deploy: a0dad147ccf1d831c5f48d8d0e868160a23cc92c

1 files changed, 1 insertions, 1 deletions

diff --git a/2023/04/30/TypeScript-With-Rust-Errors-No-Try-Catch-Heresy/index.html b/2023/04/30/TypeScript-With-Rust-Errors-No-Try-Catch-Heresy/index.html
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+++ b/2023/04/30/TypeScript-With-Rust-Errors-No-Try-Catch-Heresy/index.html
@@ -215,7 +215,7 @@
 <figure class="highlight typescript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">export</span> <span class="keyword">type</span> <span class="title class_">Safe</span>&lt;T&gt; =  </span><br><span class="line">  | &#123;  </span><br><span class="line">    <span class="attr">success</span>: <span class="literal">true</span>;  </span><br><span class="line">    <span class="attr">data</span>: T;  </span><br><span class="line">  &#125;  </span><br><span class="line">  | &#123;  </span><br><span class="line">    <span class="attr">success</span>: <span class="literal">false</span>;  </span><br><span class="line">    <span class="attr">error</span>: <span class="built_in">string</span>;  </span><br><span class="line">  &#125;;</span><br></pre></td></tr></table></figure>
 
 <p>we do need a few try&#x2F;catches. The good thing is we only need about two, not 100,000:</p>
-<figure class="highlight typescript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">export</span> <span class="keyword">function</span> safe&lt;T&gt;(<span class="attr">promise</span>: <span class="title class_">Promise</span>&lt;T&gt;, err?: <span class="built_in">string</span>): <span class="title class_">Promise</span>&lt;<span class="title class_">Safe</span>&lt;T&gt;&gt;;</span><br><span class="line"><span class="keyword">export</span> <span class="keyword">function</span> safe&lt;T&gt;(<span class="attr">func</span>: <span class="function">() =&gt;</span> T, err?: <span class="built_in">string</span>): <span class="title class_">Safe</span>&lt;T&gt;;</span><br><span class="line"><span class="keyword">export</span> <span class="keyword">function</span> safe&lt;T&gt;(</span><br><span class="line">  <span class="attr">promiseOrFunc</span>: <span class="title class_">Promise</span>&lt;T&gt; | (<span class="function">() =&gt;</span> T),</span><br><span class="line">  err?: <span class="built_in">string</span>,</span><br><span class="line">): <span class="title class_">Promise</span>&lt;<span class="title class_">Safe</span>&lt;T&gt;&gt; | <span class="title class_">Safe</span>&lt;T&gt; &#123;</span><br><span class="line">  <span class="keyword">if</span> (promiseOrFunc <span class="keyword">instanceof</span> <span class="title class_">Promise</span>) &#123;</span><br><span class="line">    <span class="keyword">return</span> <span class="title function_">safeAsync</span>(promiseOrFunc, err);</span><br><span class="line">  &#125;</span><br><span class="line">  <span class="keyword">return</span> <span class="title function_">safeSync</span>(promiseOrFunc, err);</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="keyword">async</span> <span class="keyword">function</span> safeAsync&lt;T&gt;(</span><br><span class="line">  <span class="attr">promise</span>: <span class="title class_">Promise</span>&lt;T&gt;, </span><br><span class="line">  err?: <span class="built_in">string</span></span><br><span class="line">): <span class="title class_">Promise</span>&lt;<span class="title class_">Safe</span>&lt;T&gt;&gt; &#123;</span><br><span class="line">  <span class="keyword">try</span> &#123;</span><br><span class="line">    <span class="keyword">const</span> data = <span class="keyword">await</span> promise;</span><br><span class="line">    <span class="keyword">return</span> &#123; data, <span class="attr">success</span>: <span class="literal">true</span> &#125;;</span><br><span class="line">  &#125; <span class="keyword">catch</span> (e) &#123;</span><br><span class="line">    <span class="variable language_">console</span>.<span class="title function_">error</span>(e);</span><br><span class="line">    <span class="keyword">if</span> (err !== <span class="literal">undefined</span>) &#123;</span><br><span class="line">      <span class="keyword">return</span> &#123; <span class="attr">success</span>: <span class="literal">false</span>, <span class="attr">error</span>: err &#125;;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">if</span> (e <span class="keyword">instanceof</span> <span class="title class_">Error</span>) &#123;</span><br><span class="line">      <span class="keyword">return</span> &#123; <span class="attr">success</span>: <span class="literal">false</span>, <span class="attr">error</span>: e.<span class="property">message</span> &#125;;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">return</span> &#123; <span class="attr">success</span>: <span class="literal">false</span>, <span class="attr">error</span>: <span class="string">&quot;Something went wrong&quot;</span> &#125;;</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="keyword">function</span> safeSync&lt;T&gt;(</span><br><span class="line">  <span class="attr">func</span>: <span class="function">() =&gt;</span> T, </span><br><span class="line">  err?: <span class="built_in">string</span></span><br><span class="line">): <span class="title class_">Safe</span>&lt;T&gt; &#123;</span><br><span class="line">  <span class="keyword">try</span> &#123;</span><br><span class="line">    <span class="keyword">const</span> data = <span class="title function_">func</span>();</span><br><span class="line">    <span class="keyword">return</span> &#123; data, <span class="attr">success</span>: <span class="literal">true</span> &#125;;</span><br><span class="line">  &#125; <span class="keyword">catch</span> (e) &#123;</span><br><span class="line">    <span class="variable language_">console</span>.<span class="title function_">error</span>(e);</span><br><span class="line">    <span class="keyword">if</span> (err !== <span class="literal">undefined</span>) &#123;</span><br><span class="line">      <span class="keyword">return</span> &#123; <span class="attr">success</span>: <span class="literal">false</span>, <span class="attr">error</span>: err &#125;;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">if</span> (e <span class="keyword">instanceof</span> <span class="title class_">Error</span>) &#123;</span><br><span class="line">      <span class="keyword">return</span> &#123; <span class="attr">success</span>: <span class="literal">false</span>, <span class="attr">error</span>: e.<span class="property">message</span> &#125;;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">return</span> &#123; <span class="attr">success</span>: <span class="literal">false</span>, <span class="attr">error</span>: <span class="string">&quot;Something went wrong&quot;</span> &#125;;</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
+<figure class="highlight typescript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">export</span> <span class="keyword">function</span> safe&lt;T&gt;(<span class="attr">promise</span>: <span class="title class_">Promise</span>&lt;T&gt;, <span class="attr">err</span>?: <span class="built_in">string</span>): <span class="title class_">Promise</span>&lt;<span class="title class_">Safe</span>&lt;T&gt;&gt;;</span><br><span class="line"><span class="keyword">export</span> <span class="keyword">function</span> safe&lt;T&gt;(<span class="attr">func</span>: <span class="function">() =&gt;</span> T, <span class="attr">err</span>?: <span class="built_in">string</span>): <span class="title class_">Safe</span>&lt;T&gt;;</span><br><span class="line"><span class="keyword">export</span> <span class="keyword">function</span> safe&lt;T&gt;(</span><br><span class="line">  <span class="attr">promiseOrFunc</span>: <span class="title class_">Promise</span>&lt;T&gt; | (<span class="function">() =&gt;</span> T),</span><br><span class="line">  <span class="attr">err</span>?: <span class="built_in">string</span>,</span><br><span class="line">): <span class="title class_">Promise</span>&lt;<span class="title class_">Safe</span>&lt;T&gt;&gt; | <span class="title class_">Safe</span>&lt;T&gt; &#123;</span><br><span class="line">  <span class="keyword">if</span> (promiseOrFunc <span class="keyword">instanceof</span> <span class="title class_">Promise</span>) &#123;</span><br><span class="line">    <span class="keyword">return</span> <span class="title function_">safeAsync</span>(promiseOrFunc, err);</span><br><span class="line">  &#125;</span><br><span class="line">  <span class="keyword">return</span> <span class="title function_">safeSync</span>(promiseOrFunc, err);</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="keyword">async</span> <span class="keyword">function</span> safeAsync&lt;T&gt;(</span><br><span class="line">  <span class="attr">promise</span>: <span class="title class_">Promise</span>&lt;T&gt;, </span><br><span class="line">  <span class="attr">err</span>?: <span class="built_in">string</span></span><br><span class="line">): <span class="title class_">Promise</span>&lt;<span class="title class_">Safe</span>&lt;T&gt;&gt; &#123;</span><br><span class="line">  <span class="keyword">try</span> &#123;</span><br><span class="line">    <span class="keyword">const</span> data = <span class="keyword">await</span> promise;</span><br><span class="line">    <span class="keyword">return</span> &#123; data, <span class="attr">success</span>: <span class="literal">true</span> &#125;;</span><br><span class="line">  &#125; <span class="keyword">catch</span> (e) &#123;</span><br><span class="line">    <span class="variable language_">console</span>.<span class="title function_">error</span>(e);</span><br><span class="line">    <span class="keyword">if</span> (err !== <span class="literal">undefined</span>) &#123;</span><br><span class="line">      <span class="keyword">return</span> &#123; <span class="attr">success</span>: <span class="literal">false</span>, <span class="attr">error</span>: err &#125;;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">if</span> (e <span class="keyword">instanceof</span> <span class="title class_">Error</span>) &#123;</span><br><span class="line">      <span class="keyword">return</span> &#123; <span class="attr">success</span>: <span class="literal">false</span>, <span class="attr">error</span>: e.<span class="property">message</span> &#125;;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">return</span> &#123; <span class="attr">success</span>: <span class="literal">false</span>, <span class="attr">error</span>: <span class="string">&quot;Something went wrong&quot;</span> &#125;;</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="keyword">function</span> safeSync&lt;T&gt;(</span><br><span class="line">  <span class="attr">func</span>: <span class="function">() =&gt;</span> T, </span><br><span class="line">  <span class="attr">err</span>?: <span class="built_in">string</span></span><br><span class="line">): <span class="title class_">Safe</span>&lt;T&gt; &#123;</span><br><span class="line">  <span class="keyword">try</span> &#123;</span><br><span class="line">    <span class="keyword">const</span> data = <span class="title function_">func</span>();</span><br><span class="line">    <span class="keyword">return</span> &#123; data, <span class="attr">success</span>: <span class="literal">true</span> &#125;;</span><br><span class="line">  &#125; <span class="keyword">catch</span> (e) &#123;</span><br><span class="line">    <span class="variable language_">console</span>.<span class="title function_">error</span>(e);</span><br><span class="line">    <span class="keyword">if</span> (err !== <span class="literal">undefined</span>) &#123;</span><br><span class="line">      <span class="keyword">return</span> &#123; <span class="attr">success</span>: <span class="literal">false</span>, <span class="attr">error</span>: err &#125;;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">if</span> (e <span class="keyword">instanceof</span> <span class="title class_">Error</span>) &#123;</span><br><span class="line">      <span class="keyword">return</span> &#123; <span class="attr">success</span>: <span class="literal">false</span>, <span class="attr">error</span>: e.<span class="property">message</span> &#125;;</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">return</span> &#123; <span class="attr">success</span>: <span class="literal">false</span>, <span class="attr">error</span>: <span class="string">&quot;Something went wrong&quot;</span> &#125;;</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
 
 <p>This is just a wrapper with our <code>Safe</code> type as the return one. But sometimes simple things are all you need. Let’s combine them with the example from above.</p>
 <figure class="highlight typescript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">const</span> request = &#123; <span class="attr">name</span>: “test”, <span class="attr">value</span>: <span class="number">2n</span> &#125;;  </span><br><span class="line"><span class="keyword">const</span> body = <span class="title function_">safe</span>(  </span><br><span class="line">  <span class="function">() =&gt;</span> <span class="title class_">JSON</span>.<span class="title function_">stringify</span>(request),  </span><br><span class="line">  “<span class="title class_">Failed</span> to serialize request”,  </span><br><span class="line">);  </span><br><span class="line"><span class="keyword">if</span> (!body.<span class="property">success</span>) &#123;  </span><br><span class="line">  <span class="comment">// handle error (body.error)  </span></span><br><span class="line">  <span class="keyword">return</span>;  </span><br><span class="line">&#125;  </span><br><span class="line"><span class="keyword">const</span> response = <span class="keyword">await</span> <span class="title function_">safe</span>(  </span><br><span class="line">  <span class="title function_">fetch</span>(<span class="string">&quot;https://example.com&quot;</span>, &#123;  </span><br><span class="line">    <span class="attr">method</span>: “<span class="variable constant_">POST</span>”,  </span><br><span class="line">    <span class="attr">body</span>: body.<span class="property">data</span>,  </span><br><span class="line">  &#125;),  </span><br><span class="line">);  </span><br><span class="line"><span class="keyword">if</span> (!response.<span class="property">success</span>) &#123;  </span><br><span class="line">  <span class="comment">// handle error (response.error)  </span></span><br><span class="line">  <span class="keyword">return</span>;  </span><br><span class="line">&#125;  </span><br><span class="line"><span class="keyword">if</span> (!response.<span class="property">data</span>.<span class="property">ok</span>) &#123;  </span><br><span class="line">  <span class="comment">// handle network error  </span></span><br><span class="line">  <span class="keyword">return</span>;  </span><br><span class="line">&#125;  </span><br><span class="line"><span class="comment">// handle response (body.data)</span></span><br></pre></td></tr></table></figure>