https://web-site-38o.pages.dev In-depth technical articles on Claude Code, MCP, agent development, Rust, and embedded systems. https://web-site-38o.pages.dev/articles/powershell-bash-variable-expansion-where-object/ Why PowerShell commands with Where-Object and $_ break when launched through Bash, and how to avoid cross-shell variable expansion bugs. en Tue, 30 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/powershell-bash-variable-expansion-where-object/ https://web-site-38o.pages.dev/ja/articles/powershell-bash-variable-expansion-where-object/ BashやGit BashからPowerShellのWhere-Objectを呼ぶ時に、$_や$変数が先に展開されて壊れる原因と回避策を解説します。 ja Tue, 30 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/powershell-bash-variable-expansion-where-object/ https://web-site-38o.pages.dev/articles/typescript-vscode-cannot-find-settimeout-tsc-passes/ Why VS Code TypeScript can report missing Node globals while tsc passes, and how explicit types: node fixes the language server. en Mon, 29 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/typescript-vscode-cannot-find-settimeout-tsc-passes/ https://web-site-38o.pages.dev/ja/articles/typescript-vscode-cannot-find-settimeout-tsc-passes/ TypeScriptでtscは通るのにVS CodeだけNode.jsのグローバル型を見失う時に、types: [node]で直す理由を解説します。 ja Mon, 29 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/typescript-vscode-cannot-find-settimeout-tsc-passes/ https://web-site-38o.pages.dev/articles/windows-path-containment-validation-nodejs/ How to validate that a user path stays inside a root directory on Windows without being fooled by drive-relative, UNC, case, or traversal paths. en Sun, 28 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/windows-path-containment-validation-nodejs/ https://web-site-38o.pages.dev/ja/articles/windows-path-containment-validation-nodejs/ Windowsでユーザー指定パスがroot配下にあるかを、drive-relative、UNC、大小文字、.. traversalに騙されず検証する方法です。 ja Sun, 28 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/windows-path-containment-validation-nodejs/ https://web-site-38o.pages.dev/articles/nextjs-localstorage-hydration-guard-usehooks-ts/ How to avoid Next.js localStorage hydration bugs with usehooks-ts, typed defaults, dependency arrays, and a guard for effects derived from stored values. en Sat, 27 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/nextjs-localstorage-hydration-guard-usehooks-ts/ https://web-site-38o.pages.dev/ja/articles/nextjs-localstorage-hydration-guard-usehooks-ts/ Next.jsでusehooks-tsのuseLocalStorageを使う時に、hydration前のdefault値でeffectが走る問題とguardの入れ方を解説します。 ja Sat, 27 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/nextjs-localstorage-hydration-guard-usehooks-ts/ https://web-site-38o.pages.dev/articles/git-bash-json-backslash-escaping-windows/ Why Windows backslashes can turn into tabs when writing JSON through Git Bash inline commands, and why file-based scripts are safer. en Fri, 26 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/git-bash-json-backslash-escaping-windows/ https://web-site-38o.pages.dev/ja/articles/git-bash-json-backslash-escaping-windows/ Git BashでWindowsパス入りJSONを書く時に、バックスラッシュがタブ化する問題と、script fileに逃がす安全策を解説します。 ja Fri, 26 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/git-bash-json-backslash-escaping-windows/ https://web-site-38o.pages.dev/articles/windows-onedrive-node-modules-junction/ How to keep a Node.js project inside OneDrive while moving node_modules to an external folder with a Windows junction. en Thu, 25 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/windows-onedrive-node-modules-junction/ https://web-site-38o.pages.dev/ja/articles/windows-onedrive-node-modules-junction/ WindowsのOneDrive配下でNode.js開発が壊れる時に、node_modulesを外部フォルダへ移してjunctionで戻す手順を解説します。 ja Thu, 25 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/windows-onedrive-node-modules-junction/ https://web-site-38o.pages.dev/articles/nextjs-routes-manifest-missing-parallel-build/ A practical guide to diagnosing missing .next/routes-manifest.json errors caused by concurrent next build processes writing to the same .next directory. en Thu, 25 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/nextjs-routes-manifest-missing-parallel-build/ https://web-site-38o.pages.dev/ja/articles/nextjs-routes-manifest-missing-parallel-build/ Next.jsの.next/routes-manifest.json欠落エラーが、設定ミスではなく同じ.nextへ並列next buildした競合で起きるケースを解説します。 ja Thu, 25 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/nextjs-routes-manifest-missing-parallel-build/ https://web-site-38o.pages.dev/articles/powershell-node-modules-junction-new-item/ Why PowerShell New-Item -ItemType Junction is safer than mklink for node_modules junctions, especially in Unicode Windows paths. en Wed, 24 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/powershell-node-modules-junction-new-item/ https://web-site-38o.pages.dev/ja/articles/powershell-node-modules-junction-new-item/ Windowsでnode_modules junctionを作る時に、mklinkではなくPowerShellのNew-Item -ItemType Junctionを使う理由を解説します。 ja Wed, 24 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/powershell-node-modules-junction-new-item/ https://web-site-38o.pages.dev/articles/mcp-stdio-server-logging-stderr/ Why MCP stdio servers should avoid console.log, keep stdout clean for JSON-RPC, and send diagnostic logs to stderr instead. en Wed, 24 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/mcp-stdio-server-logging-stderr/ https://web-site-38o.pages.dev/ja/articles/mcp-stdio-server-logging-stderr/ MCP stdioサーバーでconsole.logを避け、ログをstderrへ出すべき理由を、stdoutがJSON-RPC通信路になる仕組みから解説します。 ja Wed, 24 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/mcp-stdio-server-logging-stderr/ https://web-site-38o.pages.dev/articles/vite-node-build-post-emit-crash-check/ How to distinguish a real Vite build failure from a Windows post-emit crash by cleaning dist and checking fresh generated files. en Tue, 23 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/vite-node-build-post-emit-crash-check/ https://web-site-38o.pages.dev/ja/articles/vite-node-build-post-emit-crash-check/ WindowsでVite buildがemit後にクラッシュする時に、古いdistを成功扱いしないための鮮度チェック手順を解説します。 ja Tue, 23 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/vite-node-build-post-emit-crash-check/ https://web-site-38o.pages.dev/articles/mcp-markdown-knowledge-server-design/ How to design an MCP server for a Markdown knowledge base, why raw Markdown is better than HTML, and how to share one source across clients. en Tue, 23 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/mcp-markdown-knowledge-server-design/ https://web-site-38o.pages.dev/ja/articles/mcp-markdown-knowledge-server-design/ MCPサーバーでMarkdown知識ベースを扱うとき、HTMLへ変換せずraw Markdownを返す設計がなぜ保守しやすいかを解説します。 ja Tue, 23 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/mcp-markdown-knowledge-server-design/ https://web-site-38o.pages.dev/articles/next-dev-css-parse-error-node-env-production/ Why next build passes but next dev fails with a CSS parse error in Next.js, how to detect NODE_ENV pollution, and how to fix it for good. en Mon, 22 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/next-dev-css-parse-error-node-env-production/ https://web-site-38o.pages.dev/ja/articles/next-dev-css-parse-error-node-env-production/ Next.jsでnext buildは通るのにnext devだけCSSパースエラーになる原因と、NODE_ENV汚染の調べ方・直し方を解説します。 ja Mon, 22 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/next-dev-css-parse-error-node-env-production/ https://web-site-38o.pages.dev/articles/cloudflare-pages-git-vs-direct-upload/ How to choose between Cloudflare Pages Git integration and Wrangler Direct Upload before project creation, and why the choice affects deployment workflow. en Mon, 22 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/cloudflare-pages-git-vs-direct-upload/ https://web-site-38o.pages.dev/ja/articles/cloudflare-pages-git-vs-direct-upload/ Cloudflare PagesのGit連携とWrangler Direct Uploadの違い、production/previewの扱い、選び方を解説します。 ja Mon, 22 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/cloudflare-pages-git-vs-direct-upload/ https://web-site-38o.pages.dev/articles/nextjs-static-export-pitfalls/ Five common gotchas when exporting a Next.js 15 app with output: export — force-static metadata routes, no next/og, trailingSlash, and next/image — with fixes. en Sun, 21 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/nextjs-static-export-pitfalls/ https://web-site-38o.pages.dev/ja/articles/nextjs-static-export-pitfalls/ Next.js 15をoutput: exportで静的書き出しする際にハマるforce-static必須・next/og非対応・trailingSlash・next/imageなど5つの罠と回避策を実例で解説します。 ja Sun, 21 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/nextjs-static-export-pitfalls/ https://web-site-38o.pages.dev/articles/claude-code-mcp-config-not-loading/ A focused checklist for Claude Code MCP servers that do not appear or do not respond after editing configuration. en Sun, 21 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/articles/claude-code-mcp-config-not-loading/ https://web-site-38o.pages.dev/ja/articles/claude-code-mcp-config-not-loading/ Claude CodeでMCPサーバーを設定したのに出ない時に、設定場所、絶対パス、再起動、mcp__ツール名を確認する手順です。 ja Sun, 21 Jun 2026 00:00:00 GMT https://web-site-38o.pages.dev/ja/articles/claude-code-mcp-config-not-loading/