diff --git a/.flowconfig b/.flowconfig
index 2e5440c6862ad..0ab4da3dd3c6d 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -36,6 +36,14 @@
 <PROJECT_ROOT>/node_modules/xdl/.*
 <PROJECT_ROOT>/node_modules/reqwest/.*
 <PROJECT_ROOT>/node_modules/metro-bundler/.*
+<PROJECT_ROOT>/node_modules/fbjs/.*
+<PROJECT_ROOT>/node_modules/graphql/.*
+<PROJECT_ROOT>/node_modules/prettier/.*
+
+; Gutenberg tools
+<PROJECT_ROOT>/gutenberg/node_modules/findup/.*
+<PROJECT_ROOT>/gutenberg/node_modules/cypress/.*
+<PROJECT_ROOT>/gutenberg/node_modules/config-chain/.*
 
 ; Hack to make Flow works on OS X with a RN project
 <PROJECT_ROOT>/node_modules/metro/.*
diff --git a/.travis.yml b/.travis.yml
index d12a2e4dcd48d..9986fcfbdf615 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,6 @@
+before_script:
+  - yarn install
+
 matrix:
   include:
     - language: node_js
@@ -6,5 +9,4 @@ matrix:
       cache:
         yarn: true
       script:
-        - yarn install
-        - npm run flow
+        - ./.travis/travis-checks-js.sh
diff --git a/.travis/travis-checks-js.sh b/.travis/travis-checks-js.sh
new file mode 100755
index 0000000000000..8917611b70555
--- /dev/null
+++ b/.travis/travis-checks-js.sh
@@ -0,0 +1,11 @@
+function pOk() {
+  echo "[$(tput setaf 2)OK$(tput sgr0)]"
+}
+
+function pFail() {
+  echo "[$(tput setaf 1)KO$(tput sgr0)]"
+  exit 1
+}
+
+npm run flow || pFail
+npm run prettier-check || pFail