30 lines
898 B
JavaScript
30 lines
898 B
JavaScript
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// @flow
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import RPCClient from '../rpc/client';
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import type { EtherscanRequest } from './types';
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import type { JsonRpcResponse } from '../rpc/types';
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export default class EtherscanClient extends RPCClient {
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encodeRequest(request: EtherscanRequest): string {
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const encoded = new URLSearchParams();
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Object.keys(request).forEach(key => {
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encoded.set(key, request[key]);
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});
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return encoded.toString();
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}
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async call(request: EtherscanRequest): Promise<JsonRpcResponse> {
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return fetch(this.endpoint, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
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},
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body: this.encodeRequest(request)
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}).then(r => r.json());
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}
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async batch(requests: EtherscanRequest[]): Promise<JsonRpcResponse[]> {
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const promises = requests.map(req => this.call(req));
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return Promise.all(promises);
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}
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}
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