drop node 8

.eslintrc.js

@@ -0,0 +1,29 @@
+module.exports = {
+  root: true,
+  parserOptions: {
+    ecmaVersion: 2020,
+    sourceType: 'module',
+  },
+  plugins: ['node', 'prettier', '@typescript-eslint'],
+  parser: '@typescript-eslint/parser',
+  extends: ['eslint:recommended', 'plugin:node/recommended', 'plugin:prettier/recommended'],
+  env: {
+    node: true,
+  },
+  rules: {
+    'node/shebang': 'off',
+  },
+  overrides: [
+    {
+      env: { mocha: true },
+      files: '**/*-test.ts',
+      plugins: ['mocha'],
+      extends: ['plugin:mocha/recommended'],
+      rules: {
+        'node/no-unpublished-require': 'off',
+        'mocha/no-setup-in-describe': 'off',
+        'mocha/no-hooks-for-single-case': 'off',
+      },
+    },
+  ],
+};

.prettierrc.js

@@ -0,0 +1,7 @@
+module.exports = {
+  singleQuote: true,
+  trailingComma: 'all',
+  arrowParens: 'avoid',
+  printWidth: 100,
+  endOfLine: 'auto',
+};

.travis.yml

@@ -3,7 +3,6 @@ dist: trusty
 
 language: node_js
 node_js:
-  - '8'
   - '10'
   - '12'
 

appveyor.yml

@@ -4,7 +4,6 @@
 environment:
   MOCHA_REPORTER: 'mocha-appveyor-reporter'
   matrix:
-    - nodejs_version: '8'
     - nodejs_version: '10'
     - nodejs_version: '12'
 

package.json

@@ -43,6 +43,6 @@
     "lint": "eslint ."
   },
   "engines": {
-    "node": "8.* || 10.* || >= 12"
+    "node": "10.* || >= 12"
   }
 }