seiya2130

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<li data-line="0" class="code-line">型の条件チェックにより安全にプロパティやメソッド呼び出しを行うことができる</li>
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<p data-line="3" class="code-line"><span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__47544c93982d9" src="https://embed.zenn.studio/card#zenn-embedded__47544c93982d9" data-content="https%3A%2F%2Fgithub.com%2Fseiya2130%2FVueLab%2Fpull%2F10" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://github.com/seiya2130/VueLab/pull/10" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://github.com/seiya2130/VueLab/pull/10</a><br style="display:none">
<span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__01e727e726313" src="https://embed.zenn.studio/card#zenn-embedded__01e727e726313" data-content="https%3A%2F%2Ftypescript-jp.gitbook.io%2Fdeep-dive%2Ftype-system%2Ftypeguard" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://typescript-jp.gitbook.io/deep-dive/type-system/typeguard" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://typescript-jp.gitbook.io/deep-dive/type-system/typeguard</a></p>
