Babel 7 alpha (#112)

.travis.yml

@@ -2,5 +2,5 @@ sudo: false
 language: node_js
 node_js:
   - 'stable'
-  - '0.12'
-  - '0.10'
+  - '6'
+  - '4'

index.js

@@ -1,11 +1,10 @@
 'use strict';
-var path = require('path');
-var gutil = require('gulp-util');
-var through = require('through2');
-var applySourceMap = require('vinyl-sourcemaps-apply');
-var objectAssign = require('object-assign');
-var replaceExt = require('replace-ext');
-var babel = require('babel-core');
+const path = require('path');
+const gutil = require('gulp-util');
+const through = require('through2');
+const applySourceMap = require('vinyl-sourcemaps-apply');
+const replaceExt = require('replace-ext');
+const babel = require('babel-core');
 
 function replaceExtension(fp) {
 	return path.extname(fp) ? replaceExt(fp, '.js') : fp;
@@ -26,27 +25,29 @@ module.exports = function (opts) {
 		}
 
 		try {
-			var fileOpts = objectAssign({}, opts, {
+			const fileOpts = Object.assign({}, opts, {
 				filename: file.path,
 				filenameRelative: file.relative,
 				sourceMap: Boolean(file.sourceMap),
 				sourceFileName: file.relative,
 				sourceMapTarget: file.relative
 			});
 
-			var res = babel.transform(file.contents.toString(), fileOpts);
+			const res = babel.transform(file.contents.toString(), fileOpts);
 
-			if (file.sourceMap && res.map) {
-				res.map.file = replaceExtension(res.map.file);
-				applySourceMap(file, res.map);
-			}
+			if (res !== null) {
+				if (file.sourceMap && res.map) {
+					res.map.file = replaceExtension(res.map.file);
+					applySourceMap(file, res.map);
+				}
 
-			if (!res.ignored) {
-				file.contents = new Buffer(res.code);
-				file.path = replaceExtension(file.path);
-			}
+				if (!res.ignored) {
+					file.contents = new Buffer(res.code); // eslint-disable-line unicorn/no-new-buffer
+					file.path = replaceExtension(file.path);
+				}
 
-			file.babel = res.metadata;
+				file.babel = res.metadata;
+			}
 
 			this.push(file);
 		} catch (err) {

package.json

@@ -10,7 +10,7 @@
     "url": "sindresorhus.com"
   },
   "engines": {
-    "node": ">=0.10.0"
+    "node": ">=4"
   },
   "scripts": {
     "test": "xo && mocha"
@@ -34,17 +34,16 @@
     "compiler"
   ],
   "dependencies": {
-    "babel-core": "^6.23.1",
+    "babel-core": "7.0.0-alpha.18",
     "gulp-util": "^3.0.0",
-    "object-assign": "^4.0.1",
     "replace-ext": "0.0.1",
     "through2": "^2.0.0",
     "vinyl-sourcemaps-apply": "^0.2.0"
   },
   "devDependencies": {
-    "babel-plugin-transform-es2015-arrow-functions": "^6.0.2",
-    "babel-plugin-transform-es2015-block-scoping": "^6.0.9",
-    "babel-plugin-transform-es2015-classes": "^6.0.8",
+    "babel-plugin-transform-es2015-arrow-functions": "7.0.0-alpha.18",
+    "babel-plugin-transform-es2015-block-scoping": "7.0.0-alpha.18",
+    "babel-plugin-transform-es2015-classes": "7.0.0-alpha.18",
     "gulp-sourcemaps": "^1.1.1",
     "mocha": "*",
     "xo": "*"

test.js

@@ -1,16 +1,16 @@
 'use strict';
-var path = require('path');
-var assert = require('assert');
-var gutil = require('gulp-util');
-var sourceMaps = require('gulp-sourcemaps');
-var babel = require('./');
-
-it('should transpile with Babel', function (cb) {
-	var stream = babel({
+const path = require('path');
+const assert = require('assert');
+const gutil = require('gulp-util');
+const sourceMaps = require('gulp-sourcemaps');
+const babel = require('./');
+
+it('should transpile with Babel', cb => {
+	const stream = babel({
 		plugins: ['transform-es2015-block-scoping']
 	});
 
-	stream.on('data', function (file) {
+	stream.on('data', file => {
 		assert(/var foo/.test(file.contents.toString()), file.contents.toString());
 		assert.equal(file.relative, 'fixture.js');
 	});
@@ -21,25 +21,25 @@ it('should transpile with Babel', function (cb) {
 		cwd: __dirname,
 		base: path.join(__dirname, 'fixture'),
 		path: path.join(__dirname, 'fixture/fixture.jsx'),
-		contents: new Buffer('let foo;')
+		contents: Buffer.from('let foo;')
 	}));
 
 	stream.end();
 });
 
-it('should generate source maps', function (cb) {
-	var init = sourceMaps.init();
-	var write = sourceMaps.write();
+it('should generate source maps', cb => {
+	const init = sourceMaps.init();
+	const write = sourceMaps.write();
 	init
 		.pipe(babel({
 			plugins: ['transform-es2015-arrow-functions']
 		}))
 		.pipe(write);
 
-	write.on('data', function (file) {
+	write.on('data', file => {
 		assert.deepEqual(file.sourceMap.sources, ['fixture.es2015']);
 		assert.strictEqual(file.sourceMap.file, 'fixture.js');
-		var contents = file.contents.toString();
+		const contents = file.contents.toString();
 		assert(/function/.test(contents));
 		assert(/sourceMappingURL/.test(contents));
 		cb();
@@ -49,26 +49,26 @@ it('should generate source maps', function (cb) {
 		cwd: __dirname,
 		base: path.join(__dirname, 'fixture'),
 		path: path.join(__dirname, 'fixture/fixture.es2015'),
-		contents: new Buffer('[].map(v => v + 1)'),
+		contents: Buffer.from('[].map(v => v + 1)'),
 		sourceMap: ''
 	}));
 
 	init.end();
 });
 
-it('should generate source maps for file in nested folder', function (cb) {
-	var init = sourceMaps.init();
-	var write = sourceMaps.write();
+it('should generate source maps for file in nested folder', cb => {
+	const init = sourceMaps.init();
+	const write = sourceMaps.write();
 	init
 		.pipe(babel({
 			plugins: ['transform-es2015-arrow-functions']
 		}))
 		.pipe(write);
 
-	write.on('data', function (file) {
+	write.on('data', file => {
 		assert.deepEqual(file.sourceMap.sources, ['nested/fixture.es2015']);
 		assert.strictEqual(file.sourceMap.file, 'nested/fixture.js');
-		var contents = file.contents.toString();
+		const contents = file.contents.toString();
 		assert(/function/.test(contents));
 		assert(/sourceMappingURL/.test(contents));
 		cb();
@@ -78,19 +78,19 @@ it('should generate source maps for file in nested folder', function (cb) {
 		cwd: __dirname,
 		base: path.join(__dirname, 'fixture'),
 		path: path.join(__dirname, 'fixture/nested/fixture.es2015'),
-		contents: new Buffer('[].map(v => v + 1)'),
+		contents: Buffer.from('[].map(v => v + 1)'),
 		sourceMap: ''
 	}));
 
 	init.end();
 });
 
-it('should list used helpers in file.babel', function (cb) {
-	var stream = babel({
+it('should list used helpers in file.babel', cb => {
+	const stream = babel({
 		plugins: ['transform-es2015-classes']
 	});
 
-	stream.on('data', function (file) {
+	stream.on('data', file => {
 		assert.deepEqual(file.babel.usedHelpers, ['classCallCheck']);
 	});
 
@@ -100,48 +100,48 @@ it('should list used helpers in file.babel', function (cb) {
 		cwd: __dirname,
 		base: path.join(__dirname, 'fixture'),
 		path: path.join(__dirname, 'fixture/fixture.js'),
-		contents: new Buffer('class MyClass {};')
+		contents: Buffer.from('class MyClass {};')
 	}));
 
 	stream.end();
 });
 
-it('should not rename ignored files', function (cb) {
-	var stream = babel({
-		ignore: /fixture/
+it('should not rename ignored files', cb => {
+	const stream = babel({
+		ignore: [/fixture/]
 	});
 
-	var inputFile = {
+	const inputFile = {
 		cwd: __dirname
 	};
 
 	inputFile.base = path.join(inputFile.cwd, 'fixture');
 	inputFile.basename = 'fixture.jsx';
 	inputFile.path = path.join(inputFile.base, inputFile.basename);
-	inputFile.contents = new Buffer(';');
+	inputFile.contents = Buffer.from(';');
 
 	stream
-		.on('data', function (file) {
+		.on('data', file => {
 			assert.equal(file.relative, inputFile.basename);
 		})
 		.on('end', cb)
 		.end(new gutil.File(inputFile));
 });
 
-it('should not rename files without an extension', function (cb) {
-	var stream = babel();
+it('should not rename files without an extension', cb => {
+	const stream = babel();
 
-	var inputFile = {
+	const inputFile = {
 		cwd: __dirname
 	};
 
 	inputFile.base = path.join(inputFile.cwd, 'bin');
 	inputFile.basename = 'app';
 	inputFile.path = path.join(inputFile.base, inputFile.basename);
-	inputFile.contents = new Buffer(';');
+	inputFile.contents = Buffer.from(';');
 
 	stream
-		.on('data', function (file) {
+		.on('data', file => {
 			assert.equal(file.relative, inputFile.basename);
 		})
 		.on('end', cb)