✨ change default node version of some rules to 8

docs/rules/no-unsupported-features/es-builtins.md

@@ -25,12 +25,12 @@ For example of `package.json`:
     "name": "your-module",
     "version": "1.0.0",
     "engines": {
-        "node": ">=6.0.0"
+        "node": ">=8.0.0"
     }
 }
 ```
 
-If you omit the [engines] field, this rule chooses `>=6.0.0` as the configured Node.js version since `6` is the minimum version the community is maintaining (see also [Node.js Release Working Group](https://github.com/nodejs/Release#readme)).
+If you omit the [engines] field, this rule chooses `>=8.0.0` as the configured Node.js version since `8` is the minimum version the community is maintaining (see also [Node.js Release Working Group](https://github.com/nodejs/Release#readme)).
 
 ### Options
 

docs/rules/no-unsupported-features/es-syntax.md

@@ -28,19 +28,19 @@ For example of `package.json`:
     "name": "your-module",
     "version": "1.0.0",
     "engines": {
-        "node": ">=6.0.0"
+        "node": ">=8.0.0"
     }
 }
 ```
 
-If you omit the [engines] field, this rule chooses `>=6.0.0` as the configured Node.js version since `6` is the minimum version the community is maintaining (see also [Node.js Release Working Group](https://github.com/nodejs/Release#readme)).
+If you omit the [engines] field, this rule chooses `>=8.0.0` as the configured Node.js version since `8` is the minimum version the community is maintaining (see also [Node.js Release Working Group](https://github.com/nodejs/Release#readme)).
 
 ### Options
 
 ```json
 {
     "node/no-unsupported-features/es-syntax": ["error", {
-        "version": ">=6.0.0",
+        "version": ">=8.0.0",
         "ignores": []
     }]
 }

lib/util/get-configured-node-version.js

@@ -23,7 +23,7 @@ function getEnginesNode(filename) {
  *
  * 1. Parse a given version then return it if it's valid.
  * 2. Look package.json up and parse `engines.node` then return it if it's valid.
- * 3. Return `>=6.0.0`.
+ * 3. Return `>=8.0.0`.
  *
  * @param {string|undefined} version The version range text.
  * @param {string} filename The path to the current linting file.
@@ -34,6 +34,6 @@ module.exports = function getConfiguredNodeVersion(version, filename) {
     return (
         getSemverRange(version) ||
         getEnginesNode(filename) ||
-        getSemverRange(">=6.0.0")
+        getSemverRange(">=8.0.0")
     )
 }