Intermediate: Develop an application locally using near-shell

If you have an app with an existing front-end that you want to hook into the smart contract on the back end, you will need to import our JavaScript SDK on the front-end and write/deploy the smart contract on the back end. The best way to get aquatinted with this process is to use the near CLI tool to generate a new project to see how the frontend and backend integration works.

Requirements

  • npm Get it here

  • near-shell The NEAR cli tool.

    • Install with`npm i -g near-shell

    • Check out the commands here

  • Whatever frontend build tools you prefer.

    • By default, gulp is used for compiling. Check it out here. (You shouldn't need to do any config for gulp specifically).

1. Create a new project

near new_project --project_dir ~/[wherever you want your project]

2. Write the smart contract

Write the code!

All contract code is found in the assembly/ folder. (named for webassembly conventions)

assembly/main.ts is where all smart contract code can be found.

src/test.js is where unit tests for the smart contract can be found.

src/main.js is the default frontend code, but that can be changed to whatever frontend you prefer!

3. Deploy to our hosted DevNet

Deploy your contract to the same DevNet which the NEAR Studio IDE deploys to.

Navigate to your source directory in command line, and do the following

  1. Create an account for your contract

near create_account --node_url https://studio.nearprotocol.com/devnet --account_id <yourcontractname>
  1. Build your contract

npm run build
  1. Deploy your contract to DevNet

near deploy --node_url https://studio.nearprotocol.com/devnet --contract_name <yourcontractname>

For help using cli tools, you can use near

4. Test the smart contract

Within the application's directory run

npm test-to-devnet

That's it! The tests will run against the instance that you've deployed to DevNet!

The tests in tests.js will run against the deployed contract.