{"id":9841,"date":"2026-06-16T09:36:55","date_gmt":"2026-06-16T00:36:55","guid":{"rendered":"https:\/\/fastcoding.jp\/blog\/?p=9841"},"modified":"2026-06-16T09:37:02","modified_gmt":"2026-06-16T00:37:02","slug":"nextjs-error-handling","status":"publish","type":"post","link":"https:\/\/fastcoding.jp\/blog\/all\/frontend\/nextjs-error-handling\/","title":{"rendered":"AI\u99c6\u52d5\u958b\u767a\u3067Next.js\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u6226\u7565\u3092\u69cb\u7bc9\u3059\u308b"},"content":{"rendered":"
\n

\u3053\u3093\u306b\u3061\u306f\u3001\u682a\u5f0f\u4f1a\u793e\u30d5\u30a1\u30b9\u30c8\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u30d5\u30eb\u30b9\u30bf\u30c3\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u3001\u72ec\u8eab\u8cb4\u65cfFire\u3067\u3059\u3002<\/p>\n\n\n\n

\u5148\u65e5\u306e\u30c4\u30fc\u30ea\u30f3\u30b0\u3067\u5c71\u9053\u3092\u8d70\u3063\u3066\u3044\u305f\u3068\u304d\u3001\u30ca\u30d3\u30a2\u30d7\u30ea\u304c\u570f\u5916\u3067\u56fa\u307e\u3063\u305f\u3093\u3067\u3059\u3002\u5730\u56f3\u306f\u8868\u793a\u3055\u308c\u306a\u3044\u3001\u30ea\u30eb\u30fc\u30c8\u3082\u3055\u308c\u306a\u3044\u3001\u753b\u9762\u306b\u306f\u4f55\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3082\u306a\u3044\u3002\u7d50\u5c40\u3001\u52d8\u3067\u8d70\u3063\u3066\u5e30\u3063\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

\u30a8\u30e9\u30fc\u304c\u8d77\u304d\u305f\u3068\u304d\u306b\u4f55\u3082\u4f1d\u3048\u306a\u3044\u306e\u306f\u3001\u6700\u60aa\u306eUX\u3067\u3059\u3002Web\u30a2\u30d7\u30ea\u3082\u540c\u3058\u3002<\/small><\/p>\n\n\n\n

AI\u99c6\u52d5\u958b\u767a\u3067Next.js App Router\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u6226\u7565\u3092\u8a2d\u8a08\u3057\u3066\u307f\u307e\u3057\u305f\u3002AI\u306b\u300cerror.tsx\u3068global-error.tsx\u306e\u4f7f\u3044\u5206\u3051\u300d\u3092\u63d0\u6848\u3055\u305b\u305f\u3068\u3053\u308d\u3001\u4ed5\u7d44\u307f\u306f\u6b63\u3057\u304f\u7406\u89e3\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u300c\u30e6\u30fc\u30b6\u30fc\u306b\u4f55\u3092\u4f1d\u3048\u308b\u3079\u304d\u304b\u300d\u306eUX\u5224\u65ad\u304c\u7518\u304b\u3063\u305f\u3002\u6280\u8853\u7684\u306b\u6b63\u3057\u3044\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3068\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30c0\u30af\u30c8\u3067\u4f7f\u3048\u308b\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306b\u306f\u5dee\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

Next.js App Router\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u57fa\u672c<\/h2>\n\n\n\n

Next.js App Router\u306b\u306f\u3001\u30a8\u30e9\u30fc\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u5c02\u7528\u30d5\u30a1\u30a4\u30eb\u304c3\u3064\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u30d5\u30a1\u30a4\u30eb<\/th>\u5f79\u5272<\/th>\u30ad\u30e3\u30c3\u30c1\u3059\u308b\u30a8\u30e9\u30fc<\/th><\/tr><\/thead>
error.tsx<\/code><\/td>\u30bb\u30b0\u30e1\u30f3\u30c8\u5358\u4f4d\u306e\u30a8\u30e9\u30fcUI<\/td>\u305d\u306e\u30eb\u30fc\u30c8\u30bb\u30b0\u30e1\u30f3\u30c8\u5185\u3067\u767a\u751f\u3057\u305f\u30e9\u30f3\u30bf\u30a4\u30e0\u30a8\u30e9\u30fc<\/td><\/tr>
global-error.tsx<\/code><\/td>\u30a2\u30d7\u30ea\u5168\u4f53\u306e\u30a8\u30e9\u30fcUI<\/td>\u30eb\u30fc\u30c8\u30ec\u30a4\u30a2\u30a6\u30c8\u5185\u306e\u30a8\u30e9\u30fc\uff08error.tsx\u3067\u306f\u6355\u6349\u3067\u304d\u306a\u3044\u3082\u306e\uff09<\/td><\/tr>
not-found.tsx<\/code><\/td>404\u30a8\u30e9\u30fcUI<\/td>notFound()<\/code>\u304c\u547c\u3070\u308c\u305f\u5834\u5408\u3001\u307e\u305f\u306fURL\u306b\u5bfe\u5fdc\u3059\u308b\u30eb\u30fc\u30c8\u304c\u306a\u3044\u5834\u5408<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u91cd\u8981\u306a\u306e\u306f\u3001error.tsx<\/code>\u306fClient Component\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308b\u70b9\u3067\u3059\u3002'use client'<\/code>\u3092\u4ed8\u3051\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002Server Component\u3067\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u4e2d\u306b\u767a\u751f\u3057\u305f\u30a8\u30e9\u30fc\u3082\u3001\u6700\u3082\u8fd1\u3044error.tsx<\/code>\u304c\u30ad\u30e3\u30c3\u30c1\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

AI\u306b\u8a2d\u8a08\u3092\u4f9d\u983c\u3059\u308b<\/h2>\n\n\n\n

AI\u306b\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u6226\u7565\u306e\u8a2d\u8a08\u3092\u4f9d\u983c\u3057\u307e\u3057\u305f\u3002\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u3068\u8a2d\u5b9a\u753b\u9762\u3092\u6301\u3064\u30a2\u30d7\u30ea\u3092\u60f3\u5b9a\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u308f\u304b\u308a\u3084\u3059\u3044\u30e1\u30c3\u30bb\u30fc\u30b8\u3001\u958b\u767a\u74b0\u5883\u3067\u306e\u30c7\u30d0\u30c3\u30b0\u60c5\u5831\u3001\u30ea\u30c8\u30e9\u30a4\u6a5f\u80fd\u3092\u8981\u4ef6\u3068\u3057\u3066\u6e21\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

AI\u306e\u63d0\u6848\u3068\u4fee\u6b63<\/h2>\n\n\n\n

error.tsx\uff1a\u30bb\u30b0\u30e1\u30f3\u30c8\u5358\u4f4d\u306e\u30a8\u30e9\u30fc<\/h3>\n\n\n\n

AI\u306e\u521d\u7248\u306b\u306f3\u3064\u306e\u554f\u984c\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u82f1\u8a9e\u306e\u307e\u307e\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u4f55\u304c\u8d77\u304d\u305f\u304b\u4f1d\u3048\u3066\u3044\u306a\u3044\u3001\u958b\u767a\u74b0\u5883\u3067\u306e\u30c7\u30d0\u30c3\u30b0\u60c5\u5831\u304c\u306a\u3044\u3002\u4fee\u6b63\u7248\u306f\u3053\u3046\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\/\/ app\/dashboard\/error.tsx \u2014 \u4fee\u6b63\u7248\n'use client';\n\nimport { useEffect } from 'react';\n\nexport default function DashboardError({\n  error,\n  reset,\n}: {\n  error: Error & { digest?: string };\n  reset: () => void;\n}) {\n  useEffect(() => {\n    console.error('Dashboard error:', error);\n  }, [error]);\n\n  return (\n    <div className=\"flex flex-col items-center justify-center min-h-[400px] p-8\">\n      <div className=\"text-center max-w-md\">\n        <h2 className=\"text-xl font-bold mb-4\">\n          \u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f\u306b\u5931\u6557\u3057\u307e\u3057\u305f\n        <\/h2>\n        <p className=\"text-gray-600 mb-6\">\n          \u4e00\u6642\u7684\u306a\u554f\u984c\u304c\u767a\u751f\u3057\u3066\u3044\u307e\u3059\u3002\u3057\u3070\u3089\u304f\u5f85\u3063\u3066\u304b\u3089\u3082\u3046\u4e00\u5ea6\u304a\u8a66\u3057\u304f\u3060\u3055\u3044\u3002\n        <\/p>\n        <button\n          onClick={() => reset()}\n          className=\"px-6 py-2 bg-blue-600 text-white rounded hover:bg-blue-700\"\n        >\n          \u518d\u8aad\u307f\u8fbc\u307f\n        <\/button>\n        {process.env.NODE_ENV === 'development' && (\n          <details className=\"mt-6 text-left text-sm\">\n            <summary className=\"cursor-pointer text-gray-500\">\n              \u30a8\u30e9\u30fc\u8a73\u7d30\uff08\u958b\u767a\u74b0\u5883\u306e\u307f\uff09\n            <\/summary>\n            <pre className=\"mt-2 p-4 bg-gray-100 rounded overflow-x-auto text-xs\">\n              {error.message}\n              {error.stack && `\\n\\n${error.stack}`}\n            <\/pre>\n          <\/details>\n        )}\n      <\/div>\n    <\/div>\n  );\n}<\/code><\/pre>\n\n\n\n
\u4fee\u6b63\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n
    \n
  • \u30e6\u30fc\u30b6\u30fc\u306b\u4f1d\u308f\u308b\u30e1\u30c3\u30bb\u30fc\u30b8<\/strong>\u3002\u300c\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u300d\u306f\u3001\u4f55\u304c\u8d77\u304d\u305f\u304b\u304c\u5177\u4f53\u7684\u306b\u308f\u304b\u308b<\/li>\n\n\n\n
  • \u6b21\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u793a\u3059<\/strong>\u3002\u300c\u3057\u3070\u3089\u304f\u5f85\u3063\u3066\u304b\u3089\u3082\u3046\u4e00\u5ea6\u304a\u8a66\u3057\u304f\u3060\u3055\u3044\u300d\u3068\u300c\u518d\u8aad\u307f\u8fbc\u307f\u300d\u30dc\u30bf\u30f3\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u4f55\u3092\u3059\u3079\u304d\u304b\u304c\u660e\u78ba<\/li>\n\n\n\n
  • \u958b\u767a\u74b0\u5883\u3067\u306e\u30c7\u30d0\u30c3\u30b0\u60c5\u5831<\/strong>\u3002process.env.NODE_ENV === 'development'<\/code>\u3067\u51fa\u3057\u5206\u3051\u308b\u3002\u3053\u306e\u5024\u306f\u30d3\u30eb\u30c9\u6642\u306b\u30a4\u30f3\u30e9\u30a4\u30f3\u5c55\u958b\u3055\u308c\u308b\u305f\u3081\u3001\u672c\u756a\u30d3\u30eb\u30c9\u3067\u306f\u3053\u306e\u30d6\u30ed\u30c3\u30af\u5168\u4f53\u304c\u30d0\u30f3\u30c9\u30eb\u304b\u3089\u9664\u53bb\u3055\u308c\u308b<\/li>\n<\/ul>\n\n\n\n
    global-error.tsx\uff1a\u30a2\u30d7\u30ea\u5168\u4f53\u306e\u30a8\u30e9\u30fc<\/h3>\n\n\n\n
    \u30eb\u30fc\u30c8\u30ec\u30a4\u30a2\u30a6\u30c8\u81ea\u4f53\u3067\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001error.tsx<\/code>\u3067\u306f\u30ad\u30e3\u30c3\u30c1\u3067\u304d\u307e\u305b\u3093\u3002global-error.tsx<\/code>\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n
    \/\/ app\/global-error.tsx\n'use client';\n\nexport default function GlobalError({\n  error,\n  reset,\n}: {\n  error: Error & { digest?: string };\n  reset: () => void;\n}) {\n  return (\n    <html lang=\"ja\">\n      <body>\n        <div className=\"flex flex-col items-center justify-center min-h-screen p-8\">\n          <div className=\"text-center max-w-md\">\n            <h2 className=\"text-xl font-bold mb-4\">\n              \u4e88\u671f\u3057\u306a\u3044\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\n            <\/h2>\n            <p className=\"text-gray-600 mb-6\">\n              \u7533\u3057\u8a33\u3054\u3056\u3044\u307e\u305b\u3093\u3002\u30da\u30fc\u30b8\u3092\u518d\u8aad\u307f\u8fbc\u307f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\n              \u554f\u984c\u304c\u89e3\u6c7a\u3057\u306a\u3044\u5834\u5408\u306f\u3001\u3057\u3070\u3089\u304f\u3057\u3066\u304b\u3089\u518d\u5ea6\u304a\u8a66\u3057\u304f\u3060\u3055\u3044\u3002\n            <\/p>\n            <button\n              onClick={() => reset()}\n              className=\"px-6 py-2 bg-blue-600 text-white rounded hover:bg-blue-700\"\n            >\n              \u518d\u8aad\u307f\u8fbc\u307f\n            <\/button>\n          <\/div>\n        <\/div>\n      <\/body>\n    <\/html>\n  );\n}<\/code><\/pre>\n\n\n\n
    global-error.tsx<\/code>\u306b\u306f<html><\/code>\u3068<body><\/code>\u30bf\u30b0\u3092\u542b\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30eb\u30fc\u30c8\u30ec\u30a4\u30a2\u30a6\u30c8\u304c\u58ca\u308c\u3066\u3044\u308b\u72b6\u614b\u3067\u8868\u793a\u3055\u308c\u308b\u305f\u3081\u3001\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u5916\u5074\u3067\u72ec\u7acb\u3057\u3066\u52d5\u304f\u5fc5\u8981\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002AI\u306f\u3053\u306e\u70b9\u3092\u6b63\u3057\u304f\u7406\u89e3\u3057\u3066\u63d0\u6848\u3057\u3066\u304d\u307e\u3057\u305f\u304c\u3001lang=\"ja\"<\/code>\u3092\u5fd8\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n
    not-found.tsx\uff1a404\u30a8\u30e9\u30fc<\/h3>\n\n\n\n
    \/\/ app\/not-found.tsx\nimport Link from 'next\/link';\n\nexport default function NotFound() {\n  return (\n    <div className=\"flex flex-col items-center justify-center min-h-[400px] p-8\">\n      <div className=\"text-center max-w-md\">\n        <h2 className=\"text-xl font-bold mb-4\">\n          \u30da\u30fc\u30b8\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\n        <\/h2>\n        <p className=\"text-gray-600 mb-6\">\n          \u304a\u63a2\u3057\u306e\u30da\u30fc\u30b8\u306f\u79fb\u52d5\u307e\u305f\u306f\u524a\u9664\u3055\u308c\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\n        <\/p>\n        <Link\n          href=\"\/\"\n          className=\"px-6 py-2 bg-blue-600 text-white rounded hover:bg-blue-700 inline-block\"\n        >\n          \u30c8\u30c3\u30d7\u30da\u30fc\u30b8\u306b\u623b\u308b\n        <\/Link>\n      <\/div>\n    <\/div>\n  );\n}<\/code><\/pre>\n\n\n\n
    not-found.tsx<\/code>\u306ferror.tsx<\/code>\u3068\u7570\u306a\u308a\u3001Server Component\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002'use client'<\/code>\u306f\u4e0d\u8981\u3067\u3059\u3002\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306fnotFound()<\/code>\u95a2\u6570\u304c\u547c\u3070\u308c\u305f\u3068\u304d\u3001\u307e\u305f\u306f\u30eb\u30fc\u30c8\u304c\u5b58\u5728\u3057\u306a\u3044\u3068\u304d\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
    Server Component\u3067\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/h2>\n\n\n\n
    Server Component\u3067\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u969b\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002<\/p>\n\n\n\n
    \/\/ app\/dashboard\/page.tsx\nimport { notFound } from 'next\/navigation';\n\nasync function getDashboardData() {\n  const res = await fetch('https:\/\/api.example.com\/dashboard', {\n    next: { revalidate: 60 },\n  });\n\n  if (res.status === 404) {\n    notFound();\n  }\n\n  if (!res.ok) {\n    throw new Error(`API error: ${res.status}`);\n  }\n\n  return res.json();\n}\n\nexport default async function DashboardPage() {\n  const data = await getDashboardData();\n\n  return (\n    <div className=\"p-6\">\n      <h1 className=\"text-2xl font-bold mb-6\">\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9<\/h1>\n      {\/* \u30c7\u30fc\u30bf\u8868\u793a *\/}\n    <\/div>\n  );\n}<\/code><\/pre>\n\n\n\n
    \u30dd\u30a4\u30f3\u30c8\u306f2\u3064\u3067\u3059\u3002<\/p>\n\n\n\n
      \n
    1. 404\u306fnotFound()\u3067\u51e6\u7406\u3059\u308b<\/strong>\u3002throw\u3067\u306f\u306a\u304fnotFound()\u3092\u4f7f\u3046\u3068\u3001not-found.tsx\u304c\u8868\u793a\u3055\u308c\u308b\u3002API\u304c404\u3092\u8fd4\u3057\u305f\u5834\u5408\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u898b\u305b\u308b\u3079\u304d\u306f\u300c\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u300d\u3067\u306f\u306a\u304f\u300c\u30da\u30fc\u30b8\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u300d<\/li>\n\n\n\n
    2. \u305d\u308c\u4ee5\u5916\u306e\u30a8\u30e9\u30fc\u306fthrow\u3059\u308b<\/strong>\u3002throw\u3055\u308c\u305f\u30a8\u30e9\u30fc\u306f\u6700\u3082\u8fd1\u3044error.tsx\u304c\u30ad\u30e3\u30c3\u30c1\u3059\u308b\u3002try\/catch\u3067\u98f2\u307f\u8fbc\u307e\u305a\u306b\u3001Error Boundary\u306b\u4efb\u305b\u308b<\/li>\n<\/ol>\n\n\n\n
      AI\u304c\u898b\u843d\u3068\u3057\u3066\u3044\u305f\u30dd\u30a4\u30f3\u30c8<\/h2>\n\n\n\n
      \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u51fa\u3057\u5206\u3051<\/h3>\n\n\n\n
      AI\u306f\u5168\u3066\u306eerror.tsx\u3067\u540c\u3058\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u4f7f\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u753b\u9762\u306b\u3088\u3063\u3066\u4f1d\u3048\u308b\u3079\u304d\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
      \u753b\u9762<\/th>\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8<\/th>\u7406\u7531<\/th><\/tr><\/thead>
      \u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9<\/td>\u300c\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u300d<\/td>\u30c7\u30fc\u30bf\u53d6\u5f97\u30a8\u30e9\u30fc\u304c\u4e3b\u56e0<\/td><\/tr>
      \u8a2d\u5b9a\u753b\u9762<\/td>\u300c\u8a2d\u5b9a\u306e\u4fdd\u5b58\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u300d<\/td>\u64cd\u4f5c\u306e\u5931\u6557\u304c\u4e3b\u56e0<\/td><\/tr>
      \u30d5\u30a9\u30fc\u30e0\u9001\u4fe1<\/td>\u300c\u9001\u4fe1\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u3002\u5165\u529b\u5185\u5bb9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u300d<\/td>\u30e6\u30fc\u30b6\u30fc\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u7d10\u3065\u304f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
      AI\u306f\u6280\u8853\u7684\u306b\u6b63\u3057\u3044\u30a8\u30e9\u30fc\u51e6\u7406\u306f\u66f8\u3051\u307e\u3059\u304c\u3001\u753b\u9762\u306e\u6587\u8108\u306b\u5fdc\u3058\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u4f7f\u3044\u5206\u3051<\/strong>\u306f\u30d7\u30ed\u30c0\u30af\u30c8\u306e\u7406\u89e3\u304c\u306a\u3044\u3068\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n
      reset()\u306e\u5236\u7d04<\/h3>\n\n\n\n
      AI\u306e\u63d0\u6848\u3067\u306freset()<\/code>\u3092\u4e07\u80fd\u306e\u30ea\u30c8\u30e9\u30a4\u624b\u6bb5\u3068\u3057\u3066\u6271\u3063\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u5b9f\u969b\u306b\u306f\u5236\u7d04\u304c\u3042\u308a\u307e\u3059\u3002reset()<\/code>\u306fReact\u306eError Boundary\u306e\u30a8\u30e9\u30fc\u72b6\u614b\u3092\u30af\u30ea\u30a2\u3057\u3001\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u8a66\u307f\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30c7\u30fc\u30bf\u306e\u518d\u53d6\u5f97\u306f\u884c\u3044\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u304cAPI\u306e\u4e0d\u5177\u5408\u3067\u3042\u308c\u3070\u3001reset()\u3057\u3066\u3082\u540c\u3058\u30a8\u30e9\u30fc\u304c\u518d\u767a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
      \u5b9f\u52d9\u3067\u306f\u3001reset()\u306b\u52a0\u3048\u3066\u300c\u30c8\u30c3\u30d7\u30da\u30fc\u30b8\u306b\u623b\u308b\u300d\u30ea\u30f3\u30af\u3082\u7528\u610f\u3057\u3066\u304a\u304f\u306e\u304c\u5b89\u5168\u3067\u3059\u3002\u30ea\u30c8\u30e9\u30a4\u3057\u3066\u3082\u30c0\u30e1\u3060\u3063\u305f\u5834\u5408\u306b\u30e6\u30fc\u30b6\u30fc\u304c\u884c\u304d\u6b62\u307e\u308a\u306b\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n
      \u307e\u3068\u3081<\/h2>\n\n\n\n
      \u4eca\u56de\u306f\u3001AI\u99c6\u52d5\u958b\u767a\u3067Next.js App Router\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u6226\u7565\u3092\u8a2d\u8a08\u3057\u305f\u904e\u7a0b\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n
      \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3067AI\u3092\u6d3b\u7528\u3059\u308b\u969b\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u4ee5\u4e0b\u306e3\u3064\u3067\u3059\u3002<\/p>\n\n\n\n
        \n
      1. error.tsx\u3001global-error.tsx\u3001not-found.tsx\u306e3\u3064\u3092\u9069\u5207\u306b\u914d\u7f6e\u3059\u308b<\/strong>\u3002\u30bb\u30b0\u30e1\u30f3\u30c8\u3054\u3068\u306berror.tsx\u3092\u914d\u7f6e\u3057\u3001\u30eb\u30fc\u30c8\u30ec\u30a4\u30a2\u30a6\u30c8\u7528\u306bglobal-error.tsx\u3092\u7528\u610f\u3059\u308b\u3002not-found.tsx\u3067404\u3092\u51e6\u7406\u3059\u308b<\/li>\n\n\n\n
      2. \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u753b\u9762\u306e\u6587\u8108\u306b\u5408\u308f\u305b\u308b<\/strong>\u3002AI\u306f\u6c4e\u7528\u7684\u306a\u300cSomething went wrong\u300d\u3092\u51fa\u3059\u304c\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30c0\u30af\u30c8\u3067\u306f\u300c\u4f55\u304c\u5931\u6557\u3057\u305f\u304b\u300d\u300c\u4f55\u3092\u3059\u3079\u304d\u304b\u300d\u3092\u5177\u4f53\u7684\u306b\u4f1d\u3048\u308b<\/li>\n\n\n\n
      3. reset()\u3060\u3051\u306b\u983c\u3089\u306a\u3044<\/strong>\u3002reset()\u306f\u30c7\u30fc\u30bf\u306e\u518d\u53d6\u5f97\u3092\u884c\u308f\u306a\u3044\u305f\u3081\u3001API\u8d77\u56e0\u306e\u30a8\u30e9\u30fc\u304b\u3089\u306f\u5fa9\u65e7\u3067\u304d\u306a\u3044\u3002\u30c8\u30c3\u30d7\u30da\u30fc\u30b8\u3078\u306e\u30ea\u30f3\u30af\u306a\u3069\u4ee3\u66ff\u306e\u5c0e\u7dda\u3092\u7528\u610f\u3059\u308b<\/li>\n<\/ol>\n\n\n\n
        \u79c1\u305f\u3061\u306e\u958b\u767a\u73fe\u5834\u3067\u306f\u3001AI\u306berror.tsx\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u751f\u6210\u3055\u305b\u3066\u304b\u3089\u3001\u753b\u9762\u3054\u3068\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3084\u5c0e\u7dda\u3092\u4eba\u9593\u304c\u8abf\u6574\u3059\u308b\u30d5\u30ed\u30fc\u3092\u63a1\u3063\u3066\u3044\u307e\u3059\u3002\u6280\u8853\u7684\u306a\u9aa8\u683c\u306fAI\u304c\u4f5c\u308a\u3001UX\u306e\u5224\u65ad\u306f\u4eba\u9593\u304c\u884c\u3046\u3002\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306f\u307e\u3055\u306b\u3053\u306e\u5f79\u5272\u5206\u62c5\u304c\u52b9\u304f\u9818\u57df\u3067\u3059\u3002<\/p>\n\n\n\n
        \u682a\u5f0f\u4f1a\u793e\u30d5\u30a1\u30b9\u30c8\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3067\u306f\u3001AI\u99c6\u52d5\u958b\u767a\u3092\u53d6\u308a\u5165\u308c\u305fNext.js\u306e\u8a2d\u8a08\u30fb\u5b9f\u88c5\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u300c\u30a8\u30e9\u30fc\u753b\u9762\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u307e\u307e\u300d\u300c\u30e6\u30fc\u30b6\u30fc\u304c\u56f0\u308b\u30a8\u30e9\u30fc\u8868\u793a\u3092\u6539\u5584\u3057\u305f\u3044\u300d\u3068\u3044\u3046\u65b9\u306f\u3001\u304a\u554f\u3044\u5408\u308f\u305b\u30d5\u30a9\u30fc\u30e0<\/a>\u304b\u3089\u304a\u6c17\u8efd\u306b\u3054\u76f8\u8ac7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n
        <\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"
        \u3053\u3093\u306b\u3061\u306f\u3001\u682a\u5f0f\u4f1a\u793e\u30d5\u30a1\u30b9\u30c8\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u30d5\u30eb\u30b9\u30bf\u30c3\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u3001\u72ec\u8eab\u8cb4\u65cfFire\u3067\u3059\u3002 \u5148\u65e5\u306e\u30c4\u30fc\u30ea\u30f3\u30b0\u3067\u5c71\u9053\u3092\u8d70\u3063\u3066\u3044\u305f\u3068\u304d\u3001\u30ca\u30d3\u30a2\u30d7\u30ea\u304c\u570f\u5916\u3067\u56fa\u307e\u3063\u305f\u3093\u3067\u3059\u3002\u5730\u56f3\u306f\u8868\u793a\u3055\u308c\u306a\u3044\u3001\u30ea\u30eb\u30fc\u30c8\u3082\u3055\u308c\u306a\u3044\u3001\u753b\u9762\u306b\u306f\u4f55\u306e\u30e1\u30c3 […]<\/p>\n","protected":false},"author":20,"featured_media":9886,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[13],"tags":[741,694,23],"class_list":["post-9841","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-frontend","tag-ai","tag-next-js","tag-23"],"acf":[],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/fastcoding.jp\/blog\/wp-content\/uploads\/2026\/06\/791e4883d41fc641c0384df2a8dde0de.png","jetpack_sharing_enabled":true,"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/posts\/9841","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/comments?post=9841"}],"version-history":[{"count":2,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/posts\/9841\/revisions"}],"predecessor-version":[{"id":9888,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/posts\/9841\/revisions\/9888"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/media\/9886"}],"wp:attachment":[{"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/media?parent=9841"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/categories?post=9841"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fastcoding.jp\/blog\/wp-json\/wp\/v2\/tags?post=9841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}