Migrate to registry-backed Spago and modernize tooling

.github/workflows/ci.yml

@@ -10,26 +10,28 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
 
-      - uses: purescript-contrib/setup-purescript@main
+      - uses: actions/setup-node@v6
         with:
-          purescript: "unstable"
-
-      - uses: actions/setup-node@v2
-        with:
-          node-version: "14"
+          node-version: "24"
+          cache: npm
 
       - name: Install dependencies
+        run: npm ci
+
+      - name: Check formatting and lint
         run: |
-          npm install -g bower
-          npm install
-          bower install --production
+          npm run format:check
+          npm run lint
 
       - name: Build source
         run: npm run-script build
 
       - name: Run tests
+        run: npm test
+
+      - name: Run browser tests
         run: |
-          bower install
-          npm run-script test --if-present
+          npx playwright install --with-deps chromium
+          npm run testbrowser

.gitignore

@@ -1,9 +1,7 @@
 /.*
 !/.gitignore
-!/.eslintrc.json
+!/.oxfmtrc.json
 !/.github/
-package-lock.json
-/bower_components/
 /node_modules/
 /output/
 .\#*

.oxfmtrc.json

@@ -0,0 +1,3 @@
+{
+  "trailingComma": "es5"
+}

README.md

@@ -20,9 +20,11 @@ Module documentation is [published on Pursuit](http://pursuit.purescript.org/pac
 
 ### Run tests in a browser
 
-Do `npm run testbrowser` then open up `test/index.html` with your browser's web
-console open.
+Run `npm ci`, `npx playwright install chromium`, and `npm run testbrowser` to run
+the tests in Chromium. To inspect them interactively, open `test/index.html`
+with your browser's web console open after building the bundle.
 
 ### Headless testing
 
-Currently not working, but could be run with `npm run test`
+Run `npm test` to run the jsdom tests. Namespace assertions requiring browser
+support run in the Chromium suite.