Make Gulp an optional peer dependency

sindresorhus · sindresorhus · commit 8e452dbabf0b · 2019-10-04T15:15:52.000+07:00
diff --git a/package.json b/package.json
@@ -51,6 +51,11 @@
 	"peerDependencies": {
 		"gulp": ">=4"
 	},
+	"peerDependenciesMeta": {
+		"gulp": {
+			"optional": true
+		}
+	},
 	"xo": {
 		"ignores": [
 			"test/fixtures"
