From 1a6f927b835670fea2df85d5fd1680eb036742ce Mon Sep 17 00:00:00 2001
From: marihachi <marihachi0620@gmail.com>
Date: Wed, 24 Mar 2021 01:03:57 +0900
Subject: [PATCH 1/3] wip

---
 src/index.ts | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)

diff --git a/src/index.ts b/src/index.ts
index 9ba9e47..811dc1c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -12,6 +12,72 @@ export function parsePlain(input: string): MfmNode[] {
 	return nodes;
 }
 
+function nodeStringify(node: MfmNode): string {
+	switch(node.type) {
+		// block
+		case 'quote': {
+			return toString(node.children).split('\n').map(line => `>${line}`).join('\n');
+		}
+		case 'search': {
+			break;
+		}
+		case 'blockCode': {
+			break;
+		}
+		case 'mathBlock': {
+			break;
+		}
+		case 'center': {
+			break;
+		}
+		// inline
+		case 'emoji': {
+			break;
+		}
+		case 'bold': {
+			break;
+		}
+		case 'small': {
+			break;
+		}
+		case 'italic': {
+			break;
+		}
+		case 'strike': {
+			break;
+		}
+		case 'inlineCode': {
+			break;
+		}
+		case 'mathInline': {
+			break;
+		}
+		case 'mention': {
+			break;
+		}
+		case 'hashtag': {
+			break;
+		}
+		case 'url': {
+			break;
+		}
+		case 'link': {
+			break;
+		}
+		case 'fn': {
+			break;
+		}
+		case 'text': {
+			return node.props.text;
+		}
+	}
+	return '';
+}
+
+export function toString(nodes: MfmNode[]): string {
+	return nodes.map(node => nodeStringify(node)).join('');
+}
+
 export {
 	MfmNode,
 	MfmBlock,

From 5c4c242ee24ee6c01c98324c2e48e3b4e9ea0294 Mon Sep 17 00:00:00 2001
From: marihachi <marihachi0620@gmail.com>
Date: Fri, 26 Mar 2021 10:02:24 +0900
Subject: [PATCH 2/3] toString

---
 src/index.ts | 53 +++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 36 insertions(+), 17 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index 811dc1c..b13370b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -19,59 +19,78 @@ function nodeStringify(node: MfmNode): string {
 			return toString(node.children).split('\n').map(line => `>${line}`).join('\n');
 		}
 		case 'search': {
-			break;
+			return node.props.content;
 		}
 		case 'blockCode': {
-			break;
+			return `\`\`\`${ node.props.lang ?? '' }\n${ node.props.code }\n\`\`\``;
 		}
 		case 'mathBlock': {
-			break;
+			return `\\[\n${ node.props.formula }\n\\]`;
 		}
 		case 'center': {
-			break;
+			return `<center>${ toString(node.children) }</center>`;
 		}
 		// inline
 		case 'emoji': {
-			break;
+			if (node.props.name) {
+				return `:${ node.props.name }:`;
+			}
+			else if (node.props.emoji) {
+				return node.props.emoji;
+			}
+			else {
+				return '';
+			}
 		}
 		case 'bold': {
-			break;
+			return `**${ toString(node.children) }**`;
 		}
 		case 'small': {
-			break;
+			return `<small>${ toString(node.children) }</small>`;
 		}
 		case 'italic': {
-			break;
+			return `<i>${ toString(node.children) }</i>`;
 		}
 		case 'strike': {
-			break;
+			return `~~${ toString(node.children) }~~`;
 		}
 		case 'inlineCode': {
-			break;
+			return `\`${ node.props.code }\``;
 		}
 		case 'mathInline': {
-			break;
+			return `\\(${ node.props.formula }\\)`;
 		}
 		case 'mention': {
-			break;
+			return node.props.acct;
 		}
 		case 'hashtag': {
-			break;
+			return `#${ node.props.hashtag }`;
 		}
 		case 'url': {
-			break;
+			return node.props.url;
 		}
 		case 'link': {
-			break;
+			const prefix = node.props.silent ? '?' : '';
+			return `${ prefix }[${ toString(node.children) }](${ node.props.url })`;
 		}
 		case 'fn': {
-			break;
+			const argFields = Object.keys(node.props.args).map(key => {
+				const value = node.props.args[key];
+				if (value === true) {
+					return key;
+				}
+				else {
+					return `${ key }=${ value }`;
+				}
+			});
+			const args = argFields.join(',');
+			return `[${ node.props.name }${ args } ${ toString(node.children) }]`;
 		}
 		case 'text': {
 			return node.props.text;
 		}
 	}
-	return '';
+	throw new Error('unknown mfm node');
 }
 
 export function toString(nodes: MfmNode[]): string {

From 3f584285fe92a9d5904f6ea7ec2bba0f4ff995a3 Mon Sep 17 00:00:00 2001
From: marihachi <marihachi0620@gmail.com>
Date: Fri, 26 Mar 2021 23:02:07 +0900
Subject: [PATCH 3/3] toString

---
 src/index.ts | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index b13370b..1a561ee 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -93,8 +93,15 @@ function nodeStringify(node: MfmNode): string {
 	throw new Error('unknown mfm node');
 }
 
-export function toString(nodes: MfmNode[]): string {
-	return nodes.map(node => nodeStringify(node)).join('');
+export function toString(nodes: MfmNode[]): string
+export function toString(node: MfmNode): string
+export function toString(node: MfmNode | MfmNode[]): string {
+	if (Array.isArray(node)) {
+		return node.map(n => nodeStringify(n)).join('');
+	}
+	else {
+		return nodeStringify(node);
+	}
 }
 
 export {