From 197e2c83777e8bb01f75566d8d78424c8e4eba2d Mon Sep 17 00:00:00 2001
From: tamaina <tamaina@hotmail.co.jp>
Date: Sun, 9 Dec 2018 13:15:32 +0900
Subject: [PATCH] #2501  (#3567)

* refactor mfm/html

* fix

* fix

* https://github.com/syuilo/misskey/pull/3567#discussion_r240023301
---
 src/mfm/html.ts | 28 +++++++++++++---------------
 1 file changed, 13 insertions(+), 15 deletions(-)

diff --git a/src/mfm/html.ts b/src/mfm/html.ts
index 50d26e10e..66617adf9 100644
--- a/src/mfm/html.ts
+++ b/src/mfm/html.ts
@@ -14,44 +14,44 @@ export default (tokens: Node[], mentionedRemoteUsers: INote['mentionedRemoteUser
 
 	const doc = window.document;
 
-	function dive(nodes: Node[]): any[] {
-		return nodes.map(n => handlers[n.name](n));
+	function appendChildren(children: Node[], targetElement: any): void {
+		for (const child of children.map(n => handlers[n.name](n))) targetElement.appendChild(child);
 	}
 
 	const handlers: { [key: string]: (token: Node) => any } = {
 		bold(token) {
 			const el = doc.createElement('b');
-			dive(token.children).forEach(child => el.appendChild(child));
+			appendChildren(token.children, el);
 			return el;
 		},
 
 		big(token) {
 			const el = doc.createElement('strong');
-			dive(token.children).forEach(child => el.appendChild(child));
+			appendChildren(token.children, el);
 			return el;
 		},
 
 		small(token) {
 			const el = doc.createElement('small');
-			dive(token.children).forEach(child => el.appendChild(child));
+			appendChildren(token.children, el);
 			return el;
 		},
 
 		strike(token) {
 			const el = doc.createElement('del');
-			dive(token.children).forEach(child => el.appendChild(child));
+			appendChildren(token.children, el);
 			return el;
 		},
 
 		italic(token) {
 			const el = doc.createElement('i');
-			dive(token.children).forEach(child => el.appendChild(child));
+			appendChildren(token.children, el);
 			return el;
 		},
 
 		motion(token) {
 			const el = doc.createElement('i');
-			dive(token.children).forEach(child => el.appendChild(child));
+			appendChildren(token.children, el);
 			return el;
 		},
 
@@ -65,7 +65,7 @@ export default (tokens: Node[], mentionedRemoteUsers: INote['mentionedRemoteUser
 
 		center(token) {
 			const el = doc.createElement('div');
-			dive(token.children).forEach(child => el.appendChild(child));
+			appendChildren(token.children, el);
 			return el;
 		},
 
@@ -96,7 +96,7 @@ export default (tokens: Node[], mentionedRemoteUsers: INote['mentionedRemoteUser
 		link(token) {
 			const a = doc.createElement('a');
 			a.href = token.props.url;
-			dive(token.children).forEach(child => a.appendChild(child));
+			appendChildren(token.children, a);
 			return a;
 		},
 
@@ -111,13 +111,13 @@ export default (tokens: Node[], mentionedRemoteUsers: INote['mentionedRemoteUser
 
 		quote(token) {
 			const el = doc.createElement('blockquote');
-			dive(token.children).forEach(child => el.appendChild(child));
+			appendChildren(token.children, el);
 			return el;
 		},
 
 		title(token) {
 			const el = doc.createElement('h1');
-			dive(token.children).forEach(child => el.appendChild(child));
+			appendChildren(token.children, el);
 			return el;
 		},
 
@@ -147,9 +147,7 @@ export default (tokens: Node[], mentionedRemoteUsers: INote['mentionedRemoteUser
 		}
 	};
 
-	dive(tokens).forEach(x => {
-		doc.body.appendChild(x);
-	});
+	appendChildren(tokens, doc.body);
 
 	return `<p>${doc.body.innerHTML}</p>`;
 };