How to use the @polkadot/api/index.WsProvider function in @polkadot/api
To help you get started, we’ve selected a few @polkadot/api examples, based on popular ways it is used in public projects.
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polkadot-js / api / packages / types / src / scripts / extractChain.ts View on Github 
async function main (): Promise {
const provider = new WsProvider(ws);
const api = await ApiPromise.create({ provider });
const [chain, props] = await Promise.all([
api.rpc.system.chain(),
api.rpc.system.properties()
]);
// output the chain info, for easy re-use
console.error(`// Generated via 'yarn run chain:info ${ws}'\n\nexport default {\n chain: '${chain.toString()}',\n genesisHash: '${api.genesisHash.toHex()}',\n specVersion: ${api.runtimeVersion.specVersion.toNumber()},\n ss58Format: ${props.ss58Format.unwrapOr(42)},\n tokenDecimals: ${props.tokenDecimals.unwrapOr(0)},\n tokenSymbol: '${props.tokenSymbol.unwrapOr('UNIT')}',\n metaCalls: '${Buffer.from(api.runtimeMetadata.asCallsOnly.toU8a()).toString('base64')}'\n};`);
// show any missing types
api.runtimeMetadata.getUniqTypes(false);
}@polkadot/api
Promise and RxJS wrappers around the Polkadot JS RPC
