build: update to latest build files (#929)

Author: Benjamin E. Coe

.github/workflows/ci.yaml

@@ -16,6 +16,12 @@ jobs:
         with:
           node-version: ${{ matrix.node }}
       - run: node --version
+      # The first installation step ensures that all of our production
+      # dependencies work on the given Node.js version, this helps us find
+      # dependencies that don't match our engines field:
+      - run: npm install --production --engine-strict --ignore-scripts --no-package-lock
+      # Clean up the production install, before installing dev/production:
+      - run: rm -rf node_modules
       - run: npm install
       - run: npm test
       - name: coverage
@@ -29,7 +35,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
-          node-version: 12
+          node-version: 13
       - run: npm install
       - run: npm test
       - name: coverage
@@ -43,7 +49,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
-          node-version: 12
+          node-version: 13
       - run: npm install
       - run: npm run lint
   docs:
@@ -52,6 +58,6 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
-          node-version: 12
+          node-version: 13
       - run: npm install
       - run: npm run docs-test