Scripts: Add check-engines script to the package (#12721)

* Scripts: Add check-engines script to the package

* Update packages/scripts/CHANGELOG.md

Co-Authored-By: gziolo <grzegorz@gziolo.pl>

* Update packages/scripts/README.md

Co-Authored-By: gziolo <grzegorz@gziolo.pl>

* Update minimal node version to 10.x

Co-Authored-By: gziolo <grzegorz@gziolo.pl>

package.json

@@ -10,10 +10,6 @@
 		"WordPress",
 		"editor"
 	],
-	"engines": {
-		"node": ">=8.0.0",
-		"npm": ">=6.0.0"
-	},
 	"dependencies": {
 		"@wordpress/a11y": "file:packages/a11y",
 		"@wordpress/annotations": "file:packages/annotations",
@@ -72,7 +68,6 @@
 		"autoprefixer": "8.2.0",
 		"babel-loader": "8.0.0",
 		"chalk": "2.4.1",
-		"check-node-version": "3.1.1",
 		"concurrently": "3.5.0",
 		"copy-webpack-plugin": "4.5.2",
 		"core-js": "2.5.7",
@@ -145,7 +140,7 @@
 		"prebuild:packages": "npm run clean:packages && lerna run build && cross-env INCLUDE_PACKAGES=babel-plugin-import-jsx-pragma,postcss-themes,jest-console SKIP_JSX_PRAGMA_TRANSFORM=1 node ./bin/packages/build.js",
 		"build:packages": "cross-env EXCLUDE_PACKAGES=babel-plugin-import-jsx-pragma,jest-console,postcss-themes node ./bin/packages/build.js",
 		"build": "npm run build:packages && cross-env NODE_ENV=production webpack",
-		"check-engines": "check-node-version --package",
+		"check-engines": "wp-scripts check-engines",
 		"check-licenses": "concurrently \"wp-scripts check-licenses --prod --gpl2\" \"wp-scripts check-licenses --dev\"",
 		"precheck-local-changes": "npm run docs:build",
 		"check-local-changes": "( git diff -U0 | xargs -0 node bin/process-git-diff ) || ( echo \"There are local uncommitted changes after one or both of 'npm install' or 'npm run docs:build'!\" && exit 1 );",

packages/scripts/CHANGELOG.md

@@ -1,3 +1,9 @@
+## 2.5.0 (Unreleased)
+
+### New Feature
+
+- Added support for `check-engines` script ([#12721](https://github.com/WordPress/gutenberg/pull/12721))
+
 ## 2.4.4 (2018-11-20)
 
 ## 2.4.3 (2018-11-09)

packages/scripts/README.md

@@ -19,6 +19,7 @@ _Example:_
 ```json
 {
 	"scripts": {
+		"check-engines": "wp-scripts check-engines",
 		"lint:pkg-json": "wp-scripts lint-pkg-json .",
 		"test": "wp-scripts test-unit-js"
 	}
@@ -27,6 +28,24 @@ _Example:_
 
 ## Available Scripts
 
+### `check-engines`
+
+Check if the current `node`, `npm` (or `yarn`) versions match the given [semantic version](https://semver.org/) ranges. If the given version is not satisfied, information about installing the needed version is printed and the program exits with an error code. It uses [check-node-version](https://www.npmjs.com/package/check-node-version) behind the scenes with the default configuration provided. You can specify your own ranges as described in [check-node-version docs](https://www.npmjs.com/package/check-node-version).
+
+_Example:_
+
+```json
+{
+	"scripts": {
+		"check-engines": "wp-scripts check-engines"
+	}
+}
+```
+
+This is how you execute the script with presented setup:
+* `npm run check-engines` - checks installed version of `node` and `npm`.
+
+
 ### `wp-scripts lint-js`
 
 Helps enforce coding style guidelines for your JavaScript files. It uses [eslint](https://eslint.org/) with no rules provided (we plan to add zero config support in the near future). You can specify your own rules as described in [eslint docs](https://eslint.org/docs/rules/).

packages/scripts/package.json

@@ -36,6 +36,7 @@
 		"@wordpress/npm-package-json-lint-config": "file:../npm-package-json-lint-config",
 		"babel-eslint": "8.0.3",
 		"chalk": "^2.4.1",
+		"check-node-version": "^3.1.1",
 		"cross-spawn": "^5.1.0",
 		"eslint": "^4.19.1",
 		"jest": "^23.6.0",

packages/scripts/scripts/check-engines.js

@@ -0,0 +1,34 @@
+/**
+ * External dependencies
+ */
+const { sync: spawn } = require( 'cross-spawn' );
+const { sync: resolveBin } = require( 'resolve-bin' );
+
+/**
+ * Internal dependencies
+ */
+const {
+	getCliArgs,
+	hasCliArg,
+} = require( '../utils' );
+
+const args = getCliArgs();
+
+const hasConfig = hasCliArg( '--package' ) ||
+	hasCliArg( '--node' ) ||
+	hasCliArg( '--npm' ) ||
+	hasCliArg( '--yarn' );
+const config = ! hasConfig ?
+	[
+		'--node', '>=10.0.0',
+		'--npm', '>=6.0.0',
+	] :
+	[];
+
+const result = spawn(
+	resolveBin( 'check-node-version' ),
+	[ ...config, ...args ],
+	{ stdio: 'inherit' }
+);
+
+process.exit( result.status );