feat(circle): run tests on node@11 (#517)

#### Summary

<!-- provide a short summary of your changes -->

#### Description

<!-- provide some context -->

#### Technical debt & future

<!--
  Which technical debt does this PR introduce?
  How do we plan to resolve it?
  What is the next step after this PR?
-->

.circleci/config.yml

@@ -24,6 +24,10 @@ executors:
     docker:
       - image: circleci/node:10
     working_directory: *working_directory
+  node_11:
+    docker:
+      - image: circleci/node:11
+    working_directory: *working_directory
 
 commands:
   install_dependencies:
@@ -46,58 +50,51 @@ commands:
     description: 'Running bundlesize check'
     steps:
       - run: yarn test:sizes
-  unit_test:
-    description: 'Running unit tests without covereage'
+  install_and_build:
+    description: 'Installing and building'
     steps:
-      # Limiting the workers of Jest to 10
-      # as the build otherwise dies due to resouce restrictions.
-      - run: yarn test:ci --maxWorkers=10
+      - checkout
+      - restore_cache: *restore_yarn_cache
+      - install_dependencies
+      - build_artefacts
   unit_test_with_coverage:
     description: 'Running unit tests with covereage report'
     steps:
+      - install_and_build
       - run: yarn test:ci:coverage
+  unit_test_without_coverage:
+    description: 'Running unit tests without covereage report'
+    steps:
+      - install_and_build
+      - run: yarn test:ci --maxWorkers=10
 
 jobs:
   lint:
     executor: node_10
     steps:
-      - checkout
-      - restore_cache: *restore_yarn_cache
-      - install_dependencies
-      - save_cache: *save_yarn_cache
-      - build_artefacts
+      - install_and_build
       - lint_code
   type_check:
     executor: node_10
     steps:
-      - checkout
-      - restore_cache: *restore_yarn_cache
-      - install_dependencies
-      - build_artefacts
+      - install_and_build
       - type_check
   bundlesize_check:
     executor: node_10
     steps:
-      - checkout
-      - restore_cache: *restore_yarn_cache
-      - install_dependencies
-      - build_artefacts
+      - install_and_build
       - check_artefacts_bundlesizes
-  build_test_unit_node_8:
+  build_test_node_8:
     executor: node_8
     steps:
-      - checkout
-      - restore_cache: *restore_yarn_cache
-      - install_dependencies
-      - build_artefacts
-      - unit_test_with_coverage
-  build_test_unit_node_10:
+      - unit_test_without_coverage
+  build_test_node_10:
     executor: node_10
     steps:
-      - checkout
-      - restore_cache: *restore_yarn_cache
-      - install_dependencies
-      - build_artefacts
+      - unit_test_without_coverage
+  build_test_node_11:
+    executor: node_11
+    steps:
       - unit_test_with_coverage
 
 workflows:
@@ -108,13 +105,17 @@ workflows:
       - type_check:
           requires:
             - lint
-      - build_test_unit_node_8:
+      - build_test_node_8:
+          requires:
+            - type_check
+      - build_test_node_10:
           requires:
             - type_check
-      - build_test_unit_node_10:
+      - build_test_node_11:
           requires:
             - type_check
       - bundlesize_check:
           requires:
-            - build_test_unit_node_8
-            - build_test_unit_node_10
+            - build_test_node_8
+            - build_test_node_10
+            - build_test_node_11

package.json

@@ -3,7 +3,7 @@
   "name": "flopflip",
   "description": "Monorepository for flipflop and its projects e.g. react-redux, react and the wrapper",
   "scripts": {
-    "postinstall": "check-node-version --package --print && yarn build",
+    "postinstall": "check-node-version --package --print",
     "develop": "jest --projects .jestrc.*.json --watch",
     "lint": "jest --config .jestrc.lint.json",
     "flow": "jest --config .jestrc.flow.json",