createJsonRpcFetcher

createJsonRpcFetcher(url, headers, retries?): JsonRpcClient

Makes a JSON-RPC request to a url

Parameters

• url: string

to JSON RPC backend

• headers: HeadersInit= undefined

to send with the request

• retries?: number= 3

defaults to 3

Returns

JsonRpcClient

the result field from the JSON-RPC response

See

https://ethereum.org/en/developers/docs/apis/json-rpc/

Example

const url = 'https://mainnet.optimism.io'
const params = {
  method: 'eth_getBlockByNumber',
  params: ['latest', false],
}
const {result: block} = await fetchJsonRpc(url, params)

Source

fetchJsonRpc.js:20