diff --git a/wherehows-web/app/constants/datasets/owner.ts b/wherehows-web/app/constants/datasets/owner.ts
index a33e197e25..1fa92b09d5 100644
--- a/wherehows-web/app/constants/datasets/owner.ts
+++ b/wherehows-web/app/constants/datasets/owner.ts
@@ -25,13 +25,10 @@ const minRequiredConfirmedOwners = 2;
 const ownerAlreadyExists = (
   owners: Array<IOwner>,
   { userName, source }: Pick<IOwner, 'userName' | 'source'>
-): boolean => {
-  /* prettier-ignore */
-  // https://github.com/prettier/prettier/issues/3805
-  return (userName && source)
+): boolean =>
+  userName && source
     ? owners.map(({ userName, source }) => `${userName}:${source}`).includes(`${userName}:${source}`)
     : false;
-};
 
 // overloads
 function updateOwner(owners: Array<IOwner>, owner: IOwner, props: IOwner): void | Array<IOwner>;
diff --git a/wherehows-web/package.json b/wherehows-web/package.json
index 97393b3434..e1dfea4778 100644
--- a/wherehows-web/package.json
+++ b/wherehows-web/package.json
@@ -19,7 +19,7 @@
     "eslint-check-prettier-conflict": "./node_modules/.bin/eslint --print-config .eslintrc.js | ./node_modules/.bin/eslint-config-prettier-check"
   },
   "devDependencies": {
-    "@types/ember": "2.8.5",
+    "@types/ember": "^2.8.7",
     "@types/ember-testing-helpers": "^0.0.3",
     "@types/lodash": "^4.14.83",
     "@types/rsvp": "^4.0.0",
diff --git a/wherehows-web/tsconfig.json b/wherehows-web/tsconfig.json
index 485fe7f02f..21a92bdbcd 100644
--- a/wherehows-web/tsconfig.json
+++ b/wherehows-web/tsconfig.json
@@ -10,6 +10,7 @@
     "module": "es6",
     "allowSyntheticDefaultImports": true,
     "noEmit": true,
+    "noEmitOnError": true,
     "noImplicitThis": true,
     "noImplicitAny": true,
     "strictNullChecks": true,
diff --git a/wherehows-web/yarn.lock b/wherehows-web/yarn.lock
index 82082e94cb..e0dcecefac 100644
--- a/wherehows-web/yarn.lock
+++ b/wherehows-web/yarn.lock
@@ -141,9 +141,9 @@
     "@types/jquery" "*"
     "@types/rsvp" "*"
 
-"@types/ember@2.8.5":
-  version "2.8.5"
-  resolved "https://registry.yarnpkg.com/@types/ember/-/ember-2.8.5.tgz#66f3ced02924e403e80a37eeb3e5524165db0a41"
+"@types/ember@^2.8.7":
+  version "2.8.7"
+  resolved "https://registry.yarnpkg.com/@types/ember/-/ember-2.8.7.tgz#9a4e73998aef5b39b671a2abe31560d7b76118db"
   dependencies:
     "@types/handlebars" "*"
     "@types/jquery" "*"