From a304b661c54a5064d8894907faaf7cd49906666f Mon Sep 17 00:00:00 2001
From: Luiz Corte Real <login+luiz@elo7.com>
Date: Fri, 16 Aug 2019 10:53:55 -0300
Subject: [PATCH] Change type of preprocessor functions to include Promise

---
 src/compiler/preprocess/index.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/compiler/preprocess/index.ts b/src/compiler/preprocess/index.ts
index 51668a93f7..2faa3b97f2 100644
--- a/src/compiler/preprocess/index.ts
+++ b/src/compiler/preprocess/index.ts
@@ -8,7 +8,7 @@ export interface PreprocessorGroup {
 	markup?: (options: {
 		content: string;
 		filename: string;
-	}) => Processed;
+	}) => Processed | Promise<Processed>;
 	style?: Preprocessor;
 	script?: Preprocessor;
 }
@@ -17,7 +17,7 @@ export type Preprocessor = (options: {
 	content: string;
 	attributes: Record<string, string | boolean>;
 	filename?: string;
-}) => Processed;
+}) => Processed | Promise<Processed>;
 
 function parse_attributes(str: string) {
 	const attrs = {};