[infra] Update rollup config and remove unneeded types packages (#1136)

Author: augustjk

package-lock.json

@@ -30,7 +30,6 @@ const terserOptions = {
 
 export default [
   {
-    name: 'client',
     input: [
       // lit-hydrate-support MUST be loaded first to make sure lit hydration
       // helpers are bundled before LitElement attempts to use hydration support
@@ -100,14 +99,13 @@ export default [
         showMinifiedSize: false,
       }),
     ],
+    preserveEntrySignatures: false,
   },
+
+  // A separate bundle is made for the server so that we do not modify the
+  // client module graph just to SSR a component.
   {
-    name: 'SSR',
-    input: [
-      // A separate bundle is made for the server so that we do not modify the
-      // client module graph just to SSR a component.
-      'lib/components/ssr.js',
-    ],
+    input: ['lib/components/ssr.js'],
     output: {
       dir: 'rollupout/server',
       format: 'esm',

packages/lit-dev-content/rollup.config.js

@@ -74,7 +74,6 @@
     "@types/koa-conditional-get": "^2.0.0",
     "@types/koa-etag": "^3.0.0",
     "@types/koa-send": "^4.1.3",
-    "@types/koa-static": "^4.0.1",
-    "@types/node-fetch": "^3.0.3"
+    "@types/koa-static": "^4.0.1"
   }
 }

packages/lit-dev-server/package.json

@@ -39,7 +39,6 @@
   },
   "dependencies": {
     "@types/jsdom": "^16.2.13",
-    "@types/source-map": "^0.5.7",
     "@types/strip-comments": "^2.0.1",
     "@web/dev-server": "^0.1.6",
     "@web/dev-server-core": "^0.3.5",