@metamask/template-snap-monorepo

This repository demonstrates how to develop a snap with TypeScript. For detailed instructions, see the MetaMask documentation.

MetaMask Snaps is a system that allows anyone to safely expand the capabilities of MetaMask. A snap is a program that we run in an isolated environment that can customize the wallet experience.

Snaps is pre-release software

To interact with (your) Snaps, you will need to install MetaMask Flask, a canary distribution for developers that provides access to upcoming features.

Getting Started

Clone the template-snap repository using this template and set up the development environment:

yarn install && yarn start

Cloning

This repository contains GitHub Actions that you may find useful, see .github/workflows and Releasing & Publishing below for more information.

If you clone or create this repository outside the MetaMask GitHub organization, you probably want to run ./scripts/cleanup.sh to remove some files that will not work properly outside the MetaMask GitHub organization.

If you don't wish to use any of the existing GitHub actions in this repository, simply delete the .github/workflows directory.

Contributing

Testing and Linting

Run yarn test to run the tests once.

Run yarn lint to run the linter, or run yarn lint:fix to run the linter and fix any automatically fixable issues.

Using NPM packages with scripts

Scripts are disabled by default for security reasons. If you need to use NPM packages with scripts, you can run yarn allow-scripts auto, and enable the script in the lavamoat.allowScripts section of package.json.

See the documentation for @lavamoat/allow-scripts for more information.