From 7e0c259d20844e102fd5aa1f213bfd56dc2a1540 Mon Sep 17 00:00:00 2001
From: Ben Chauvette <bdchauvette@gmail.com>
Date: Sat, 24 Sep 2016 08:09:57 -0400
Subject: [PATCH 1/2] [vinyl] Add test for File.isVinyl

---
 vinyl/vinyl-tests.ts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/vinyl/vinyl-tests.ts b/vinyl/vinyl-tests.ts
index 1d39646b11..387bc0ce9a 100644
--- a/vinyl/vinyl-tests.ts
+++ b/vinyl/vinyl-tests.ts
@@ -121,6 +121,19 @@ describe('File', () => {
 
 	});
 
+	describe('File.isVinyl()', () => {
+		it('should return true when an object is a Vinyl file', done => {
+			var file = new File();
+			File.isVinyl(file).should.equal(true);
+			done();
+		});
+
+		it('should return false when an object is not a Vinyl file', done => {
+			File.isVinyl({}).should.equal(false);
+			done();
+		});
+	});
+
 	describe('isBuffer()', () => {
 		it('should return true when the contents are a Buffer', done => {
 			var val = new Buffer("test");

From 5f34eea83b427afc487968265dc6b5884aac5f33 Mon Sep 17 00:00:00 2001
From: Ben Chauvette <bdchauvette@gmail.com>
Date: Sat, 24 Sep 2016 08:13:22 -0400
Subject: [PATCH 2/2] [vinyl] Add File.isCustomProp

See gulpjs/vinyl@7b01e75
---
 vinyl/vinyl-tests.ts | 12 ++++++++++++
 vinyl/vinyl.d.ts     |  9 +++++++--
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/vinyl/vinyl-tests.ts b/vinyl/vinyl-tests.ts
index 387bc0ce9a..49de15b54d 100644
--- a/vinyl/vinyl-tests.ts
+++ b/vinyl/vinyl-tests.ts
@@ -134,6 +134,18 @@ describe('File', () => {
 		});
 	});
 
+	describe('File.isCustomProp()', () => {
+		it('should return true when a File property is not managed internally', done => {
+			File.isCustomProp('foobar').should.equal(true);
+			done();
+		});
+
+		it('should return false when a File property is managed internally', done => {
+			File.isCustomProp('cwd').should.equal(false);
+			done();
+		});
+	});
+
 	describe('isBuffer()', () => {
 		it('should return true when the contents are a Buffer', done => {
 			var val = new Buffer("test");
diff --git a/vinyl/vinyl.d.ts b/vinyl/vinyl.d.ts
index bcee5c6614..9861cf1b3c 100644
--- a/vinyl/vinyl.d.ts
+++ b/vinyl/vinyl.d.ts
@@ -1,5 +1,5 @@
-// Type definitions for vinyl 1.1.0
-// Project: https://github.com/wearefractal/vinyl
+// Type definitions for vinyl 1.2.0
+// Project: https://github.com/gulpjs/vinyl
 // Definitions by: vvakame <https://github.com/vvakame/>, jedmao <https://github.com/jedmao>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
@@ -140,6 +140,11 @@ declare module "vinyl" {
 		 * Checks if a given object is a vinyl file.
 		 */
 		public static isVinyl(obj: any): boolean;
+
+		/**
+		 * Checks if a property is not managed internally.
+		 */
+		public static isCustomProp(name: string): boolean;
 	}
 
 	export = File;