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<p>このドキュメントは、次のメジャーリリースで予定している破壊的変更と、アプリケーション、サンプル、ローカル開発環境で必要になる最小限の移行作業をまとめたものです。</p>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="破壊的変更">破壊的変更<a href="#破壊的変更" class="hash-link" aria-label="破壊的変更 への直接リンク" title="破壊的変更 への直接リンク" translate="no"></a></h2>
<table><thead><tr><th>変更</th><th>影響を受けるユーザー</th><th>必要な対応</th></tr></thead><tbody><tr><td><code>ESM-only</code> パッケージ</td><td><code>require(&#x27;@pdfme/...&#x27;)</code> を使っているユーザー</td><td><code>import</code> / <code>export</code> 構文へ移行</td></tr><tr><td><code>Node 20+</code> 最低要件</td><td>Node 16 / 18 ユーザー</td><td>Node 20 LTS 以降へ更新</td></tr><tr><td>内部 <code>dist/*</code> import 廃止</td><td><code>@pdfme/*/dist/...</code><code>@pdfme/*/cjs/src/...</code> を直接 import しているユーザー</td><td>package root の public export のみを使用</td></tr></tbody></table>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="サポートポリシー">サポートポリシー<a href="#サポートポリシー" class="hash-link" aria-label="サポートポリシー への直接リンク" title="サポートポリシー への直接リンク" translate="no"></a></h2>
<table><thead><tr><th>項目</th><th>方針</th></tr></thead><tbody><tr><td>ランタイム</td><td>Node 20+</td></tr><tr><td>ブラウザ向けターゲット</td><td><code>es2020</code></td></tr><tr><td>モジュール形式</td><td><code>ESM-only</code></td></tr></tbody></table>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="移行方法">移行方法<a href="#移行方法" class="hash-link" aria-label="移行方法 への直接リンク" title="移行方法 への直接リンク" translate="no"></a></h2>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="commonjs-から-esm-へ">CommonJS から ESM へ<a href="#commonjs-から-esm-へ" class="hash-link" aria-label="CommonJS から ESM へ への直接リンク" title="CommonJS から ESM へ への直接リンク" translate="no"></a></h3>
<p>変更前:</p>
<div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">const</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> </span><span class="token constant" style="color:rgb(130, 170, 255)">BLANK_PDF</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token function" style="color:rgb(130, 170, 255)">require</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;@pdfme/common&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">const</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> generate </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token function" style="color:rgb(130, 170, 255)">require</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;@pdfme/generator&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><br></span></code></pre></div></div>
<p>変更後:</p>
<div class="language-ts codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-ts codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> </span><span class="token constant" style="color:rgb(130, 170, 255)">BLANK_PDF</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;@pdfme/common&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> generate </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;@pdfme/generator&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><br></span></code></pre></div></div>
<p>Node.js で ESM からファイルを書き出す場合は、<code>__dirname</code> の代わりに <code>fileURLToPath(import.meta.url)</code> を使います。</p>
<div class="language-ts codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-ts codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> fs </span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;node:fs&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> path </span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;node:path&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> fileURLToPath </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;node:url&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">const</span><span class="token plain"> __filename </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token function" style="color:rgb(130, 170, 255)">fileURLToPath</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token keyword" style="font-style:italic">import</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">meta</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">url</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">const</span><span class="token plain"> __dirname </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> path</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">dirname</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">__filename</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><br></span></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="パッケージ内部パスの廃止">パッケージ内部パスの廃止<a href="#パッケージ内部パスの廃止" class="hash-link" aria-label="パッケージ内部パスの廃止 への直接リンク" title="パッケージ内部パスの廃止 への直接リンク" translate="no"></a></h3>
<p>変更前:</p>
<div class="language-ts codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-ts codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> generate </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;@pdfme/generator/cjs/src/index.js&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> pdf2img </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;@pdfme/converter/cjs/src/index.node.js&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><br></span></code></pre></div></div>
<p>変更後:</p>
<div class="language-ts codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_QJqH"><pre tabindex="0" class="prism-code language-ts codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> generate </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;@pdfme/generator&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">import</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> pdf2img </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">from</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;@pdfme/converter&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><br></span></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="node-20">Node 20+<a href="#node-20" class="hash-link" aria-label="Node 20+ への直接リンク" title="Node 20+ への直接リンク" translate="no"></a></h3>
<p>次のメジャーリリースを採用する前に、ローカル開発環境と CI を Node 20 LTS 以降へ更新してください。</p>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="メンテナー向けチェックリスト">メンテナー向けチェックリスト<a href="#メンテナー向けチェックリスト" class="hash-link" aria-label="メンテナー向けチェックリスト への直接リンク" title="メンテナー向けチェックリスト への直接リンク" translate="no"></a></h2>
<ul>
<li class="">リリース前に GitHub Discussions または Issue で方針を告知する。</li>
<li class="">examples、docs、playground を public export のみ使う形に更新する。</li>
<li class="">Node 向けサンプルから <code>require()</code> を段階的に除去する。</li>
<li class="">ドキュメントに内部 <code>dist/*</code> import が残っていないことを確認する。</li>
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