44 lines
1.2 KiB
TypeScript
44 lines
1.2 KiB
TypeScript
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import { JsonRpcResponse, RPCRequest } from '../rpc/types';
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import { IWeb3Provider } from './types';
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import RPCClient from '../rpc/client';
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export default class Web3Client extends RPCClient {
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private provider: IWeb3Provider;
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constructor() {
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super('web3'); // initialized with fake endpoint
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this.provider = (window as any).web3.currentProvider;
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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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params: req.params || [] // default to empty array so MetaMask doesn't error
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});
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public call = (request: RPCRequest | any): Promise<JsonRpcResponse> =>
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this.sendAsync(this.decorateRequest(request)) as Promise<JsonRpcResponse>;
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public batch = (requests: RPCRequest[] | any): Promise<JsonRpcResponse[]> =>
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this.sendAsync(requests.map(this.decorateRequest)) as Promise<
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JsonRpcResponse[]
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>;
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private sendAsync = (
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request: any
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): Promise<JsonRpcResponse | JsonRpcResponse[]> => {
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return new Promise((resolve, reject) => {
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this.provider.sendAsync(
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request,
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(error, result: JsonRpcResponse | JsonRpcResponse[]) => {
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if (error) {
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return reject(error);
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}
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resolve(result);
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}
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);
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});
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};
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}
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