Add attw

Author: cmdcolin

.github/workflows/push.yml

@@ -70,3 +70,29 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: crate-ci/typos@master
+
+  attw:
+    name: Check types (attw)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10
+
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22.x
+          cache: 'pnpm'
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Build packages
+        run: pnpm build:lib
+
+      - name: Check types with attw
+        run: pnpm attw

package.json

@@ -13,9 +13,11 @@
     "release": "node scripts/release.js",
     "release:patch": "node scripts/release.js patch",
     "release:minor": "node scripts/release.js minor",
-    "release:major": "node scripts/release.js major"
+    "release:major": "node scripts/release.js major",
+    "attw": "pnpm -r --filter react-msaview --filter msa-parsers --filter @jbrowse/svgcanvas exec attw --pack . --ignore-rules cjs-resolves-to-esm"
   },
   "devDependencies": {
+    "@arethetypeswrong/cli": "^0.18.1",
     "@babel/core": "^7.28.5",
     "@babel/preset-env": "^7.28.5",
     "@babel/preset-react": "^7.28.5",

packages/lib/src/model.ts

@@ -1530,7 +1530,7 @@ function stateModelFactory() {
             .map(t => ({
               model: {
                 ...t,
-                data: hideGapsEffective ? skipBlanks(blanks, t.data!) : t.data!,
+                data: hideGapsEffective ? skipBlanks(blanks, t.data!) : t.data,
                 height: rowHeight,
               } as TextTrackModel,
               ReactComponent: TextTrack,