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      <h1 class="title">std/private/jsutils</h1>
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  <li>
  <a class="reference reference-toplevel" href="#6" id="56">Imports</a>
</li>
<li>
  <details open>
    <summary><a class="reference reference-toplevel" href="#7" id="57">Types</a></summary>
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      <li><a class="reference" href="#ArrayBuffer" title="ArrayBuffer = ref object of JsRoot">ArrayBuffer</a></li>
<li><a class="reference" href="#BigUint64Array" title="BigUint64Array = ref object of JsRoot">BigUint64Array</a></li>
<li><a class="reference" href="#Float64Array" title="Float64Array = ref object of JsRoot">Float64Array</a></li>
<li><a class="reference" href="#Uint8Array" title="Uint8Array = ref object of JsRoot">Uint8Array</a></li>
<li><a class="reference" href="#Uint32Array" title="Uint32Array = ref object of JsRoot">Uint32Array</a></li>

    </ul>
  </details>
</li>
<li>
  <details open>
    <summary><a class="reference reference-toplevel" href="#10" id="60">Consts</a></summary>
    <ul class="simple simple-toc-section">
      <li><a class="reference" href="#hasWorkingInt64" title="hasWorkingInt64 = true">hasWorkingInt64</a></li>
<li><a class="reference" href="#jsNoBigInt64" title="jsNoBigInt64 = false">jsNoBigInt64</a></li>
<li><a class="reference" href="#maxSafeInteger" title="maxSafeInteger = 9007199254740991'i64">maxSafeInteger</a></li>

    </ul>
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    <summary><a class="reference reference-toplevel" href="#12" id="62">Procs</a></summary>
    <ul class="simple simple-toc-section">
      <ul class="simple nested-toc-section">[]
  <li><a class="reference" href="#%5B%5D%2CBigUint64Array%2Cint" title="`[]`(arr: BigUint64Array; i: int): JsBigInt">`[]`(arr: BigUint64Array; i: int): JsBigInt</a></li>
<li><a class="reference" href="#%5B%5D%2CUint8Array%2Cint" title="`[]`(arr: Uint8Array; i: int): uint8">`[]`(arr: Uint8Array; i: int): uint8</a></li>
<li><a class="reference" href="#%5B%5D%2CUint32Array%2Cint" title="`[]`(arr: Uint32Array; i: int): uint32">`[]`(arr: Uint32Array; i: int): uint32</a></li>

</ul>
<ul class="simple nested-toc-section">[]=
  <li><a class="reference" href="#%5B%5D%3D%2CFloat64Array%2Cint%2Cfloat" title="`[]=`(arr: Float64Array; i: int; v: float)">`[]=`(arr: Float64Array; i: int; v: float)</a></li>

</ul>
<ul class="simple nested-toc-section">getProtoName
  <li><a class="reference" href="#getProtoName%2CT" title="getProtoName[T](a: T): cstring">getProtoName[T](a: T): cstring</a></li>

</ul>
<ul class="simple nested-toc-section">hasBigUint64Array
  <li><a class="reference" href="#hasBigUint64Array" title="hasBigUint64Array(): bool">hasBigUint64Array(): bool</a></li>

</ul>
<ul class="simple nested-toc-section">hasJsBigInt
  <li><a class="reference" href="#hasJsBigInt" title="hasJsBigInt(): bool">hasJsBigInt(): bool</a></li>

</ul>
<ul class="simple nested-toc-section">isInteger
  <li><a class="reference" href="#isInteger%2CT" title="isInteger[T](x: T): bool">isInteger[T](x: T): bool</a></li>

</ul>
<ul class="simple nested-toc-section">isSafeInteger
  <li><a class="reference" href="#isSafeInteger%2CT" title="isSafeInteger[T](x: T): bool">isSafeInteger[T](x: T): bool</a></li>

</ul>
<ul class="simple nested-toc-section">jsConstructorName
  <li><a class="reference" href="#jsConstructorName%2CT" title="jsConstructorName[T](a: T): cstring">jsConstructorName[T](a: T): cstring</a></li>

</ul>
<ul class="simple nested-toc-section">jsTypeOf
  <li><a class="reference" href="#jsTypeOf%2CT" title="jsTypeOf[T](x: T): cstring">jsTypeOf[T](x: T): cstring</a></li>

</ul>
<ul class="simple nested-toc-section">newArrayBuffer
  <li><a class="reference" href="#newArrayBuffer%2Cint" title="newArrayBuffer(n: int): ArrayBuffer">newArrayBuffer(n: int): ArrayBuffer</a></li>

</ul>
<ul class="simple nested-toc-section">newBigUint64Array
  <li><a class="reference" href="#newBigUint64Array%2CArrayBuffer" title="newBigUint64Array(buffer: ArrayBuffer): BigUint64Array">newBigUint64Array(buffer: ArrayBuffer): BigUint64Array</a></li>

</ul>
<ul class="simple nested-toc-section">newFloat64Array
  <li><a class="reference" href="#newFloat64Array%2CArrayBuffer" title="newFloat64Array(buffer: ArrayBuffer): Float64Array">newFloat64Array(buffer: ArrayBuffer): Float64Array</a></li>

</ul>
<ul class="simple nested-toc-section">newUint8Array
  <li><a class="reference" href="#newUint8Array%2Cint" title="newUint8Array(n: int): Uint8Array">newUint8Array(n: int): Uint8Array</a></li>

</ul>
<ul class="simple nested-toc-section">newUint32Array
  <li><a class="reference" href="#newUint32Array%2CArrayBuffer" title="newUint32Array(buffer: ArrayBuffer): Uint32Array">newUint32Array(buffer: ArrayBuffer): Uint32Array</a></li>

</ul>

    </ul>
  </details>
</li>

</ul>

  </div>
  <div class="nine columns" id="content">
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L1" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L1" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

    <div id="tocRoot"></div>
    
    <p class="module-desc">
<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">private</span><span class="Operator">/</span><span class="Identifier">jsutils</span>
<span class="Keyword">let</span> <span class="Identifier">a</span> <span class="Punctuation">{</span><span class="Operator">.</span><span class="Identifier">importjs</span><span class="Punctuation">:</span> <span class="StringLit">&quot;Number.MAX_SAFE_INTEGER&quot;</span><span class="Operator">.</span><span class="Punctuation">}</span><span class="Punctuation">:</span> <span class="Identifier">int64</span>
<span class="Identifier">assert</span> <span class="Identifier">a</span> <span class="Operator">==</span> <span class="Identifier">maxSafeInteger</span></pre></p>
    <div class="section" id="6">
  <h1><a class="toc-backref" href="#6">Imports</a></h1>
  <dl class="item">
    <a class="reference external" href="jsbigints.html">jsbigints</a>
  </dl>
</div>
<div class="section" id="7">
  <h1><a class="toc-backref" href="#7">Types</a></h1>
  <dl class="item">
    <div id="ArrayBuffer">
  <dt><pre><a href="jsutils.html#ArrayBuffer"><span class="Identifier">ArrayBuffer</span></a> <span class="Other">=</span> <span class="Keyword">ref</span> <span class="Keyword">object</span> <span class="Keyword">of</span> <a href="system.html#JsRoot"><span class="Identifier">JsRoot</span></a></pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L5" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L5" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="BigUint64Array">
  <dt><pre><a href="jsutils.html#BigUint64Array"><span class="Identifier">BigUint64Array</span></a> <span class="Other">=</span> <span class="Keyword">ref</span> <span class="Keyword">object</span> <span class="Keyword">of</span> <a href="system.html#JsRoot"><span class="Identifier">JsRoot</span></a></pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L9" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L9" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="Float64Array">
  <dt><pre><a href="jsutils.html#Float64Array"><span class="Identifier">Float64Array</span></a> <span class="Other">=</span> <span class="Keyword">ref</span> <span class="Keyword">object</span> <span class="Keyword">of</span> <a href="system.html#JsRoot"><span class="Identifier">JsRoot</span></a></pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L6" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L6" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="Uint8Array">
  <dt><pre><a href="jsutils.html#Uint8Array"><span class="Identifier">Uint8Array</span></a> <span class="Other">=</span> <span class="Keyword">ref</span> <span class="Keyword">object</span> <span class="Keyword">of</span> <a href="system.html#JsRoot"><span class="Identifier">JsRoot</span></a></pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L8" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L8" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="Uint32Array">
  <dt><pre><a href="jsutils.html#Uint32Array"><span class="Identifier">Uint32Array</span></a> <span class="Other">=</span> <span class="Keyword">ref</span> <span class="Keyword">object</span> <span class="Keyword">of</span> <a href="system.html#JsRoot"><span class="Identifier">JsRoot</span></a></pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L7" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L7" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

  </dl>
</div>
<div class="section" id="10">
  <h1><a class="toc-backref" href="#10">Consts</a></h1>
  <dl class="item">
    <div id="hasWorkingInt64">
  <dt><pre><a href="jsutils.html#hasWorkingInt64"><span class="Identifier">hasWorkingInt64</span></a> <span class="Other">=</span> <span class="DecNumber">true</span></pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L95" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L95" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="jsNoBigInt64">
  <dt><pre><a href="jsutils.html#jsNoBigInt64"><span class="Identifier">jsNoBigInt64</span></a> <span class="Other">=</span> <span class="DecNumber">false</span></pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L86" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L86" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="maxSafeInteger">
  <dt><pre><a href="jsutils.html#maxSafeInteger"><span class="Identifier">maxSafeInteger</span></a> <span class="Other">=</span> <span class="DecNumber">9007199254740991'i64</span></pre></dt>
  <dd>
    
    The same as <tt class="docutils literal"><span class="pre"><span class="Identifier">Number</span><span class="Operator">.</span><span class="Identifier">MAX_SAFE_INTEGER</span></span></tt> or <tt class="docutils literal"><span class="pre"><span class="DecNumber">2</span><span class="Operator">^</span><span class="DecNumber">53</span> <span class="Operator">-</span> <span class="DecNumber">1</span></span></tt>. See <a class="reference external" href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER">https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER</a>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L61" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L61" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

  </dl>
</div>
<div class="section" id="12">
  <h1><a class="toc-backref" href="#12">Procs</a></h1>
  <dl class="item">
    <div id="[]-procs-all">
  <div id="[],BigUint64Array,int">
  <dt><pre><span class="Keyword">func</span> <a href="#%5B%5D%2CBigUint64Array%2Cint"><span class="Identifier">`[]`</span></a><span class="Other">(</span><span class="Identifier">arr</span><span class="Other">:</span> <a href="jsutils.html#BigUint64Array"><span class="Identifier">BigUint64Array</span></a><span class="Other">;</span> <span class="Identifier">i</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a><span class="Other">)</span><span class="Other">:</span> <a href="jsbigints.html#JsBigInt"><span class="Identifier">JsBigInt</span></a> {.<span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;#[#]&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L21" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L21" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="[],Uint8Array,int">
  <dt><pre><span class="Keyword">func</span> <a href="#%5B%5D%2CUint8Array%2Cint"><span class="Identifier">`[]`</span></a><span class="Other">(</span><span class="Identifier">arr</span><span class="Other">:</span> <a href="jsutils.html#Uint8Array"><span class="Identifier">Uint8Array</span></a><span class="Other">;</span> <span class="Identifier">i</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#uint8"><span class="Identifier">uint8</span></a> {.<span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;#[#]&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L20" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L20" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="[],Uint32Array,int">
  <dt><pre><span class="Keyword">func</span> <a href="#%5B%5D%2CUint32Array%2Cint"><span class="Identifier">`[]`</span></a><span class="Other">(</span><span class="Identifier">arr</span><span class="Other">:</span> <a href="jsutils.html#Uint32Array"><span class="Identifier">Uint32Array</span></a><span class="Other">;</span> <span class="Identifier">i</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#uint32"><span class="Identifier">uint32</span></a> {.<span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;#[#]&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L19" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L19" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="[]=-procs-all">
  <div id="[]=,Float64Array,int,float">
  <dt><pre><span class="Keyword">func</span> <a href="#%5B%5D%3D%2CFloat64Array%2Cint%2Cfloat"><span class="Identifier">`[]=`</span></a><span class="Other">(</span><span class="Identifier">arr</span><span class="Other">:</span> <a href="jsutils.html#Float64Array"><span class="Identifier">Float64Array</span></a><span class="Other">;</span> <span class="Identifier">i</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a><span class="Other">;</span> <span class="Identifier">v</span><span class="Other">:</span> <a href="system.html#float"><span class="Identifier">float</span></a><span class="Other">)</span> {.<span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;#[#] = #&quot;</span><span class="Other">,</span>
    <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L22" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L22" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="getProtoName-procs-all">
  <div id="getProtoName,T">
  <dt><pre><span class="Keyword">proc</span> <a href="#getProtoName%2CT"><span class="Identifier">getProtoName</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">a</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#cstring"><span class="Identifier">cstring</span></a> {.<span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;Object.prototype.toString.call(#)&quot;</span><span class="Other">,</span>
                                      <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Punctuation">[</span><span class="Identifier">jsffi</span><span class="Punctuation">,</span> <span class="Identifier">jsbigints</span><span class="Punctuation">]</span>
<span class="Keyword">type</span> <span class="Identifier">A</span> <span class="Operator">=</span> <span class="Keyword">ref</span> <span class="Keyword">object</span>
<span class="Identifier">assert</span> <span class="FloatNumber">1.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">getProtoName</span> <span class="Operator">==</span> <span class="StringLit">&quot;[object Number]&quot;</span>
<span class="Identifier">assert</span> <span class="StringLit">&quot;a&quot;</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">getProtoName</span> <span class="Operator">==</span> <span class="StringLit">&quot;[object String]&quot;</span>
<span class="Identifier">assert</span> <span class="RawData">big&quot;1&quot;</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">getProtoName</span> <span class="Operator">==</span> <span class="StringLit">&quot;[object BigInt]&quot;</span>
<span class="Identifier">assert</span> <span class="Identifier">false</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">getProtoName</span> <span class="Operator">==</span> <span class="StringLit">&quot;[object Boolean]&quot;</span>
<span class="Identifier">assert</span> <span class="Punctuation">(</span><span class="Identifier">a</span><span class="Punctuation">:</span> <span class="DecNumber">1</span><span class="Punctuation">)</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">getProtoName</span> <span class="Operator">==</span> <span class="StringLit">&quot;[object Object]&quot;</span>
<span class="Identifier">assert</span> <span class="Identifier">A</span><span class="Operator">.</span><span class="Identifier">default</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">getProtoName</span> <span class="Operator">==</span> <span class="StringLit">&quot;[object Null]&quot;</span>
<span class="Identifier">assert</span> <span class="Punctuation">[</span><span class="DecNumber">1</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">getProtoName</span> <span class="Operator">==</span> <span class="StringLit">&quot;[object Int32Array]&quot;</span> <span class="Comment"># implementation defined</span>
<span class="Identifier">assert</span> <span class="Operator">@</span><span class="Punctuation">[</span><span class="DecNumber">1</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">getProtoName</span> <span class="Operator">==</span> <span class="StringLit">&quot;[object Array]&quot;</span> <span class="Comment"># ditto</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L48" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L48" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="hasBigUint64Array-procs-all">
  <div id="hasBigUint64Array">
  <dt><pre><span class="Keyword">proc</span> <a href="#hasBigUint64Array"><span class="Identifier">hasBigUint64Array</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#bool"><span class="Identifier">bool</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L45" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L45" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="hasJsBigInt-procs-all">
  <div id="hasJsBigInt">
  <dt><pre><span class="Keyword">proc</span> <a href="#hasJsBigInt"><span class="Identifier">hasJsBigInt</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#bool"><span class="Identifier">bool</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L42" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L42" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="isInteger-procs-all">
  <div id="isInteger,T">
  <dt><pre><span class="Keyword">proc</span> <a href="#isInteger%2CT"><span class="Identifier">isInteger</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">x</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#bool"><span class="Identifier">bool</span></a> {.<span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;Number.isInteger(#)&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
                                <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">jsffi</span>
<span class="Identifier">assert</span> <span class="FloatNumber">1.</span><span class="Identifier">isInteger</span>
<span class="Identifier">assert</span> <span class="Keyword">not</span> <span class="FloatNumber">1.5</span><span class="Operator">.</span><span class="Identifier">isInteger</span>
<span class="Identifier">assert</span> <span class="FloatNumber">1.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">isInteger</span>
<span class="Identifier">assert</span> <span class="Keyword">not</span> <span class="FloatNumber">1.5</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">isInteger</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L68" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L68" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="isSafeInteger-procs-all">
  <div id="isSafeInteger,T">
  <dt><pre><span class="Keyword">proc</span> <a href="#isSafeInteger%2CT"><span class="Identifier">isSafeInteger</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">x</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#bool"><span class="Identifier">bool</span></a> {.<span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;Number.isSafeInteger(#)&quot;</span><span class="Other">,</span>
                                    <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">jsffi</span>
<span class="Identifier">assert</span> <span class="Keyword">not</span> <span class="StringLit">&quot;123&quot;</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">isSafeInteger</span>
<span class="Identifier">assert</span> <span class="FloatNumber">123.</span><span class="Identifier">isSafeInteger</span>
<span class="Identifier">assert</span> <span class="FloatNumber">123.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">isSafeInteger</span>
<span class="Keyword">when</span> <span class="Identifier">false</span><span class="Punctuation">:</span>
  <span class="Identifier">assert</span> <span class="FloatNumber">9007199254740991.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">isSafeInteger</span>
  <span class="Identifier">assert</span> <span class="Keyword">not</span> <span class="FloatNumber">9007199254740992.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">isSafeInteger</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L76" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L76" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="jsConstructorName-procs-all">
  <div id="jsConstructorName,T">
  <dt><pre><span class="Keyword">proc</span> <a href="#jsConstructorName%2CT"><span class="Identifier">jsConstructorName</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">a</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#cstring"><span class="Identifier">cstring</span></a></pre></dt>
  <dd>
    
    
<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">jsffi</span>
<span class="Keyword">let</span> <span class="Identifier">a</span> <span class="Operator">=</span> <span class="Identifier">array</span><span class="Punctuation">[</span><span class="DecNumber">2</span><span class="Punctuation">,</span> <span class="Identifier">float64</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">default</span>
<span class="Identifier">assert</span> <span class="Identifier">jsConstructorName</span><span class="Punctuation">(</span><span class="Identifier">a</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="StringLit">&quot;Float64Array&quot;</span>
<span class="Identifier">assert</span> <span class="Identifier">jsConstructorName</span><span class="Punctuation">(</span><span class="Identifier">a</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="StringLit">&quot;Float64Array&quot;</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L34" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L34" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="jsTypeOf-procs-all">
  <div id="jsTypeOf,T">
  <dt><pre><span class="Keyword">proc</span> <a href="#jsTypeOf%2CT"><span class="Identifier">jsTypeOf</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">x</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">)</span><span class="Other">:</span> <a href="system.html#cstring"><span class="Identifier">cstring</span></a> {.<span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;typeof(#)&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span>
                                  <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    Returns the name of the JsObject's JavaScript type as a cstring.
<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Punctuation">[</span><span class="Identifier">jsffi</span><span class="Punctuation">,</span> <span class="Identifier">jsbigints</span><span class="Punctuation">]</span>
<span class="Identifier">assert</span> <span class="Identifier">jsTypeOf</span><span class="Punctuation">(</span><span class="FloatNumber">1.</span><span class="Identifier">toJs</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="StringLit">&quot;number&quot;</span>
<span class="Identifier">assert</span> <span class="Identifier">jsTypeOf</span><span class="Punctuation">(</span><span class="Identifier">false</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="StringLit">&quot;boolean&quot;</span>
<span class="Identifier">assert</span> <span class="Punctuation">[</span><span class="DecNumber">1</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">jsTypeOf</span> <span class="Operator">==</span> <span class="StringLit">&quot;object&quot;</span> <span class="Comment"># note the difference with `getProtoName`</span>
<span class="Identifier">assert</span> <span class="RawData">big&quot;1&quot;</span><span class="Operator">.</span><span class="Identifier">toJs</span><span class="Operator">.</span><span class="Identifier">jsTypeOf</span> <span class="Operator">==</span> <span class="StringLit">&quot;bigint&quot;</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L24" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L24" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="newArrayBuffer-procs-all">
  <div id="newArrayBuffer,int">
  <dt><pre><span class="Keyword">func</span> <a href="#newArrayBuffer%2Cint"><span class="Identifier">newArrayBuffer</span></a><span class="Other">(</span><span class="Identifier">n</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a><span class="Other">)</span><span class="Other">:</span> <a href="jsutils.html#ArrayBuffer"><span class="Identifier">ArrayBuffer</span></a> {.<span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;new ArrayBuffer(#)&quot;</span><span class="Other">,</span>
    <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L12" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L12" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="newBigUint64Array-procs-all">
  <div id="newBigUint64Array,ArrayBuffer">
  <dt><pre><span class="Keyword">func</span> <a href="#newBigUint64Array%2CArrayBuffer"><span class="Identifier">newBigUint64Array</span></a><span class="Other">(</span><span class="Identifier">buffer</span><span class="Other">:</span> <a href="jsutils.html#ArrayBuffer"><span class="Identifier">ArrayBuffer</span></a><span class="Other">)</span><span class="Other">:</span> <a href="jsutils.html#BigUint64Array"><span class="Identifier">BigUint64Array</span></a> {.
    <span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;new BigUint64Array(#)&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L15" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L15" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="newFloat64Array-procs-all">
  <div id="newFloat64Array,ArrayBuffer">
  <dt><pre><span class="Keyword">func</span> <a href="#newFloat64Array%2CArrayBuffer"><span class="Identifier">newFloat64Array</span></a><span class="Other">(</span><span class="Identifier">buffer</span><span class="Other">:</span> <a href="jsutils.html#ArrayBuffer"><span class="Identifier">ArrayBuffer</span></a><span class="Other">)</span><span class="Other">:</span> <a href="jsutils.html#Float64Array"><span class="Identifier">Float64Array</span></a> {.
    <span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;new Float64Array(#)&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L13" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L13" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="newUint8Array-procs-all">
  <div id="newUint8Array,int">
  <dt><pre><span class="Keyword">func</span> <a href="#newUint8Array%2Cint"><span class="Identifier">newUint8Array</span></a><span class="Other">(</span><span class="Identifier">n</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a><span class="Other">)</span><span class="Other">:</span> <a href="jsutils.html#Uint8Array"><span class="Identifier">Uint8Array</span></a> {.<span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;new Uint8Array(#)&quot;</span><span class="Other">,</span>
    <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L17" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L17" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="newUint32Array-procs-all">
  <div id="newUint32Array,ArrayBuffer">
  <dt><pre><span class="Keyword">func</span> <a href="#newUint32Array%2CArrayBuffer"><span class="Identifier">newUint32Array</span></a><span class="Other">(</span><span class="Identifier">buffer</span><span class="Other">:</span> <a href="jsutils.html#ArrayBuffer"><span class="Identifier">ArrayBuffer</span></a><span class="Other">)</span><span class="Other">:</span> <a href="jsutils.html#Uint32Array"><span class="Identifier">Uint32Array</span></a> {.
    <span class="Identifier">importjs</span><span class="Other">:</span> <span class="StringLit">&quot;new Uint32Array(#)&quot;</span><span class="Other">,</span> <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/private/jsutils.nim#L14" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/private/jsutils.nim#L14" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>

  </dl>
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