diff --git a/biome.json b/biome.json
index c2eccbbf..586c7da1 100644
--- a/biome.json
+++ b/biome.json
@@ -5,7 +5,12 @@
 		"ignore": ["./out", "./coverage"]
 	},
 	"linter": {
-		"enabled": true
+		"enabled": true,
+		"rules": {
+			"nursery": {
+				"useImportExtensions": "error"
+			}
+		}
 	},
 	"formatter": {
 		"enabled": true
diff --git a/src/block/CodeBlock.ts b/src/block/CodeBlock.ts
index b8f63646..a2ce39f1 100644
--- a/src/block/CodeBlock.ts
+++ b/src/block/CodeBlock.ts
@@ -1,4 +1,4 @@
-import type { Row } from "./Row";
+import type { Row } from "./Row.ts";
 
 export interface CodeBlockPack {
 	type: "codeBlock";
diff --git a/src/block/Line.ts b/src/block/Line.ts
index 3eadfbc5..d8a6e6d8 100644
--- a/src/block/Line.ts
+++ b/src/block/Line.ts
@@ -1,7 +1,7 @@
-import { convertToNodes } from "./node";
+import { convertToNodes } from "./node/index.ts";
 
-import type { Row } from "./Row";
-import type { Node } from "./node/type";
+import type { Row } from "./Row.ts";
+import type { Node } from "./node/type.ts";
 
 export interface LinePack {
 	type: "line";
diff --git a/src/block/Pack.ts b/src/block/Pack.ts
index 46ed3be0..552056f8 100644
--- a/src/block/Pack.ts
+++ b/src/block/Pack.ts
@@ -1,9 +1,9 @@
-import type { ParserOption } from "../parse";
-import type { CodeBlockPack } from "./CodeBlock";
-import type { LinePack } from "./Line";
-import type { Row } from "./Row";
-import type { TablePack } from "./Table";
-import type { TitlePack } from "./Title";
+import type { ParserOption } from "../parse.ts";
+import type { CodeBlockPack } from "./CodeBlock.ts";
+import type { LinePack } from "./Line.ts";
+import type { Row } from "./Row.ts";
+import type { TablePack } from "./Table.ts";
+import type { TitlePack } from "./Title.ts";
 
 export type Pack = TitlePack | CodeBlockPack | TablePack | LinePack;
 
diff --git a/src/block/Table.ts b/src/block/Table.ts
index 5ec9b308..eaaea3af 100644
--- a/src/block/Table.ts
+++ b/src/block/Table.ts
@@ -1,7 +1,7 @@
-import { convertToNodes } from "./node";
+import { convertToNodes } from "./node/index.ts";
 
-import type { Row } from "./Row";
-import type { Node } from "./node/type";
+import type { Row } from "./Row.ts";
+import type { Node } from "./node/type.ts";
 
 export interface TablePack {
 	type: "table";
diff --git a/src/block/Title.ts b/src/block/Title.ts
index 76c442ce..b612c979 100644
--- a/src/block/Title.ts
+++ b/src/block/Title.ts
@@ -1,4 +1,4 @@
-import type { Row } from "./Row";
+import type { Row } from "./Row.ts";
 
 export interface TitlePack {
 	type: "title";
diff --git a/src/block/index.ts b/src/block/index.ts
index c1dc6634..e2a3ddaf 100644
--- a/src/block/index.ts
+++ b/src/block/index.ts
@@ -1,13 +1,13 @@
-import { convertToCodeBlock } from "./CodeBlock";
-import { convertToLine } from "./Line";
-import { convertToTable } from "./Table";
-import { convertToTitle } from "./Title";
+import { convertToCodeBlock } from "./CodeBlock.ts";
+import { convertToLine } from "./Line.ts";
+import { convertToTable } from "./Table.ts";
+import { convertToTitle } from "./Title.ts";
 
-import type { CodeBlock } from "./CodeBlock";
-import type { Line } from "./Line";
-import type { Pack } from "./Pack";
-import type { Table } from "./Table";
-import type { Title } from "./Title";
+import type { CodeBlock } from "./CodeBlock.ts";
+import type { Line } from "./Line.ts";
+import type { Pack } from "./Pack.ts";
+import type { Table } from "./Table.ts";
+import type { Title } from "./Title.ts";
 
 /**
  * Scrapbox block type
diff --git a/src/block/node/BlankNode.ts b/src/block/node/BlankNode.ts
index bc319e86..9bdd9a40 100644
--- a/src/block/node/BlankNode.ts
+++ b/src/block/node/BlankNode.ts
@@ -1,9 +1,9 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { NodeParser } from "./index";
-import type { BlankNode, PlainNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { NodeParser } from "./index.ts";
+import type { BlankNode, PlainNode } from "./type.ts";
 
 const blankRegExp = /\[\s+\]/;
 
diff --git a/src/block/node/CodeNode.ts b/src/block/node/CodeNode.ts
index dc8a3a96..3ef43009 100644
--- a/src/block/node/CodeNode.ts
+++ b/src/block/node/CodeNode.ts
@@ -1,9 +1,9 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { NodeParser } from "./index";
-import type { CodeNode, PlainNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { NodeParser } from "./index.ts";
+import type { CodeNode, PlainNode } from "./type.ts";
 
 const codeRegExp = /`.*?`/;
 
diff --git a/src/block/node/CommandLineNode.ts b/src/block/node/CommandLineNode.ts
index fa760012..845bdd32 100644
--- a/src/block/node/CommandLineNode.ts
+++ b/src/block/node/CommandLineNode.ts
@@ -1,9 +1,9 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { NodeParser } from "./index";
-import type { CommandLineNode, PlainNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { NodeParser } from "./index.ts";
+import type { CommandLineNode, PlainNode } from "./type.ts";
 
 const commandLineRegExp = /^[$%] .+$/;
 
diff --git a/src/block/node/DecorationNode.ts b/src/block/node/DecorationNode.ts
index 9701294d..3aff26a1 100644
--- a/src/block/node/DecorationNode.ts
+++ b/src/block/node/DecorationNode.ts
@@ -1,10 +1,10 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
-import { convertToNodes } from "./index";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
+import { convertToNodes } from "./index.ts";
 
-import type { NodeCreator } from "./creator";
-import type { NodeParser } from "./index";
-import type { DecorationNode, PlainNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { NodeParser } from "./index.ts";
+import type { DecorationNode, PlainNode } from "./type.ts";
 
 const decorationRegExp = /\[[!"#%&'()*+,\-./{|}<>_~]+ (?:\[[^[\]]+\]|[^\]])+\]/;
 
diff --git a/src/block/node/ExternalLinkNode.ts b/src/block/node/ExternalLinkNode.ts
index fef2cff7..cb63a7af 100644
--- a/src/block/node/ExternalLinkNode.ts
+++ b/src/block/node/ExternalLinkNode.ts
@@ -1,9 +1,9 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { NodeParser } from "./index";
-import type { LinkNode, PlainNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { NodeParser } from "./index.ts";
+import type { LinkNode, PlainNode } from "./type.ts";
 
 const hrefFirstUrlRegExp = /\[https?:\/\/[^\s\]]+\s+[^\]]*[^\s]\]/;
 const contentFirstUrlRegExp = /\[[^[\]]*[^\s]\s+https?:\/\/[^\s\]]+\]/;
diff --git a/src/block/node/FormulaNode.ts b/src/block/node/FormulaNode.ts
index 32cc9080..3d66f6e4 100644
--- a/src/block/node/FormulaNode.ts
+++ b/src/block/node/FormulaNode.ts
@@ -1,8 +1,8 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { FormulaNode, PlainNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { FormulaNode, PlainNode } from "./type.ts";
 
 const formulaWithTailHalfSpaceRegExp = /\[\$ .+? \]/;
 const formulaRegExp = /\[\$ [^\]]+\]/;
diff --git a/src/block/node/GoogleMapNode.ts b/src/block/node/GoogleMapNode.ts
index f5fb94e1..2d129677 100644
--- a/src/block/node/GoogleMapNode.ts
+++ b/src/block/node/GoogleMapNode.ts
@@ -1,8 +1,8 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { GoogleMapNode, PlainNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { GoogleMapNode, PlainNode } from "./type.ts";
 
 const placeFirstGoogleMapRegExp =
 	/\[([^\]]*[^\s])\s+([NS]\d+(?:\.\d+)?,[EW]\d+(?:\.\d+)?(?:,Z\d+)?)\]/;
diff --git a/src/block/node/HashTagNode.ts b/src/block/node/HashTagNode.ts
index 6c9c1143..328f5f7a 100644
--- a/src/block/node/HashTagNode.ts
+++ b/src/block/node/HashTagNode.ts
@@ -1,8 +1,8 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { HashTagNode, PlainNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { HashTagNode, PlainNode } from "./type.ts";
 
 const hashTagRegExp = /(?:^|\s)#\S+/;
 
diff --git a/src/block/node/HelpfeelNode.ts b/src/block/node/HelpfeelNode.ts
index b446c6f6..b9b47a20 100644
--- a/src/block/node/HelpfeelNode.ts
+++ b/src/block/node/HelpfeelNode.ts
@@ -1,8 +1,8 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { HelpfeelNode, PlainNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { HelpfeelNode, PlainNode } from "./type.ts";
 
 const helpfeelRegExp = /^\? .+$/;
 
diff --git a/src/block/node/IconNode.ts b/src/block/node/IconNode.ts
index e124e768..2c219c73 100644
--- a/src/block/node/IconNode.ts
+++ b/src/block/node/IconNode.ts
@@ -1,8 +1,8 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { IconNode, PlainNode, StrongIconNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { IconNode, PlainNode, StrongIconNode } from "./type.ts";
 
 const iconRegExp = /\[[^[\]]*\.icon(?:\*[1-9]\d*)?\]/;
 
diff --git a/src/block/node/ImageNode.ts b/src/block/node/ImageNode.ts
index f4211a13..14d50058 100644
--- a/src/block/node/ImageNode.ts
+++ b/src/block/node/ImageNode.ts
@@ -1,8 +1,8 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { ImageNode, PlainNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { ImageNode, PlainNode } from "./type.ts";
 
 const srcFirstStrongImageRegExp =
 	/\[https?:\/\/[^\s\]]+\.(?:png|jpe?g|gif|svg)(?:\?[^\]\s]+)?(?:\s+https?:\/\/[^\s\]]+)?\]/i;
diff --git a/src/block/node/InternalLinkNode.ts b/src/block/node/InternalLinkNode.ts
index 9fc47b3b..8094dcd5 100644
--- a/src/block/node/InternalLinkNode.ts
+++ b/src/block/node/InternalLinkNode.ts
@@ -1,7 +1,7 @@
-import { createNodeParser } from "./creator";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { LinkNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { LinkNode } from "./type.ts";
 
 const internalLinkRegExp = /\[\/?[^[\]]+\]/;
 
diff --git a/src/block/node/NumberListNode.ts b/src/block/node/NumberListNode.ts
index f00704ea..4030b5d8 100644
--- a/src/block/node/NumberListNode.ts
+++ b/src/block/node/NumberListNode.ts
@@ -1,9 +1,9 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
-import { convertToNodes } from "./index";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
+import { convertToNodes } from "./index.ts";
 
-import type { NodeCreator } from "./creator";
-import type { NumberListNode, PlainNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { NumberListNode, PlainNode } from "./type.ts";
 
 const numberListRegExp = /^[0-9]+\. .*$/;
 
diff --git a/src/block/node/PlainNode.ts b/src/block/node/PlainNode.ts
index 7ca9088f..05a79942 100644
--- a/src/block/node/PlainNode.ts
+++ b/src/block/node/PlainNode.ts
@@ -1,8 +1,8 @@
-import { createNodeParser } from "./creator";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { NodeParser } from "./index";
-import type { PlainNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { NodeParser } from "./index.ts";
+import type { PlainNode } from "./type.ts";
 
 export const createPlainNode: NodeCreator<PlainNode> = (raw) => [
 	{
diff --git a/src/block/node/QuoteNode.ts b/src/block/node/QuoteNode.ts
index bb07e0c3..9bec9aac 100644
--- a/src/block/node/QuoteNode.ts
+++ b/src/block/node/QuoteNode.ts
@@ -1,9 +1,9 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
-import { convertToNodes } from "./index";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
+import { convertToNodes } from "./index.ts";
 
-import type { NodeCreator } from "./creator";
-import type { PlainNode, QuoteNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { PlainNode, QuoteNode } from "./type.ts";
 
 const quoteRegExp = /^>.*$/;
 
diff --git a/src/block/node/StrongIconNode.ts b/src/block/node/StrongIconNode.ts
index 6fda1489..7864cf31 100644
--- a/src/block/node/StrongIconNode.ts
+++ b/src/block/node/StrongIconNode.ts
@@ -1,5 +1,5 @@
-import { generateIconNodeCreator } from "./IconNode";
-import { createNodeParser } from "./creator";
+import { generateIconNodeCreator } from "./IconNode.ts";
+import { createNodeParser } from "./creator.ts";
 
 const strongIconRegExp = /\[\[[^[\]]*\.icon(?:\*\d+)?\]\]/;
 
diff --git a/src/block/node/StrongImageNode.ts b/src/block/node/StrongImageNode.ts
index f3ddea30..7883a5b1 100644
--- a/src/block/node/StrongImageNode.ts
+++ b/src/block/node/StrongImageNode.ts
@@ -1,8 +1,8 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
 
-import type { NodeCreator } from "./creator";
-import type { PlainNode, StrongImageNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { PlainNode, StrongImageNode } from "./type.ts";
 
 const strongImageRegExp = /\[\[https?:\/\/[^\s\]]+\.(?:png|jpe?g|gif|svg)\]\]/i;
 const strongGyazoImageRegExp =
diff --git a/src/block/node/StrongNode.ts b/src/block/node/StrongNode.ts
index b52eb4a4..dca80f24 100644
--- a/src/block/node/StrongNode.ts
+++ b/src/block/node/StrongNode.ts
@@ -1,10 +1,10 @@
-import { createPlainNode } from "./PlainNode";
-import { createNodeParser } from "./creator";
-import { convertToNodes } from "./index";
+import { createPlainNode } from "./PlainNode.ts";
+import { createNodeParser } from "./creator.ts";
+import { convertToNodes } from "./index.ts";
 
-import type { NodeCreator } from "./creator";
-import type { NodeParser } from "./index";
-import type { PlainNode, StrongNode } from "./type";
+import type { NodeCreator } from "./creator.ts";
+import type { NodeParser } from "./index.ts";
+import type { PlainNode, StrongNode } from "./type.ts";
 
 const strongRegExp = /\[\[(?:[^[]|\[[^[]).*?\]*\]\]/;
 
diff --git a/src/block/node/creator.ts b/src/block/node/creator.ts
index 2274b2b8..24fa759c 100644
--- a/src/block/node/creator.ts
+++ b/src/block/node/creator.ts
@@ -1,7 +1,7 @@
-import { convertToNodes } from "./index";
+import { convertToNodes } from "./index.ts";
 
-import type { NodeParser, NodeParserOption } from "./index";
-import type { Node } from "./type";
+import type { NodeParser, NodeParserOption } from "./index.ts";
+import type { Node } from "./type.ts";
 
 export type NodeCreator<T extends Node> = (
 	target: string,
diff --git a/src/block/node/index.ts b/src/block/node/index.ts
index 87a2b509..ddd19e4e 100644
--- a/src/block/node/index.ts
+++ b/src/block/node/index.ts
@@ -1,23 +1,23 @@
-import { BlankNodeParser } from "./BlankNode";
-import { CodeNodeParser } from "./CodeNode";
-import { CommandLineNodeParser } from "./CommandLineNode";
-import { DecorationNodeParser } from "./DecorationNode";
-import { ExternalLinkNodeParser } from "./ExternalLinkNode";
-import { FormulaNodeParser } from "./FormulaNode";
-import { GoogleMapNodeParser } from "./GoogleMapNode";
-import { HashTagNodeParser } from "./HashTagNode";
-import { HelpfeelNodeParser } from "./HelpfeelNode";
-import { IconNodeParser } from "./IconNode";
-import { ImageNodeParser } from "./ImageNode";
-import { InternalLinkNodeParser } from "./InternalLinkNode";
-import { NumberListNodeParser } from "./NumberListNode";
-import { PlainNodeParser } from "./PlainNode";
-import { QuoteNodeParser } from "./QuoteNode";
-import { StrongIconNodeParser } from "./StrongIconNode";
-import { StrongImageNodeParser } from "./StrongImageNode";
-import { StrongNodeParser } from "./StrongNode";
+import { BlankNodeParser } from "./BlankNode.ts";
+import { CodeNodeParser } from "./CodeNode.ts";
+import { CommandLineNodeParser } from "./CommandLineNode.ts";
+import { DecorationNodeParser } from "./DecorationNode.ts";
+import { ExternalLinkNodeParser } from "./ExternalLinkNode.ts";
+import { FormulaNodeParser } from "./FormulaNode.ts";
+import { GoogleMapNodeParser } from "./GoogleMapNode.ts";
+import { HashTagNodeParser } from "./HashTagNode.ts";
+import { HelpfeelNodeParser } from "./HelpfeelNode.ts";
+import { IconNodeParser } from "./IconNode.ts";
+import { ImageNodeParser } from "./ImageNode.ts";
+import { InternalLinkNodeParser } from "./InternalLinkNode.ts";
+import { NumberListNodeParser } from "./NumberListNode.ts";
+import { PlainNodeParser } from "./PlainNode.ts";
+import { QuoteNodeParser } from "./QuoteNode.ts";
+import { StrongIconNodeParser } from "./StrongIconNode.ts";
+import { StrongImageNodeParser } from "./StrongImageNode.ts";
+import { StrongNodeParser } from "./StrongNode.ts";
 
-import type { Node } from "./type";
+import type { Node } from "./type.ts";
 
 export interface NodeParserOption {
 	nested: boolean;
diff --git a/src/block/node/type.ts b/src/block/node/type.ts
index 8244f43d..3a5e7af5 100644
--- a/src/block/node/type.ts
+++ b/src/block/node/type.ts
@@ -1,4 +1,4 @@
-import type { Decoration } from "./DecorationNode";
+import type { Decoration } from "./DecorationNode.ts";
 
 interface BaseNode {
 	raw: string;
diff --git a/src/index.ts b/src/index.ts
index 264e4bb1..f8a1b96b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,10 +1,10 @@
-export { parse, getTitle } from "./parse";
-export type { ParserOption, Page } from "./parse";
-export type { Block } from "./block";
-export type { Title } from "./block/Title";
-export type { CodeBlock } from "./block/CodeBlock";
-export type { Table } from "./block/Table";
-export type { Line } from "./block/Line";
+export { parse, getTitle } from "./parse.ts";
+export type { ParserOption, Page } from "./parse.ts";
+export type { Block } from "./block/index.ts";
+export type { Title } from "./block/Title.ts";
+export type { CodeBlock } from "./block/CodeBlock.ts";
+export type { Table } from "./block/Table.ts";
+export type { Line } from "./block/Line.ts";
 export type {
 	Node,
 	QuoteNode,
@@ -23,5 +23,5 @@ export type {
 	IconNode,
 	HashTagNode,
 	PlainNode,
-} from "./block/node/type";
-export type { Decoration } from "./block/node/DecorationNode";
+} from "./block/node/type.ts";
+export type { Decoration } from "./block/node/DecorationNode.ts";
diff --git a/src/parse.ts b/src/parse.ts
index 6196b154..8a1c231f 100644
--- a/src/parse.ts
+++ b/src/parse.ts
@@ -1,8 +1,8 @@
-import { convertToBlock } from "./block";
-import { packRows } from "./block/Pack";
-import { parseToRows } from "./block/Row";
+import { packRows } from "./block/Pack.ts";
+import { parseToRows } from "./block/Row.ts";
+import { convertToBlock } from "./block/index.ts";
 
-import type { Block } from "./block";
+import type { Block } from "./block/index.ts";
 
 /**
  * parser option type
diff --git a/tests/codeBlock/index.test.ts b/tests/codeBlock/index.test.ts
index 6d7058f5..699f915b 100644
--- a/tests/codeBlock/index.test.ts
+++ b/tests/codeBlock/index.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("Code Block", () => {
 	it("Simple code block", () => {
diff --git a/tests/line/blank.test.ts b/tests/line/blank.test.ts
index 87469ee9..71af63cb 100644
--- a/tests/line/blank.test.ts
+++ b/tests/line/blank.test.ts
@@ -1,6 +1,6 @@
 /* eslint-disable no-irregular-whitespace */
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("blank", () => {
 	it("Simple half-space blank", () => {
diff --git a/tests/line/bullet.test.ts b/tests/line/bullet.test.ts
index d40e0293..29f8e542 100644
--- a/tests/line/bullet.test.ts
+++ b/tests/line/bullet.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("bullet", () => {
 	it("Single-byte space indent", () => {
diff --git a/tests/line/code.test.ts b/tests/line/code.test.ts
index 15e34043..685f9693 100644
--- a/tests/line/code.test.ts
+++ b/tests/line/code.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("code", () => {
 	it("Simple code with backquote", () => {
diff --git a/tests/line/commandLine.test.ts b/tests/line/commandLine.test.ts
index 06e0ba50..5aebc73f 100644
--- a/tests/line/commandLine.test.ts
+++ b/tests/line/commandLine.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("commandLine", () => {
 	it("Simple command with $", () => {
diff --git a/tests/line/decoration.test.ts b/tests/line/decoration.test.ts
index 3f0cab5a..36e7024f 100644
--- a/tests/line/decoration.test.ts
+++ b/tests/line/decoration.test.ts
@@ -4,7 +4,7 @@ import {
 	type DecorationNode,
 	type Line,
 	parse,
-} from "../../src";
+} from "../../src/index.ts";
 
 describe("decoration", () => {
 	it("Simple decoration", () => {
diff --git a/tests/line/formula.test.ts b/tests/line/formula.test.ts
index c17bb971..04ab4b52 100644
--- a/tests/line/formula.test.ts
+++ b/tests/line/formula.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("formula", () => {
 	it("Simple formula", () => {
diff --git a/tests/line/googleMap.test.ts b/tests/line/googleMap.test.ts
index 1256df9e..f23f6a1d 100644
--- a/tests/line/googleMap.test.ts
+++ b/tests/line/googleMap.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("googleMap", () => {
 	it("Simple google map with NE", () => {
diff --git a/tests/line/hashTag.test.ts b/tests/line/hashTag.test.ts
index e900556a..449ef260 100644
--- a/tests/line/hashTag.test.ts
+++ b/tests/line/hashTag.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("hashTag", () => {
 	it("Simple hashTag", () => {
diff --git a/tests/line/helpfeel.test.ts b/tests/line/helpfeel.test.ts
index 5ca29e2b..16c6e596 100644
--- a/tests/line/helpfeel.test.ts
+++ b/tests/line/helpfeel.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("helpfeel", () => {
 	it("Simple helpfeel", () => {
diff --git a/tests/line/icon.test.ts b/tests/line/icon.test.ts
index fa56b3d5..cbe7f6b9 100644
--- a/tests/line/icon.test.ts
+++ b/tests/line/icon.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("icon", () => {
 	it("Simple root icon", () => {
diff --git a/tests/line/image.test.ts b/tests/line/image.test.ts
index 3e2b8f8a..038f301a 100644
--- a/tests/line/image.test.ts
+++ b/tests/line/image.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("image", () => {
 	it("Simple image", () => {
diff --git a/tests/line/index.test.ts b/tests/line/index.test.ts
index d92ce5dc..5553e304 100644
--- a/tests/line/index.test.ts
+++ b/tests/line/index.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("line", () => {
 	it("Line that have multi node", () => {
diff --git a/tests/line/link.test.ts b/tests/line/link.test.ts
index 23067dad..99a46e81 100644
--- a/tests/line/link.test.ts
+++ b/tests/line/link.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("link", () => {
 	it("Simple absolute link", () => {
diff --git a/tests/line/numberList.test.ts b/tests/line/numberList.test.ts
index 713d7e18..8f9aeaba 100644
--- a/tests/line/numberList.test.ts
+++ b/tests/line/numberList.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("numberList", () => {
 	it("Minimum numberList", () => {
diff --git a/tests/line/plain.test.ts b/tests/line/plain.test.ts
index a3c1d60c..7dc615e4 100644
--- a/tests/line/plain.test.ts
+++ b/tests/line/plain.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("plain", () => {
 	it("Simple plain text", () => {
diff --git a/tests/line/quote.test.ts b/tests/line/quote.test.ts
index b6483bbd..e2991f5a 100644
--- a/tests/line/quote.test.ts
+++ b/tests/line/quote.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("quote", () => {
 	it("Simple quote", () => {
diff --git a/tests/line/strong.test.ts b/tests/line/strong.test.ts
index 35ffd7a5..80a086c2 100644
--- a/tests/line/strong.test.ts
+++ b/tests/line/strong.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("strong", () => {
 	it("Simple strong", () => {
diff --git a/tests/line/strongIcon.test.ts b/tests/line/strongIcon.test.ts
index 8e6d702b..45b6973c 100644
--- a/tests/line/strongIcon.test.ts
+++ b/tests/line/strongIcon.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("strongIcon", () => {
 	it("Simple root strong icon", () => {
diff --git a/tests/line/strongImage.test.ts b/tests/line/strongImage.test.ts
index 21ba7a89..c743a58c 100644
--- a/tests/line/strongImage.test.ts
+++ b/tests/line/strongImage.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("strongImage", () => {
 	it("Simple strong image", () => {
diff --git a/tests/page/index.test.ts b/tests/page/index.test.ts
index 6e1de26d..dd095d79 100644
--- a/tests/page/index.test.ts
+++ b/tests/page/index.test.ts
@@ -1,6 +1,7 @@
 import * as fs from "node:fs";
+import path from "node:path";
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("page", () => {
 	it("Empty page", () => {
@@ -14,7 +15,9 @@ describe("page", () => {
 	});
 
 	it("https://scrapbox.io/help/Syntax", () => {
-		const input = fs.readFileSync("./tests/page/input.txt").toString();
+		const input = fs
+			.readFileSync(path.resolve("tests/page/input.txt"))
+			.toString();
 		expect(parse(input, { hasTitle: true })).toMatchSnapshot();
 	});
 });
diff --git a/tests/table/index.test.ts b/tests/table/index.test.ts
index d487e09c..c25cd7b4 100644
--- a/tests/table/index.test.ts
+++ b/tests/table/index.test.ts
@@ -1,6 +1,6 @@
 /* eslint-disable no-tabs, no-irregular-whitespace */
 import { describe, expect, it } from "vitest";
-import { parse } from "../../src";
+import { parse } from "../../src/index.ts";
 
 describe("Table", () => {
 	it("Simple table", () => {
diff --git a/tests/title/index.test.ts b/tests/title/index.test.ts
index bc1c9dcf..39a1d3fb 100644
--- a/tests/title/index.test.ts
+++ b/tests/title/index.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { getTitle } from "../../src";
+import { getTitle } from "../../src/index.ts";
 
 describe("title", () => {
 	it("Get title from simple page", () => {
diff --git a/tsconfig.lint.json b/tsconfig.lint.json
index 03b37193..0714f72a 100644
--- a/tsconfig.lint.json
+++ b/tsconfig.lint.json
@@ -1,6 +1,7 @@
 {
 	"extends": "./tsconfig",
 	"compilerOptions": {
+		"emitDeclarationOnly": false,
 		"noEmit": true
 	},
 	"include": ["**/*"]
diff --git a/vite.config.ts b/vite.config.ts
index d5f57ced..01d36b33 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -1,30 +1,35 @@
 /// <reference types="vitest" />
 import { resolve } from "node:path";
-import { defineConfig, type LibraryFormats } from "vite";
+import { type LibraryFormats, defineConfig } from "vite";
 
 const formats = ["es", "cjs", "umd"] satisfies LibraryFormats[];
 
 export default defineConfig({
-  build: {
-    emptyOutDir: false,
-    outDir: "out",
-    lib: {
-      formats,
-      entry: resolve(__dirname, "src/index.ts"),
-      fileName: (format) =>
-        ((
-          {
-            cjs: "index.cjs",
-            es: "index.mjs",
-            umd: "scrapbox-parser.umd.js",
-          } satisfies Record<(typeof formats)[number], string>
-        )[format]),
-    },
-  },
-  test: {
-    include: ["**/tests/**/*.test.ts"],
-    coverage: {
-      include: ["src/**/*.ts"],
-    },
-  },
+	build: {
+		emptyOutDir: false,
+		outDir: "out",
+		lib: {
+			formats,
+			entry: resolve(__dirname, "src/index.ts"),
+			name: "ScrapboxParser",
+			fileName: (format) => {
+				switch (format) {
+					case "cjs":
+						return "index.cjs";
+					case "es":
+						return "index.mjs";
+					case "umd":
+						return "scrapbox-parser.umd.js";
+					default:
+						throw new Error(`unknown format: ${format}`);
+				}
+			},
+		},
+	},
+	test: {
+		include: ["**/tests/**/*.test.ts"],
+		coverage: {
+			include: ["src/**/*.ts"],
+		},
+	},
 });