Use require.resolve() instead of <rootDir> in @wordpress/jest-preset-…

…default (#19957)

* use require.resolve() instead of <rootDir>

* formatted

packages/jest-preset-default/jest-preset.js

@@ -1,31 +1,26 @@
 module.exports = {
 	moduleNameMapper: {
-		'\\.(scss|css)$':
-			'<rootDir>/node_modules/@wordpress/jest-preset-default/scripts/style-mock.js',
+		'\\.(scss|css)$': require.resolve( '@wordpress/jest-preset-default/scripts/style-mock.js' ),
 	},
 	modulePaths: [ '<rootDir>' ],
-	setupFiles: [
-		'<rootDir>/node_modules/@wordpress/jest-preset-default/scripts/setup-globals.js',
-	],
+	setupFiles: [ require.resolve( '@wordpress/jest-preset-default/scripts/setup-globals.js' ) ],
 	setupFilesAfterEnv: [
-		'<rootDir>/node_modules/@wordpress/jest-preset-default/scripts/setup-test-framework.js',
-	],
-	snapshotSerializers: [ '<rootDir>/node_modules/enzyme-to-json/serializer.js' ],
-	testMatch: [
-		'**/__tests__/**/*.[jt]s',
-		'**/test/*.[jt]s',
-		'**/?(*.)test.[jt]s',
+		require.resolve( '@wordpress/jest-preset-default/scripts/setup-test-framework.js' ),
 	],
+	snapshotSerializers: [ require.resolve( 'enzyme-to-json/serializer.js' ) ],
+	testMatch: [ '**/__tests__/**/*.[jt]s', '**/test/*.[jt]s', '**/?(*.)test.[jt]s' ],
 	testPathIgnorePatterns: [ '/node_modules/', '/wordpress/' ],
 	timers: 'fake',
 	transform: {
-		'^.+\\.[jt]sx?$': '<rootDir>/node_modules/babel-jest',
+		'^.+\\.[jt]sx?$': require.resolve( 'babel-jest' ),
 	},
 	verbose: true,
 	reporters:
-		'TRAVIS' in process.env && 'CI' in process.env ?
-			[
-				'../../../@wordpress/jest-preset-default/scripts/travis-fold-passes-reporter.js',
-			] :
-			undefined,
+		'TRAVIS' in process.env && 'CI' in process.env
+			? [
+					require.resolve(
+						'@wordpress/jest-preset-default/scripts/travis-fold-passes-reporter.js'
+					),
+			  ]
+			: undefined,
 };