viem
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JavaScript
import { parseAccount, } from '../accounts/utils/parseAccount.js';
import { uid } from '../utils/uid.js';
export function createClient(parameters) {
const { batch, chain, ccipRead, key = 'base', name = 'Base Client', type = 'base', } = parameters;
const experimental_blockTag = parameters.experimental_blockTag ??
(typeof chain?.experimental_preconfirmationTime === 'number'
? 'pending'
: undefined);
const blockTime = chain?.blockTime ?? 12_000;
const defaultPollingInterval = Math.min(Math.max(Math.floor(blockTime / 2), 500), 4_000);
const pollingInterval = parameters.pollingInterval ?? defaultPollingInterval;
const cacheTime = parameters.cacheTime ?? pollingInterval;
const account = parameters.account
? parseAccount(parameters.account)
: undefined;
const { config, request, value } = parameters.transport({
account,
chain,
pollingInterval,
});
const transport = { ...config, ...value };
const client = {
account,
batch,
cacheTime,
ccipRead,
chain,
key,
name,
pollingInterval,
request,
transport,
type,
uid: uid(),
...(experimental_blockTag ? { experimental_blockTag } : {}),
};
function extend(base) {
return (extendFn) => {
const extended = extendFn(base);
for (const key in client)
delete extended[key];
const combined = { ...base, ...extended };
return Object.assign(combined, { extend: extend(combined) });
};
}
return Object.assign(client, { extend: extend(client) });
}
/**
* Defines a typed JSON-RPC schema for the client.
* Note: This is a runtime noop function.
*/
export function rpcSchema() {
return null;
}
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