use node10 for circleci testing

Author: luisrudge

.circleci/config.yml

@@ -2,17 +2,17 @@ version: 2
 jobs:
   build-and-test:
     docker:
-      - image: circleci/node:6.14.3-browsers
+      - image: circleci/node:10
     environment:
-          LANG: en_US.UTF-8
+      LANG: en_US.UTF-8
     steps:
       - checkout
-      - run: 
+      - run:
           name: Update Yarn
           command: 'sudo npm update -g yarn'
       - restore-cache:
           name: Restore Yarn Package Cache
-          keys: 
+          keys:
             - yarn-packages-{{ checksum "yarn.lock" }}
       - run:
           name: Install Dependencies
@@ -22,13 +22,13 @@ jobs:
           key: yarn-packages-{{ checksum "yarn.lock" }}
           paths:
             - ~/.cache/yarn
-      - run: 
+      - run:
           name: Check
           command: yarn check
-      - run: 
+      - run:
           name: Tests
           command: yarn test:ci
-      - run: 
+      - run:
           name: Generate Coverage
           command: yarn test:coverage