diff --git a/packages/sites/src/domains/_lookup-portal.ts b/packages/sites/src/domains/_lookup-portal.ts
index 66976e9832e..79554d7a996 100644
--- a/packages/sites/src/domains/_lookup-portal.ts
+++ b/packages/sites/src/domains/_lookup-portal.ts
@@ -1,5 +1,5 @@
 import { searchItems } from "@esri/arcgis-rest-portal";
-import { IHubRequestOptions } from "@esri/hub-common";
+import { IHubRequestOptions, includes } from "@esri/hub-common";
 
 /**
  * Lookup a domain in Portal
@@ -29,7 +29,7 @@ export function _lookupPortal(
       // since the search api stems the terms, we need to verify
       // by looking at the results
       return res.results.filter(r => {
-        return r.typeKeywords.includes(queryTerm);
+        return includes(r.typeKeywords, queryTerm);
       })[0];
     })
     .then(site => {
diff --git a/tsconfig.json b/tsconfig.json
index c3340d648e1..7902c6f8a81 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,8 +5,7 @@
     "module": "es2015",                     /* Specify module code generation: 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
     "lib": [
       "dom",
-      "es2015",
-      "es2017"
+      "es2015"
     ],                             /* Specify library files to be included in the compilation:  */
     // "allowJs": true,                       /* Allow javascript files to be compiled. */
     // "checkJs": true,                       /* Report errors in .js files. */