chore(cli): drop nodejs 8 from ci

.travis.yml

@@ -5,7 +5,6 @@ language: node_js
 node_js:
     - "12"
     - "10"
-    - "8"
 cache:
     directories:
         - ~/.npm
@@ -20,9 +19,6 @@ matrix:
         - os: linux
           node_js: "10"
           env: JOB_PART=integration
-        - os: linux
-          node_js: "8"
-          env: JOB_PART=integration
 
 before_install:
     - "[[ $(node -v) =~ ^v9.*$ ]] || npm install -g npm@latest" # skipped when using node 9

azure-pipelines-template.yml

@@ -8,9 +8,7 @@ jobs:
         node-12:
           node_version: ^12.0.0
         node-10:
-          node_version: ^10.10.0
-        node-8:
-          node_version: ^8.12.0
+          node_version: ^10.13.0
     steps:
       - task: NodeTool@0
         inputs:

package.json

@@ -12,7 +12,7 @@
   },
   "main": "cli.js",
   "engines": {
-    "node": ">=8.0.0"
+    "node": ">=10.13.0"
   },
   "keywords": [
     "webpack",

test/node/node.test.js

@@ -6,7 +6,7 @@ const { run, extractSummary } = require('../utils/test-utils');
 describe('node flags', () => {
     it('is able to options flags to node js', done => {
         const { stdout, stderr } = run(__dirname, ['--node-args', `--require=${resolve(__dirname, 'bootstrap.js')}`, '--node-args', `-r ${resolve(__dirname, 'bootstrap2.js')}`, '--output', './bin/[name].bundle.js'], false);
-        expect(stderr).toContain('');
+        expect(stderr).toBe('');
         expect(stdout).toContain('---from bootstrap.js---');
         expect(stdout).toContain('---from bootstrap2.js---');
         const summary = extractSummary(stdout);