From 12559766726b088e5d854a2397d0f57b92f16756 Mon Sep 17 00:00:00 2001
From: Emily Marigold Klassen <forivall@gmail.com>
Date: Fri, 21 Jun 2019 13:51:03 -0700
Subject: [PATCH] Fix vinyl-fs "Invalid glob argument" error

Fixes the following error
```
Error: Invalid glob argument:
    at Object.src (/Users/emilyklassen/Code/mcs-repos/monorepo/node_modules/vinyl-fs/lib/src/index.js:20:11)
```
---
 lib/project.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/project.ts b/lib/project.ts
index a9674a51..6d039394 100644
--- a/lib/project.ts
+++ b/lib/project.ts
@@ -132,6 +132,11 @@ function src(this: Project) {
 		console.log(error.messageText);
 	}
 
+	if (fileNames.length === 0) {
+		// Empty stream required as vinyl-fs@3 no longer supports "allowEmpty"
+		return new stream.Readable({objectMode: true, read() { this.push(null) }})
+	}
+	
 	if (base === undefined) base = utils.getCommonBasePathOfArray(
 		fileNames.filter(file => file.substr(-5) !== ".d.ts")
 			.map(file => path.dirname(file)));