Swap via Smart Router

Step 1: Install Editor/IDE: Visual Studio Code (VS Code)

• Official download: https://code.visualstudio.com

• After downloading, simply extract and install

Step 2: Install Node: Use nvm to Install and Switch Node.js

• Install NVM

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash

• Load NVM:

source ~/.zshrc     # If you use zsh
# Or:
source ~/.bash_profile

• Install the latest version of Node.js:

nvm install 22

• Switch to the newly installed version:

nvm use 22

• Set the new version as default:

nvm alias default 22

• Verify versions:

node -v
npm -v

Step 3: Clone Project Code Locally

• GitHub address: https://github.com/sun-protocol/SmartExchangeRouter

Step 4: Install All Required Components

• Open the project file with VS Code

• Enter the following in the bottom command line for automatic installation

npm install

Step 5: Configure Private Key

export PRIVATE_KEY_NILE=Your private key

• After configuration, enter env to check if the configuration is successful

Step 6: Obtain Optimal Exchange Path Based on Smart Routing Calculation Service Interface

• After obtaining the optimal 3 exchange paths, you can build transactions based on the optimal path

• For more details, refer to Smart Routing Calculation Service

Step 7: Build Transaction

• Users can call the swapExactInput method of the smart contract to trigger transactions. The Smart Router will process the transaction data internally and complete the transaction.

• For more details, refer to Smart Routing Swap Functions

Step 8: Complete Code

• For complete code, please refer to the request.mjs file in the project. You can replace the function parameters at the bottom according to your needs.

• You can also refer to Smart Routing Swap Functions ---> Complete Code

Step 9: Execute Transaction

node scripts/request.mjs

• After the transaction is successfully executed, it returns the transaction hash. You can further view the detailed information of the transaction on tronscan using the hash.