dev-shm-usage'],
+        ...browserLaunchOptions,
+        args: [
+          '--no-sandbox ',
+          '--disable-setuid-sandbox',
+          '--disable-dev-shm-usage',
+          ...(browserLaunchOptions?.args || []),
+        ],
         executablePath: chromeExecutablePath,
       });
     }