Aliasify

The equivalent config for Travis is only 87 lines long, and easy to read. Can CircleCI be similarly easy to read? Is this easy? Are you still reading this?

.circleci/config.yml

-# Javascript Node CircleCI 2.0 configuration file
-#
-# Check https://circleci.com/docs/2.0/language-javascript/ for more details
-#
 version: 2.1
-jobs:
-  build:
+aliases:
+  - &step_restore_git_cache
+    restore_cache:
+      keys:
+        - v1-git-{{ .Revision }}
+        - v1-git-
+  - &step_save_git_cache
+    save_cache:
+      paths:
+        - .git
+      key: v1-git-{{ .Revision }}
+  - &step_restore_dependency_cache
+    restore_cache:
+      keys:
+        - v1-dependencies-{{ checksum "package-lock.json" }}
+        - v1-dependencies-
+  - &step_save_dependency_cache
+    save_cache:
+      paths:
+        - node_modules
+      key: v1-dependencies-{{ checksum "package-lock.json" }}
+  - &step_save_build_cache
+    save_cache:
+      paths:
+        - build
+      key: v1-build-{{ .Revision }}
+  - &step_restore_build_cache
+    restore_cache:
+      keys:
+        - v1-build-{{ .Revision }}
+  - &step_save_dist_cache
+    save_cache:
+      paths:
+        - dist
+      key: v1-dist-{{ .Revision }}
+  - &step_restore_dist_cache
+    restore_cache:
+      keys:
+        - v1-dist-{{ .Revision }}
+  - &config_job_environment
     docker:
       - image: circleci/node:8.16-browsers
-    
+    working_directory: ~/repo
+  - &config_deploy_requirements
+    requires:
+      - build
+    filters:
+      branches:
+        only:
+          - master
+          - develop
+          - smoke
+          - circle
+          - /^hotfix\/.*/
+
+jobs:
+  build:
+    <<: *config_job_environment
     environment:
       NODE_ENV: production
       JEST_JUNIT_OUTPUT_NAME: results.xml
-    working_directory: ~/repo
-
     steps:
-      - restore_cache:
-          keys:
-            - v1-git-{{ .Revision }}
-            - v1-git-
+      - *step_restore_git_cache
       - checkout
-      - save_cache:
-          paths:
-            - .git
-          key: v1-git-{{ .Revision }}
-
-      # Download and cache dependencies
-      - restore_cache:
-          keys:
-            - v1-dependencies-{{ checksum "package-lock.json" }}
-            # fallback to using the latest cache if no exact match is found
-            - v1-dependencies-
-
+      - *step_save_git_cache
+      - *step_restore_dependency_cache
       - run: sudo npm install -g greenkeeper-lockfile
       - run: npm --production=false install
       - run: greenkeeper-lockfile-update
-
-      - save_cache:
-          paths:
-            - node_modules
-          key: v1-dependencies-{{ checksum "package-lock.json" }}
-
+      - *step_save_dependency_cache
       - run:
           name: Lint
           command: npm run test:lint -- --quiet --output-file test-results/eslint/results.xml --format junit
-      
       - run:
           name: Unit
           environment:
@@ -51,7 +79,6 @@ jobs:
           command: npm run test:unit -- --reporters="default" --reporters="jest-junit" --coverage --coverageReporters=text --coverageReporters=lcov
       - store_artifacts:
           path: coverage
-      
       - run:
           name: Build
           command: npm run build
@@ -59,16 +86,8 @@ jobs:
           path: build
       - store_artifacts:
           path: dist
-      - save_cache:
-          paths:
-            - build
-          key: v1-build-{{ .Revision }}
-      - save_cache:
-          paths:
-            - dist
-          key: v1-dist-{{ .Revision }}
-      
-      
+      - *step_save_build_cache
+      - *step_save_dist_cache
       - run:
           name: Integration
           environment:
@@ -76,12 +95,10 @@ jobs:
           command: npm run test:integration -- --reporters="default" --reporters="jest-junit"
       - store_test_results:
           path: test-results
-
       - run: greenkeeper-lockfile-upload
+
   deploy-npm:
-    docker:
-      - image: circleci/node:8.16-browsers
-    working_directory: ~/repo
+    <<: *config_job_environment
     environment:
       NODE_OPTIONS: --max-old-space-size=4000
     steps:
@@ -94,14 +111,9 @@ jobs:
           if [[ "$CIRCLE_BRANCH" == hotfix/* ]] # double brackets are important for matching the wildcard
             then echo export NPM_TAG=circlehotfix >> $BASH_ENV
           fi
-      - restore_cache:
-          keys:
-            - v1-git-{{ .Revision }}
-            - v1-git-
+      - *step_restore_git_cache
       - checkout
-      - restore_cache:
-          keys:
-            - v1-dist-{{ .Revision }}
+      - *step_restore_dist_cache
       - run: npm version --no-git-tag-version $RELEASE_VERSION
       - run: |
           npm set //registry.npmjs.org/:_authToken=$NPM_TOKEN
@@ -110,37 +122,16 @@ jobs:
       - run: git push $CIRCLE_REPOSITORY_URL $RELEASE_VERSION
 
   deploy-gh-pages:
-    docker:
-      - image: circleci/node:8.16-browsers
-    working_directory: ~/repo
+    <<: *config_job_environment
     steps:
-      - restore_cache:
-          keys:
-            - v1-git-{{ .Revision }}
-            - v1-git-
+      - *step_restore_git_cache
       - checkout
       - run: |
           git config --global user.email $(git log --pretty=format:"%ae" -n1)
           git config --global user.name $(git log --pretty=format:"%an" -n1)
-      - restore_cache:
-          keys:
-            - v1-build-{{ .Revision }}
-      - restore_cache:
-          keys:
-            - v1-dependencies-{{ checksum "package-lock.json" }}
+      - *step_restore_build_cache
+      - *step_restore_dependency_cache
       - run: npm run deploy -- -e $CIRCLE_BRANCH
-
-deploy-requirements: &deploy-requirements
-  requires:
-    - build
-  filters:
-    branches:
-      only:
-        - master
-        - develop
-        - smoke
-        - circle
-        - /^hotfix\/.*/
       
 workflows:
   version: 2
@@ -148,6 +139,6 @@ workflows:
     jobs:
       - build
       - deploy-npm:
-          <<: *deploy-requirements
+          <<: *config_deploy_requirements
       - deploy-gh-pages:
-          <<: *deploy-requirements
+          <<: *config_deploy_requirements