Set up development environment

This section covers everything you need to get started with dapp development. It provided information about installing and configuring your local development environment for developing dapps on Chromia blockchain.

Set up PostgreSQL database

Rell needs PostgreSQL 16.3 for running nodes. Default setup: database 'postchain' with 'postchain' credentials.

Install Chromia CLI

Ensure PostgreSQL 16.3 and Java 21+ are set up. Install the Chromia CLI via package managers (e.g., Homebrew) or download directly. For Docker, use the provided image.

Install VS Code plugin

In VS Code, go to Extensions, search for 'Rell', and click Install.

Install JetBrains IDE plugin

In JetBrains IDE, go to File -> Settings -> Plugins, search for 'Rell' in the Marketplace, and click Install.

Install Postchain clients

Install Postchain clients for JavaScript/TypeScript via npm (npm install postchain-client), Kotlin via Maven/Gradle, or C# via NuGet or DLLs.