make sure we typecheck against development source, not published declarations

Author: ef4

package.json

@@ -13,8 +13,8 @@
   },
   "exports": {
     ".": {
-      "types": "./declarations/index.d.ts",
       "developing-@cardstack/view-transitions": "./src/index.ts",
+      "types": "./declarations/index.d.ts",
       "default": "./dist/index.js"
     },
     "./addon-main.js": "./addon-main.cjs"

tsconfig.json

@@ -18,6 +18,7 @@
       "vite/client",
       "@embroider/core/virtual",
       "@glint/ember-tsc/types"
-    ]
+    ],
+    "customConditions": ["developing-@cardstack/view-transitions"]
   }
 }