Ethereum: Truffle + Meteor

Meteor is the recommended development framework for Ethereum dApps. Truffle is Consensys’ development  system for Ethereum dApps. We cannot currently add a Meteor build phase to Truffle, but we can integrate them easily enough with a script.

Install Meteor, Truffle and testrpc:

curl | sh
sudo npm install -g truffle
sudo npm install -g ethereumjs-testrpc

Then create a file called truffle-meteor-build, in ~/bin or somewhere else easily accessible and paste the following into it:


# By Rob Myers <[email protected]>
# CC0 2016
# To the extent possible under law, the person who associated CC0 with this
# work has waived all copyright and related or neighboring rights to this work.

# We copy the .meteor/ dir from app/ into the specified environment's build/ dir
# then call meteor-build-client in there, building into a meteor/ directory
# next to build/ .

if [ "${1}" = "-h" ] || [ "${1}" = "--help" ]
    echo "Usage: truffle-meteor-build [environment]"
    echo "       Copies the .meteor directory from app into the truffle build,"
    echo "       then calls meteor-build-client."
    echo "ARGS:  [environment] - The truffle environment to use (default developmpment)."
    echo "       Make sure you have npm install -g meteor-build-client"
    echo "       and meteor init in the truffle app/ directory."


if [ ! -f "${base_dir}/truffle.json" ]
    echo "Please call from within the top level of a Truffle project."
    exit 1


if [ ! -d "${environment_dir}" ]
    echo "Cannot find directory for environment ${environment}."
    exit 1

pushd "${base_dir}" > /dev/null
echo "Truffle: building ${environment} in ${truffle_build_dir}"
truffle build "${environment}"
cp -r "${app_dir}/.meteor" "${truffle_build_dir}"
pushd "${truffle_build_dir}" > /dev/null
echo "Meteor: building client in ${meteor_build_dir}"
meteor-build-client "${meteor_build_dir}" -p ''
popd > /dev/null
popd > /dev/null

And make it executable:

chmod +x truffle-meteor build

In one shell window start testrpc:


In another shell window create the Truffle/Meteor project:

mkdir truffle-meteor
truffle init
cd truffle-meteor
cd app
rm -rf *
meteor create .
meteor add ethereum:elements

This will create files called app.html, app.js, and app.css . You can rename them to whatever you like. Open truffle-meteor/truffle.json in a text editor and make sure the filenames match those in app/, that the Javascript file has the requisite post-processing commands to add Truffle and the Contract code and that there are no post-process commands for the HTML files.

The results should look similar to this:

  "build": {
    "is-art.html": {
      "files": [
      "post-process": []
    "is-art.js": {
      "files": [
      "post-process": [
    "app.css": [
    "images/": "images/"
  "deploy": [
  "rpc": {
    "host": "localhost",
    "port": 8545

Edit the contract, HTML, CSS and JavaScript as needed.

Deploy the contract:

truffle deploy

Then build the meteor project:


You can now open the Meteor client in a web browser:

chromium environments/development/meteor/index.html

As you continue to develop the project you can reload the Meteor client in the web browser to see your changes. Make sure you keep testrpc running – if you stop and restart it you’ll need to deploy the contracts again.

Posted in Ethereum, Projects, Uncategorized

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