{
  "url": "https://unifast.dev/ja/docs/packages/node/reading-time/",
  "locale": "ja",
  "title": "readingTime()",
  "description": "ドキュメントの読了時間を推定して compile の結果に含めます。",
  "section": "packages",
  "body": "```ts\nimport { readingTime } from \"@unifast/node\";\n```\n\n## シグネチャ\n\n```ts\nfunction readingTime(options?: ReadingTimePluginOptions): UnifastPlugin\n```\n\n## パラメータ\n\n### options?\n\n読了時間の推定設定。\n\n| プロパティ | 型 | デフォルト | 説明 |\n|----------|------|---------|-------------|\n| `wordsPerMinute` | `number` | `200` | ラテン文字テキストの 1 分あたりの単語数 |\n| `cjkCharsPerMinute` | `number` | `500` | CJK テキストの 1 分あたりの文字数 |\n\n## 戻り値\n\nプラグインは compile の結果に `readingTime` プロパティを追加します。\n\n| プロパティ | 型 | 説明 |\n|----------|------|-------------|\n| `result.readingTime.minutes` | `number` | 分単位の推定読了時間 (最小値 1、0.5 刻みで切り上げ) |\n| `result.readingTime.words` | `number` | 単語数の合計 (ラテン単語 + CJK 文字数) |\n\n## 使い方\n\n```ts\nimport { compile, readingTime } from \"@unifast/node\";\n\nconst md = `\n# My Article\n\nThis is a short article with some content that demonstrates\nreading time estimation.\n`;\n\nconst result = compile(md, {\n  plugins: [readingTime()],\n});\n\nconsole.log(result.readingTime);\n// { minutes: 1, words: 16 }\n```\n\n## 使用例\n\n### カスタムの 1 分あたりの単語数\n\n```ts\nimport { compile, readingTime } from \"@unifast/node\";\n\nconst md = `A long article with many words...`;\n\nconst result = compile(md, {\n  plugins: [\n    readingTime({\n      wordsPerMinute: 150, // slower reading speed\n    }),\n  ],\n});\n\nconsole.log(result.readingTime.minutes);\n```\n\n### CJK コンテンツ\n\n```ts\nimport { compile, readingTime } from \"@unifast/node\";\n\nconst md = `\n# 日本語の記事\n\n今日は天気がとても良いです。公園で散歩をしました。\n`;\n\nconst result = compile(md, {\n  plugins: [\n    readingTime({\n      cjkCharsPerMinute: 400, // adjust for CJK reading speed\n    }),\n  ],\n});\n\nconsole.log(result.readingTime);\n// { minutes: 1, words: ... }\n```\n\n### ラテン文字と CJK の混在テキスト\n\n読了時間はラテン単語と CJK 文字について別々に計算され、その後に合算されます。コードブロックは単語数のカウントから除外されます。\n\n```ts\nimport { compile, readingTime } from \"@unifast/node\";\n\nconst md = `\n# Getting Started ガイド\n\nThis guide explains how to use the 設定ファイル for configuration.\n`;\n\nconst result = compile(md, {\n  plugins: [readingTime()],\n});\n\n// Latin words counted at 200 WPM, CJK characters at 500 CPM\nconsole.log(result.readingTime);\n```",
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