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SvelteJS Truffle Box

A Truffle box using SvelteJS and Rollup.

This box contains everything you need to start building a smart-contract app.

Project Goal

To provide the simplest, cleanest seed for building an Ethereum dapp using Truffle, with the minimum possible dependencies, meaning that beginners and pros a like have the most transparent possible method for developing Ethereum contracts.

Truffle Box

A truffle box is a seed project for building a truffle dapp.

Why Svelte?

Svelte was chosen as it is a rich, state-model based, ES6, component framework with very few dependencies, which is nothing more than html, javascript, and css. Once compiled via svelte, there are no clientside dependencies at all - simply vanilla JS.

Svelte is basically a simple DSL (domain specific language) for building a reactive, stateful, dependency-free web-application in pure javascript.

Additionally, the Svelte API is so simple and well-designed, you can learn the whole thing from scratch in less than an hour!

Why Rollup?

Originally this project used ParcelJS but sadly Parcel's support for Svelte is currently broken, and has been for a while. I've switched to RollupJS in order to upgrade to Svelte 3.

Currently, we load web3 from UNPKG, since it appears to be borderline impossible to bundle successfully. If anybody wants to open a PR to bundle Web3, it would be greatly appreciated.

Setting up

  1. Install truffle and an ethereum client. For local development, try Ethereum TestRPC.

    npm install -g truffle // Version 3.0.5+ required.
    npm install -g ganache-cli // Or the ganache GUI will work too.
  2. Download box.

    truffle unbox antony/svelte-box
  3. Run an Ethereum RPC. For simplicity and development we will be using Ethereum TestRPC.

  4. Compile and migrate the contracts after authenticating your account on the blockchain (i.e. restoring from seed in MetaMask).

    truffle compile
    truffle migrate

You're ready to go!


Components are in src/components/*.html. Everything else is in the usual place according to the docs

Run the testrpc so that you have a blockchain to work with, and deploy your contracts:

truffle deploy

Log in to metamask by importing the HD Wallet that testrpc gave you, and do the same for one of the accounts by entering its private key. Then, run the dev task to have the code updated in realtime as you develop:

truffle compile
npm run dev


To produce your production dApp, run the build task:

npm run build

This will publish your completed dApp to the folder ./dist


Testing works much the same way as it does in any web-application, with an additional truffle test command for testing smart contracts.

Be sure you've compiled your contracts before running the tests, or you'll get file not found errors.

npm run test:unit // for dApp tests
npm run test:contract // for contract tests


To build the application for production, use the build command. A production build will be in the ./dist folder.

npm run build


  • Why is there both a truffle.js file and a truffle-config.js file?

    Truffle requires the truffle.js file be named truffle-config on Windows machines. Feel free to delete the file that doesn't correspond to your platform.