This contract implements simple counter backed by storage on blockchain. Contract in assembly/main.ts provides methods to increment / decrement counter and get it's current value or reset.

Plus and minus buttons increase and decrease value correspondingly. When button L is toggled, counter will add or minus 10 a time. RS button is for reset. LE and RE buttons to let the robot wink to you.

Open in the Gitpod link above or clone the repository.

git clone https://github.com/near-examples/counter

Install dependencies:

yarn

Make sure you have near-cli by running:

near --version

If you need to install near-cli:

npm install near-cli -g

If you do not have a NEAR account, please create one with NEAR Wallet.

In the project root, login with near-cli by following the instructions after this command:

near login

Modify the top of src/config.js, changing the CONTRACT_NAME to be the NEAR account name in the file neardev/dev-account. It starts with dev-.

…
const CONTRACT_NAME = 'neardev/dev-account ACCOUNT ID'; /* TODO: fill this in! */
…

Start the example!

yarn start

yarn asp  # as-pect tests
NODE_ENV=ci yarn jest # jest tests
NODE_ENV=ci yarn test # both

• assembly/main.ts for the contract code
• src/index.html for the front-end HTML
• src/main.js for the JavaScript front-end code and how to integrate contracts
• src/test.js for the JS tests for the contract