laminar-chain.js

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laminar-chain.js

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SDK to access Laminar Ethereum and Laminar Chain

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# Laminar Chain JS SDK

This library provides SDK to access Laminar Ethereum and Laminar Chain.

# Getting Started

- Install dependencies

```bash
yarn add @polkadot/api @laminar/api@beta
```

- Laminar Chain

- Create API instance for Laminar Chain

```ts
    import { ApiPromise } from '@polkadot/api';
    import { WsProvider } from '@polkadot/rpc-provider';
    import { options } from '@laminar/api';

async function main() {
      const provider = new WsProvider('ws://localhost:9944');
      const api = new ApiPromise(options({ provider }));
      await api.isReady;

// use api
    }

main();
    ```

- Use api to interact with node

```ts
    // query and display account data
    const data = await api.query.system.account('5F98oWfz2r5rcRVnP9VCndg33DAAsky3iuoBSpaPUbgN9AJn');
    console.log(data.toHuman());
    ```

- Laminar Ethereum

- Create API instance for Laminar Ethereum

```ts
    import { EthereumApi } from '@laminar/api';
    import Web3 from 'web3';

const api = new EthereumApi({
      provider: new Web3.providers.HttpProvider(<network_endpoint>)
    })
    ```

- Create API instance from metamask

```ts
    import { EthereumApi } from '@laminar/api';

const api = new EthereumApi({
      provider: window.web3.currentProvider.
    })
    ```

- Call the contract

```ts
    import { EthereumApi } from '@laminar/api';

const api = new EthereumApi({
      provider: window.web3.currentProvider.
    })

const run = async () => {
      // call marginFlowProtocol
      await api.marginFlowProtocol.methods.balances(<poolId>, <account>).call() // balance

// call syntheticFlowProtocol
      api.baseContracts.syntheticFlowProtocol.methods.redeem(<fromToken>, <poolId>, <amount>).send(<sendOption>) // redeem

// call MarginPoolInterfaceContract
      const contract = api.getMarginPoolInterfaceContract(<poolId>)

// call SyntheticPoolInterfaceContract
      const contract = api.getSyntheticPoolInterfaceContract(<poolId>)

await contract.methods.getAskSpread(<tokenId>).call() // getAskSpread

// get margin allowance
      await api.margin.allowance(<account>, <contractAddress>)

// margin contract grant
      await api.margin.grant(<account>, <contractAddress>)

}

run()
    ```

# Packages

- [api](./packages/api)
  - SDK to access Laminar Ethereum and Laminar Chain
- [types](./packages/types)
  - Polkadot.js type definations for Laminar Chain

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