From bd2b15fc4143a5d54ee7a13c75b6420de9122f0d Mon Sep 17 00:00:00 2001
From: Rich Harris <richard.a.harris@gmail.com>
Date: Sat, 3 Jun 2017 14:51:21 -0400
Subject: [PATCH] add a watch option

---
 src/rollup.js                         | 3 ++-
 test/function/watch-option/_config.js | 6 ++++++
 test/function/watch-option/main.js    | 1 +
 test/test.js                          | 2 +-
 4 files changed, 10 insertions(+), 2 deletions(-)
 create mode 100644 test/function/watch-option/_config.js
 create mode 100644 test/function/watch-option/main.js

diff --git a/src/rollup.js b/src/rollup.js
index f366848dbd1..a017e9346a1 100644
--- a/src/rollup.js
+++ b/src/rollup.js
@@ -39,7 +39,8 @@ const ALLOWED_KEYS = [
 	'sourceMapFile',
 	'targets',
 	'treeshake',
-	'useStrict'
+	'useStrict',
+	'watch'
 ];
 
 function checkOptions ( options ) {
diff --git a/test/function/watch-option/_config.js b/test/function/watch-option/_config.js
new file mode 100644
index 00000000000..f5399ef9a08
--- /dev/null
+++ b/test/function/watch-option/_config.js
@@ -0,0 +1,6 @@
+module.exports = {
+	description: 'expects watch option',
+	options: {
+		watch: {}
+	}
+};
\ No newline at end of file
diff --git a/test/function/watch-option/main.js b/test/function/watch-option/main.js
new file mode 100644
index 00000000000..de87bba6701
--- /dev/null
+++ b/test/function/watch-option/main.js
@@ -0,0 +1 @@
+assert.ok(true);
\ No newline at end of file
diff --git a/test/test.js b/test/test.js
index f3db159c38c..d59454e73ba 100644
--- a/test/test.js
+++ b/test/test.js
@@ -132,7 +132,7 @@ describe( 'rollup', function () {
 			return rollup.rollup({ entry: 'x', plUgins: [] }).then( () => {
 				throw new Error( 'Missing expected error' );
 			}, err => {
-				assert.equal( err.message, 'Unexpected key \'plUgins\' found, expected one of: acorn, amd, banner, cache, context, dest, entry, exports, external, footer, format, globals, indent, interop, intro, legacy, moduleContext, moduleName, noConflict, onwarn, outro, paths, plugins, preferConst, sourceMap, sourceMapFile, targets, treeshake, useStrict' );
+				assert.equal( err.message, 'Unexpected key \'plUgins\' found, expected one of: acorn, amd, banner, cache, context, dest, entry, exports, external, footer, format, globals, indent, interop, intro, legacy, moduleContext, moduleName, noConflict, onwarn, outro, paths, plugins, preferConst, sourceMap, sourceMapFile, targets, treeshake, useStrict, watch' );
 			});
 		});