Set up CI with Azure Pipelines

This is a trial to use Azure Pipelines [skip ci]

azure-pipelines.yml

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+# Node.js
+# Build a general Node.js project with npm.
+# Add steps that analyze code, save build artifacts, deploy, and more:
+# https://docs.microsoft.com/azure/devops/pipelines/languages/javascript
+
+trigger:
+  - master
+
+jobs:
+  - job: lint
+    displayName: Lint code
+    pool:
+      vmImage: Ubuntu-16.04
+    steps:
+      - task: NodeTool@0
+        displayName: Install Node.js
+        inputs:
+          versionSpec: 12.x
+      - script: npm install
+        displayName: Install packages
+      - script: npm run -s lint
+        displayName: Lint code
+
+  - job: tests_on_linux
+    displayName: Test on Linux
+    pool:
+      vmImage: 'Ubuntu-16.04'
+    strategy:
+      matrix:
+        node_12_and_eslint_6:
+          node_version: 12.x
+          eslint_version: ^6.0.0-rc.0
+        node_12_and_eslint_5:
+          node_version: 12.x
+          eslint_version: ^5.16.0
+        node_10:
+          node_version: 10.x
+          eslint_version: ^5.16.0
+        node_8:
+          node_version: 8.x
+          eslint_version: ^5.16.0
+    steps:
+      - task: NodeTool@0
+        displayName: Install Node.js $(node_version)
+        inputs:
+          versionSpec: $(node_version)
+      - script: npm install; npm install --no-save async eslint@$(eslint_version)
+        displayName: Install packages
+      - script: npm test
+        displayName: Test
+
+  - job: tests_on_windows
+    displayName: Test on Windows
+    pool:
+      vmImage: 'Windows-2019'
+    steps:
+      - task: NodeTool@0
+        displayName: Install Node.js
+        inputs:
+          versionSpec: 12.x
+      - script: npm install; npm install --no-save async
+        displayName: Install packages
+      - script: npm test
+        displayName: Test
+
+  - job: tests_on_macos
+    displayName: Test on macOS
+    pool:
+      vmImage: 'macOS-10.14'
+    steps:
+      - task: NodeTool@0
+        displayName: Install Node.js
+        inputs:
+          versionSpec: 12.x
+      - script: npm install; npm install --no-save async
+        displayName: Install packages
+      - script: npm test
+        displayName: Test