52 lines
1.4 KiB
TypeScript
52 lines
1.4 KiB
TypeScript
import { randomBytes } from 'crypto';
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import { JsonRpcResponse, RPCRequest } from './types';
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export default class RPCClient {
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public endpoint: string;
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public headers: { [key: string]: string };
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constructor(endpoint: string, headers: { [key: string]: string } = {}) {
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this.endpoint = endpoint;
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this.headers = headers;
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}
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public id(): string | number {
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return randomBytes(16).toString('hex');
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}
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public decorateRequest = (req: RPCRequest) => ({
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...req,
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id: this.id(),
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jsonrpc: '2.0'
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});
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public call = (request: RPCRequest | any): Promise<JsonRpcResponse> => {
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return fetch(this.endpoint, {
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method: 'POST',
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headers: this.createHeaders({
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'Content-Type': 'application/json',
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...this.headers
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}),
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body: JSON.stringify(this.decorateRequest(request))
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}).then(r => r.json());
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};
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public batch = (requests: RPCRequest[] | any): Promise<JsonRpcResponse[]> => {
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return fetch(this.endpoint, {
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method: 'POST',
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headers: this.createHeaders({
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'Content-Type': 'application/json',
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...this.headers
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}),
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body: JSON.stringify(requests.map(this.decorateRequest))
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}).then(r => r.json());
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};
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private createHeaders = (headerObject: HeadersInit) => {
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const headers = new Headers();
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Object.entries(headerObject).forEach(([name, value]) => {
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headers.append(name, value);
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});
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return headers;
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};
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}
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