Add Prettier NPM dependency to packages/scripts and top-level

.prettierrc.js

@@ -0,0 +1,3 @@
+// Import the default config file and expose it in the project root.
+// Useful for editor integrations.
+module.exports = require( '@wordpress/scripts/config/.prettierrc.js' );

package.json

@@ -146,6 +146,7 @@
 		"node-watch": "0.6.0",
 		"postcss": "7.0.13",
 		"postcss-loader": "3.0.0",
+		"prettier": "npm:[email protected]",
 		"progress": "2.0.3",
 		"react": "16.9.0",
 		"react-dom": "16.9.0",
@@ -186,6 +187,7 @@
 		"fixtures:server-registered": "packages/env/bin/wp-env run wordpress ./wp-content/plugins/gutenberg/bin/get-server-blocks.php > test/integration/full-content/server-registered.json",
 		"fixtures:generate": "npm run fixtures:server-registered && cross-env GENERATE_MISSING_FIXTURES=y npm run test-unit",
 		"fixtures:regenerate": "npm run fixtures:clean && npm run fixtures:generate",
+		"format-js": "wp-scripts format-js",
 		"lint": "concurrently \"npm run lint-js\" \"npm run lint-pkg-json\" \"npm run lint-css\" \"npm run lint-types\"",
 		"lint-js": "wp-scripts lint-js",
 		"lint-js:fix": "npm run lint-js -- --fix",

packages/scripts/config/.prettierrc.js

@@ -0,0 +1,12 @@
+module.exports = {
+	useTabs: true,
+	tabWidth: 2,
+	printWidth: 100,
+	singleQuote: true,
+	trailingComma: 'es5',
+	bracketSpacing: true,
+	parenSpacing: true,
+	jsxBracketSameLine: false,
+	semi: true,
+	arrowParens: 'always',
+};

packages/scripts/package.json

@@ -45,6 +45,7 @@
 		"command-exists": "^1.2.8",
 		"cross-spawn": "^5.1.0",
 		"decompress-zip": "^0.2.2",
+		"dir-glob": "^3.0.1",
 		"eslint": "^6.1.0",
 		"eslint-plugin-markdown": "1.0.1",
 		"jest": "^24.9.0",