chore!: drop support of end-of-life node releases (8, 11, 13) (#6052)

Author: haoqunjiang

packages/@vue/cli-service/package.json

@@ -120,6 +120,6 @@
     "access": "public"
   },
   "engines": {
-    "node": ">=8"
+    "node": "^10.12.0 || ^12.0.0 || >= 14.0.0"
   }
 }

packages/@vue/cli-ui/package.json

@@ -114,7 +114,7 @@
   "license": "MIT",
   "author": "Guillaume Chau",
   "engines": {
-    "node": ">=8"
+    "node": "^10.12.0 || ^12.0.0 || >= 14.0.0"
   },
   "publishConfig": {
     "access": "public"

packages/@vue/cli/lib/Creator.js

@@ -28,7 +28,6 @@ const {
 const {
   chalk,
   execa,
-  semver,
 
   log,
   warn,
@@ -186,15 +185,6 @@ module.exports = class Creator extends EventEmitter {
       })
     }
 
-    if (packageManager === 'yarn' && semver.satisfies(process.version, '8.x')) {
-      // Vue CLI 4.x should support Node 8.x,
-      // but some dependenices already bumped `engines` field to Node 10
-      // and Yarn treats `engines` field too strictly
-      await writeFileTree(context, {
-        '.yarnrc': '# Hotfix for Node 8.x\n--install.ignore-engines true\n'
-      })
-    }
-
     // intilaize git repository before installing deps
     // so that vue-cli-service can setup git hooks.
     const shouldInitGit = this.shouldInitGit(cliOptions)

packages/@vue/cli/package.json

@@ -62,6 +62,6 @@
     "yaml-front-matter": "^4.1.0"
   },
   "engines": {
-    "node": ">=8.9"
+    "node": "^10.12.0 || ^12.0.0 || >= 14.0.0"
   }
 }