Metamask <> Astar snap adapter

Metamask <> Astar snap adapter is used to inject astar snap as web3 provider. It lists snap inside window.injectedWeb3["metamask-astar-snap"] so it can be enabled using @polkadot/extension-dapp package.

For more details on astar snap itself see snap repo or read full astar snap documentation.

Usage

Adapter has only one exposed function for enabling snap as web3 provider.

function enablePolkadotSnap(
  config?: SnapConfig,
  snapOrigin?: string,
  snapInstallationParams?: Record<SnapInstallationParamNames, unknown> = {}
): Promise<MetamaskPolkadotSnap>

By providing config as argument it is possible to override default configurations.

Configuration structure is shown below.

SnapConfig {
  networkName: SnapNetworks;
  wsRpcUrl?: string;
  addressPrefix?: number;
  unit?: UnitConfiguration;
}

SnapNetworks = "astar" | "shiden" | "shibuya";

UnitConfiguration {
  symbol: string;
  decimals: number;
  image?: string;
  customViewUrl?: string;
}