Refactoring

src/mfm/parse/elements/bold.ts

@@ -15,6 +15,6 @@ export default function(text: string) {
 	return {
 		type: 'bold',
 		content: bold,
-		bold: bold.substr(2, bold.length - 4)
+		bold: match[1]
 	} as TextElementBold;
 }

src/mfm/parse/elements/code.ts

@@ -18,7 +18,7 @@ export default function(text: string) {
 	return {
 		type: 'code',
 		content: code,
-		code: code.substr(3, code.length - 6).trim(),
-		html: genHtml(code.substr(3, code.length - 6).trim())
+		code: match[1],
+		html: genHtml(match[1])
 	} as TextElementCode;
 }

src/mfm/parse/elements/emoji.ts

@@ -9,12 +9,12 @@ export type TextElementEmoji = {
 };
 
 export default function(text: string) {
-	const match = text.match(/^:[a-zA-Z0-9+-_]+:/);
+	const match = text.match(/^:([a-zA-Z0-9+-_]+):/);
 	if (!match) return null;
 	const emoji = match[0];
 	return {
 		type: 'emoji',
 		content: emoji,
-		emoji: emoji.substr(1, emoji.length - 2)
+		emoji: match[1]
 	} as TextElementEmoji;
 }

src/mfm/parse/elements/quote.ts

@@ -15,6 +15,6 @@ export default function(text: string) {
 	return {
 		type: 'quote',
 		content: quote,
-		quote: quote.substr(1, quote.length - 2).trim(),
+		quote: match[1].trim(),
 	} as TextElementQuote;
 }