@substrate/connect v0.8.10
@substrate/connect
Using @substrate/connect
for library authors
Provide a well-known chain name ('polkadot', 'ksmcc3', 'westend2', 'rococo_v2_2'):
import { createScClient, WellKnownChain } from '@substrate/connect';
const scClient = createScClient();
const chain = await scClient.addWellKnownChain(
WellKnownChain.westend2,
function jsonRpcCallback(response) {
console.log("response", response);
}
);
chain.sendJsonRpc(
'{"jsonrpc":"2.0","id":"1","method":"system_health","params":[]}'
);
...or provide your custom substrate chain's name and chainspec:
import { createScClient } from '@substrate/connect';
import myJsonChainSpec from './mySubstrateChainSpec.json';
const myChainSpec = JSON.stringify(myJsonChainSpec);
const scClient = createScClient();
const chain = await scClient.addChain(
myChainSpec,
function jsonRpcCallback(response) {
console.log("response", response);
}
);
chain.sendJsonRpc(
'{"jsonrpc":"2.0","id":"1","method":"system_health","params":[]}'
);
In order to connect to a parachain, you must first instantiate the relay chain this parachain is connected to, then instantiate the parachain on the same relay chain. The following example connects to a parachain of the Westend test network:
import { createScClient, WellKnownChain } from '@substrate/connect';
import jsonParachainSpec from './myParaChainSpec.json';
const parachainSpec = JSON.stringify(jsonParachainSpec);
const scClient = createScClient();
const relayChain = await scClient.addWellKnownChain(WellKnownChain.westend2)
const parachain = await relayChain.addChain(
parachainSpec,
function jsonRpcCallback(response) {
console.log("response", response);
}
);
parachain.sendJsonRpc(
'{"jsonrpc":"2.0","id":"1","method":"system_health","params":[]}'
);
Scripts
pnpm test
to run the unit testspnpm build
to build @substrate-connectpnpm lint
to run linter for @substrate-connect
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