i001962 / calm-duluba

Kickstart your blockchain development with DappStarter

My Dapp

This project is for the blockchain application My Dapp. It contains code for the Smart Contract, web-based dapp and NodeJS server.

Pre-requisites

In order to develop and build "My Dapp," the following pre-requisites must be installed:

• Visual Studio Code (or any IDE for editing Javascript)
• NodeJS
• Yarn (DappStarter uses Yarn Workspaces)

Installation

Using a terminal (or command prompt), change to the folder containing the project files and type: yarn This will fetch all required dependencies. The process will take 1-3 minutes and while it is in progress you can move on to the next step.

Yarn Errors

You might see failures related to the node-gyp package when Yarn installs dependencies. These failures occur because the node-gyp package requires certain additional build tools to be installed on your computer. Follow the instructions for adding build tools and then try running yarn again.

Build, Deploy and Test

Using a terminal (or command prompt), change to the folder containing the project files and type: yarn start This will run all the dev scripts in each project package.json.

File Locations

Here are the locations of some important files:

• Contract Code: packages/dapplib/contracts
• Dapp Library: packages/dapplib/src/lib/dapp-lib.js
• Blockchain Interactions: packages/dapplib/src/lib/blockchain.js
• Unit Tests: packages/dapplib/tests
• UI Test Harnesses: packages/client/src/dapp/pages/harness

To view your dapp, open your browser to http://localhost:5000 for the DappStarter Workspace.

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Smart Contract

yarn migrate to compile contracts/*.sol files, deploy them to the blockchain.

Dapp

Run the dapp in a separate terminal. You must have run npm run deploy for the dapp to see most recent smart contract changes.

yarn dapp runs the dapp on http://localhost:5001 using webpack dev server

Server

Run the server in a separate terminal. You must have run npm run deploy for the dapp to see most recent smart contract changes.

yarn server runs NodeJS server app on port 5002 with NestJS

Testing

test-config.js contains settings used by test scripts

Run tests using yarn test --script=[test file]

Production Builds

DappStarter currently does not provide blockchain migration scripts to be used in production. However, here are the scripts for generating production builds:

yarn build:prod generates dapp bundle for production.