chore: fix vitepress config

Author: ota-meshi

docs/.vitepress/config.js renamed to docs/.vitepress/config.mjs

@@ -1,13 +1,17 @@
-"use strict"
+import { defineConfig } from "vitepress"
+import path from "path"
+import { fileURLToPath } from "url"
+import { viteCommonjs, vitePluginRequireResolve } from "./vite-plugin.mjs"
+import eslint4b from "vite-plugin-eslint4b"
+import { createRequire } from "module"
 
-const { defineConfig } = require("vitepress")
-const path = require("path")
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+const require = createRequire(import.meta.url)
 
 const { categories } = require("../../scripts/rules.js")
-const { viteCommonjs, vitePluginRequireResolve } = require("./vite-plugin")
-const { default: eslint4b } = require("vite-plugin-eslint4b")
 
-module.exports = defineConfig({
+export default defineConfig({
     title: "eslint-plugin-es-x",
     base: "/eslint-plugin-es-x/",
     description: "ESLint plugin about ECMAScript syntax.",

docs/.vitepress/vite-plugin.js renamed to docs/.vitepress/vite-plugin.mjs

@@ -1,16 +1,13 @@
-"use strict"
+import path from "path"
+import { fileURLToPath } from "url"
+import esbuild from "esbuild"
 
-const path = require("path")
-
-const esbuild = require("esbuild")
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
 
 const libRoot = path.join(__dirname, "../../lib")
-module.exports = {
-    vitePluginRequireResolve,
-    viteCommonjs,
-}
 
-function vitePluginRequireResolve() {
+export function vitePluginRequireResolve() {
     return {
         name: "vite-plugin-require.resolve",
         transform(code, id, _options) {
@@ -25,7 +22,7 @@ function vitePluginRequireResolve() {
     }
 }
 
-function viteCommonjs() {
+export function viteCommonjs() {
     return {
         name: "vite-plugin-cjs-to-esm",
         apply: () => true,