Infrastructure cleanup

.circleci/config.yml

@@ -0,0 +1,77 @@
+version: 2
+
+#
+# Reusable Snippets!
+#
+# These are re-used by the various tests below, to avoid repetition.
+#
+run_install_desired_npm: &run_install_desired_npm
+  run:
+    name: Install npm@6.
+    command: sudo npm install -g npm@6
+
+# These are the steps used for each version of Node which we're testing
+# against.  Thanks to YAMLs inability to merge arrays (though it is able
+# to merge objects), every version of Node must use the exact same steps,
+# or these steps would need to be repeated in a version of Node that needs
+# something different.  Probably best to avoid that, out of principle, though.
+common_test_steps: &common_test_steps
+  steps:
+    - *run_install_desired_npm
+    - checkout
+    - restore_cache:
+        keys:
+          # When lock file changes, use increasingly general patterns to restore cache
+          - npm-v1-{{ .Branch }}-{{ checksum "package-lock.json" }}
+          - npm-v1-{{ .Branch }}-
+          - npm-v1-
+    - run: npm --version
+    - run: npm ci
+    - save_cache:
+        key: npm-v1-{{ .Branch }}-{{ checksum "package-lock.json" }}
+        paths:
+          # This should cache the npm cache instead of node_modules, which is needed because
+          # npm ci actually removes node_modules before installing to guarantee a clean slate.
+          - ~/.npm
+    - run: npm run circle
+
+# Important! When adding a new job to `jobs`, make sure to define when it
+# executes by also adding it to the `workflows` section below!
+jobs:
+  # Platform tests, each with the same tests but different platform or version.
+  # The docker tag represents the Node.js version and the full list is available
+  # at https://hub.docker.com/r/circleci/node/.
+  Node.js 8:
+    docker: [{ image: "circleci/node:8" }]
+    <<: *common_test_steps
+
+  Node.js 10:
+    docker: [{ image: "circleci/node:10" }]
+    <<: *common_test_steps
+
+  # Other tests, unrelated to typical code tests.
+  Linting:
+    docker: [{ image: "circleci/node:8" }]
+    steps:
+      # (speed) Intentionally omitted, unnecessary, run_install_desired_npm.
+      - checkout
+      # (speed) --ignore-scripts to skip unnecessary Lerna build during linting.
+      - run: npm install --ignore-scripts
+      - run: npm run lint
+
+ignore_doc_branches: &ignore_doc_branches
+  filters:
+    branches:
+      # If 'docs' is found, with word boundaries on either side, skip.
+      ignore: /.*?\bdocs\b.*/
+
+workflows:
+  version: 2
+  Build and Test:
+    jobs:
+      - Node.js 8:
+          <<: *ignore_doc_branches
+      - Node.js 10:
+          <<: *ignore_doc_branches
+      - Linting:
+          <<: *ignore_doc_branches

lerna.json

@@ -1,8 +1,6 @@
 {
-  "lerna": "2.11.0",
   "packages": [
     "packages/*"
   ],
-  "version": "independent",
-  "hoist": true
+  "version": "independent"
 }