[actions] reuse common workflows

.github/workflows/node-aught.yml

@@ -0,0 +1,19 @@
+name: 'Tests: node.js < 10'
+
+on: [pull_request, push]
+
+jobs:
+  tests:
+    name: 'node < 10'
+    uses: ljharb/actions/.github/workflows/node.yml@main
+    with:
+      range: '< 10'
+      type: minors
+      command: npm run tests-only
+
+  node:
+    - name: 'node < 10'
+    needs: [tests]
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo tests completed'

.github/workflows/node-pretest.yml

@@ -3,24 +3,5 @@ name: 'Tests: pretest/posttest'
 on: [pull_request, push]
 
 jobs:
-  pretest:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-      - uses: ljharb/actions/node/install@main
-        name: 'nvm install lts/* && npm install'
-        with:
-          node-version: 'lts/*'
-      - run: npm run pretest
-
-  posttest:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-      - uses: ljharb/actions/node/install@main
-        name: 'nvm install lts/* && npm install'
-        with:
-          node-version: 'lts/*'
-      - run: npm run posttest
+  tests:
+    uses: ljharb/actions/.github/workflows/pretest.yml@main

.github/workflows/node-tens.yml

@@ -0,0 +1,19 @@
+name: 'Tests: node.js >= 10'
+
+on: [pull_request, push]
+
+jobs:
+  tests:
+    name: 'node >= 10'
+    uses: ljharb/actions/.github/workflows/node.yml@main
+    with:
+      range: '>= 10'
+      type: minors
+      command: npm run tests-only
+
+  node:
+    - name: 'node >= 10'
+    needs: [tests]
+    runs-on: ubuntu-latest
+    steps:
+      - run: 'echo tests completed'