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class="breadcrumbs__link">dApp Libraries</span><meta itemprop="position" content="2"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Jackal.nodejs</span><meta itemprop="position" content="3"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>Jackal.nodejs</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="quickstart">Quickstart<a href="#quickstart" class="hash-link" aria-label="Direct link to Quickstart" title="Direct link to Quickstart"></a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="demo">Demo<a href="#demo" class="hash-link" aria-label="Direct link to Demo" title="Direct link to Demo"></a></h3><p>A working demo repo can be found <a href="https://github.com/JackalLabs/pup-demo" target="_blank" rel="noopener noreferrer">on GitHub</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="pre-requesites">Pre-requesites<a href="#pre-requesites" class="hash-link" aria-label="Direct link to Pre-requesites" title="Direct link to Pre-requesites"></a></h3><ul><li>Nodejs v20+</li><li><a href="https://www.npmjs.com/package/@jackallabs/jackal.nodejs" target="_blank" rel="noopener noreferrer">Jackal.nodejs</a></li><li>Wallet Mnemonic</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="setting-up">Setting Up<a href="#setting-up" class="hash-link" aria-label="Direct link to Setting Up" title="Direct link to Setting Up"></a></h3><p>Install dependencies:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">npm</span><span class="token plain"> </span><span class="token function" style="color:#d73a49">install</span><span class="token plain"> @jackallabs/jackal.nodejs</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token function" style="color:#d73a49">npm</span><span class="token plain"> </span><span class="token function" style="color:#d73a49">install</span><span class="token plain"> -D @types/node typescript tscpaths</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Jackal.js requires Node v20+. The easiest way to manage this is
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with <a href="https://github.com/nvm-sh/nvm#installing-and-updating" target="_blank" rel="noopener noreferrer">NVM</a>.</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">nvm use </span><span class="token number" style="color:#36acaa">20</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h4 class="anchor anchorWithStickyNavbar_LWe7" id="wallet-instantiation">Wallet Instantiation<a href="#wallet-instantiation" class="hash-link" aria-label="Direct link to Wallet Instantiation" title="Direct link to Wallet Instantiation"></a></h4><p>Jackal.nodejs does not use a traditional wallet like Jackal.js. Instead, <code>MnemonicWallet.create(mnemonic)</code> is used for
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wallet instantiation.</p><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> appConfig </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">signerChain</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'lupulella-2'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">queryAddr</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'https://testnet-grpc.jackalprotocol.com'</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">txAddr</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'https://testnet-rpc.jackalprotocol.com'</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> m </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> </span><span class="token maybe-class-name">MnemonicWallet</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">create</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">mnemonic</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// Hooking up the wallet to your app</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> w </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> </span><span class="token maybe-class-name">WalletHandler</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">trackWallet</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">appConfig</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> m</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Additionally, a query-only mode for the wallet can get accessed via the following:</p><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> wallet </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> </span><span class="token maybe-class-name">WalletHandler</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">trackQueryWallet</span><span class="token punctuation" style="color:#393A34">(</span><span class="token string" style="color:#e3116c">'https://testnet-grpc.jackalprotocol.com'</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token comment" style="color:#999988;font-style:italic">// Use the gRPC-web address of your choice</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="buying-storage-space">Buying Storage Space<a href="#buying-storage-space" class="hash-link" aria-label="Direct link to Buying Storage Space" title="Direct link to Buying Storage Space"></a></h3><p>Every account that wishes to use the Jackal Protocol to store data needs to have a paid storage account.
|
||
This means giving the protocol $8 USD per month per tb. We can do this with Jackal.js!</p><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> storage </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> </span><span class="token maybe-class-name">StorageHandler</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">trackStorage</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">wallet</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// (Wallet address)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// duration in months (min 1)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// space in terabytes (min .001)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// 2 TB for 1 year:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> storage</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">buyStorage</span><span class="token punctuation" style="color:#393A34">(</span><span class="token constant" style="color:#36acaa">WALLET_ADDRESS</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">12</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">2</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="creating-a-root-folder">Creating a Root Folder<a href="#creating-a-root-folder" class="hash-link" aria-label="Direct link to Creating a Root Folder" title="Direct link to Creating a Root Folder"></a></h3><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> minimumProviderVersion </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">'1.0.9'</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> fileIo </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> </span><span class="token maybe-class-name">FileIo</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">trackIo</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">wallet</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> minimumProviderVersion</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> listOfRootFolders </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token string" style="color:#e3116c">"Home"</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token spread operator" style="color:#393A34">...</span><span class="token punctuation" style="color:#393A34">]</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// you can create as many root folders as you would like this way. Home is the Jackal Dashboard default root directory.</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// The first time a user connects, they must init the system</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> storage </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> </span><span class="token maybe-class-name">StorageHandler</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">trackStorage</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">wallet</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> msg </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> storage</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">makeStorageInitMsg</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> fileIo</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">generateInitialDirs</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">msg</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> listOfRootFolders</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// after the first time, this code can be used instead. this will only create new root folders if they don't already exist</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> newFolderCount </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> fileIo</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">verifyFoldersExist</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">listOfRootFolders</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="creating-a-child-folder">Creating a Child Folder<a href="#creating-a-child-folder" class="hash-link" aria-label="Direct link to Creating a Child Folder" title="Direct link to Creating a Child Folder"></a></h3><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> fileIo </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> </span><span class="token maybe-class-name">FileIo</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">trackIo</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">wallet</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> parentFolderPath </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token constant" style="color:#36acaa">PARENT_FOLDER_NAME_AND_PATH</span><span class="token plain"> </span><span class="token comment" style="color:#999988;font-style:italic">// for example Dashboard's root folder path is s/Home</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> parent </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> fileIo</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">downloadFolder</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">parentFolderPath</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> listOfChildFolders </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token string" style="color:#e3116c">"Movies"</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"Pictures"</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token spread operator" style="color:#393A34">...</span><span class="token punctuation" style="color:#393A34">]</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> fileIo</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">createFolders</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">parent</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> listOfChildFolders</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="uploading-a-file">Uploading a File<a href="#uploading-a-file" class="hash-link" aria-label="Direct link to Uploading a File" title="Direct link to Uploading a File"></a></h3><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> fileIo </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> </span><span class="token maybe-class-name">FileIo</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">trackIo</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">wallet</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> parentFolderPath </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token constant" style="color:#36acaa">PARENT_FOLDER_NAME_AND_PATH</span><span class="token plain"> </span><span class="token comment" style="color:#999988;font-style:italic">// for example Dashboard's root folder path is s/Home</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> parent </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> fileIo</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">downloadFolder</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">parentFolderPath</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> file </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token constant" style="color:#36acaa">FILE_OBJECT</span><span class="token plain"> </span><span class="token comment" style="color:#999988;font-style:italic">// this MUST be an instance of File() that is in the browser memory</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> fileName </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> file</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">name</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> handler </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> </span><span class="token maybe-class-name">FileUploadHandler</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">trackFile</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">file</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> parentFolderPath</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> uploadList </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">uploadList</span><span class="token punctuation" style="color:#393A34">[</span><span class="token plain">fileName</span><span class="token punctuation" style="color:#393A34">]</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">data</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token keyword null nil" style="color:#00009f">null</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">exists</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token boolean" style="color:#36acaa">false</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">handler</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> handler</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">key</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> fileName</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">uploadable</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> handler</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">getForUpload</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> fileIo</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">staggeredUploadFiles</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">uploadList</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> parent</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token literal-property property" style="color:#36acaa">counter</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">0</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">complete</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">0</span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="downloading-a-file">Downloading a File<a href="#downloading-a-file" class="hash-link" aria-label="Direct link to Downloading a File" title="Direct link to Downloading a File"></a></h3><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> fileIo </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> </span><span class="token maybe-class-name">FileIo</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">trackIo</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">wallet</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">/* optional */</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> parentFolderPath </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token constant" style="color:#36acaa">PARENT_FOLDER_NAME_AND_PATH</span><span class="token plain"> </span><span class="token comment" style="color:#999988;font-style:italic">// for example Dashboard's root folder path is s/Home</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> parent </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> fileIo</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">downloadFolder</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">parentFolderPath</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> childrenFiles </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> parent</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">getChildFiles</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> pathOfFirstChild </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> parent</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">getMyChildPath</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">childrenFiles</span><span class="token punctuation" style="color:#393A34">[</span><span class="token number" style="color:#36acaa">0</span><span class="token punctuation" style="color:#393A34">]</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">name</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">/* end optional */</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> downloadDetails </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">rawPath</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token constant" style="color:#36acaa">FILE_PATH</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token comment" style="color:#999988;font-style:italic">// manual complete file path OR pathOfFirstChild</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">owner</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token constant" style="color:#36acaa">OWNER_ADDRESS</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token comment" style="color:#999988;font-style:italic">// JKL address of file owner</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">isFolder</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token boolean" style="color:#36acaa">false</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> fileHanlder </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token keyword control-flow" style="color:#00009f">await</span><span class="token plain"> fileIo</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">downloadFile</span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain">downloadDetails</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> </span><span class="token literal-property property" style="color:#36acaa">track</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">0</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> file </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> fileHanlder</span><span class="token punctuation" style="color:#393A34">.</span><span class="token method function property-access" style="color:#d73a49">receiveBacon</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token comment" style="color:#999988;font-style:italic">// do what you want with the File object returned by receiveBacon</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/JackalLabs/canine-docs/blob/master/docs/developers/dAppLibraries/4_jackal_nodejs.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" 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table-of-contents__left-border"><li><a href="#quickstart" class="table-of-contents__link toc-highlight">Quickstart</a><ul><li><a href="#demo" class="table-of-contents__link toc-highlight">Demo</a></li><li><a href="#pre-requesites" class="table-of-contents__link toc-highlight">Pre-requesites</a></li><li><a href="#setting-up" class="table-of-contents__link toc-highlight">Setting Up</a></li><li><a href="#buying-storage-space" class="table-of-contents__link toc-highlight">Buying Storage Space</a></li><li><a href="#creating-a-root-folder" class="table-of-contents__link toc-highlight">Creating a Root Folder</a></li><li><a href="#creating-a-child-folder" class="table-of-contents__link toc-highlight">Creating a Child Folder</a></li><li><a href="#uploading-a-file" class="table-of-contents__link toc-highlight">Uploading a File</a></li><li><a href="#downloading-a-file" class="table-of-contents__link toc-highlight">Downloading a 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