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30secondsofcode
2018-10-19 06:06:32 +00:00
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@ -120,7 +120,7 @@
</pre></div><div class="card code-card"><div class="corner intermediate"></div><div class="section card-content"><h4 id="deepfreeze">deepFreeze</h4><p>Deep freezes an object.</p><p>Calls <code>Object.freeze(obj)</code> recursively on all unfrozen properties of passed object that are <code>instanceof</code> object.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js"><span class="token keyword">const</span> <span class="token function-variable function">deepFreeze</span> <span class="token operator">=</span> obj <span class="token operator">=></span>
Object<span class="token punctuation">.</span><span class="token function">keys</span><span class="token punctuation">(</span>obj<span class="token punctuation">).</span><span class="token function">forEach</span><span class="token punctuation">(</span>
prop <span class="token operator">=>
!</span>obj<span class="token punctuation">[</span>prop<span class="token punctuation">]</span> <span class="token keyword">instanceof</span> <span class="token class-name">Object</span> <span class="token operator">||</span> Object<span class="token punctuation">.</span><span class="token function">isFrozen</span><span class="token punctuation">(</span>obj<span class="token punctuation">[</span>prop<span class="token punctuation">])</span> <span class="token operator">?</span> <span class="token keyword">null</span> <span class="token punctuation">:</span> <span class="token function">deepFreeze</span><span class="token punctuation">(</span>obj<span class="token punctuation">[</span>prop<span class="token punctuation">])
!</span><span class="token punctuation">(</span>obj<span class="token punctuation">[</span>prop<span class="token punctuation">]</span> <span class="token keyword">instanceof</span> <span class="token class-name">Object</span><span class="token punctuation">)</span> <span class="token operator">||</span> Object<span class="token punctuation">.</span><span class="token function">isFrozen</span><span class="token punctuation">(</span>obj<span class="token punctuation">[</span>prop<span class="token punctuation">])</span> <span class="token operator">?</span> <span class="token keyword">null</span> <span class="token punctuation">:</span> <span class="token function">deepFreeze</span><span class="token punctuation">(</span>obj<span class="token punctuation">[</span>prop<span class="token punctuation">])
)</span> <span class="token operator">||</span> Object<span class="token punctuation">.</span><span class="token function">freeze</span><span class="token punctuation">(</span>obj<span class="token punctuation">);</span>
</pre><label class="collapse">examples</label><pre class="section card-examples language-js"><span class="token string">'use strict'</span><span class="token punctuation">;</span>
@ -134,9 +134,9 @@ o<span class="token punctuation">[</span><span class="token number">1</span><spa
target <span class="token keyword">in</span> obj
<span class="token operator">?</span> obj<span class="token punctuation">[</span>target<span class="token punctuation">]
:</span> Object<span class="token punctuation">.</span><span class="token function">values</span><span class="token punctuation">(</span>obj<span class="token punctuation">).</span><span class="token function">reduce</span><span class="token punctuation">((</span>acc<span class="token punctuation">,</span> val<span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span>acc <span class="token operator">!==</span> undefined<span class="token punctuation">)</span> <span class="token keyword">return</span> acc<span class="token punctuation">;</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">typeof</span> val <span class="token operator">===</span> <span class="token string">'object'</span><span class="token punctuation">)</span> <span class="token keyword">return</span> <span class="token function">dig</span><span class="token punctuation">(</span>val<span class="token punctuation">,</span> target<span class="token punctuation">);
},</span> undefined<span class="token punctuation">);</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span>acc <span class="token operator">!==</span> undefined<span class="token punctuation">)</span> <span class="token keyword">return</span> acc<span class="token punctuation">;</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">typeof</span> val <span class="token operator">===</span> <span class="token string">'object'</span><span class="token punctuation">)</span> <span class="token keyword">return</span> <span class="token function">dig</span><span class="token punctuation">(</span>val<span class="token punctuation">,</span> target<span class="token punctuation">);
},</span> undefined<span class="token punctuation">);</span>
</pre><label class="collapse">examples</label><pre class="section card-examples language-js"><span class="token keyword">const</span> data <span class="token operator">=</span> <span class="token punctuation">{</span>
level1<span class="token punctuation">: {</span>
level2<span class="token punctuation">: {</span>