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<article class="md-content__inner md-typeset">
<a href="https://gitea.bnkops.com/admin/changemaker.lite/src/branch/main/mkdocs/docs/v2/development/code-style.md" title="Edit this page" class="md-content__button md-icon" rel="edit">
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<h1 id="code-style-guide">Code Style Guide<a class="headerlink" href="#code-style-guide" title="Permanent link">&para;</a></h1>
<p>Coding standards and style conventions for Changemaker Lite V2.</p>
<h2 id="overview">Overview<a class="headerlink" href="#overview" title="Permanent link">&para;</a></h2>
<p>Consistent code style improves:
- <strong>Readability:</strong> Easier to understand code
- <strong>Maintainability:</strong> Easier to modify code
- <strong>Collaboration:</strong> Reduces merge conflicts
- <strong>Quality:</strong> Catches common errors</p>
<p>This guide covers TypeScript, ESLint, Prettier, and naming conventions.</p>
<h2 id="tools">Tools<a class="headerlink" href="#tools" title="Permanent link">&para;</a></h2>
<h3 id="typescript">TypeScript<a class="headerlink" href="#typescript" title="Permanent link">&para;</a></h3>
<p><strong>Version:</strong> 5.x
<strong>Config:</strong> <code>tsconfig.json</code> (api/ and admin/)</p>
<p><strong>Strict Mode:</strong> Enabled</p>
<div class="language-json highlight"><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="p">{</span>
</span><span id="__span-0-2"><a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a><span class="w"> </span><span class="nt">&quot;compilerOptions&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-0-3"><a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a><span class="w"> </span><span class="nt">&quot;strict&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-0-4"><a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a><span class="w"> </span><span class="nt">&quot;noImplicitAny&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-0-5"><a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a><span class="w"> </span><span class="nt">&quot;strictNullChecks&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-0-6"><a id="__codelineno-0-6" name="__codelineno-0-6" href="#__codelineno-0-6"></a><span class="w"> </span><span class="nt">&quot;strictFunctionTypes&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-0-7"><a id="__codelineno-0-7" name="__codelineno-0-7" href="#__codelineno-0-7"></a><span class="w"> </span><span class="nt">&quot;strictPropertyInitialization&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-0-8"><a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a><span class="w"> </span><span class="nt">&quot;noImplicitThis&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-0-9"><a id="__codelineno-0-9" name="__codelineno-0-9" href="#__codelineno-0-9"></a><span class="w"> </span><span class="nt">&quot;alwaysStrict&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span>
</span><span id="__span-0-10"><a id="__codelineno-0-10" name="__codelineno-0-10" href="#__codelineno-0-10"></a><span class="w"> </span><span class="p">}</span>
</span><span id="__span-0-11"><a id="__codelineno-0-11" name="__codelineno-0-11" href="#__codelineno-0-11"></a><span class="p">}</span>
</span></code></pre></div>
<h3 id="eslint">ESLint<a class="headerlink" href="#eslint" title="Permanent link">&para;</a></h3>
<p><strong>Version:</strong> 8.x
<strong>Config:</strong> <code>.eslintrc.js</code> (api/ and admin/)</p>
<p><strong>Plugins:</strong>
- <code>@typescript-eslint/eslint-plugin</code>
- <code>eslint-plugin-react</code> (admin only)
- <code>eslint-plugin-react-hooks</code> (admin only)</p>
<h3 id="prettier">Prettier<a class="headerlink" href="#prettier" title="Permanent link">&para;</a></h3>
<p><strong>Version:</strong> 3.x
<strong>Config:</strong> <code>.prettierrc</code></p>
<p><strong>Format on save:</strong> Enabled (VSCode)</p>
<h2 id="typescript-configuration">TypeScript Configuration<a class="headerlink" href="#typescript-configuration" title="Permanent link">&para;</a></h2>
<h3 id="api-tsconfigjson">API tsconfig.json<a class="headerlink" href="#api-tsconfigjson" title="Permanent link">&para;</a></h3>
<div class="language-json highlight"><pre><span></span><code><span id="__span-1-1"><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a><span class="p">{</span>
</span><span id="__span-1-2"><a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a><span class="w"> </span><span class="nt">&quot;compilerOptions&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-1-3"><a id="__codelineno-1-3" name="__codelineno-1-3" href="#__codelineno-1-3"></a><span class="w"> </span><span class="nt">&quot;target&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;ES2022&quot;</span><span class="p">,</span>
</span><span id="__span-1-4"><a id="__codelineno-1-4" name="__codelineno-1-4" href="#__codelineno-1-4"></a><span class="w"> </span><span class="nt">&quot;module&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;commonjs&quot;</span><span class="p">,</span>
</span><span id="__span-1-5"><a id="__codelineno-1-5" name="__codelineno-1-5" href="#__codelineno-1-5"></a><span class="w"> </span><span class="nt">&quot;lib&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">&quot;ES2022&quot;</span><span class="p">],</span>
</span><span id="__span-1-6"><a id="__codelineno-1-6" name="__codelineno-1-6" href="#__codelineno-1-6"></a><span class="w"> </span><span class="nt">&quot;outDir&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;./dist&quot;</span><span class="p">,</span>
</span><span id="__span-1-7"><a id="__codelineno-1-7" name="__codelineno-1-7" href="#__codelineno-1-7"></a><span class="w"> </span><span class="nt">&quot;rootDir&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;./src&quot;</span><span class="p">,</span>
</span><span id="__span-1-8"><a id="__codelineno-1-8" name="__codelineno-1-8" href="#__codelineno-1-8"></a><span class="w"> </span><span class="nt">&quot;strict&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-1-9"><a id="__codelineno-1-9" name="__codelineno-1-9" href="#__codelineno-1-9"></a><span class="w"> </span><span class="nt">&quot;esModuleInterop&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-1-10"><a id="__codelineno-1-10" name="__codelineno-1-10" href="#__codelineno-1-10"></a><span class="w"> </span><span class="nt">&quot;skipLibCheck&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-1-11"><a id="__codelineno-1-11" name="__codelineno-1-11" href="#__codelineno-1-11"></a><span class="w"> </span><span class="nt">&quot;forceConsistentCasingInFileNames&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-1-12"><a id="__codelineno-1-12" name="__codelineno-1-12" href="#__codelineno-1-12"></a><span class="w"> </span><span class="nt">&quot;resolveJsonModule&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-1-13"><a id="__codelineno-1-13" name="__codelineno-1-13" href="#__codelineno-1-13"></a><span class="w"> </span><span class="nt">&quot;moduleResolution&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;node&quot;</span><span class="p">,</span>
</span><span id="__span-1-14"><a id="__codelineno-1-14" name="__codelineno-1-14" href="#__codelineno-1-14"></a><span class="w"> </span><span class="nt">&quot;types&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">&quot;node&quot;</span><span class="p">]</span>
</span><span id="__span-1-15"><a id="__codelineno-1-15" name="__codelineno-1-15" href="#__codelineno-1-15"></a><span class="w"> </span><span class="p">},</span>
</span><span id="__span-1-16"><a id="__codelineno-1-16" name="__codelineno-1-16" href="#__codelineno-1-16"></a><span class="w"> </span><span class="nt">&quot;include&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">&quot;src/**/*&quot;</span><span class="p">],</span>
</span><span id="__span-1-17"><a id="__codelineno-1-17" name="__codelineno-1-17" href="#__codelineno-1-17"></a><span class="w"> </span><span class="nt">&quot;exclude&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">&quot;node_modules&quot;</span><span class="p">,</span><span class="w"> </span><span class="s2">&quot;dist&quot;</span><span class="p">,</span><span class="w"> </span><span class="s2">&quot;**/*.test.ts&quot;</span><span class="p">]</span>
</span><span id="__span-1-18"><a id="__codelineno-1-18" name="__codelineno-1-18" href="#__codelineno-1-18"></a><span class="p">}</span>
</span></code></pre></div>
<h3 id="admin-tsconfigjson">Admin tsconfig.json<a class="headerlink" href="#admin-tsconfigjson" title="Permanent link">&para;</a></h3>
<div class="language-json highlight"><pre><span></span><code><span id="__span-2-1"><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a><span class="p">{</span>
</span><span id="__span-2-2"><a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a><span class="w"> </span><span class="nt">&quot;compilerOptions&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-2-3"><a id="__codelineno-2-3" name="__codelineno-2-3" href="#__codelineno-2-3"></a><span class="w"> </span><span class="nt">&quot;target&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;ES2020&quot;</span><span class="p">,</span>
</span><span id="__span-2-4"><a id="__codelineno-2-4" name="__codelineno-2-4" href="#__codelineno-2-4"></a><span class="w"> </span><span class="nt">&quot;useDefineForClassFields&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-2-5"><a id="__codelineno-2-5" name="__codelineno-2-5" href="#__codelineno-2-5"></a><span class="w"> </span><span class="nt">&quot;lib&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">&quot;ES2020&quot;</span><span class="p">,</span><span class="w"> </span><span class="s2">&quot;DOM&quot;</span><span class="p">,</span><span class="w"> </span><span class="s2">&quot;DOM.Iterable&quot;</span><span class="p">],</span>
</span><span id="__span-2-6"><a id="__codelineno-2-6" name="__codelineno-2-6" href="#__codelineno-2-6"></a><span class="w"> </span><span class="nt">&quot;module&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;ESNext&quot;</span><span class="p">,</span>
</span><span id="__span-2-7"><a id="__codelineno-2-7" name="__codelineno-2-7" href="#__codelineno-2-7"></a><span class="w"> </span><span class="nt">&quot;skipLibCheck&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-2-8"><a id="__codelineno-2-8" name="__codelineno-2-8" href="#__codelineno-2-8"></a><span class="w"> </span><span class="nt">&quot;moduleResolution&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;bundler&quot;</span><span class="p">,</span>
</span><span id="__span-2-9"><a id="__codelineno-2-9" name="__codelineno-2-9" href="#__codelineno-2-9"></a><span class="w"> </span><span class="nt">&quot;allowImportingTsExtensions&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-2-10"><a id="__codelineno-2-10" name="__codelineno-2-10" href="#__codelineno-2-10"></a><span class="w"> </span><span class="nt">&quot;resolveJsonModule&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-2-11"><a id="__codelineno-2-11" name="__codelineno-2-11" href="#__codelineno-2-11"></a><span class="w"> </span><span class="nt">&quot;isolatedModules&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-2-12"><a id="__codelineno-2-12" name="__codelineno-2-12" href="#__codelineno-2-12"></a><span class="w"> </span><span class="nt">&quot;noEmit&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-2-13"><a id="__codelineno-2-13" name="__codelineno-2-13" href="#__codelineno-2-13"></a><span class="w"> </span><span class="nt">&quot;jsx&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;react-jsx&quot;</span><span class="p">,</span>
</span><span id="__span-2-14"><a id="__codelineno-2-14" name="__codelineno-2-14" href="#__codelineno-2-14"></a><span class="w"> </span><span class="nt">&quot;strict&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-2-15"><a id="__codelineno-2-15" name="__codelineno-2-15" href="#__codelineno-2-15"></a><span class="w"> </span><span class="nt">&quot;noUnusedLocals&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-2-16"><a id="__codelineno-2-16" name="__codelineno-2-16" href="#__codelineno-2-16"></a><span class="w"> </span><span class="nt">&quot;noUnusedParameters&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-2-17"><a id="__codelineno-2-17" name="__codelineno-2-17" href="#__codelineno-2-17"></a><span class="w"> </span><span class="nt">&quot;noFallthroughCasesInSwitch&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-2-18"><a id="__codelineno-2-18" name="__codelineno-2-18" href="#__codelineno-2-18"></a><span class="w"> </span><span class="nt">&quot;types&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">&quot;vite/client&quot;</span><span class="p">]</span>
</span><span id="__span-2-19"><a id="__codelineno-2-19" name="__codelineno-2-19" href="#__codelineno-2-19"></a><span class="w"> </span><span class="p">},</span>
</span><span id="__span-2-20"><a id="__codelineno-2-20" name="__codelineno-2-20" href="#__codelineno-2-20"></a><span class="w"> </span><span class="nt">&quot;include&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">&quot;src&quot;</span><span class="p">],</span>
</span><span id="__span-2-21"><a id="__codelineno-2-21" name="__codelineno-2-21" href="#__codelineno-2-21"></a><span class="w"> </span><span class="nt">&quot;references&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[{</span><span class="w"> </span><span class="nt">&quot;path&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;./tsconfig.node.json&quot;</span><span class="w"> </span><span class="p">}]</span>
</span><span id="__span-2-22"><a id="__codelineno-2-22" name="__codelineno-2-22" href="#__codelineno-2-22"></a><span class="p">}</span>
</span></code></pre></div>
<h2 id="eslint-rules">ESLint Rules<a class="headerlink" href="#eslint-rules" title="Permanent link">&para;</a></h2>
<h3 id="api-eslintrcjs">API .eslintrc.js<a class="headerlink" href="#api-eslintrcjs" title="Permanent link">&para;</a></h3>
<div class="language-javascript highlight"><pre><span></span><code><span id="__span-3-1"><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a><span class="nx">module</span><span class="p">.</span><span class="nx">exports</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-3-2"><a id="__codelineno-3-2" name="__codelineno-3-2" href="#__codelineno-3-2"></a><span class="w"> </span><span class="nx">parser</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;@typescript-eslint/parser&#39;</span><span class="p">,</span>
</span><span id="__span-3-3"><a id="__codelineno-3-3" name="__codelineno-3-3" href="#__codelineno-3-3"></a><span class="w"> </span><span class="nx">parserOptions</span><span class="o">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-3-4"><a id="__codelineno-3-4" name="__codelineno-3-4" href="#__codelineno-3-4"></a><span class="w"> </span><span class="nx">ecmaVersion</span><span class="o">:</span><span class="w"> </span><span class="mf">2022</span><span class="p">,</span>
</span><span id="__span-3-5"><a id="__codelineno-3-5" name="__codelineno-3-5" href="#__codelineno-3-5"></a><span class="w"> </span><span class="nx">sourceType</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;module&#39;</span><span class="p">,</span>
</span><span id="__span-3-6"><a id="__codelineno-3-6" name="__codelineno-3-6" href="#__codelineno-3-6"></a><span class="w"> </span><span class="nx">project</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;./tsconfig.json&#39;</span>
</span><span id="__span-3-7"><a id="__codelineno-3-7" name="__codelineno-3-7" href="#__codelineno-3-7"></a><span class="w"> </span><span class="p">},</span>
</span><span id="__span-3-8"><a id="__codelineno-3-8" name="__codelineno-3-8" href="#__codelineno-3-8"></a><span class="w"> </span><span class="k">extends</span><span class="o">:</span><span class="w"> </span><span class="p">[</span>
</span><span id="__span-3-9"><a id="__codelineno-3-9" name="__codelineno-3-9" href="#__codelineno-3-9"></a><span class="w"> </span><span class="s1">&#39;eslint:recommended&#39;</span><span class="p">,</span>
</span><span id="__span-3-10"><a id="__codelineno-3-10" name="__codelineno-3-10" href="#__codelineno-3-10"></a><span class="w"> </span><span class="s1">&#39;plugin:@typescript-eslint/recommended&#39;</span><span class="p">,</span>
</span><span id="__span-3-11"><a id="__codelineno-3-11" name="__codelineno-3-11" href="#__codelineno-3-11"></a><span class="w"> </span><span class="s1">&#39;plugin:@typescript-eslint/recommended-requiring-type-checking&#39;</span>
</span><span id="__span-3-12"><a id="__codelineno-3-12" name="__codelineno-3-12" href="#__codelineno-3-12"></a><span class="w"> </span><span class="p">],</span>
</span><span id="__span-3-13"><a id="__codelineno-3-13" name="__codelineno-3-13" href="#__codelineno-3-13"></a><span class="w"> </span><span class="nx">plugins</span><span class="o">:</span><span class="w"> </span><span class="p">[</span><span class="s1">&#39;@typescript-eslint&#39;</span><span class="p">],</span>
</span><span id="__span-3-14"><a id="__codelineno-3-14" name="__codelineno-3-14" href="#__codelineno-3-14"></a><span class="w"> </span><span class="nx">root</span><span class="o">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-3-15"><a id="__codelineno-3-15" name="__codelineno-3-15" href="#__codelineno-3-15"></a><span class="w"> </span><span class="nx">env</span><span class="o">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-3-16"><a id="__codelineno-3-16" name="__codelineno-3-16" href="#__codelineno-3-16"></a><span class="w"> </span><span class="nx">node</span><span class="o">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-3-17"><a id="__codelineno-3-17" name="__codelineno-3-17" href="#__codelineno-3-17"></a><span class="w"> </span><span class="nx">es2022</span><span class="o">:</span><span class="w"> </span><span class="kc">true</span>
</span><span id="__span-3-18"><a id="__codelineno-3-18" name="__codelineno-3-18" href="#__codelineno-3-18"></a><span class="w"> </span><span class="p">},</span>
</span><span id="__span-3-19"><a id="__codelineno-3-19" name="__codelineno-3-19" href="#__codelineno-3-19"></a><span class="w"> </span><span class="nx">rules</span><span class="o">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-3-20"><a id="__codelineno-3-20" name="__codelineno-3-20" href="#__codelineno-3-20"></a><span class="w"> </span><span class="c1">// TypeScript</span>
</span><span id="__span-3-21"><a id="__codelineno-3-21" name="__codelineno-3-21" href="#__codelineno-3-21"></a><span class="w"> </span><span class="s1">&#39;@typescript-eslint/no-explicit-any&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-3-22"><a id="__codelineno-3-22" name="__codelineno-3-22" href="#__codelineno-3-22"></a><span class="w"> </span><span class="s1">&#39;@typescript-eslint/explicit-function-return-type&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;off&#39;</span><span class="p">,</span>
</span><span id="__span-3-23"><a id="__codelineno-3-23" name="__codelineno-3-23" href="#__codelineno-3-23"></a><span class="w"> </span><span class="s1">&#39;@typescript-eslint/explicit-module-boundary-types&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;off&#39;</span><span class="p">,</span>
</span><span id="__span-3-24"><a id="__codelineno-3-24" name="__codelineno-3-24" href="#__codelineno-3-24"></a><span class="w"> </span><span class="s1">&#39;@typescript-eslint/no-unused-vars&#39;</span><span class="o">:</span><span class="w"> </span><span class="p">[</span>
</span><span id="__span-3-25"><a id="__codelineno-3-25" name="__codelineno-3-25" href="#__codelineno-3-25"></a><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-3-26"><a id="__codelineno-3-26" name="__codelineno-3-26" href="#__codelineno-3-26"></a><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">argsIgnorePattern</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;^_&#39;</span><span class="w"> </span><span class="p">}</span>
</span><span id="__span-3-27"><a id="__codelineno-3-27" name="__codelineno-3-27" href="#__codelineno-3-27"></a><span class="w"> </span><span class="p">],</span>
</span><span id="__span-3-28"><a id="__codelineno-3-28" name="__codelineno-3-28" href="#__codelineno-3-28"></a><span class="w"> </span><span class="s1">&#39;@typescript-eslint/no-floating-promises&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-3-29"><a id="__codelineno-3-29" name="__codelineno-3-29" href="#__codelineno-3-29"></a><span class="w"> </span><span class="s1">&#39;@typescript-eslint/await-thenable&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-3-30"><a id="__codelineno-3-30" name="__codelineno-3-30" href="#__codelineno-3-30"></a>
</span><span id="__span-3-31"><a id="__codelineno-3-31" name="__codelineno-3-31" href="#__codelineno-3-31"></a><span class="w"> </span><span class="c1">// General</span>
</span><span id="__span-3-32"><a id="__codelineno-3-32" name="__codelineno-3-32" href="#__codelineno-3-32"></a><span class="w"> </span><span class="s1">&#39;no-console&#39;</span><span class="o">:</span><span class="w"> </span><span class="p">[</span><span class="s1">&#39;warn&#39;</span><span class="p">,</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">allow</span><span class="o">:</span><span class="w"> </span><span class="p">[</span><span class="s1">&#39;warn&#39;</span><span class="p">,</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">]</span><span class="w"> </span><span class="p">}],</span>
</span><span id="__span-3-33"><a id="__codelineno-3-33" name="__codelineno-3-33" href="#__codelineno-3-33"></a><span class="w"> </span><span class="s1">&#39;no-debugger&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-3-34"><a id="__codelineno-3-34" name="__codelineno-3-34" href="#__codelineno-3-34"></a><span class="w"> </span><span class="s1">&#39;prefer-const&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-3-35"><a id="__codelineno-3-35" name="__codelineno-3-35" href="#__codelineno-3-35"></a><span class="w"> </span><span class="s1">&#39;no-var&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-3-36"><a id="__codelineno-3-36" name="__codelineno-3-36" href="#__codelineno-3-36"></a><span class="w"> </span><span class="s1">&#39;eqeqeq&#39;</span><span class="o">:</span><span class="w"> </span><span class="p">[</span><span class="s1">&#39;error&#39;</span><span class="p">,</span><span class="w"> </span><span class="s1">&#39;always&#39;</span><span class="p">],</span>
</span><span id="__span-3-37"><a id="__codelineno-3-37" name="__codelineno-3-37" href="#__codelineno-3-37"></a><span class="w"> </span><span class="s1">&#39;curly&#39;</span><span class="o">:</span><span class="w"> </span><span class="p">[</span><span class="s1">&#39;error&#39;</span><span class="p">,</span><span class="w"> </span><span class="s1">&#39;all&#39;</span><span class="p">]</span>
</span><span id="__span-3-38"><a id="__codelineno-3-38" name="__codelineno-3-38" href="#__codelineno-3-38"></a><span class="w"> </span><span class="p">}</span>
</span><span id="__span-3-39"><a id="__codelineno-3-39" name="__codelineno-3-39" href="#__codelineno-3-39"></a><span class="p">};</span>
</span></code></pre></div>
<h3 id="admin-eslintrcjs">Admin .eslintrc.js<a class="headerlink" href="#admin-eslintrcjs" title="Permanent link">&para;</a></h3>
<div class="language-javascript highlight"><pre><span></span><code><span id="__span-4-1"><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a><span class="nx">module</span><span class="p">.</span><span class="nx">exports</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-4-2"><a id="__codelineno-4-2" name="__codelineno-4-2" href="#__codelineno-4-2"></a><span class="w"> </span><span class="nx">parser</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;@typescript-eslint/parser&#39;</span><span class="p">,</span>
</span><span id="__span-4-3"><a id="__codelineno-4-3" name="__codelineno-4-3" href="#__codelineno-4-3"></a><span class="w"> </span><span class="nx">parserOptions</span><span class="o">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-4-4"><a id="__codelineno-4-4" name="__codelineno-4-4" href="#__codelineno-4-4"></a><span class="w"> </span><span class="nx">ecmaVersion</span><span class="o">:</span><span class="w"> </span><span class="mf">2020</span><span class="p">,</span>
</span><span id="__span-4-5"><a id="__codelineno-4-5" name="__codelineno-4-5" href="#__codelineno-4-5"></a><span class="w"> </span><span class="nx">sourceType</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;module&#39;</span><span class="p">,</span>
</span><span id="__span-4-6"><a id="__codelineno-4-6" name="__codelineno-4-6" href="#__codelineno-4-6"></a><span class="w"> </span><span class="nx">ecmaFeatures</span><span class="o">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-4-7"><a id="__codelineno-4-7" name="__codelineno-4-7" href="#__codelineno-4-7"></a><span class="w"> </span><span class="nx">jsx</span><span class="o">:</span><span class="w"> </span><span class="kc">true</span>
</span><span id="__span-4-8"><a id="__codelineno-4-8" name="__codelineno-4-8" href="#__codelineno-4-8"></a><span class="w"> </span><span class="p">},</span>
</span><span id="__span-4-9"><a id="__codelineno-4-9" name="__codelineno-4-9" href="#__codelineno-4-9"></a><span class="w"> </span><span class="nx">project</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;./tsconfig.json&#39;</span>
</span><span id="__span-4-10"><a id="__codelineno-4-10" name="__codelineno-4-10" href="#__codelineno-4-10"></a><span class="w"> </span><span class="p">},</span>
</span><span id="__span-4-11"><a id="__codelineno-4-11" name="__codelineno-4-11" href="#__codelineno-4-11"></a><span class="w"> </span><span class="k">extends</span><span class="o">:</span><span class="w"> </span><span class="p">[</span>
</span><span id="__span-4-12"><a id="__codelineno-4-12" name="__codelineno-4-12" href="#__codelineno-4-12"></a><span class="w"> </span><span class="s1">&#39;eslint:recommended&#39;</span><span class="p">,</span>
</span><span id="__span-4-13"><a id="__codelineno-4-13" name="__codelineno-4-13" href="#__codelineno-4-13"></a><span class="w"> </span><span class="s1">&#39;plugin:react/recommended&#39;</span><span class="p">,</span>
</span><span id="__span-4-14"><a id="__codelineno-4-14" name="__codelineno-4-14" href="#__codelineno-4-14"></a><span class="w"> </span><span class="s1">&#39;plugin:react-hooks/recommended&#39;</span><span class="p">,</span>
</span><span id="__span-4-15"><a id="__codelineno-4-15" name="__codelineno-4-15" href="#__codelineno-4-15"></a><span class="w"> </span><span class="s1">&#39;plugin:@typescript-eslint/recommended&#39;</span>
</span><span id="__span-4-16"><a id="__codelineno-4-16" name="__codelineno-4-16" href="#__codelineno-4-16"></a><span class="w"> </span><span class="p">],</span>
</span><span id="__span-4-17"><a id="__codelineno-4-17" name="__codelineno-4-17" href="#__codelineno-4-17"></a><span class="w"> </span><span class="nx">plugins</span><span class="o">:</span><span class="w"> </span><span class="p">[</span><span class="s1">&#39;react&#39;</span><span class="p">,</span><span class="w"> </span><span class="s1">&#39;react-hooks&#39;</span><span class="p">,</span><span class="w"> </span><span class="s1">&#39;@typescript-eslint&#39;</span><span class="p">],</span>
</span><span id="__span-4-18"><a id="__codelineno-4-18" name="__codelineno-4-18" href="#__codelineno-4-18"></a><span class="w"> </span><span class="nx">root</span><span class="o">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-4-19"><a id="__codelineno-4-19" name="__codelineno-4-19" href="#__codelineno-4-19"></a><span class="w"> </span><span class="nx">env</span><span class="o">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-4-20"><a id="__codelineno-4-20" name="__codelineno-4-20" href="#__codelineno-4-20"></a><span class="w"> </span><span class="nx">browser</span><span class="o">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-4-21"><a id="__codelineno-4-21" name="__codelineno-4-21" href="#__codelineno-4-21"></a><span class="w"> </span><span class="nx">es2020</span><span class="o">:</span><span class="w"> </span><span class="kc">true</span>
</span><span id="__span-4-22"><a id="__codelineno-4-22" name="__codelineno-4-22" href="#__codelineno-4-22"></a><span class="w"> </span><span class="p">},</span>
</span><span id="__span-4-23"><a id="__codelineno-4-23" name="__codelineno-4-23" href="#__codelineno-4-23"></a><span class="w"> </span><span class="nx">settings</span><span class="o">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-4-24"><a id="__codelineno-4-24" name="__codelineno-4-24" href="#__codelineno-4-24"></a><span class="w"> </span><span class="nx">react</span><span class="o">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-4-25"><a id="__codelineno-4-25" name="__codelineno-4-25" href="#__codelineno-4-25"></a><span class="w"> </span><span class="nx">version</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;detect&#39;</span>
</span><span id="__span-4-26"><a id="__codelineno-4-26" name="__codelineno-4-26" href="#__codelineno-4-26"></a><span class="w"> </span><span class="p">}</span>
</span><span id="__span-4-27"><a id="__codelineno-4-27" name="__codelineno-4-27" href="#__codelineno-4-27"></a><span class="w"> </span><span class="p">},</span>
</span><span id="__span-4-28"><a id="__codelineno-4-28" name="__codelineno-4-28" href="#__codelineno-4-28"></a><span class="w"> </span><span class="nx">rules</span><span class="o">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-4-29"><a id="__codelineno-4-29" name="__codelineno-4-29" href="#__codelineno-4-29"></a><span class="w"> </span><span class="c1">// React</span>
</span><span id="__span-4-30"><a id="__codelineno-4-30" name="__codelineno-4-30" href="#__codelineno-4-30"></a><span class="w"> </span><span class="s1">&#39;react/react-in-jsx-scope&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;off&#39;</span><span class="p">,</span><span class="w"> </span><span class="c1">// React 17+</span>
</span><span id="__span-4-31"><a id="__codelineno-4-31" name="__codelineno-4-31" href="#__codelineno-4-31"></a><span class="w"> </span><span class="s1">&#39;react/prop-types&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;off&#39;</span><span class="p">,</span><span class="w"> </span><span class="c1">// Use TypeScript</span>
</span><span id="__span-4-32"><a id="__codelineno-4-32" name="__codelineno-4-32" href="#__codelineno-4-32"></a><span class="w"> </span><span class="s1">&#39;react-hooks/rules-of-hooks&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-4-33"><a id="__codelineno-4-33" name="__codelineno-4-33" href="#__codelineno-4-33"></a><span class="w"> </span><span class="s1">&#39;react-hooks/exhaustive-deps&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;warn&#39;</span><span class="p">,</span>
</span><span id="__span-4-34"><a id="__codelineno-4-34" name="__codelineno-4-34" href="#__codelineno-4-34"></a>
</span><span id="__span-4-35"><a id="__codelineno-4-35" name="__codelineno-4-35" href="#__codelineno-4-35"></a><span class="w"> </span><span class="c1">// TypeScript</span>
</span><span id="__span-4-36"><a id="__codelineno-4-36" name="__codelineno-4-36" href="#__codelineno-4-36"></a><span class="w"> </span><span class="s1">&#39;@typescript-eslint/no-explicit-any&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-4-37"><a id="__codelineno-4-37" name="__codelineno-4-37" href="#__codelineno-4-37"></a><span class="w"> </span><span class="s1">&#39;@typescript-eslint/explicit-function-return-type&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;off&#39;</span><span class="p">,</span>
</span><span id="__span-4-38"><a id="__codelineno-4-38" name="__codelineno-4-38" href="#__codelineno-4-38"></a><span class="w"> </span><span class="s1">&#39;@typescript-eslint/no-unused-vars&#39;</span><span class="o">:</span><span class="w"> </span><span class="p">[</span>
</span><span id="__span-4-39"><a id="__codelineno-4-39" name="__codelineno-4-39" href="#__codelineno-4-39"></a><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-4-40"><a id="__codelineno-4-40" name="__codelineno-4-40" href="#__codelineno-4-40"></a><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">argsIgnorePattern</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;^_&#39;</span><span class="w"> </span><span class="p">}</span>
</span><span id="__span-4-41"><a id="__codelineno-4-41" name="__codelineno-4-41" href="#__codelineno-4-41"></a><span class="w"> </span><span class="p">],</span>
</span><span id="__span-4-42"><a id="__codelineno-4-42" name="__codelineno-4-42" href="#__codelineno-4-42"></a>
</span><span id="__span-4-43"><a id="__codelineno-4-43" name="__codelineno-4-43" href="#__codelineno-4-43"></a><span class="w"> </span><span class="c1">// General</span>
</span><span id="__span-4-44"><a id="__codelineno-4-44" name="__codelineno-4-44" href="#__codelineno-4-44"></a><span class="w"> </span><span class="s1">&#39;no-console&#39;</span><span class="o">:</span><span class="w"> </span><span class="p">[</span><span class="s1">&#39;warn&#39;</span><span class="p">,</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">allow</span><span class="o">:</span><span class="w"> </span><span class="p">[</span><span class="s1">&#39;warn&#39;</span><span class="p">,</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">]</span><span class="w"> </span><span class="p">}],</span>
</span><span id="__span-4-45"><a id="__codelineno-4-45" name="__codelineno-4-45" href="#__codelineno-4-45"></a><span class="w"> </span><span class="s1">&#39;no-debugger&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-4-46"><a id="__codelineno-4-46" name="__codelineno-4-46" href="#__codelineno-4-46"></a><span class="w"> </span><span class="s1">&#39;prefer-const&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-4-47"><a id="__codelineno-4-47" name="__codelineno-4-47" href="#__codelineno-4-47"></a><span class="w"> </span><span class="s1">&#39;no-var&#39;</span><span class="o">:</span><span class="w"> </span><span class="s1">&#39;error&#39;</span><span class="p">,</span>
</span><span id="__span-4-48"><a id="__codelineno-4-48" name="__codelineno-4-48" href="#__codelineno-4-48"></a><span class="w"> </span><span class="s1">&#39;eqeqeq&#39;</span><span class="o">:</span><span class="w"> </span><span class="p">[</span><span class="s1">&#39;error&#39;</span><span class="p">,</span><span class="w"> </span><span class="s1">&#39;always&#39;</span><span class="p">]</span>
</span><span id="__span-4-49"><a id="__codelineno-4-49" name="__codelineno-4-49" href="#__codelineno-4-49"></a><span class="w"> </span><span class="p">}</span>
</span><span id="__span-4-50"><a id="__codelineno-4-50" name="__codelineno-4-50" href="#__codelineno-4-50"></a><span class="p">};</span>
</span></code></pre></div>
<h3 id="key-rules-explained">Key Rules Explained<a class="headerlink" href="#key-rules-explained" title="Permanent link">&para;</a></h3>
<p><strong><code>@typescript-eslint/no-explicit-any</code></strong> - Prevents <code>any</code> type
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-5-1"><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a><span class="c1">// ❌ Bad</span>
</span><span id="__span-5-2"><a id="__codelineno-5-2" name="__codelineno-5-2" href="#__codelineno-5-2"></a><span class="kd">function</span><span class="w"> </span><span class="nx">foo</span><span class="p">(</span><span class="nx">data</span><span class="o">:</span><span class="w"> </span><span class="kt">any</span><span class="p">)</span><span class="w"> </span><span class="p">{}</span>
</span><span id="__span-5-3"><a id="__codelineno-5-3" name="__codelineno-5-3" href="#__codelineno-5-3"></a>
</span><span id="__span-5-4"><a id="__codelineno-5-4" name="__codelineno-5-4" href="#__codelineno-5-4"></a><span class="c1">// ✅ Good</span>
</span><span id="__span-5-5"><a id="__codelineno-5-5" name="__codelineno-5-5" href="#__codelineno-5-5"></a><span class="kd">function</span><span class="w"> </span><span class="nx">foo</span><span class="p">(</span><span class="nx">data</span><span class="o">:</span><span class="w"> </span><span class="kt">User</span><span class="p">)</span><span class="w"> </span><span class="p">{}</span>
</span><span id="__span-5-6"><a id="__codelineno-5-6" name="__codelineno-5-6" href="#__codelineno-5-6"></a><span class="kd">function</span><span class="w"> </span><span class="nx">foo</span><span class="p">(</span><span class="nx">data</span><span class="o">:</span><span class="w"> </span><span class="kt">unknown</span><span class="p">)</span><span class="w"> </span><span class="p">{}</span><span class="w"> </span><span class="c1">// Use unknown instead</span>
</span></code></pre></div></p>
<p><strong><code>@typescript-eslint/no-unused-vars</code></strong> - Prevents unused variables
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-6-1"><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a><span class="c1">// ❌ Bad</span>
</span><span id="__span-6-2"><a id="__codelineno-6-2" name="__codelineno-6-2" href="#__codelineno-6-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">foo</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">1</span><span class="p">;</span><span class="w"> </span><span class="c1">// Never used</span>
</span><span id="__span-6-3"><a id="__codelineno-6-3" name="__codelineno-6-3" href="#__codelineno-6-3"></a>
</span><span id="__span-6-4"><a id="__codelineno-6-4" name="__codelineno-6-4" href="#__codelineno-6-4"></a><span class="c1">// ✅ Good</span>
</span><span id="__span-6-5"><a id="__codelineno-6-5" name="__codelineno-6-5" href="#__codelineno-6-5"></a><span class="kd">const</span><span class="w"> </span><span class="nx">_foo</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">1</span><span class="p">;</span><span class="w"> </span><span class="c1">// Prefix with _ to ignore</span>
</span></code></pre></div></p>
<p><strong><code>@typescript-eslint/no-floating-promises</code></strong> - Requires await/catch
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-7-1"><a id="__codelineno-7-1" name="__codelineno-7-1" href="#__codelineno-7-1"></a><span class="c1">// ❌ Bad</span>
</span><span id="__span-7-2"><a id="__codelineno-7-2" name="__codelineno-7-2" href="#__codelineno-7-2"></a><span class="nx">asyncFunction</span><span class="p">();</span><span class="w"> </span><span class="c1">// Promise not handled</span>
</span><span id="__span-7-3"><a id="__codelineno-7-3" name="__codelineno-7-3" href="#__codelineno-7-3"></a>
</span><span id="__span-7-4"><a id="__codelineno-7-4" name="__codelineno-7-4" href="#__codelineno-7-4"></a><span class="c1">// ✅ Good</span>
</span><span id="__span-7-5"><a id="__codelineno-7-5" name="__codelineno-7-5" href="#__codelineno-7-5"></a><span class="k">await</span><span class="w"> </span><span class="nx">asyncFunction</span><span class="p">();</span>
</span><span id="__span-7-6"><a id="__codelineno-7-6" name="__codelineno-7-6" href="#__codelineno-7-6"></a><span class="nx">asyncFunction</span><span class="p">().</span><span class="k">catch</span><span class="p">(</span><span class="nx">console</span><span class="p">.</span><span class="nx">error</span><span class="p">);</span>
</span><span id="__span-7-7"><a id="__codelineno-7-7" name="__codelineno-7-7" href="#__codelineno-7-7"></a><span class="ow">void</span><span class="w"> </span><span class="nx">asyncFunction</span><span class="p">();</span><span class="w"> </span><span class="c1">// Explicitly ignore</span>
</span></code></pre></div></p>
<p><strong><code>react-hooks/exhaustive-deps</code></strong> - Validates useEffect dependencies
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-8-1"><a id="__codelineno-8-1" name="__codelineno-8-1" href="#__codelineno-8-1"></a><span class="c1">// ❌ Bad</span>
</span><span id="__span-8-2"><a id="__codelineno-8-2" name="__codelineno-8-2" href="#__codelineno-8-2"></a><span class="nx">useEffect</span><span class="p">(()</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-8-3"><a id="__codelineno-8-3" name="__codelineno-8-3" href="#__codelineno-8-3"></a><span class="w"> </span><span class="nx">fetchUser</span><span class="p">(</span><span class="nx">userId</span><span class="p">);</span>
</span><span id="__span-8-4"><a id="__codelineno-8-4" name="__codelineno-8-4" href="#__codelineno-8-4"></a><span class="p">},</span><span class="w"> </span><span class="p">[]);</span><span class="w"> </span><span class="c1">// Missing userId dependency</span>
</span><span id="__span-8-5"><a id="__codelineno-8-5" name="__codelineno-8-5" href="#__codelineno-8-5"></a>
</span><span id="__span-8-6"><a id="__codelineno-8-6" name="__codelineno-8-6" href="#__codelineno-8-6"></a><span class="c1">// ✅ Good</span>
</span><span id="__span-8-7"><a id="__codelineno-8-7" name="__codelineno-8-7" href="#__codelineno-8-7"></a><span class="nx">useEffect</span><span class="p">(()</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-8-8"><a id="__codelineno-8-8" name="__codelineno-8-8" href="#__codelineno-8-8"></a><span class="w"> </span><span class="nx">fetchUser</span><span class="p">(</span><span class="nx">userId</span><span class="p">);</span>
</span><span id="__span-8-9"><a id="__codelineno-8-9" name="__codelineno-8-9" href="#__codelineno-8-9"></a><span class="p">},</span><span class="w"> </span><span class="p">[</span><span class="nx">userId</span><span class="p">]);</span>
</span></code></pre></div></p>
<h2 id="prettier-configuration">Prettier Configuration<a class="headerlink" href="#prettier-configuration" title="Permanent link">&para;</a></h2>
<h3 id="prettierrc">.prettierrc<a class="headerlink" href="#prettierrc" title="Permanent link">&para;</a></h3>
<div class="language-json highlight"><pre><span></span><code><span id="__span-9-1"><a id="__codelineno-9-1" name="__codelineno-9-1" href="#__codelineno-9-1"></a><span class="p">{</span>
</span><span id="__span-9-2"><a id="__codelineno-9-2" name="__codelineno-9-2" href="#__codelineno-9-2"></a><span class="w"> </span><span class="nt">&quot;semi&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-9-3"><a id="__codelineno-9-3" name="__codelineno-9-3" href="#__codelineno-9-3"></a><span class="w"> </span><span class="nt">&quot;singleQuote&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-9-4"><a id="__codelineno-9-4" name="__codelineno-9-4" href="#__codelineno-9-4"></a><span class="w"> </span><span class="nt">&quot;tabWidth&quot;</span><span class="p">:</span><span class="w"> </span><span class="mi">2</span><span class="p">,</span>
</span><span id="__span-9-5"><a id="__codelineno-9-5" name="__codelineno-9-5" href="#__codelineno-9-5"></a><span class="w"> </span><span class="nt">&quot;useTabs&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">false</span><span class="p">,</span>
</span><span id="__span-9-6"><a id="__codelineno-9-6" name="__codelineno-9-6" href="#__codelineno-9-6"></a><span class="w"> </span><span class="nt">&quot;trailingComma&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;es5&quot;</span><span class="p">,</span>
</span><span id="__span-9-7"><a id="__codelineno-9-7" name="__codelineno-9-7" href="#__codelineno-9-7"></a><span class="w"> </span><span class="nt">&quot;printWidth&quot;</span><span class="p">:</span><span class="w"> </span><span class="mi">100</span><span class="p">,</span>
</span><span id="__span-9-8"><a id="__codelineno-9-8" name="__codelineno-9-8" href="#__codelineno-9-8"></a><span class="w"> </span><span class="nt">&quot;arrowParens&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;avoid&quot;</span><span class="p">,</span>
</span><span id="__span-9-9"><a id="__codelineno-9-9" name="__codelineno-9-9" href="#__codelineno-9-9"></a><span class="w"> </span><span class="nt">&quot;endOfLine&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;lf&quot;</span>
</span><span id="__span-9-10"><a id="__codelineno-9-10" name="__codelineno-9-10" href="#__codelineno-9-10"></a><span class="p">}</span>
</span></code></pre></div>
<h3 id="prettierignore">.prettierignore<a class="headerlink" href="#prettierignore" title="Permanent link">&para;</a></h3>
<div class="language-text highlight"><pre><span></span><code><span id="__span-10-1"><a id="__codelineno-10-1" name="__codelineno-10-1" href="#__codelineno-10-1"></a>node_modules
</span><span id="__span-10-2"><a id="__codelineno-10-2" name="__codelineno-10-2" href="#__codelineno-10-2"></a>dist
</span><span id="__span-10-3"><a id="__codelineno-10-3" name="__codelineno-10-3" href="#__codelineno-10-3"></a>build
</span><span id="__span-10-4"><a id="__codelineno-10-4" name="__codelineno-10-4" href="#__codelineno-10-4"></a>coverage
</span><span id="__span-10-5"><a id="__codelineno-10-5" name="__codelineno-10-5" href="#__codelineno-10-5"></a>.vite
</span><span id="__span-10-6"><a id="__codelineno-10-6" name="__codelineno-10-6" href="#__codelineno-10-6"></a>.cache
</span><span id="__span-10-7"><a id="__codelineno-10-7" name="__codelineno-10-7" href="#__codelineno-10-7"></a>*.min.js
</span><span id="__span-10-8"><a id="__codelineno-10-8" name="__codelineno-10-8" href="#__codelineno-10-8"></a>*.min.css
</span><span id="__span-10-9"><a id="__codelineno-10-9" name="__codelineno-10-9" href="#__codelineno-10-9"></a>package-lock.json
</span></code></pre></div>
<h3 id="format-commands">Format Commands<a class="headerlink" href="#format-commands" title="Permanent link">&para;</a></h3>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-11-1"><a id="__codelineno-11-1" name="__codelineno-11-1" href="#__codelineno-11-1"></a><span class="c1"># Format all files</span>
</span><span id="__span-11-2"><a id="__codelineno-11-2" name="__codelineno-11-2" href="#__codelineno-11-2"></a>npm<span class="w"> </span>run<span class="w"> </span>format
</span><span id="__span-11-3"><a id="__codelineno-11-3" name="__codelineno-11-3" href="#__codelineno-11-3"></a>
</span><span id="__span-11-4"><a id="__codelineno-11-4" name="__codelineno-11-4" href="#__codelineno-11-4"></a><span class="c1"># Check formatting (CI)</span>
</span><span id="__span-11-5"><a id="__codelineno-11-5" name="__codelineno-11-5" href="#__codelineno-11-5"></a>npm<span class="w"> </span>run<span class="w"> </span>format:check
</span><span id="__span-11-6"><a id="__codelineno-11-6" name="__codelineno-11-6" href="#__codelineno-11-6"></a>
</span><span id="__span-11-7"><a id="__codelineno-11-7" name="__codelineno-11-7" href="#__codelineno-11-7"></a><span class="c1"># Format specific file</span>
</span><span id="__span-11-8"><a id="__codelineno-11-8" name="__codelineno-11-8" href="#__codelineno-11-8"></a>npx<span class="w"> </span>prettier<span class="w"> </span>--write<span class="w"> </span>src/modules/auth/auth.service.ts
</span></code></pre></div>
<h2 id="naming-conventions">Naming Conventions<a class="headerlink" href="#naming-conventions" title="Permanent link">&para;</a></h2>
<h3 id="files-and-directories">Files and Directories<a class="headerlink" href="#files-and-directories" title="Permanent link">&para;</a></h3>
<p><strong>Files:</strong> kebab-case
<div class="language-text highlight"><pre><span></span><code><span id="__span-12-1"><a id="__codelineno-12-1" name="__codelineno-12-1" href="#__codelineno-12-1"></a>auth.service.ts
</span><span id="__span-12-2"><a id="__codelineno-12-2" name="__codelineno-12-2" href="#__codelineno-12-2"></a>user.controller.ts
</span><span id="__span-12-3"><a id="__codelineno-12-3" name="__codelineno-12-3" href="#__codelineno-12-3"></a>campaign.routes.ts
</span><span id="__span-12-4"><a id="__codelineno-12-4" name="__codelineno-12-4" href="#__codelineno-12-4"></a>locations-page.tsx
</span></code></pre></div></p>
<p><strong>Components:</strong> PascalCase
<div class="language-text highlight"><pre><span></span><code><span id="__span-13-1"><a id="__codelineno-13-1" name="__codelineno-13-1" href="#__codelineno-13-1"></a>UserCard.tsx
</span><span id="__span-13-2"><a id="__codelineno-13-2" name="__codelineno-13-2" href="#__codelineno-13-2"></a>LoginForm.tsx
</span><span id="__span-13-3"><a id="__codelineno-13-3" name="__codelineno-13-3" href="#__codelineno-13-3"></a>MapView.tsx
</span></code></pre></div></p>
<p><strong>Test files:</strong> Match source file with <code>.test</code> or <code>.spec</code>
<div class="language-text highlight"><pre><span></span><code><span id="__span-14-1"><a id="__codelineno-14-1" name="__codelineno-14-1" href="#__codelineno-14-1"></a>auth.service.test.ts
</span><span id="__span-14-2"><a id="__codelineno-14-2" name="__codelineno-14-2" href="#__codelineno-14-2"></a>UserCard.test.tsx
</span></code></pre></div></p>
<p><strong>Directories:</strong> kebab-case
<div class="language-text highlight"><pre><span></span><code><span id="__span-15-1"><a id="__codelineno-15-1" name="__codelineno-15-1" href="#__codelineno-15-1"></a>src/modules/auth/
</span><span id="__span-15-2"><a id="__codelineno-15-2" name="__codelineno-15-2" href="#__codelineno-15-2"></a>src/components/map/
</span><span id="__span-15-3"><a id="__codelineno-15-3" name="__codelineno-15-3" href="#__codelineno-15-3"></a>src/pages/public/
</span></code></pre></div></p>
<h3 id="variables-and-functions">Variables and Functions<a class="headerlink" href="#variables-and-functions" title="Permanent link">&para;</a></h3>
<p><strong>Variables:</strong> camelCase
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-16-1"><a id="__codelineno-16-1" name="__codelineno-16-1" href="#__codelineno-16-1"></a><span class="kd">const</span><span class="w"> </span><span class="nx">userName</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s1">&#39;John&#39;</span><span class="p">;</span>
</span><span id="__span-16-2"><a id="__codelineno-16-2" name="__codelineno-16-2" href="#__codelineno-16-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">isActive</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="kc">true</span><span class="p">;</span>
</span><span id="__span-16-3"><a id="__codelineno-16-3" name="__codelineno-16-3" href="#__codelineno-16-3"></a><span class="kd">const</span><span class="w"> </span><span class="nx">totalCount</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">100</span><span class="p">;</span>
</span></code></pre></div></p>
<p><strong>Constants:</strong> UPPER_SNAKE_CASE
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-17-1"><a id="__codelineno-17-1" name="__codelineno-17-1" href="#__codelineno-17-1"></a><span class="kd">const</span><span class="w"> </span><span class="nx">API_URL</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s1">&#39;http://localhost:4000&#39;</span><span class="p">;</span>
</span><span id="__span-17-2"><a id="__codelineno-17-2" name="__codelineno-17-2" href="#__codelineno-17-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">MAX_RETRIES</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">3</span><span class="p">;</span>
</span><span id="__span-17-3"><a id="__codelineno-17-3" name="__codelineno-17-3" href="#__codelineno-17-3"></a><span class="kd">const</span><span class="w"> </span><span class="nx">DEFAULT_PAGE_SIZE</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">50</span><span class="p">;</span>
</span></code></pre></div></p>
<p><strong>Functions:</strong> camelCase
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-18-1"><a id="__codelineno-18-1" name="__codelineno-18-1" href="#__codelineno-18-1"></a><span class="kd">function</span><span class="w"> </span><span class="nx">getUserById</span><span class="p">(</span><span class="nx">id</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">)</span><span class="w"> </span><span class="p">{}</span>
</span><span id="__span-18-2"><a id="__codelineno-18-2" name="__codelineno-18-2" href="#__codelineno-18-2"></a><span class="k">async</span><span class="w"> </span><span class="kd">function</span><span class="w"> </span><span class="nx">fetchCampaigns</span><span class="p">()</span><span class="w"> </span><span class="p">{}</span>
</span><span id="__span-18-3"><a id="__codelineno-18-3" name="__codelineno-18-3" href="#__codelineno-18-3"></a><span class="kd">const</span><span class="w"> </span><span class="nx">handleClick</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">()</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="p">{};</span>
</span></code></pre></div></p>
<p><strong>Private methods:</strong> Prefix with underscore (optional)
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-19-1"><a id="__codelineno-19-1" name="__codelineno-19-1" href="#__codelineno-19-1"></a><span class="kd">class</span><span class="w"> </span><span class="nx">UserService</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-19-2"><a id="__codelineno-19-2" name="__codelineno-19-2" href="#__codelineno-19-2"></a><span class="w"> </span><span class="k">async</span><span class="w"> </span><span class="nx">getUser</span><span class="p">(</span><span class="nx">id</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">)</span><span class="w"> </span><span class="p">{}</span>
</span><span id="__span-19-3"><a id="__codelineno-19-3" name="__codelineno-19-3" href="#__codelineno-19-3"></a>
</span><span id="__span-19-4"><a id="__codelineno-19-4" name="__codelineno-19-4" href="#__codelineno-19-4"></a><span class="w"> </span><span class="k">private</span><span class="w"> </span><span class="k">async</span><span class="w"> </span><span class="nx">_hashPassword</span><span class="p">(</span><span class="nx">password</span><span class="o">:</span><span class="w"> </span><span class="kt">string</span><span class="p">)</span><span class="w"> </span><span class="p">{}</span>
</span><span id="__span-19-5"><a id="__codelineno-19-5" name="__codelineno-19-5" href="#__codelineno-19-5"></a><span class="p">}</span>
</span></code></pre></div></p>
<h3 id="types-and-interfaces">Types and Interfaces<a class="headerlink" href="#types-and-interfaces" title="Permanent link">&para;</a></h3>
<p><strong>Types/Interfaces:</strong> PascalCase
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-20-1"><a id="__codelineno-20-1" name="__codelineno-20-1" href="#__codelineno-20-1"></a><span class="kd">interface</span><span class="w"> </span><span class="nx">User</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-20-2"><a id="__codelineno-20-2" name="__codelineno-20-2" href="#__codelineno-20-2"></a><span class="w"> </span><span class="nx">id</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">;</span>
</span><span id="__span-20-3"><a id="__codelineno-20-3" name="__codelineno-20-3" href="#__codelineno-20-3"></a><span class="w"> </span><span class="nx">email</span><span class="o">:</span><span class="w"> </span><span class="kt">string</span><span class="p">;</span>
</span><span id="__span-20-4"><a id="__codelineno-20-4" name="__codelineno-20-4" href="#__codelineno-20-4"></a><span class="p">}</span>
</span><span id="__span-20-5"><a id="__codelineno-20-5" name="__codelineno-20-5" href="#__codelineno-20-5"></a>
</span><span id="__span-20-6"><a id="__codelineno-20-6" name="__codelineno-20-6" href="#__codelineno-20-6"></a><span class="kr">type</span><span class="w"> </span><span class="nx">UserRole</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s1">&#39;USER&#39;</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="s1">&#39;ADMIN&#39;</span><span class="p">;</span>
</span><span id="__span-20-7"><a id="__codelineno-20-7" name="__codelineno-20-7" href="#__codelineno-20-7"></a>
</span><span id="__span-20-8"><a id="__codelineno-20-8" name="__codelineno-20-8" href="#__codelineno-20-8"></a><span class="kd">interface</span><span class="w"> </span><span class="nx">CreateUserInput</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-20-9"><a id="__codelineno-20-9" name="__codelineno-20-9" href="#__codelineno-20-9"></a><span class="w"> </span><span class="nx">email</span><span class="o">:</span><span class="w"> </span><span class="kt">string</span><span class="p">;</span>
</span><span id="__span-20-10"><a id="__codelineno-20-10" name="__codelineno-20-10" href="#__codelineno-20-10"></a><span class="w"> </span><span class="nx">password</span><span class="o">:</span><span class="w"> </span><span class="kt">string</span><span class="p">;</span>
</span><span id="__span-20-11"><a id="__codelineno-20-11" name="__codelineno-20-11" href="#__codelineno-20-11"></a><span class="p">}</span>
</span></code></pre></div></p>
<p><strong>Enums:</strong> PascalCase, members UPPER_SNAKE_CASE
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-21-1"><a id="__codelineno-21-1" name="__codelineno-21-1" href="#__codelineno-21-1"></a><span class="kd">enum</span><span class="w"> </span><span class="nx">UserRole</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-21-2"><a id="__codelineno-21-2" name="__codelineno-21-2" href="#__codelineno-21-2"></a><span class="w"> </span><span class="nx">USER</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s1">&#39;USER&#39;</span><span class="p">,</span>
</span><span id="__span-21-3"><a id="__codelineno-21-3" name="__codelineno-21-3" href="#__codelineno-21-3"></a><span class="w"> </span><span class="nx">ADMIN</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s1">&#39;ADMIN&#39;</span><span class="p">,</span>
</span><span id="__span-21-4"><a id="__codelineno-21-4" name="__codelineno-21-4" href="#__codelineno-21-4"></a><span class="w"> </span><span class="nx">SUPER_ADMIN</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s1">&#39;SUPER_ADMIN&#39;</span>
</span><span id="__span-21-5"><a id="__codelineno-21-5" name="__codelineno-21-5" href="#__codelineno-21-5"></a><span class="p">}</span>
</span></code></pre></div></p>
<h3 id="react-components">React Components<a class="headerlink" href="#react-components" title="Permanent link">&para;</a></h3>
<p><strong>Components:</strong> PascalCase
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-22-1"><a id="__codelineno-22-1" name="__codelineno-22-1" href="#__codelineno-22-1"></a><span class="k">export</span><span class="w"> </span><span class="kd">function</span><span class="w"> </span><span class="nx">UserCard</span><span class="p">({</span><span class="w"> </span><span class="nx">user</span><span class="w"> </span><span class="p">}</span><span class="o">:</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">user</span><span class="o">:</span><span class="w"> </span><span class="kt">User</span><span class="w"> </span><span class="p">})</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-22-2"><a id="__codelineno-22-2" name="__codelineno-22-2" href="#__codelineno-22-2"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="o">&lt;</span><span class="nx">div</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">user</span><span class="p">.</span><span class="nx">name</span><span class="p">}</span><span class="o">&lt;</span><span class="err">/div&gt;;</span>
</span><span id="__span-22-3"><a id="__codelineno-22-3" name="__codelineno-22-3" href="#__codelineno-22-3"></a><span class="p">}</span>
</span></code></pre></div></p>
<p><strong>Props interfaces:</strong> ComponentNameProps
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-23-1"><a id="__codelineno-23-1" name="__codelineno-23-1" href="#__codelineno-23-1"></a><span class="kd">interface</span><span class="w"> </span><span class="nx">UserCardProps</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-23-2"><a id="__codelineno-23-2" name="__codelineno-23-2" href="#__codelineno-23-2"></a><span class="w"> </span><span class="nx">user</span><span class="o">:</span><span class="w"> </span><span class="kt">User</span><span class="p">;</span>
</span><span id="__span-23-3"><a id="__codelineno-23-3" name="__codelineno-23-3" href="#__codelineno-23-3"></a><span class="w"> </span><span class="nx">onEdit</span><span class="o">?:</span><span class="w"> </span><span class="p">(</span><span class="nx">user</span><span class="o">:</span><span class="w"> </span><span class="kt">User</span><span class="p">)</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="ow">void</span><span class="p">;</span>
</span><span id="__span-23-4"><a id="__codelineno-23-4" name="__codelineno-23-4" href="#__codelineno-23-4"></a><span class="p">}</span>
</span><span id="__span-23-5"><a id="__codelineno-23-5" name="__codelineno-23-5" href="#__codelineno-23-5"></a>
</span><span id="__span-23-6"><a id="__codelineno-23-6" name="__codelineno-23-6" href="#__codelineno-23-6"></a><span class="k">export</span><span class="w"> </span><span class="kd">function</span><span class="w"> </span><span class="nx">UserCard</span><span class="p">({</span><span class="w"> </span><span class="nx">user</span><span class="p">,</span><span class="w"> </span><span class="nx">onEdit</span><span class="w"> </span><span class="p">}</span><span class="o">:</span><span class="w"> </span><span class="nx">UserCardProps</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-23-7"><a id="__codelineno-23-7" name="__codelineno-23-7" href="#__codelineno-23-7"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="o">&lt;</span><span class="nx">div</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">user</span><span class="p">.</span><span class="nx">name</span><span class="p">}</span><span class="o">&lt;</span><span class="err">/div&gt;;</span>
</span><span id="__span-23-8"><a id="__codelineno-23-8" name="__codelineno-23-8" href="#__codelineno-23-8"></a><span class="p">}</span>
</span></code></pre></div></p>
<p><strong>Event handlers:</strong> handle[Event] or on[Event]
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-24-1"><a id="__codelineno-24-1" name="__codelineno-24-1" href="#__codelineno-24-1"></a><span class="kd">function</span><span class="w"> </span><span class="nx">UserForm</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-24-2"><a id="__codelineno-24-2" name="__codelineno-24-2" href="#__codelineno-24-2"></a><span class="w"> </span><span class="kd">const</span><span class="w"> </span><span class="nx">handleSubmit</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">()</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="p">{};</span>
</span><span id="__span-24-3"><a id="__codelineno-24-3" name="__codelineno-24-3" href="#__codelineno-24-3"></a><span class="w"> </span><span class="kd">const</span><span class="w"> </span><span class="nx">onEmailChange</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="nx">email</span><span class="o">:</span><span class="w"> </span><span class="kt">string</span><span class="p">)</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="p">{};</span>
</span><span id="__span-24-4"><a id="__codelineno-24-4" name="__codelineno-24-4" href="#__codelineno-24-4"></a>
</span><span id="__span-24-5"><a id="__codelineno-24-5" name="__codelineno-24-5" href="#__codelineno-24-5"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="o">&lt;</span><span class="nx">form</span><span class="w"> </span><span class="nx">onSubmit</span><span class="o">=</span><span class="p">{</span><span class="nx">handleSubmit</span><span class="p">}</span><span class="o">&gt;</span><span class="p">...</span><span class="o">&lt;</span><span class="err">/form&gt;;</span>
</span><span id="__span-24-6"><a id="__codelineno-24-6" name="__codelineno-24-6" href="#__codelineno-24-6"></a><span class="p">}</span>
</span></code></pre></div></p>
<h3 id="database-models">Database Models<a class="headerlink" href="#database-models" title="Permanent link">&para;</a></h3>
<p><strong>Prisma models:</strong> PascalCase (singular)
<div class="language-text highlight"><pre><span></span><code><span id="__span-25-1"><a id="__codelineno-25-1" name="__codelineno-25-1" href="#__codelineno-25-1"></a>model User {
</span><span id="__span-25-2"><a id="__codelineno-25-2" name="__codelineno-25-2" href="#__codelineno-25-2"></a> id Int @id @default(autoincrement())
</span><span id="__span-25-3"><a id="__codelineno-25-3" name="__codelineno-25-3" href="#__codelineno-25-3"></a> email String @unique
</span><span id="__span-25-4"><a id="__codelineno-25-4" name="__codelineno-25-4" href="#__codelineno-25-4"></a>}
</span><span id="__span-25-5"><a id="__codelineno-25-5" name="__codelineno-25-5" href="#__codelineno-25-5"></a>
</span><span id="__span-25-6"><a id="__codelineno-25-6" name="__codelineno-25-6" href="#__codelineno-25-6"></a>model Campaign {
</span><span id="__span-25-7"><a id="__codelineno-25-7" name="__codelineno-25-7" href="#__codelineno-25-7"></a> id Int @id @default(autoincrement())
</span><span id="__span-25-8"><a id="__codelineno-25-8" name="__codelineno-25-8" href="#__codelineno-25-8"></a> title String
</span><span id="__span-25-9"><a id="__codelineno-25-9" name="__codelineno-25-9" href="#__codelineno-25-9"></a>}
</span></code></pre></div></p>
<p><strong>Table names:</strong> snake_case (plural)
<div class="language-text highlight"><pre><span></span><code><span id="__span-26-1"><a id="__codelineno-26-1" name="__codelineno-26-1" href="#__codelineno-26-1"></a>model User {
</span><span id="__span-26-2"><a id="__codelineno-26-2" name="__codelineno-26-2" href="#__codelineno-26-2"></a> @@map(&quot;users&quot;)
</span><span id="__span-26-3"><a id="__codelineno-26-3" name="__codelineno-26-3" href="#__codelineno-26-3"></a>}
</span><span id="__span-26-4"><a id="__codelineno-26-4" name="__codelineno-26-4" href="#__codelineno-26-4"></a>
</span><span id="__span-26-5"><a id="__codelineno-26-5" name="__codelineno-26-5" href="#__codelineno-26-5"></a>model Campaign {
</span><span id="__span-26-6"><a id="__codelineno-26-6" name="__codelineno-26-6" href="#__codelineno-26-6"></a> @@map(&quot;campaigns&quot;)
</span><span id="__span-26-7"><a id="__codelineno-26-7" name="__codelineno-26-7" href="#__codelineno-26-7"></a>}
</span></code></pre></div></p>
<p><strong>Fields:</strong> camelCase in schema, snake_case in database
<div class="language-text highlight"><pre><span></span><code><span id="__span-27-1"><a id="__codelineno-27-1" name="__codelineno-27-1" href="#__codelineno-27-1"></a>model User {
</span><span id="__span-27-2"><a id="__codelineno-27-2" name="__codelineno-27-2" href="#__codelineno-27-2"></a> createdAt DateTime @default(now()) @map(&quot;created_at&quot;)
</span><span id="__span-27-3"><a id="__codelineno-27-3" name="__codelineno-27-3" href="#__codelineno-27-3"></a> updatedAt DateTime @updatedAt @map(&quot;updated_at&quot;)
</span><span id="__span-27-4"><a id="__codelineno-27-4" name="__codelineno-27-4" href="#__codelineno-27-4"></a>}
</span></code></pre></div></p>
<h2 id="file-organization">File Organization<a class="headerlink" href="#file-organization" title="Permanent link">&para;</a></h2>
<h3 id="module-structure">Module Structure<a class="headerlink" href="#module-structure" title="Permanent link">&para;</a></h3>
<div class="language-text highlight"><pre><span></span><code><span id="__span-28-1"><a id="__codelineno-28-1" name="__codelineno-28-1" href="#__codelineno-28-1"></a>src/modules/auth/
</span><span id="__span-28-2"><a id="__codelineno-28-2" name="__codelineno-28-2" href="#__codelineno-28-2"></a>├── auth.service.ts # Business logic
</span><span id="__span-28-3"><a id="__codelineno-28-3" name="__codelineno-28-3" href="#__codelineno-28-3"></a>├── auth.routes.ts # Express routes
</span><span id="__span-28-4"><a id="__codelineno-28-4" name="__codelineno-28-4" href="#__codelineno-28-4"></a>├── auth.schemas.ts # Zod validation schemas
</span><span id="__span-28-5"><a id="__codelineno-28-5" name="__codelineno-28-5" href="#__codelineno-28-5"></a>└── auth.service.test.ts # Tests
</span></code></pre></div>
<h3 id="import-order">Import Order<a class="headerlink" href="#import-order" title="Permanent link">&para;</a></h3>
<ol>
<li>External libraries</li>
<li>Internal modules (absolute imports)</li>
<li>Relative imports</li>
<li>Types</li>
<li>Styles (frontend)</li>
</ol>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-29-1"><a id="__codelineno-29-1" name="__codelineno-29-1" href="#__codelineno-29-1"></a><span class="c1">// 1. External libraries</span>
</span><span id="__span-29-2"><a id="__codelineno-29-2" name="__codelineno-29-2" href="#__codelineno-29-2"></a><span class="k">import</span><span class="w"> </span><span class="nx">express</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;express&#39;</span><span class="p">;</span>
</span><span id="__span-29-3"><a id="__codelineno-29-3" name="__codelineno-29-3" href="#__codelineno-29-3"></a><span class="k">import</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">z</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;zod&#39;</span><span class="p">;</span>
</span><span id="__span-29-4"><a id="__codelineno-29-4" name="__codelineno-29-4" href="#__codelineno-29-4"></a>
</span><span id="__span-29-5"><a id="__codelineno-29-5" name="__codelineno-29-5" href="#__codelineno-29-5"></a><span class="c1">// 2. Internal modules</span>
</span><span id="__span-29-6"><a id="__codelineno-29-6" name="__codelineno-29-6" href="#__codelineno-29-6"></a><span class="k">import</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">authenticate</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;@/middleware/auth&#39;</span><span class="p">;</span>
</span><span id="__span-29-7"><a id="__codelineno-29-7" name="__codelineno-29-7" href="#__codelineno-29-7"></a><span class="k">import</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">UserService</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;@/modules/users/user.service&#39;</span><span class="p">;</span>
</span><span id="__span-29-8"><a id="__codelineno-29-8" name="__codelineno-29-8" href="#__codelineno-29-8"></a>
</span><span id="__span-29-9"><a id="__codelineno-29-9" name="__codelineno-29-9" href="#__codelineno-29-9"></a><span class="c1">// 3. Relative imports</span>
</span><span id="__span-29-10"><a id="__codelineno-29-10" name="__codelineno-29-10" href="#__codelineno-29-10"></a><span class="k">import</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">AuthService</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;./auth.service&#39;</span><span class="p">;</span>
</span><span id="__span-29-11"><a id="__codelineno-29-11" name="__codelineno-29-11" href="#__codelineno-29-11"></a><span class="k">import</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">loginSchema</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;./auth.schemas&#39;</span><span class="p">;</span>
</span><span id="__span-29-12"><a id="__codelineno-29-12" name="__codelineno-29-12" href="#__codelineno-29-12"></a>
</span><span id="__span-29-13"><a id="__codelineno-29-13" name="__codelineno-29-13" href="#__codelineno-29-13"></a><span class="c1">// 4. Types</span>
</span><span id="__span-29-14"><a id="__codelineno-29-14" name="__codelineno-29-14" href="#__codelineno-29-14"></a><span class="k">import</span><span class="w"> </span><span class="kr">type</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">Request</span><span class="p">,</span><span class="w"> </span><span class="nx">Response</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;express&#39;</span><span class="p">;</span>
</span><span id="__span-29-15"><a id="__codelineno-29-15" name="__codelineno-29-15" href="#__codelineno-29-15"></a><span class="k">import</span><span class="w"> </span><span class="kr">type</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">User</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;@prisma/client&#39;</span><span class="p">;</span>
</span><span id="__span-29-16"><a id="__codelineno-29-16" name="__codelineno-29-16" href="#__codelineno-29-16"></a>
</span><span id="__span-29-17"><a id="__codelineno-29-17" name="__codelineno-29-17" href="#__codelineno-29-17"></a><span class="c1">// 5. Styles (frontend only)</span>
</span><span id="__span-29-18"><a id="__codelineno-29-18" name="__codelineno-29-18" href="#__codelineno-29-18"></a><span class="k">import</span><span class="w"> </span><span class="s1">&#39;./auth.css&#39;</span><span class="p">;</span>
</span></code></pre></div>
<h3 id="export-patterns">Export Patterns<a class="headerlink" href="#export-patterns" title="Permanent link">&para;</a></h3>
<p><strong>Named exports</strong> (preferred)
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-30-1"><a id="__codelineno-30-1" name="__codelineno-30-1" href="#__codelineno-30-1"></a><span class="c1">// auth.service.ts</span>
</span><span id="__span-30-2"><a id="__codelineno-30-2" name="__codelineno-30-2" href="#__codelineno-30-2"></a><span class="k">export</span><span class="w"> </span><span class="kd">class</span><span class="w"> </span><span class="nx">AuthService</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-30-3"><a id="__codelineno-30-3" name="__codelineno-30-3" href="#__codelineno-30-3"></a><span class="w"> </span><span class="k">async</span><span class="w"> </span><span class="nx">login</span><span class="p">()</span><span class="w"> </span><span class="p">{}</span>
</span><span id="__span-30-4"><a id="__codelineno-30-4" name="__codelineno-30-4" href="#__codelineno-30-4"></a><span class="p">}</span>
</span><span id="__span-30-5"><a id="__codelineno-30-5" name="__codelineno-30-5" href="#__codelineno-30-5"></a>
</span><span id="__span-30-6"><a id="__codelineno-30-6" name="__codelineno-30-6" href="#__codelineno-30-6"></a><span class="c1">// usage</span>
</span><span id="__span-30-7"><a id="__codelineno-30-7" name="__codelineno-30-7" href="#__codelineno-30-7"></a><span class="k">import</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">AuthService</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;./auth.service&#39;</span><span class="p">;</span>
</span></code></pre></div></p>
<p><strong>Default exports</strong> (React components)
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-31-1"><a id="__codelineno-31-1" name="__codelineno-31-1" href="#__codelineno-31-1"></a><span class="c1">// UserCard.tsx</span>
</span><span id="__span-31-2"><a id="__codelineno-31-2" name="__codelineno-31-2" href="#__codelineno-31-2"></a><span class="k">export</span><span class="w"> </span><span class="k">default</span><span class="w"> </span><span class="kd">function</span><span class="w"> </span><span class="nx">UserCard</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-31-3"><a id="__codelineno-31-3" name="__codelineno-31-3" href="#__codelineno-31-3"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="o">&lt;</span><span class="nx">div</span><span class="o">&gt;</span><span class="p">...</span><span class="o">&lt;</span><span class="err">/div&gt;;</span>
</span><span id="__span-31-4"><a id="__codelineno-31-4" name="__codelineno-31-4" href="#__codelineno-31-4"></a><span class="p">}</span>
</span><span id="__span-31-5"><a id="__codelineno-31-5" name="__codelineno-31-5" href="#__codelineno-31-5"></a>
</span><span id="__span-31-6"><a id="__codelineno-31-6" name="__codelineno-31-6" href="#__codelineno-31-6"></a><span class="c1">// usage</span>
</span><span id="__span-31-7"><a id="__codelineno-31-7" name="__codelineno-31-7" href="#__codelineno-31-7"></a><span class="k">import</span><span class="w"> </span><span class="nx">UserCard</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;./UserCard&#39;</span><span class="p">;</span>
</span></code></pre></div></p>
<p><strong>Re-exports</strong> (index files)
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-32-1"><a id="__codelineno-32-1" name="__codelineno-32-1" href="#__codelineno-32-1"></a><span class="c1">// modules/auth/index.ts</span>
</span><span id="__span-32-2"><a id="__codelineno-32-2" name="__codelineno-32-2" href="#__codelineno-32-2"></a><span class="k">export</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">AuthService</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;./auth.service&#39;</span><span class="p">;</span>
</span><span id="__span-32-3"><a id="__codelineno-32-3" name="__codelineno-32-3" href="#__codelineno-32-3"></a><span class="k">export</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">authRoutes</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;./auth.routes&#39;</span><span class="p">;</span>
</span><span id="__span-32-4"><a id="__codelineno-32-4" name="__codelineno-32-4" href="#__codelineno-32-4"></a><span class="k">export</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="kr">from</span><span class="w"> </span><span class="s1">&#39;./auth.schemas&#39;</span><span class="p">;</span>
</span></code></pre></div></p>
<h2 id="code-patterns">Code Patterns<a class="headerlink" href="#code-patterns" title="Permanent link">&para;</a></h2>
<h3 id="asyncawait">Async/Await<a class="headerlink" href="#asyncawait" title="Permanent link">&para;</a></h3>
<p>Always use async/await (not callbacks or .then()):</p>
<p><strong>Good:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-33-1"><a id="__codelineno-33-1" name="__codelineno-33-1" href="#__codelineno-33-1"></a><span class="k">async</span><span class="w"> </span><span class="kd">function</span><span class="w"> </span><span class="nx">getUser</span><span class="p">(</span><span class="nx">id</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-33-2"><a id="__codelineno-33-2" name="__codelineno-33-2" href="#__codelineno-33-2"></a><span class="w"> </span><span class="kd">const</span><span class="w"> </span><span class="nx">user</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">await</span><span class="w"> </span><span class="nx">prisma</span><span class="p">.</span><span class="nx">user</span><span class="p">.</span><span class="nx">findUnique</span><span class="p">({</span><span class="w"> </span><span class="nx">where</span><span class="o">:</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">id</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="p">});</span>
</span><span id="__span-33-3"><a id="__codelineno-33-3" name="__codelineno-33-3" href="#__codelineno-33-3"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="nx">user</span><span class="p">;</span>
</span><span id="__span-33-4"><a id="__codelineno-33-4" name="__codelineno-33-4" href="#__codelineno-33-4"></a><span class="p">}</span>
</span></code></pre></div></p>
<p><strong>Bad:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-34-1"><a id="__codelineno-34-1" name="__codelineno-34-1" href="#__codelineno-34-1"></a><span class="kd">function</span><span class="w"> </span><span class="nx">getUser</span><span class="p">(</span><span class="nx">id</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-34-2"><a id="__codelineno-34-2" name="__codelineno-34-2" href="#__codelineno-34-2"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="nx">prisma</span><span class="p">.</span><span class="nx">user</span><span class="p">.</span><span class="nx">findUnique</span><span class="p">({</span><span class="w"> </span><span class="nx">where</span><span class="o">:</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">id</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="p">}).</span><span class="nx">then</span><span class="p">(</span><span class="nx">user</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-34-3"><a id="__codelineno-34-3" name="__codelineno-34-3" href="#__codelineno-34-3"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="nx">user</span><span class="p">;</span>
</span><span id="__span-34-4"><a id="__codelineno-34-4" name="__codelineno-34-4" href="#__codelineno-34-4"></a><span class="w"> </span><span class="p">});</span>
</span><span id="__span-34-5"><a id="__codelineno-34-5" name="__codelineno-34-5" href="#__codelineno-34-5"></a><span class="p">}</span>
</span></code></pre></div></p>
<h3 id="error-handling">Error Handling<a class="headerlink" href="#error-handling" title="Permanent link">&para;</a></h3>
<p>Use try/catch for error handling:</p>
<p><strong>Good:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-35-1"><a id="__codelineno-35-1" name="__codelineno-35-1" href="#__codelineno-35-1"></a><span class="k">async</span><span class="w"> </span><span class="kd">function</span><span class="w"> </span><span class="nx">createUser</span><span class="p">(</span><span class="nx">data</span><span class="o">:</span><span class="w"> </span><span class="kt">CreateUserInput</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-35-2"><a id="__codelineno-35-2" name="__codelineno-35-2" href="#__codelineno-35-2"></a><span class="w"> </span><span class="k">try</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-35-3"><a id="__codelineno-35-3" name="__codelineno-35-3" href="#__codelineno-35-3"></a><span class="w"> </span><span class="kd">const</span><span class="w"> </span><span class="nx">user</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">await</span><span class="w"> </span><span class="nx">prisma</span><span class="p">.</span><span class="nx">user</span><span class="p">.</span><span class="nx">create</span><span class="p">({</span><span class="w"> </span><span class="nx">data</span><span class="w"> </span><span class="p">});</span>
</span><span id="__span-35-4"><a id="__codelineno-35-4" name="__codelineno-35-4" href="#__codelineno-35-4"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="nx">user</span><span class="p">;</span>
</span><span id="__span-35-5"><a id="__codelineno-35-5" name="__codelineno-35-5" href="#__codelineno-35-5"></a><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="k">catch</span><span class="w"> </span><span class="p">(</span><span class="nx">error</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-35-6"><a id="__codelineno-35-6" name="__codelineno-35-6" href="#__codelineno-35-6"></a><span class="w"> </span><span class="nx">logger</span><span class="p">.</span><span class="nx">error</span><span class="p">(</span><span class="s1">&#39;Failed to create user&#39;</span><span class="p">,</span><span class="w"> </span><span class="nx">error</span><span class="p">);</span>
</span><span id="__span-35-7"><a id="__codelineno-35-7" name="__codelineno-35-7" href="#__codelineno-35-7"></a><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="ne">Error</span><span class="p">(</span><span class="s1">&#39;User creation failed&#39;</span><span class="p">);</span>
</span><span id="__span-35-8"><a id="__codelineno-35-8" name="__codelineno-35-8" href="#__codelineno-35-8"></a><span class="w"> </span><span class="p">}</span>
</span><span id="__span-35-9"><a id="__codelineno-35-9" name="__codelineno-35-9" href="#__codelineno-35-9"></a><span class="p">}</span>
</span></code></pre></div></p>
<p><strong>Bad:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-36-1"><a id="__codelineno-36-1" name="__codelineno-36-1" href="#__codelineno-36-1"></a><span class="k">async</span><span class="w"> </span><span class="kd">function</span><span class="w"> </span><span class="nx">createUser</span><span class="p">(</span><span class="nx">data</span><span class="o">:</span><span class="w"> </span><span class="kt">CreateUserInput</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-36-2"><a id="__codelineno-36-2" name="__codelineno-36-2" href="#__codelineno-36-2"></a><span class="w"> </span><span class="kd">const</span><span class="w"> </span><span class="nx">user</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">await</span><span class="w"> </span><span class="nx">prisma</span><span class="p">.</span><span class="nx">user</span><span class="p">.</span><span class="nx">create</span><span class="p">({</span><span class="w"> </span><span class="nx">data</span><span class="w"> </span><span class="p">});</span><span class="w"> </span><span class="c1">// Unhandled error</span>
</span><span id="__span-36-3"><a id="__codelineno-36-3" name="__codelineno-36-3" href="#__codelineno-36-3"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="nx">user</span><span class="p">;</span>
</span><span id="__span-36-4"><a id="__codelineno-36-4" name="__codelineno-36-4" href="#__codelineno-36-4"></a><span class="p">}</span>
</span></code></pre></div></p>
<h3 id="optional-chaining">Optional Chaining<a class="headerlink" href="#optional-chaining" title="Permanent link">&para;</a></h3>
<p>Use optional chaining for nullable values:</p>
<p><strong>Good:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-37-1"><a id="__codelineno-37-1" name="__codelineno-37-1" href="#__codelineno-37-1"></a><span class="kd">const</span><span class="w"> </span><span class="nx">email</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">user</span><span class="o">?</span><span class="p">.</span><span class="nx">email</span><span class="p">;</span>
</span><span id="__span-37-2"><a id="__codelineno-37-2" name="__codelineno-37-2" href="#__codelineno-37-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">city</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">user</span><span class="o">?</span><span class="p">.</span><span class="nx">address</span><span class="o">?</span><span class="p">.</span><span class="nx">city</span><span class="p">;</span>
</span></code></pre></div></p>
<p><strong>Bad:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-38-1"><a id="__codelineno-38-1" name="__codelineno-38-1" href="#__codelineno-38-1"></a><span class="kd">const</span><span class="w"> </span><span class="nx">email</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">user</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="nx">user</span><span class="p">.</span><span class="nx">email</span><span class="p">;</span>
</span><span id="__span-38-2"><a id="__codelineno-38-2" name="__codelineno-38-2" href="#__codelineno-38-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">city</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">user</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="nx">user</span><span class="p">.</span><span class="nx">address</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="nx">user</span><span class="p">.</span><span class="nx">address</span><span class="p">.</span><span class="nx">city</span><span class="p">;</span>
</span></code></pre></div></p>
<h3 id="nullish-coalescing">Nullish Coalescing<a class="headerlink" href="#nullish-coalescing" title="Permanent link">&para;</a></h3>
<p>Use ?? for default values (not ||):</p>
<p><strong>Good:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-39-1"><a id="__codelineno-39-1" name="__codelineno-39-1" href="#__codelineno-39-1"></a><span class="kd">const</span><span class="w"> </span><span class="nx">limit</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">query</span><span class="p">.</span><span class="nx">limit</span><span class="w"> </span><span class="o">??</span><span class="w"> </span><span class="mf">50</span><span class="p">;</span>
</span><span id="__span-39-2"><a id="__codelineno-39-2" name="__codelineno-39-2" href="#__codelineno-39-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">name</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">user</span><span class="p">.</span><span class="nx">name</span><span class="w"> </span><span class="o">??</span><span class="w"> </span><span class="s1">&#39;Unknown&#39;</span><span class="p">;</span>
</span></code></pre></div></p>
<p><strong>Bad:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-40-1"><a id="__codelineno-40-1" name="__codelineno-40-1" href="#__codelineno-40-1"></a><span class="kd">const</span><span class="w"> </span><span class="nx">limit</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">query</span><span class="p">.</span><span class="nx">limit</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="mf">50</span><span class="p">;</span><span class="w"> </span><span class="c1">// Fails for 0</span>
</span><span id="__span-40-2"><a id="__codelineno-40-2" name="__codelineno-40-2" href="#__codelineno-40-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">name</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">user</span><span class="p">.</span><span class="nx">name</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="s1">&#39;Unknown&#39;</span><span class="p">;</span><span class="w"> </span><span class="c1">// Fails for &#39;&#39;</span>
</span></code></pre></div></p>
<h3 id="array-methods">Array Methods<a class="headerlink" href="#array-methods" title="Permanent link">&para;</a></h3>
<p>Prefer functional array methods:</p>
<p><strong>Good:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-41-1"><a id="__codelineno-41-1" name="__codelineno-41-1" href="#__codelineno-41-1"></a><span class="kd">const</span><span class="w"> </span><span class="nx">activeUsers</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">users</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">u</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="nx">u</span><span class="p">.</span><span class="nx">isActive</span><span class="p">);</span>
</span><span id="__span-41-2"><a id="__codelineno-41-2" name="__codelineno-41-2" href="#__codelineno-41-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">emails</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">users</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">u</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="nx">u</span><span class="p">.</span><span class="nx">email</span><span class="p">);</span>
</span><span id="__span-41-3"><a id="__codelineno-41-3" name="__codelineno-41-3" href="#__codelineno-41-3"></a><span class="kd">const</span><span class="w"> </span><span class="nx">total</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">amounts</span><span class="p">.</span><span class="nx">reduce</span><span class="p">((</span><span class="nx">sum</span><span class="p">,</span><span class="w"> </span><span class="nx">amt</span><span class="p">)</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="nx">sum</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="nx">amt</span><span class="p">,</span><span class="w"> </span><span class="mf">0</span><span class="p">);</span>
</span></code></pre></div></p>
<p><strong>Bad:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-42-1"><a id="__codelineno-42-1" name="__codelineno-42-1" href="#__codelineno-42-1"></a><span class="kd">const</span><span class="w"> </span><span class="nx">activeUsers</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">[];</span>
</span><span id="__span-42-2"><a id="__codelineno-42-2" name="__codelineno-42-2" href="#__codelineno-42-2"></a><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kd">let</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o">&lt;</span><span class="w"> </span><span class="nx">users</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span><span class="w"> </span><span class="nx">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-42-3"><a id="__codelineno-42-3" name="__codelineno-42-3" href="#__codelineno-42-3"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">users</span><span class="p">[</span><span class="nx">i</span><span class="p">].</span><span class="nx">isActive</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-42-4"><a id="__codelineno-42-4" name="__codelineno-42-4" href="#__codelineno-42-4"></a><span class="w"> </span><span class="nx">activeUsers</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">users</span><span class="p">[</span><span class="nx">i</span><span class="p">]);</span>
</span><span id="__span-42-5"><a id="__codelineno-42-5" name="__codelineno-42-5" href="#__codelineno-42-5"></a><span class="w"> </span><span class="p">}</span>
</span><span id="__span-42-6"><a id="__codelineno-42-6" name="__codelineno-42-6" href="#__codelineno-42-6"></a><span class="p">}</span>
</span></code></pre></div></p>
<h3 id="object-destructuring">Object Destructuring<a class="headerlink" href="#object-destructuring" title="Permanent link">&para;</a></h3>
<p>Use destructuring for object properties:</p>
<p><strong>Good:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-43-1"><a id="__codelineno-43-1" name="__codelineno-43-1" href="#__codelineno-43-1"></a><span class="kd">const</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">email</span><span class="p">,</span><span class="w"> </span><span class="nx">name</span><span class="p">,</span><span class="w"> </span><span class="nx">role</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">user</span><span class="p">;</span>
</span><span id="__span-43-2"><a id="__codelineno-43-2" name="__codelineno-43-2" href="#__codelineno-43-2"></a><span class="kd">const</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="nx">limit</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">50</span><span class="p">,</span><span class="w"> </span><span class="nx">page</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">1</span><span class="w"> </span><span class="p">}</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">query</span><span class="p">;</span>
</span></code></pre></div></p>
<p><strong>Bad:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-44-1"><a id="__codelineno-44-1" name="__codelineno-44-1" href="#__codelineno-44-1"></a><span class="kd">const</span><span class="w"> </span><span class="nx">email</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">user</span><span class="p">.</span><span class="nx">email</span><span class="p">;</span>
</span><span id="__span-44-2"><a id="__codelineno-44-2" name="__codelineno-44-2" href="#__codelineno-44-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">name</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">user</span><span class="p">.</span><span class="nx">name</span><span class="p">;</span>
</span><span id="__span-44-3"><a id="__codelineno-44-3" name="__codelineno-44-3" href="#__codelineno-44-3"></a><span class="kd">const</span><span class="w"> </span><span class="nx">role</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">user</span><span class="p">.</span><span class="nx">role</span><span class="p">;</span>
</span></code></pre></div></p>
<h3 id="template-literals">Template Literals<a class="headerlink" href="#template-literals" title="Permanent link">&para;</a></h3>
<p>Use template literals for string interpolation:</p>
<p><strong>Good:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-45-1"><a id="__codelineno-45-1" name="__codelineno-45-1" href="#__codelineno-45-1"></a><span class="kd">const</span><span class="w"> </span><span class="nx">message</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="sb">`Hello, </span><span class="si">${</span><span class="nx">user</span><span class="p">.</span><span class="nx">name</span><span class="si">}</span><span class="sb">!`</span><span class="p">;</span>
</span><span id="__span-45-2"><a id="__codelineno-45-2" name="__codelineno-45-2" href="#__codelineno-45-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">url</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="sb">`/api/users/</span><span class="si">${</span><span class="nx">userId</span><span class="si">}</span><span class="sb">`</span><span class="p">;</span>
</span></code></pre></div></p>
<p><strong>Bad:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-46-1"><a id="__codelineno-46-1" name="__codelineno-46-1" href="#__codelineno-46-1"></a><span class="kd">const</span><span class="w"> </span><span class="nx">message</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s1">&#39;Hello, &#39;</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="nx">user</span><span class="p">.</span><span class="nx">name</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="s1">&#39;!&#39;</span><span class="p">;</span>
</span><span id="__span-46-2"><a id="__codelineno-46-2" name="__codelineno-46-2" href="#__codelineno-46-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">url</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s1">&#39;/api/users/&#39;</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="nx">userId</span><span class="p">;</span>
</span></code></pre></div></p>
<h2 id="comments-and-documentation">Comments and Documentation<a class="headerlink" href="#comments-and-documentation" title="Permanent link">&para;</a></h2>
<h3 id="jsdoc-for-functions">JSDoc for Functions<a class="headerlink" href="#jsdoc-for-functions" title="Permanent link">&para;</a></h3>
<p>Document public functions with JSDoc:</p>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-47-1"><a id="__codelineno-47-1" name="__codelineno-47-1" href="#__codelineno-47-1"></a><span class="cm">/**</span>
</span><span id="__span-47-2"><a id="__codelineno-47-2" name="__codelineno-47-2" href="#__codelineno-47-2"></a><span class="cm"> * Creates a new user with the given email and password.</span>
</span><span id="__span-47-3"><a id="__codelineno-47-3" name="__codelineno-47-3" href="#__codelineno-47-3"></a><span class="cm"> *</span>
</span><span id="__span-47-4"><a id="__codelineno-47-4" name="__codelineno-47-4" href="#__codelineno-47-4"></a><span class="cm"> * @param email - User&#39;s email address</span>
</span><span id="__span-47-5"><a id="__codelineno-47-5" name="__codelineno-47-5" href="#__codelineno-47-5"></a><span class="cm"> * @param password - User&#39;s password (will be hashed)</span>
</span><span id="__span-47-6"><a id="__codelineno-47-6" name="__codelineno-47-6" href="#__codelineno-47-6"></a><span class="cm"> * @returns Created user object</span>
</span><span id="__span-47-7"><a id="__codelineno-47-7" name="__codelineno-47-7" href="#__codelineno-47-7"></a><span class="cm"> * @throws {Error} If user already exists</span>
</span><span id="__span-47-8"><a id="__codelineno-47-8" name="__codelineno-47-8" href="#__codelineno-47-8"></a><span class="cm"> */</span>
</span><span id="__span-47-9"><a id="__codelineno-47-9" name="__codelineno-47-9" href="#__codelineno-47-9"></a><span class="k">async</span><span class="w"> </span><span class="kd">function</span><span class="w"> </span><span class="nx">createUser</span><span class="p">(</span><span class="nx">email</span><span class="o">:</span><span class="w"> </span><span class="kt">string</span><span class="p">,</span><span class="w"> </span><span class="nx">password</span><span class="o">:</span><span class="w"> </span><span class="kt">string</span><span class="p">)</span><span class="o">:</span><span class="w"> </span><span class="nb">Promise</span><span class="o">&lt;</span><span class="nx">User</span><span class="o">&gt;</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-47-10"><a id="__codelineno-47-10" name="__codelineno-47-10" href="#__codelineno-47-10"></a><span class="w"> </span><span class="c1">// ...</span>
</span><span id="__span-47-11"><a id="__codelineno-47-11" name="__codelineno-47-11" href="#__codelineno-47-11"></a><span class="p">}</span>
</span></code></pre></div>
<h3 id="inline-comments">Inline Comments<a class="headerlink" href="#inline-comments" title="Permanent link">&para;</a></h3>
<p>Use inline comments for complex logic:</p>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-48-1"><a id="__codelineno-48-1" name="__codelineno-48-1" href="#__codelineno-48-1"></a><span class="c1">// Calculate pagination offset</span>
</span><span id="__span-48-2"><a id="__codelineno-48-2" name="__codelineno-48-2" href="#__codelineno-48-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">offset</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="nx">page</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mf">1</span><span class="p">)</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="nx">limit</span><span class="p">;</span>
</span><span id="__span-48-3"><a id="__codelineno-48-3" name="__codelineno-48-3" href="#__codelineno-48-3"></a>
</span><span id="__span-48-4"><a id="__codelineno-48-4" name="__codelineno-48-4" href="#__codelineno-48-4"></a><span class="c1">// Hash password with 10 salt rounds</span>
</span><span id="__span-48-5"><a id="__codelineno-48-5" name="__codelineno-48-5" href="#__codelineno-48-5"></a><span class="kd">const</span><span class="w"> </span><span class="nx">hashedPassword</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">await</span><span class="w"> </span><span class="nx">bcrypt</span><span class="p">.</span><span class="nx">hash</span><span class="p">(</span><span class="nx">password</span><span class="p">,</span><span class="w"> </span><span class="mf">10</span><span class="p">);</span>
</span><span id="__span-48-6"><a id="__codelineno-48-6" name="__codelineno-48-6" href="#__codelineno-48-6"></a>
</span><span id="__span-48-7"><a id="__codelineno-48-7" name="__codelineno-48-7" href="#__codelineno-48-7"></a><span class="c1">// Point-in-polygon ray-casting algorithm</span>
</span><span id="__span-48-8"><a id="__codelineno-48-8" name="__codelineno-48-8" href="#__codelineno-48-8"></a><span class="kd">let</span><span class="w"> </span><span class="nx">inside</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="kc">false</span><span class="p">;</span>
</span><span id="__span-48-9"><a id="__codelineno-48-9" name="__codelineno-48-9" href="#__codelineno-48-9"></a><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kd">let</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">,</span><span class="w"> </span><span class="nx">j</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">polygon</span><span class="p">.</span><span class="nx">length</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="mf">1</span><span class="p">;</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o">&lt;</span><span class="w"> </span><span class="nx">polygon</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span><span class="w"> </span><span class="nx">j</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-48-10"><a id="__codelineno-48-10" name="__codelineno-48-10" href="#__codelineno-48-10"></a><span class="w"> </span><span class="c1">// ... complex logic</span>
</span><span id="__span-48-11"><a id="__codelineno-48-11" name="__codelineno-48-11" href="#__codelineno-48-11"></a><span class="p">}</span>
</span></code></pre></div>
<h3 id="avoid-obvious-comments">Avoid Obvious Comments<a class="headerlink" href="#avoid-obvious-comments" title="Permanent link">&para;</a></h3>
<p>Don't comment obvious code:</p>
<p><strong>Good:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-49-1"><a id="__codelineno-49-1" name="__codelineno-49-1" href="#__codelineno-49-1"></a><span class="kd">const</span><span class="w"> </span><span class="nx">isValid</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">email</span><span class="p">.</span><span class="nx">includes</span><span class="p">(</span><span class="s1">&#39;@&#39;</span><span class="p">);</span>
</span></code></pre></div></p>
<p><strong>Bad:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-50-1"><a id="__codelineno-50-1" name="__codelineno-50-1" href="#__codelineno-50-1"></a><span class="c1">// Check if email is valid</span>
</span><span id="__span-50-2"><a id="__codelineno-50-2" name="__codelineno-50-2" href="#__codelineno-50-2"></a><span class="kd">const</span><span class="w"> </span><span class="nx">isValid</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">email</span><span class="p">.</span><span class="nx">includes</span><span class="p">(</span><span class="s1">&#39;@&#39;</span><span class="p">);</span>
</span></code></pre></div></p>
<h3 id="todo-comments">TODO Comments<a class="headerlink" href="#todo-comments" title="Permanent link">&para;</a></h3>
<p>Use TODO for future work:</p>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-51-1"><a id="__codelineno-51-1" name="__codelineno-51-1" href="#__codelineno-51-1"></a><span class="c1">// TODO: Add pagination support</span>
</span><span id="__span-51-2"><a id="__codelineno-51-2" name="__codelineno-51-2" href="#__codelineno-51-2"></a><span class="k">async</span><span class="w"> </span><span class="kd">function</span><span class="w"> </span><span class="nx">getUsers</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-51-3"><a id="__codelineno-51-3" name="__codelineno-51-3" href="#__codelineno-51-3"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="nx">prisma</span><span class="p">.</span><span class="nx">user</span><span class="p">.</span><span class="nx">findMany</span><span class="p">();</span>
</span><span id="__span-51-4"><a id="__codelineno-51-4" name="__codelineno-51-4" href="#__codelineno-51-4"></a><span class="p">}</span>
</span><span id="__span-51-5"><a id="__codelineno-51-5" name="__codelineno-51-5" href="#__codelineno-51-5"></a>
</span><span id="__span-51-6"><a id="__codelineno-51-6" name="__codelineno-51-6" href="#__codelineno-51-6"></a><span class="c1">// FIXME: This doesn&#39;t handle edge case when user is null</span>
</span><span id="__span-51-7"><a id="__codelineno-51-7" name="__codelineno-51-7" href="#__codelineno-51-7"></a><span class="kd">const</span><span class="w"> </span><span class="nx">userName</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">user</span><span class="p">.</span><span class="nx">name</span><span class="p">;</span>
</span></code></pre></div>
<h2 id="git-commit-messages">Git Commit Messages<a class="headerlink" href="#git-commit-messages" title="Permanent link">&para;</a></h2>
<h3 id="conventional-commits">Conventional Commits<a class="headerlink" href="#conventional-commits" title="Permanent link">&para;</a></h3>
<p>Use conventional commit format:</p>
<div class="language-text highlight"><pre><span></span><code><span id="__span-52-1"><a id="__codelineno-52-1" name="__codelineno-52-1" href="#__codelineno-52-1"></a>&lt;type&gt;(&lt;scope&gt;): &lt;subject&gt;
</span><span id="__span-52-2"><a id="__codelineno-52-2" name="__codelineno-52-2" href="#__codelineno-52-2"></a>
</span><span id="__span-52-3"><a id="__codelineno-52-3" name="__codelineno-52-3" href="#__codelineno-52-3"></a>&lt;body&gt;
</span><span id="__span-52-4"><a id="__codelineno-52-4" name="__codelineno-52-4" href="#__codelineno-52-4"></a>
</span><span id="__span-52-5"><a id="__codelineno-52-5" name="__codelineno-52-5" href="#__codelineno-52-5"></a>&lt;footer&gt;
</span></code></pre></div>
<p><strong>Types:</strong>
- <code>feat:</code> New feature
- <code>fix:</code> Bug fix
- <code>docs:</code> Documentation
- <code>style:</code> Formatting
- <code>refactor:</code> Code restructuring
- <code>test:</code> Adding tests
- <code>chore:</code> Maintenance</p>
<p><strong>Examples:</strong>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-53-1"><a id="__codelineno-53-1" name="__codelineno-53-1" href="#__codelineno-53-1"></a>feat<span class="o">(</span>auth<span class="o">)</span>:<span class="w"> </span>add<span class="w"> </span>JWT<span class="w"> </span>refresh<span class="w"> </span>token<span class="w"> </span>rotation
</span><span id="__span-53-2"><a id="__codelineno-53-2" name="__codelineno-53-2" href="#__codelineno-53-2"></a>fix<span class="o">(</span>map<span class="o">)</span>:<span class="w"> </span>correct<span class="w"> </span>point-in-polygon<span class="w"> </span>calculation
</span><span id="__span-53-3"><a id="__codelineno-53-3" name="__codelineno-53-3" href="#__codelineno-53-3"></a>docs<span class="o">(</span>api<span class="o">)</span>:<span class="w"> </span>update<span class="w"> </span>authentication<span class="w"> </span>guide
</span><span id="__span-53-4"><a id="__codelineno-53-4" name="__codelineno-53-4" href="#__codelineno-53-4"></a>refactor<span class="o">(</span>users<span class="o">)</span>:<span class="w"> </span>extract<span class="w"> </span>service<span class="w"> </span>layer
</span><span id="__span-53-5"><a id="__codelineno-53-5" name="__codelineno-53-5" href="#__codelineno-53-5"></a>test<span class="o">(</span>campaigns<span class="o">)</span>:<span class="w"> </span>add<span class="w"> </span>unit<span class="w"> </span>tests<span class="w"> </span><span class="k">for</span><span class="w"> </span>CRUD<span class="w"> </span>operations
</span></code></pre></div></p>
<p><strong>With scope and body:</strong>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-54-1"><a id="__codelineno-54-1" name="__codelineno-54-1" href="#__codelineno-54-1"></a>git<span class="w"> </span>commit<span class="w"> </span>-m<span class="w"> </span><span class="s2">&quot;feat(campaigns): add email sending</span>
</span><span id="__span-54-2"><a id="__codelineno-54-2" name="__codelineno-54-2" href="#__codelineno-54-2"></a>
</span><span id="__span-54-3"><a id="__codelineno-54-3" name="__codelineno-54-3" href="#__codelineno-54-3"></a><span class="s2">Implements BullMQ queue for async email delivery.</span>
</span><span id="__span-54-4"><a id="__codelineno-54-4" name="__codelineno-54-4" href="#__codelineno-54-4"></a><span class="s2">Adds retry logic and error handling.</span>
</span><span id="__span-54-5"><a id="__codelineno-54-5" name="__codelineno-54-5" href="#__codelineno-54-5"></a>
</span><span id="__span-54-6"><a id="__codelineno-54-6" name="__codelineno-54-6" href="#__codelineno-54-6"></a><span class="s2">Closes #123&quot;</span>
</span></code></pre></div></p>
<h3 id="co-authoring-with-claude">Co-Authoring with Claude<a class="headerlink" href="#co-authoring-with-claude" title="Permanent link">&para;</a></h3>
<p>When Claude assists with code:</p>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-55-1"><a id="__codelineno-55-1" name="__codelineno-55-1" href="#__codelineno-55-1"></a>git<span class="w"> </span>commit<span class="w"> </span>-m<span class="w"> </span><span class="s2">&quot;</span><span class="k">$(</span>cat<span class="w"> </span><span class="s">&lt;&lt;&#39;EOF&#39;</span>
</span><span id="__span-55-2"><a id="__codelineno-55-2" name="__codelineno-55-2" href="#__codelineno-55-2"></a><span class="s">feat(auth): add JWT refresh token rotation</span>
</span><span id="__span-55-3"><a id="__codelineno-55-3" name="__codelineno-55-3" href="#__codelineno-55-3"></a>
</span><span id="__span-55-4"><a id="__codelineno-55-4" name="__codelineno-55-4" href="#__codelineno-55-4"></a><span class="s">Implemented atomic refresh token rotation to prevent</span>
</span><span id="__span-55-5"><a id="__codelineno-55-5" name="__codelineno-55-5" href="#__codelineno-55-5"></a><span class="s">race conditions during concurrent refresh requests.</span>
</span><span id="__span-55-6"><a id="__codelineno-55-6" name="__codelineno-55-6" href="#__codelineno-55-6"></a>
</span><span id="__span-55-7"><a id="__codelineno-55-7" name="__codelineno-55-7" href="#__codelineno-55-7"></a><span class="s">Co-Authored-By: Claude Opus 4.6 &lt;noreply@anthropic.com&gt;</span>
</span><span id="__span-55-8"><a id="__codelineno-55-8" name="__codelineno-55-8" href="#__codelineno-55-8"></a><span class="s">EOF</span>
</span><span id="__span-55-9"><a id="__codelineno-55-9" name="__codelineno-55-9" href="#__codelineno-55-9"></a><span class="k">)</span><span class="s2">&quot;</span>
</span></code></pre></div>
<h2 id="react-patterns">React Patterns<a class="headerlink" href="#react-patterns" title="Permanent link">&para;</a></h2>
<h3 id="functional-components">Functional Components<a class="headerlink" href="#functional-components" title="Permanent link">&para;</a></h3>
<p>Always use functional components (not class components):</p>
<p><strong>Good:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-56-1"><a id="__codelineno-56-1" name="__codelineno-56-1" href="#__codelineno-56-1"></a><span class="k">export</span><span class="w"> </span><span class="kd">function</span><span class="w"> </span><span class="nx">UserCard</span><span class="p">({</span><span class="w"> </span><span class="nx">user</span><span class="w"> </span><span class="p">}</span><span class="o">:</span><span class="w"> </span><span class="nx">UserCardProps</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-56-2"><a id="__codelineno-56-2" name="__codelineno-56-2" href="#__codelineno-56-2"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="o">&lt;</span><span class="nx">div</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">user</span><span class="p">.</span><span class="nx">name</span><span class="p">}</span><span class="o">&lt;</span><span class="err">/div&gt;;</span>
</span><span id="__span-56-3"><a id="__codelineno-56-3" name="__codelineno-56-3" href="#__codelineno-56-3"></a><span class="p">}</span>
</span></code></pre></div></p>
<p><strong>Bad:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-57-1"><a id="__codelineno-57-1" name="__codelineno-57-1" href="#__codelineno-57-1"></a><span class="k">export</span><span class="w"> </span><span class="kd">class</span><span class="w"> </span><span class="nx">UserCard</span><span class="w"> </span><span class="k">extends</span><span class="w"> </span><span class="nx">React</span><span class="p">.</span><span class="nx">Component</span><span class="o">&lt;</span><span class="nx">UserCardProps</span><span class="o">&gt;</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-57-2"><a id="__codelineno-57-2" name="__codelineno-57-2" href="#__codelineno-57-2"></a><span class="w"> </span><span class="nx">render</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-57-3"><a id="__codelineno-57-3" name="__codelineno-57-3" href="#__codelineno-57-3"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="o">&lt;</span><span class="nx">div</span><span class="o">&gt;</span><span class="p">{</span><span class="k">this</span><span class="p">.</span><span class="nx">props</span><span class="p">.</span><span class="nx">user</span><span class="p">.</span><span class="nx">name</span><span class="p">}</span><span class="o">&lt;</span><span class="err">/div&gt;;</span>
</span><span id="__span-57-4"><a id="__codelineno-57-4" name="__codelineno-57-4" href="#__codelineno-57-4"></a><span class="w"> </span><span class="p">}</span>
</span><span id="__span-57-5"><a id="__codelineno-57-5" name="__codelineno-57-5" href="#__codelineno-57-5"></a><span class="p">}</span>
</span></code></pre></div></p>
<h3 id="hooks">Hooks<a class="headerlink" href="#hooks" title="Permanent link">&para;</a></h3>
<p>Use hooks for state and side effects:</p>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-58-1"><a id="__codelineno-58-1" name="__codelineno-58-1" href="#__codelineno-58-1"></a><span class="kd">function</span><span class="w"> </span><span class="nx">UserList</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-58-2"><a id="__codelineno-58-2" name="__codelineno-58-2" href="#__codelineno-58-2"></a><span class="w"> </span><span class="kd">const</span><span class="w"> </span><span class="p">[</span><span class="nx">users</span><span class="p">,</span><span class="w"> </span><span class="nx">setUsers</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">useState</span><span class="o">&lt;</span><span class="nx">User</span><span class="p">[]</span><span class="o">&gt;</span><span class="p">([]);</span>
</span><span id="__span-58-3"><a id="__codelineno-58-3" name="__codelineno-58-3" href="#__codelineno-58-3"></a><span class="w"> </span><span class="kd">const</span><span class="w"> </span><span class="p">[</span><span class="nx">loading</span><span class="p">,</span><span class="w"> </span><span class="nx">setLoading</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">useState</span><span class="p">(</span><span class="kc">false</span><span class="p">);</span>
</span><span id="__span-58-4"><a id="__codelineno-58-4" name="__codelineno-58-4" href="#__codelineno-58-4"></a>
</span><span id="__span-58-5"><a id="__codelineno-58-5" name="__codelineno-58-5" href="#__codelineno-58-5"></a><span class="w"> </span><span class="nx">useEffect</span><span class="p">(()</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-58-6"><a id="__codelineno-58-6" name="__codelineno-58-6" href="#__codelineno-58-6"></a><span class="w"> </span><span class="k">async</span><span class="w"> </span><span class="kd">function</span><span class="w"> </span><span class="nx">fetchUsers</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-58-7"><a id="__codelineno-58-7" name="__codelineno-58-7" href="#__codelineno-58-7"></a><span class="w"> </span><span class="nx">setLoading</span><span class="p">(</span><span class="kc">true</span><span class="p">);</span>
</span><span id="__span-58-8"><a id="__codelineno-58-8" name="__codelineno-58-8" href="#__codelineno-58-8"></a><span class="w"> </span><span class="kd">const</span><span class="w"> </span><span class="nx">data</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">await</span><span class="w"> </span><span class="nx">api</span><span class="p">.</span><span class="nx">get</span><span class="p">(</span><span class="s1">&#39;/users&#39;</span><span class="p">);</span>
</span><span id="__span-58-9"><a id="__codelineno-58-9" name="__codelineno-58-9" href="#__codelineno-58-9"></a><span class="w"> </span><span class="nx">setUsers</span><span class="p">(</span><span class="nx">data</span><span class="p">);</span>
</span><span id="__span-58-10"><a id="__codelineno-58-10" name="__codelineno-58-10" href="#__codelineno-58-10"></a><span class="w"> </span><span class="nx">setLoading</span><span class="p">(</span><span class="kc">false</span><span class="p">);</span>
</span><span id="__span-58-11"><a id="__codelineno-58-11" name="__codelineno-58-11" href="#__codelineno-58-11"></a><span class="w"> </span><span class="p">}</span>
</span><span id="__span-58-12"><a id="__codelineno-58-12" name="__codelineno-58-12" href="#__codelineno-58-12"></a><span class="w"> </span><span class="nx">fetchUsers</span><span class="p">();</span>
</span><span id="__span-58-13"><a id="__codelineno-58-13" name="__codelineno-58-13" href="#__codelineno-58-13"></a><span class="w"> </span><span class="p">},</span><span class="w"> </span><span class="p">[]);</span>
</span><span id="__span-58-14"><a id="__codelineno-58-14" name="__codelineno-58-14" href="#__codelineno-58-14"></a>
</span><span id="__span-58-15"><a id="__codelineno-58-15" name="__codelineno-58-15" href="#__codelineno-58-15"></a><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="nx">loading</span><span class="p">)</span><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="o">&lt;</span><span class="nx">div</span><span class="o">&gt;</span><span class="nx">Loading</span><span class="p">...</span><span class="o">&lt;</span><span class="err">/div&gt;;</span>
</span><span id="__span-58-16"><a id="__codelineno-58-16" name="__codelineno-58-16" href="#__codelineno-58-16"></a>
</span><span id="__span-58-17"><a id="__codelineno-58-17" name="__codelineno-58-17" href="#__codelineno-58-17"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="o">&lt;</span><span class="nx">div</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">users</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">u</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="o">&lt;</span><span class="nx">UserCard</span><span class="w"> </span><span class="nx">key</span><span class="o">=</span><span class="p">{</span><span class="nx">u</span><span class="p">.</span><span class="nx">id</span><span class="p">}</span><span class="w"> </span><span class="nx">user</span><span class="o">=</span><span class="p">{</span><span class="nx">u</span><span class="p">}</span><span class="w"> </span><span class="o">/&gt;</span><span class="p">)}</span><span class="o">&lt;</span><span class="err">/div&gt;;</span>
</span><span id="__span-58-18"><a id="__codelineno-58-18" name="__codelineno-58-18" href="#__codelineno-58-18"></a><span class="p">}</span>
</span></code></pre></div>
<h3 id="props-destructuring">Props Destructuring<a class="headerlink" href="#props-destructuring" title="Permanent link">&para;</a></h3>
<p>Destructure props in function signature:</p>
<p><strong>Good:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-59-1"><a id="__codelineno-59-1" name="__codelineno-59-1" href="#__codelineno-59-1"></a><span class="kd">function</span><span class="w"> </span><span class="nx">UserCard</span><span class="p">({</span><span class="w"> </span><span class="nx">user</span><span class="p">,</span><span class="w"> </span><span class="nx">onEdit</span><span class="w"> </span><span class="p">}</span><span class="o">:</span><span class="w"> </span><span class="nx">UserCardProps</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-59-2"><a id="__codelineno-59-2" name="__codelineno-59-2" href="#__codelineno-59-2"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="o">&lt;</span><span class="nx">div</span><span class="w"> </span><span class="nx">onClick</span><span class="o">=</span><span class="p">{()</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="nx">onEdit</span><span class="o">?</span><span class="p">.(</span><span class="nx">user</span><span class="p">)}</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">user</span><span class="p">.</span><span class="nx">name</span><span class="p">}</span><span class="o">&lt;</span><span class="err">/div&gt;;</span>
</span><span id="__span-59-3"><a id="__codelineno-59-3" name="__codelineno-59-3" href="#__codelineno-59-3"></a><span class="p">}</span>
</span></code></pre></div></p>
<p><strong>Bad:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-60-1"><a id="__codelineno-60-1" name="__codelineno-60-1" href="#__codelineno-60-1"></a><span class="kd">function</span><span class="w"> </span><span class="nx">UserCard</span><span class="p">(</span><span class="nx">props</span><span class="o">:</span><span class="w"> </span><span class="kt">UserCardProps</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-60-2"><a id="__codelineno-60-2" name="__codelineno-60-2" href="#__codelineno-60-2"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="o">&lt;</span><span class="nx">div</span><span class="w"> </span><span class="nx">onClick</span><span class="o">=</span><span class="p">{()</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="nx">props</span><span class="p">.</span><span class="nx">onEdit</span><span class="o">?</span><span class="p">.(</span><span class="nx">props</span><span class="p">.</span><span class="nx">user</span><span class="p">)}</span><span class="o">&gt;</span><span class="p">{</span><span class="nx">props</span><span class="p">.</span><span class="nx">user</span><span class="p">.</span><span class="nx">name</span><span class="p">}</span><span class="o">&lt;</span><span class="err">/div&gt;;</span>
</span><span id="__span-60-3"><a id="__codelineno-60-3" name="__codelineno-60-3" href="#__codelineno-60-3"></a><span class="p">}</span>
</span></code></pre></div></p>
<h3 id="key-prop">Key Prop<a class="headerlink" href="#key-prop" title="Permanent link">&para;</a></h3>
<p>Always provide key for list items:</p>
<p><strong>Good:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-61-1"><a id="__codelineno-61-1" name="__codelineno-61-1" href="#__codelineno-61-1"></a><span class="p">{</span><span class="nx">users</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">user</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="p">(</span>
</span><span id="__span-61-2"><a id="__codelineno-61-2" name="__codelineno-61-2" href="#__codelineno-61-2"></a><span class="w"> </span><span class="o">&lt;</span><span class="nx">UserCard</span><span class="w"> </span><span class="nx">key</span><span class="o">=</span><span class="p">{</span><span class="nx">user</span><span class="p">.</span><span class="nx">id</span><span class="p">}</span><span class="w"> </span><span class="nx">user</span><span class="o">=</span><span class="p">{</span><span class="nx">user</span><span class="p">}</span><span class="w"> </span><span class="o">/&gt;</span>
</span><span id="__span-61-3"><a id="__codelineno-61-3" name="__codelineno-61-3" href="#__codelineno-61-3"></a><span class="p">))}</span>
</span></code></pre></div></p>
<p><strong>Bad:</strong>
<div class="language-typescript highlight"><pre><span></span><code><span id="__span-62-1"><a id="__codelineno-62-1" name="__codelineno-62-1" href="#__codelineno-62-1"></a><span class="p">{</span><span class="nx">users</span><span class="p">.</span><span class="nx">map</span><span class="p">((</span><span class="nx">user</span><span class="p">,</span><span class="w"> </span><span class="nx">index</span><span class="p">)</span><span class="w"> </span><span class="p">=&gt;</span><span class="w"> </span><span class="p">(</span>
</span><span id="__span-62-2"><a id="__codelineno-62-2" name="__codelineno-62-2" href="#__codelineno-62-2"></a><span class="w"> </span><span class="o">&lt;</span><span class="nx">UserCard</span><span class="w"> </span><span class="nx">key</span><span class="o">=</span><span class="p">{</span><span class="nx">index</span><span class="p">}</span><span class="w"> </span><span class="nx">user</span><span class="o">=</span><span class="p">{</span><span class="nx">user</span><span class="p">}</span><span class="w"> </span><span class="o">/&gt;</span>
</span><span id="__span-62-3"><a id="__codelineno-62-3" name="__codelineno-62-3" href="#__codelineno-62-3"></a><span class="p">))}</span>
</span></code></pre></div></p>
<h2 id="editor-integration">Editor Integration<a class="headerlink" href="#editor-integration" title="Permanent link">&para;</a></h2>
<h3 id="vscode-settings">VSCode Settings<a class="headerlink" href="#vscode-settings" title="Permanent link">&para;</a></h3>
<p>Create <code>.vscode/settings.json</code>:</p>
<div class="language-json highlight"><pre><span></span><code><span id="__span-63-1"><a id="__codelineno-63-1" name="__codelineno-63-1" href="#__codelineno-63-1"></a><span class="p">{</span>
</span><span id="__span-63-2"><a id="__codelineno-63-2" name="__codelineno-63-2" href="#__codelineno-63-2"></a><span class="w"> </span><span class="nt">&quot;editor.formatOnSave&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-63-3"><a id="__codelineno-63-3" name="__codelineno-63-3" href="#__codelineno-63-3"></a><span class="w"> </span><span class="nt">&quot;editor.defaultFormatter&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;esbenp.prettier-vscode&quot;</span><span class="p">,</span>
</span><span id="__span-63-4"><a id="__codelineno-63-4" name="__codelineno-63-4" href="#__codelineno-63-4"></a><span class="w"> </span><span class="nt">&quot;editor.codeActionsOnSave&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-63-5"><a id="__codelineno-63-5" name="__codelineno-63-5" href="#__codelineno-63-5"></a><span class="w"> </span><span class="nt">&quot;source.fixAll.eslint&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span>
</span><span id="__span-63-6"><a id="__codelineno-63-6" name="__codelineno-63-6" href="#__codelineno-63-6"></a><span class="w"> </span><span class="p">},</span>
</span><span id="__span-63-7"><a id="__codelineno-63-7" name="__codelineno-63-7" href="#__codelineno-63-7"></a><span class="w"> </span><span class="nt">&quot;typescript.tsdk&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;node_modules/typescript/lib&quot;</span><span class="p">,</span>
</span><span id="__span-63-8"><a id="__codelineno-63-8" name="__codelineno-63-8" href="#__codelineno-63-8"></a><span class="w"> </span><span class="nt">&quot;typescript.enablePromptUseWorkspaceTsdk&quot;</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span><span class="p">,</span>
</span><span id="__span-63-9"><a id="__codelineno-63-9" name="__codelineno-63-9" href="#__codelineno-63-9"></a><span class="w"> </span><span class="nt">&quot;[typescript]&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-63-10"><a id="__codelineno-63-10" name="__codelineno-63-10" href="#__codelineno-63-10"></a><span class="w"> </span><span class="nt">&quot;editor.defaultFormatter&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;esbenp.prettier-vscode&quot;</span>
</span><span id="__span-63-11"><a id="__codelineno-63-11" name="__codelineno-63-11" href="#__codelineno-63-11"></a><span class="w"> </span><span class="p">},</span>
</span><span id="__span-63-12"><a id="__codelineno-63-12" name="__codelineno-63-12" href="#__codelineno-63-12"></a><span class="w"> </span><span class="nt">&quot;[typescriptreact]&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-63-13"><a id="__codelineno-63-13" name="__codelineno-63-13" href="#__codelineno-63-13"></a><span class="w"> </span><span class="nt">&quot;editor.defaultFormatter&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;esbenp.prettier-vscode&quot;</span>
</span><span id="__span-63-14"><a id="__codelineno-63-14" name="__codelineno-63-14" href="#__codelineno-63-14"></a><span class="w"> </span><span class="p">}</span>
</span><span id="__span-63-15"><a id="__codelineno-63-15" name="__codelineno-63-15" href="#__codelineno-63-15"></a><span class="p">}</span>
</span></code></pre></div>
<h3 id="pre-commit-hook">Pre-commit Hook<a class="headerlink" href="#pre-commit-hook" title="Permanent link">&para;</a></h3>
<p>Install husky for pre-commit checks:</p>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-64-1"><a id="__codelineno-64-1" name="__codelineno-64-1" href="#__codelineno-64-1"></a>npm<span class="w"> </span>install<span class="w"> </span>--save-dev<span class="w"> </span>husky<span class="w"> </span>lint-staged
</span><span id="__span-64-2"><a id="__codelineno-64-2" name="__codelineno-64-2" href="#__codelineno-64-2"></a>npx<span class="w"> </span>husky<span class="w"> </span>install
</span></code></pre></div>
<p><strong>package.json:</strong>
<div class="language-json highlight"><pre><span></span><code><span id="__span-65-1"><a id="__codelineno-65-1" name="__codelineno-65-1" href="#__codelineno-65-1"></a><span class="p">{</span>
</span><span id="__span-65-2"><a id="__codelineno-65-2" name="__codelineno-65-2" href="#__codelineno-65-2"></a><span class="w"> </span><span class="nt">&quot;lint-staged&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-65-3"><a id="__codelineno-65-3" name="__codelineno-65-3" href="#__codelineno-65-3"></a><span class="w"> </span><span class="nt">&quot;*.{ts,tsx}&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">[</span>
</span><span id="__span-65-4"><a id="__codelineno-65-4" name="__codelineno-65-4" href="#__codelineno-65-4"></a><span class="w"> </span><span class="s2">&quot;eslint --fix&quot;</span><span class="p">,</span>
</span><span id="__span-65-5"><a id="__codelineno-65-5" name="__codelineno-65-5" href="#__codelineno-65-5"></a><span class="w"> </span><span class="s2">&quot;prettier --write&quot;</span>
</span><span id="__span-65-6"><a id="__codelineno-65-6" name="__codelineno-65-6" href="#__codelineno-65-6"></a><span class="w"> </span><span class="p">]</span>
</span><span id="__span-65-7"><a id="__codelineno-65-7" name="__codelineno-65-7" href="#__codelineno-65-7"></a><span class="w"> </span><span class="p">},</span>
</span><span id="__span-65-8"><a id="__codelineno-65-8" name="__codelineno-65-8" href="#__codelineno-65-8"></a><span class="w"> </span><span class="nt">&quot;scripts&quot;</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
</span><span id="__span-65-9"><a id="__codelineno-65-9" name="__codelineno-65-9" href="#__codelineno-65-9"></a><span class="w"> </span><span class="nt">&quot;prepare&quot;</span><span class="p">:</span><span class="w"> </span><span class="s2">&quot;husky install&quot;</span>
</span><span id="__span-65-10"><a id="__codelineno-65-10" name="__codelineno-65-10" href="#__codelineno-65-10"></a><span class="w"> </span><span class="p">}</span>
</span><span id="__span-65-11"><a id="__codelineno-65-11" name="__codelineno-65-11" href="#__codelineno-65-11"></a><span class="p">}</span>
</span></code></pre></div></p>
<p><strong>.husky/pre-commit:</strong>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-66-1"><a id="__codelineno-66-1" name="__codelineno-66-1" href="#__codelineno-66-1"></a><span class="ch">#!/bin/sh</span>
</span><span id="__span-66-2"><a id="__codelineno-66-2" name="__codelineno-66-2" href="#__codelineno-66-2"></a>.<span class="w"> </span><span class="s2">&quot;</span><span class="k">$(</span>dirname<span class="w"> </span><span class="s2">&quot;</span><span class="nv">$0</span><span class="s2">&quot;</span><span class="k">)</span><span class="s2">/_/husky.sh&quot;</span>
</span><span id="__span-66-3"><a id="__codelineno-66-3" name="__codelineno-66-3" href="#__codelineno-66-3"></a>
</span><span id="__span-66-4"><a id="__codelineno-66-4" name="__codelineno-66-4" href="#__codelineno-66-4"></a>npx<span class="w"> </span>lint-staged
</span></code></pre></div></p>
<h2 id="quick-reference">Quick Reference<a class="headerlink" href="#quick-reference" title="Permanent link">&para;</a></h2>
<h3 id="run-linting">Run Linting<a class="headerlink" href="#run-linting" title="Permanent link">&para;</a></h3>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-67-1"><a id="__codelineno-67-1" name="__codelineno-67-1" href="#__codelineno-67-1"></a><span class="c1"># Lint</span>
</span><span id="__span-67-2"><a id="__codelineno-67-2" name="__codelineno-67-2" href="#__codelineno-67-2"></a>npm<span class="w"> </span>run<span class="w"> </span>lint
</span><span id="__span-67-3"><a id="__codelineno-67-3" name="__codelineno-67-3" href="#__codelineno-67-3"></a>
</span><span id="__span-67-4"><a id="__codelineno-67-4" name="__codelineno-67-4" href="#__codelineno-67-4"></a><span class="c1"># Auto-fix</span>
</span><span id="__span-67-5"><a id="__codelineno-67-5" name="__codelineno-67-5" href="#__codelineno-67-5"></a>npm<span class="w"> </span>run<span class="w"> </span>lint:fix
</span><span id="__span-67-6"><a id="__codelineno-67-6" name="__codelineno-67-6" href="#__codelineno-67-6"></a>
</span><span id="__span-67-7"><a id="__codelineno-67-7" name="__codelineno-67-7" href="#__codelineno-67-7"></a><span class="c1"># Format</span>
</span><span id="__span-67-8"><a id="__codelineno-67-8" name="__codelineno-67-8" href="#__codelineno-67-8"></a>npm<span class="w"> </span>run<span class="w"> </span>format
</span><span id="__span-67-9"><a id="__codelineno-67-9" name="__codelineno-67-9" href="#__codelineno-67-9"></a>
</span><span id="__span-67-10"><a id="__codelineno-67-10" name="__codelineno-67-10" href="#__codelineno-67-10"></a><span class="c1"># Type-check</span>
</span><span id="__span-67-11"><a id="__codelineno-67-11" name="__codelineno-67-11" href="#__codelineno-67-11"></a>npm<span class="w"> </span>run<span class="w"> </span>type-check
</span></code></pre></div>
<h3 id="common-fixes">Common Fixes<a class="headerlink" href="#common-fixes" title="Permanent link">&para;</a></h3>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-68-1"><a id="__codelineno-68-1" name="__codelineno-68-1" href="#__codelineno-68-1"></a><span class="c1"># Fix all auto-fixable issues</span>
</span><span id="__span-68-2"><a id="__codelineno-68-2" name="__codelineno-68-2" href="#__codelineno-68-2"></a>npm<span class="w"> </span>run<span class="w"> </span>lint:fix<span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span>npm<span class="w"> </span>run<span class="w"> </span>format
</span><span id="__span-68-3"><a id="__codelineno-68-3" name="__codelineno-68-3" href="#__codelineno-68-3"></a>
</span><span id="__span-68-4"><a id="__codelineno-68-4" name="__codelineno-68-4" href="#__codelineno-68-4"></a><span class="c1"># Type-check both projects</span>
</span><span id="__span-68-5"><a id="__codelineno-68-5" name="__codelineno-68-5" href="#__codelineno-68-5"></a><span class="nb">cd</span><span class="w"> </span>api<span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span>npm<span class="w"> </span>run<span class="w"> </span>type-check<span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="nb">cd</span><span class="w"> </span>../admin<span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span>npm<span class="w"> </span>run<span class="w"> </span>type-check
</span></code></pre></div>
<h2 id="related-documentation">Related Documentation<a class="headerlink" href="#related-documentation" title="Permanent link">&para;</a></h2>
<ul>
<li><strong>Setup:</strong> <a href="../local-setup/">Local Development Setup</a></li>
<li><strong>TypeScript:</strong> <a href="../typescript/">TypeScript Guide</a></li>
<li><strong>Testing:</strong> <a href="../testing/">Testing Guide</a></li>
<li><strong>Git:</strong> <a href="../git-workflow/">Git Workflow</a></li>
</ul>
<h2 id="summary">Summary<a class="headerlink" href="#summary" title="Permanent link">&para;</a></h2>
<p>You now know:
- ✅ TypeScript configuration (strict mode)
- ✅ ESLint rules and plugins
- ✅ Prettier configuration
- ✅ Naming conventions (files, variables, types)
- ✅ File organization patterns
- ✅ Code patterns (async/await, error handling)
- ✅ Comment and documentation standards
- ✅ Git commit message format
- ✅ React patterns and best practices
- ✅ Editor integration (VSCode, pre-commit hooks)</p>
<p><strong>Quick Start:</strong>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-69-1"><a id="__codelineno-69-1" name="__codelineno-69-1" href="#__codelineno-69-1"></a><span class="c1"># Auto-fix and format</span>
</span><span id="__span-69-2"><a id="__codelineno-69-2" name="__codelineno-69-2" href="#__codelineno-69-2"></a>npm<span class="w"> </span>run<span class="w"> </span>lint:fix<span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span>npm<span class="w"> </span>run<span class="w"> </span>format
</span><span id="__span-69-3"><a id="__codelineno-69-3" name="__codelineno-69-3" href="#__codelineno-69-3"></a>
</span><span id="__span-69-4"><a id="__codelineno-69-4" name="__codelineno-69-4" href="#__codelineno-69-4"></a><span class="c1"># Check types</span>
</span><span id="__span-69-5"><a id="__codelineno-69-5" name="__codelineno-69-5" href="#__codelineno-69-5"></a>npm<span class="w"> </span>run<span class="w"> </span>type-check
</span><span id="__span-69-6"><a id="__codelineno-69-6" name="__codelineno-69-6" href="#__codelineno-69-6"></a>
</span><span id="__span-69-7"><a id="__codelineno-69-7" name="__codelineno-69-7" href="#__codelineno-69-7"></a><span class="c1"># Pre-commit</span>
</span><span id="__span-69-8"><a id="__codelineno-69-8" name="__codelineno-69-8" href="#__codelineno-69-8"></a>npm<span class="w"> </span>run<span class="w"> </span>lint:fix<span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span>npm<span class="w"> </span>run<span class="w"> </span>format<span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span>npm<span class="w"> </span>run<span class="w"> </span>type-check
</span></code></pre></div></p>
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