Web: Install TypeScript definitions for Elix.

Change-Id: I6ca8cafde683921d127599e01c7cada9dbbd5223
diff --git a/src/main/resources/META-INF/resources/.flowconfig b/src/main/resources/META-INF/resources/.flowconfig
index fe59993..81d14f6 100644
--- a/src/main/resources/META-INF/resources/.flowconfig
+++ b/src/main/resources/META-INF/resources/.flowconfig
@@ -5,4 +5,4 @@
 
 [options]
 emoji=true
-module.system.node.resolve_dirname=node_modules
+module.system.node.resolve_dirname=web_modules
diff --git a/src/main/resources/META-INF/resources/package.json b/src/main/resources/META-INF/resources/package.json
index dc8cdeb..3151b82 100644
--- a/src/main/resources/META-INF/resources/package.json
+++ b/src/main/resources/META-INF/resources/package.json
@@ -24,6 +24,7 @@
       "bosonic",
       "elix/define/*.js",
       "lit-html",
+      "elix/define/*.d.ts",
       "normalize-opentype.css/normalize-opentype.css",
       "normalize.css/normalize.css",
       "prefixfree",