Drop support for old Nodes (#17)

Node 18 is the earliest version that we support across our ecosystem,
and anything earlier is EOL, so it doesn't make sense to continue to
support it. Using old Nodes is also preventing us from upgrading
dependencies to address security vulnerabilities.

Also update the lint-build-test GitHub workflow by running `npm ci`
instead of just `npm i`. This ensures that the lockfile is not updated,
which is not the case with just `npm i`.

Author: mcmire

.github/workflows/build-lint-test.yml

@@ -4,67 +4,86 @@ on:
   workflow_call:
 
 jobs:
+  prepare:
+    name: Prepare
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [18.x, 20.x, 22.x]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: '.nvmrc'
+      - name: Install dependencies
+        run: npm ci
+
   build:
     name: Build
+    needs: prepare
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [10.x, 12.x, 14.x, 16.x, 18.x, 20.x]
+        node-version: [22.x]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
-          node-version: ${{ matrix.node-version }}
-          cache: 'npm'
-      - run: npm i -g npm@6
-      - run: npm i
+          node-version-file: '.nvmrc'
+      - run: npm ci
       - run: npm run build
       - name: Require clean working directory
         shell: bash
         run: |
-          if ! git diff --exit-code -- . ':!dist/*.map'; then
+          if ! git diff --exit-code; then
             echo "Working tree dirty at end of job"
             exit 1
           fi
 
   lint:
     name: Lint
+    needs: prepare
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [12.x]
+        node-version: [22.x]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
-          node-version: ${{ matrix.node-version }}
-          cache: 'npm'
-      - run: npm i -g npm@6
-      - run: npm i
+          node-version-file: '.nvmrc'
+      - run: npm ci
       - run: npm run lint
+      - name: Require clean working directory
+        shell: bash
+        run: |
+          if ! git diff --exit-code; then
+            echo "Working tree dirty at end of job"
+            exit 1
+          fi
 
   test:
     name: Test
+    needs: prepare
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [10.x, 12.x, 14.x, 16.x, 18.x, 20.x]
+        node-version: [18.x, 20.x, 22.x]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
-          node-version: ${{ matrix.node-version }}
-          cache: 'npm'
-      - run: npm i -g npm@6
-      - run: npm i
+          node-version-file: '.nvmrc'
+      - run: npm ci
       - run: npm run test
       - name: Require clean working directory
         shell: bash
         run: |
-          if ! git diff --exit-code -- . ':!dist/*.map' ':!package-lock.json' ; then
+          if ! git diff --exit-code; then
             echo "Working tree dirty at end of job"
             exit 1
           fi

.nvmrc

@@ -1 +1 @@
-v12
+lts/*