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    <title>TokenRatesController - Documentation</title>

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    <h1 class="page-title">TokenRatesController</h1>
    

    




<section>

<header>
    
        <h2>
        TokenRatesController
        </h2>
        
            <div class="class-description"><p>A controller that polls for token exchange
rates based on a user's current token list</p></div>
        
    
</header>

<article>
    <div class="container-overview">
    
        

    
    <h2>Constructor</h2>
    

    <h4 class="name" id="TokenRatesController"><span class="type-signature"></span>new TokenRatesController<span class="signature">(config<span class="signature-attributes">opt</span>)</span><span class="type-signature"></span></h4>

    




<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="controllers_token-rates.js.html">controllers/token-rates.js</a>, <a href="controllers_token-rates.js.html#line10">line 10</a>
    </li></ul></dd>
    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    
</dl>





<div class="description">
    <p>Creates a TokenRatesController</p>
</div>











    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        
        <th>Attributes</th>
        

        

        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>config</code></td>
            

            <td class="type">
            
                
<span class="param-type">Object</span>


            
            </td>

            
                <td class="attributes">
                
                    &lt;optional><br>
                

                

                
                </td>
            

            

            <td class="description last"><p>Options to configure controller</p></td>
        </tr>

    
    </tbody>
</table>
















    
    </div>

    

    

    

     

    

    
        <h3 class="subsection-title">Members</h3>

        
            
<h4 class="name" id="interval"><span class="type-signature"></span>interval<span class="type-signature"> :Number</span></h4>





<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="controllers_token-rates.js.html">controllers/token-rates.js</a>, <a href="controllers_token-rates.js.html#line51">line 51</a>
    </li></ul></dd>
    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    
</dl>







    <h5>Type:</h5>
    <ul>
        <li>
            
<span class="param-type">Number</span>


        </li>
    </ul>






        
            
<h4 class="name" id="preferences"><span class="type-signature"></span>preferences<span class="type-signature"> :Object</span></h4>





<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="controllers_token-rates.js.html">controllers/token-rates.js</a>, <a href="controllers_token-rates.js.html#line60">line 60</a>
    </li></ul></dd>
    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    
</dl>







    <h5>Type:</h5>
    <ul>
        <li>
            
<span class="param-type">Object</span>


        </li>
    </ul>






        
            
<h4 class="name" id="tokens"><span class="type-signature"></span>tokens<span class="type-signature"> :Array</span></h4>





<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="controllers_token-rates.js.html">controllers/token-rates.js</a>, <a href="controllers_token-rates.js.html#line71">line 71</a>
    </li></ul></dd>
    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    
</dl>







    <h5>Type:</h5>
    <ul>
        <li>
            
<span class="param-type">Array</span>


        </li>
    </ul>






        
    

    
        <h3 class="subsection-title">Methods</h3>

        
            

    

    <h4 class="name" id="fetchExchangeRate"><span class="type-signature">(async) </span>fetchExchangeRate<span class="signature">(address)</span><span class="type-signature"></span></h4>

    




<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="controllers_token-rates.js.html">controllers/token-rates.js</a>, <a href="controllers_token-rates.js.html#line40">line 40</a>
    </li></ul></dd>
    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    
</dl>





<div class="description">
    <p>Fetches a token exchange rate by address</p>
</div>











    <h5>Parameters:</h5>
    

<table class="params">
    <thead>
    <tr>
        
        <th>Name</th>
        

        <th>Type</th>

        

        

        <th class="last">Description</th>
    </tr>
    </thead>

    <tbody>
    

        <tr>
            
                <td class="name"><code>address</code></td>
            

            <td class="type">
            
                
<span class="param-type">String</span>


            
            </td>

            

            

            <td class="description last"><p>Token contract address</p></td>
        </tr>

    
    </tbody>
</table>
















        
            

    

    <h4 class="name" id="updateExchangeRates"><span class="type-signature">(async) </span>updateExchangeRates<span class="signature">()</span><span class="type-signature"></span></h4>

    




<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="controllers_token-rates.js.html">controllers/token-rates.js</a>, <a href="controllers_token-rates.js.html#line25">line 25</a>
    </li></ul></dd>
    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    
</dl>





<div class="description">
    <p>Updates exchange rates for all tokens</p>
</div>

























        
    

    

    
</article>

</section>




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