@polkadot/typegen
Version:
Type generation scripts
45 lines (44 loc) • 2.01 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.main = main;
const tslib_1 = require("tslib");
const node_process_1 = tslib_1.__importDefault(require("node:process"));
const yargs_1 = tslib_1.__importDefault(require("yargs"));
const helpers_1 = require("yargs/helpers");
const api_1 = require("@polkadot/api");
/** @internal */
async function run(ws) {
const provider = new api_1.WsProvider(ws);
const api = await api_1.ApiPromise.create({ provider, throwOnConnect: true });
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).toString()},\n tokenDecimals: ${props.tokenDecimals.unwrapOr(0).toString()},\n tokenSymbol: '${props.tokenSymbol.unwrapOr('UNIT').toString()}',\n metaCalls: '${Buffer.from(api.runtimeMetadata.asCallsOnly.toU8a()).toString('base64')}'\n};`);
// show any missing types
api.runtimeMetadata.getUniqTypes(false);
}
function main() {
// retrieve and parse arguments - we do this globally, since this is a single command
const { ws } = (0, yargs_1.default)((0, helpers_1.hideBin)(node_process_1.default.argv))
.usage('Usage: [options]')
.wrap(120)
.strict()
.options({
ws: {
default: 'ws://127.0.0.1:9944',
description: 'The API endpoint to connect to, e.g. wss://kusama-rpc.polkadot.io',
required: true,
type: 'string'
}
}).argv;
run(ws)
.then(() => {
node_process_1.default.exit(0);
})
.catch((error) => {
console.error('FATAL:', error.message);
node_process_1.default.exit(-1);
});
}