Lighthouse Check Orb

A CircleCI Orb for running Lighthouse audits automatically in a workflow with a rich set of extra features. Simple implementation or advanced customization including Slack notifications, AWS S3 HTML report uploads, and more!

This project provides two ways of running audits - "locally" by default in a dockerized environment or remotely via Foo's Automated Lighthouse Check API. For basic usage, running locally will suffice, but if you'd like to maintain a historical record of Lighthouse audits and utilize other features, you can follow the steps and examples.

How this Project Differs from Others

Simple configuration or choose from a variety of features below. See the example Lighthouse Check Orb implementation.

• 💛 Lighthouse audit multiple URLs or just one.
• 💛 Save a record of all your audits via Foo's Automated Lighthouse Check.
• 💗 Save HTML reports locally.
• 💚 Upload HTML reports as artifacts.
• 💙 Upload HTML reports to AWS S3.
• ❤️ Fail a workflow when minimum scores aren't met. Example at the bottom.
• 💜 Slack notifications.
• 💖 Slack notifications with Git info (author, branch, PR, etc).

Table of Contents

• Screenshots
  • Output
  • Save HTML Reports as Artifacts
  • HTML Reports
  • Slack Notifications
  • Fail Workflow when Minimum Scores Aren't Met
• Parameters
• Usage
  • Standard Example
  • Failing Workflows by Enforcing Minimum Scores
  • Foo API

Screenshots

A visual look at the things you can do.

Screenshot: Output

Screenshot: Save HTML Reports as Artifacts

Screenshot: HTML Reports

Screenshot: Slack Notifications

Screenshot: Fail Workflow when Minimum Scores Aren't Met

Parameters

You can choose from two ways of running audits - "locally" in a dockerized environment (by default) or remotely via the Foo's Automated Lighthouse Check API. For directions about how to run remotely see the Foo API Usage section. We denote which options are available to a run type with the Run Type values of either local, remote, or both respectively.

Name	Description	Type	Run Type	Default
apiToken	The foo.software account API token found in the dashboard.	string	remote	undefined
author	For Slack notifications: A user handle, typically from GitHub.	string	both	$CIRCLE_USERNAME
awsAccessKeyId	The AWS accessKeyId for an S3 bucket.	string	local	$LIGHTHOUSE_CHECK_AWS_ACCESS_KEY_ID
awsBucket	The AWS Bucket for an S3 bucket.	string	local	$LIGHTHOUSE_CHECK_AWS_BUCKET
awsRegion	The AWS region for an S3 bucket.	string	local	$LIGHTHOUSE_CHECK_AWS_REGION
awsSecretAccessKey	The AWS secretAccessKey for an S3 bucket.	string	local	$LIGHTHOUSE_CHECK_AWS_SECRET_ACCESS_KEY
branch	For Slack notifications: A version control branch, typically from GitHub.	string	both	$CIRCLE_BRANCH
configFile	A configuration file path in JSON format which holds all options defined here. This file should be relative to the file being interpretted. In this case it will most likely be the root of the repo ("./")	string	both	undefined
emulatedFormFactor	Lighthouse setting only used for local audits. See lighthouse-check comments for details.	oneOf(['mobile', 'desktop']	local	mobile
extraHeaders	Stringified HTTP Header object key/value pairs to send in requests. example: '{ \"x-hello-world\": \"foobar\", \"x-some-other-thing\": \"hi\" }'	string	local	undefined
locale	A locale for Lighthouse reports. Example: ja	string	local	undefined
maxWaitForLoad	The maximum amount of time to wait for a page to load in ms.	number	local	undefined
overridesJsonFile	A JSON file with config and option fields to overrides defaults. Read more here.	string	local	undefined
pr	For Slack notifications: A version control pull request URL, typically from GitHub.	string	both	undefined
prCommentAccessToken	Access token of a user to post PR comments.	string	both	undefined
prCommentEnabled	If true and prCommentAccessToken is set along with prCommentUrl, scores will be posted as comments.	boolean	both	true
prCommentSaveOld	If true and PR comment options are set, new comments will be posted on every change vs only updating once comment with most recent scores.	boolean	both	false
prCommentUrl	An endpoint to post comments to. Typically this will from GitHub's API. Example: https://api.github.com/repos/:owner/:repo/pulls/:pull_number/reviews	string	both	undefined
sha	For Slack notifications: A version control sha, typically from GitHub.	string	both	undefined
slackWebhookUrl	A Slack Incoming Webhook URL to send notifications to.	string	both	$LIGHTHOUSE_CHECK_SLACK_WEBHOOK_URL
throttling	Lighthouse setting only used for local audits. See lighthouse-check comments for details.	oneOf(['mobileSlow4G', 'mobileRegluar3G'])	local	mobileSlow4G
tag	An optional tag or name (example: build #2 or v0.0.2).	string	remote	undefined
throttlingMethod	Lighthouse setting only used for local audits. See lighthouse-check comments for details.	oneOf(['simulate', 'devtools', 'provided'])	local	simulate
timeout	Minutes to timeout. If wait is true (it is by default), we wait for results. If this timeout is reached before results are received an error is thrown.	string	local	10
urls	A comma-separated list of URLs to be audited.	string	both	undefined
wait	If true, waits for all audit results to be returned, otherwise URLs are only enqueued.	boolean	remote	true

Usage

Below are example combinations of ways to use this Orb.

Usage: Standard Example

In the below example we run Lighthouse on two URLs, log scores, save the HTML reports as artifacts, upload reports to AWS S3, notify via Slack with details about the change from Git data.

version: 2.1

orbs:
  lighthouse-check: foo-software/[email protected] # ideally later :)

jobs:
  test: 
    executor: lighthouse-check/default
    steps:
      - lighthouse-check/audit:
          urls: https://www.foo.software,https://www.foo.software/contact
          # this serves as an example, however if the below environment variables
          # are set - the below params aren't even necessary. for example - if
          # LIGHTHOUSE_CHECK_AWS_ACCESS_KEY_ID is already set - you don't need
          # the line below.
          awsAccessKeyId: $LIGHTHOUSE_CHECK_AWS_ACCESS_KEY_ID
          awsBucket: $LIGHTHOUSE_CHECK_AWS_BUCKET
          awsRegion: $LIGHTHOUSE_CHECK_AWS_REGION
          awsSecretAccessKey: $LIGHTHOUSE_CHECK_AWS_SECRET_ACCESS_KEY
          slackWebhookUrl: $LIGHTHOUSE_CHECK_SLACK_WEBHOOK_URL

workflows:
  test:
    jobs:
      - test

Usage: Failing Workflows by Enforcing Minimum Scores

We can optionally fail a workflow if minimum scores aren't met. We do this using the validate-status command.

version: 2.1

orbs:
  lighthouse-check: foo-software/[email protected] # ideally later :)

jobs:
  test: 
    executor: lighthouse-check/default
    steps:
      - lighthouse-check/audit:
          urls: https://www.foo.software,https://www.foo.software/contact
      - lighthouse-check/validate-status:
          minAccessibilityScore: "50"
          minBestPracticesScore: "50"
          minPerformanceScore: "99"
          minProgressiveWebAppScore: "50"
          minSeoScore: "50"

workflows:
  test:
    jobs:
      - test

Usage: Foo API

Foo's Automated Lighthouse Check can monitor your website's quality by running audits automatically! It can provide a historical record of audits over time to track progression and degradation of website quality. Create a free account to get started. With this, not only will you have automatic audits, but also any that you trigger additionally. Below are steps to trigger audits on URLs that you've created in your account.

Trigger Audits on All Pages in an Account

• Navigate to your account details, click into "Account Management" and make note of the "API Token".
• Use the account token as the apiToken parameter.

Basic example

usage:
  version: 2.1

  orbs:
    lighthouse-check: foo-software/[email protected] # ideally later :)

  jobs:
    test: 
      executor: lighthouse-check/default
      steps:
        - lighthouse-check/audit:
            apiToken: $LIGHTHOUSE_CHECK_API_TOKEN

  workflows:
    test:
      jobs:
        - test

Trigger Audits on Only Certain Pages in an Account

• Navigate to your account details, click into "Account Management" and make note of the "API Token".
• Navigate to your dashboard and once you've created URLs to monitor, click on the "More" link of the URL you'd like to use. From the URL details screen, click the "Edit" link at the top of the page. You should see an "API Token" on this page. It represents the token for this specific page (not to be confused with an account API token).
• Use the account token as the apiToken parameter and page token (or group of page tokens) as urls parameter.

Basic example

usage:
  version: 2.1

  orbs:
    lighthouse-check: foo-software/[email protected] # ideally later :)

  jobs:
    test: 
      executor: lighthouse-check/default
      steps:
        - lighthouse-check/audit:
            apiToken: $LIGHTHOUSE_CHECK_API_TOKEN
            urls: 'mypagetoken1,mypagetoken2'

  workflows:
    test:
      jobs:
        - test

Example with pull request comments

usage:
  version: 2.1

  orbs:
    lighthouse-check: foo-software/[email protected] # ideally later :)

  jobs:
    test: 
      executor: lighthouse-check/default
      steps:
        - lighthouse-check/audit:
            apiToken: $LIGHTHOUSE_CHECK_API_TOKEN
            prCommentAccessToken: $LIGHTHOUSE_CHECK_ACCESS_TOKEN
            prCommentUrl: https://api.github.com/repos/foo-software/lighthouse-check-orb/pulls/${CIRCLE_PULL_REQUEST##*/}/reviews
            urls: 'mypagetoken1,mypagetoken2'

  workflows:
    test:
      jobs:
        - test

Usage: Overriding Config and Option Defaults

Note: this approach is only available when running "locally" (not using the REST API)

You can override default config and options by specifying overridesJsonFile option which is consumed by path.resolve(overridesJsonFile). Contents of this overrides JSON file can have two possible fields; options and config. These two fields are eventually used by Lighthouse to populate opts and config arguments respectively as illustrated in Using programmatically. The two objects populating this JSON file are merged shallowly with the default config and options.

Example content of overridesJsonFile

{
  "config": {
    "settings": {
      "onlyCategories": ["performance"]
    }
  },
  "options": {
    "disableStorageReset": true
  }
}

Credits

This package was brought to you by Foo - a website performance monitoring tool. Create a free account with standard performance testing. Automatic website performance testing, uptime checks, charts showing performance metrics by day, month, and year. Foo also provides real time notifications. Users can integrate email, Slack and PagerDuty notifications.