polkadot-js-api-ts-template

Beloved template to quickly start hacking in top of any substrate based chain with @polkadot/api.

See package.json to see what's up 🔥🔥.

Install

First install ts-node

npm i ts-node

then install all npm packages

npm install

Optionally, in order to verify that you can connect with our node, run:

npm run dev

Run

To run console in interactive mode, run:

npx ts-node -i

Then, we import api dependencies and connect with our node by running:

import { ApiPromise, WsProvider } from "@polkadot/api";
const provider = new WsProvider("ws://109.235.70.27:9944");
const api = await ApiPromise.create({ provider });

After this, we are able to interact with the API via api variable.

Example api calls:

(await api.query.profile.profileCount()).toJSON()

Returns the number of profiles.

(await api.query.task.tasksOwned('5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY')).toJSON()

Returns the tasks owner by a specified address.

 (await api.query.task.tasks.entries()).toString()

Returns all entries of Tasks