Switch to yarn

Switches from `npm` to `yarn` for dev dependencies for compatibility with other related projects.

.github/workflows/integration_tests.yaml

@@ -2,9 +2,8 @@ name: Integration tests
 
 on: [push, pull_request]
 
-
 jobs:
-  test-saucelabs:
+  test:
     name: Build & test
     runs-on: ubuntu-latest
 
@@ -22,12 +21,12 @@ jobs:
           cache: 'npm'
 
       - name: Install dependencies
-        run: npm ci
+        run: |
+          npm install yarn
+          yarn install
 
       - name: Build
         run: npm run build
 
       - name: "Run integration tests"
         run: npm run wdio:test
-        env:
-          SAUCE_ENABLED: "false"  # ensure we don't use Sauce Labs

.github/workflows/test.yaml

@@ -21,7 +21,9 @@ jobs:
           cache: 'npm'
 
       - name: Install dependencies
-        run: npm ci
+        run: |
+          npm install yarn
+          yarn install
 
       - name: Build
         run: npm run build

.gitignore

@@ -5,5 +5,6 @@
 /coverage
 /.idea
 *.log
-/screenshots
+/screenshots/*
+!/screenshots/.keep
 .env

CONTRIBUTING.md

@@ -4,13 +4,15 @@ Contributions welcome, please raise a pull request.
 
 ## Requirements
 
-You will need a recent version of Node and npm installed:
+You will need a recent version of Node, npm and yarn installed:
 
 ```bash
 $ node -v
-v18.15.0
+18.15.0
 $ npm -v
-v9.5.0
+9.5.0
+$ yarn -v
+1.22.19
 ```
 
 If you want to run the selenium tests, you will also need a local copy of the Java Development Kit:
@@ -74,20 +76,6 @@ To run the integration tests locally with Chrome (specified in [wdio.config.js](
 npm run wdio
 ```
 
-To run the integration tests on [Sauce Labs](https://saucelabs.com/), create a `.env` file with the following:
-
-```bash
-SAUCE_ENABLED="true"
-SAUCE_USERNAME="XXXXXXXX"
-SAUCE_ACCESS_KEY="YYYYYYYY"
-```
-
-And run the same command:
-
-```bash
-npm run wdio
-```
-
 Failed integration tests should output screenshots to the `./screenshots/` folder.
 
 To build the project for distribution: