build(catalog): re-enable catalog typechecking

This enables typechecking on the catalog so that we catch type build issues in CI next time. Type issues didn't break before since we run our code through esbuild, and it was disabled because of some weird 11ty issues that are fixed in this CL

.gitignore

@@ -20,4 +20,5 @@ catalog/site/components/*.md
 catalog/site/components/images
 catalog/*.tsbuildinfo
 catalog/stories/*/
-!catalog/stories/components/
+!catalog/stories/components/
+!catalog/src/types/**/*.d.ts

catalog/package.json

@@ -22,7 +22,8 @@
     "build:dev": {
       "dependencies": [
         "build:dev:eleventy",
-        "build:dev:ts"
+        "build:dev:ts",
+        "build:type-check"
       ]
     },
     "build:dev:eleventy": {
@@ -66,12 +67,16 @@
       "clean": "if-file-deleted",
       "output": [
         "tsconfig.tsbuildinfo"
+      ],
+      "dependencies": [
+        "..:build"
       ]
     },
     "build:prod": {
       "dependencies": [
         "build:prod:eleventy",
-        "build:prod:ts"
+        "build:prod:ts",
+        "build:type-check"
       ]
     },
     "build:prod:eleventy": {

catalog/src/types/is-land.d.ts

@@ -0,0 +1,11 @@
+/**
+ * @license
+ * Copyright 2023 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+declare module '@11ty/is-land' {
+  export class Island extends HTMLElement {
+    forceFallback(): void;
+  }
+}

catalog/tsconfig.json

@@ -12,7 +12,8 @@
     "useDefineForClassFields": false,
     "forceConsistentCasingInFileNames": true,
     "noEmit": true,
-    "skipLibCheck": true
+    "skipLibCheck": true,
+    "types": []
   },
   "include": ["src/**/*", "stories/*", "stories/components"],
   "exclude": []