build(eslint): add eslint configs

.eslintrc.cjs

@@ -0,0 +1,32 @@
+/* eslint-env node */
+require('@rushstack/eslint-patch/modern-module-resolution')
+
+module.exports = {
+  root: true,
+  extends: [
+    'plugin:vue/vue3-essential',
+    'eslint:recommended',
+    '@vue/eslint-config-typescript',
+    '@vue/eslint-config-prettier',
+    'plugin:vue/vue3-recommended',
+    'plugin:vue-pug/vue3-recommended',
+    'plugin:astro/recommended',
+  ],
+  parserOptions: {
+    ecmaVersion: 'latest',
+  },
+  ignorePatterns: ['postcss.config.cjs'],
+  rules: {
+    'vue/no-setup-props-destructure': 'off',
+  },
+  overrides: [
+    {
+      files: ['src/**/*.astro'],
+      parser: 'astro-eslint-parser',
+      parserOptions: {
+        parser: '@typescript-eslint/parser',
+        extraFileExtensions: ['.astro'],
+      },
+    },
+  ],
+}

eslint.config.mjs

@@ -0,0 +1,16 @@
+// @ts-check
+
+import eslint from '@eslint/js'
+import tseslint from 'typescript-eslint'
+import eslintConfigPrettier from 'eslint-config-prettier'
+
+export default tseslint.config({
+  extends: [
+    eslint.configs.recommended,
+    ...tseslint.configs.recommended,
+    eslintConfigPrettier,
+  ],
+  rules: {
+    '@typescript-eslint/consistent-type-imports': 'error',
+  },
+})

lint-staged.config.mjs

@@ -0,0 +1,22 @@
+import { ESLint } from 'eslint'
+
+const removeIgnoredFiles = async (files) => {
+  const eslint = new ESLint()
+  const isIgnored = await Promise.all(
+    files.map((file) => {
+      return eslint.isPathIgnored(file)
+    }),
+  )
+  const filteredFiles = files
+    .filter((_, i) => !isIgnored[i])
+    .map((file) => `"${file}"`)
+  return filteredFiles.join(' ')
+}
+
+export default {
+  '*.{js,ts,mjs,vue}': async (files) => {
+    const filesToLint = await removeIgnoredFiles(files)
+    return [`eslint ${filesToLint}`]
+  },
+  '*': 'prettier --ignore-unknown --write',
+}