82 lines
2.2 KiB
TypeScript
82 lines
2.2 KiB
TypeScript
'use strict';
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import { Network } from './networks';
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import { JsonRpcProvider } from './json-rpc-provider';
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import * as errors from '../utils/errors';
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/*
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@TODO
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utils.defineProperty(Web3Signer, 'onchange', {
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});
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*/
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export type Callback = (error: any, response: any) => void;
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export type AsyncProvider = {
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isMetaMask: boolean;
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host?: string;
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path?: string;
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sendAsync: (request: any, callback: Callback) => void
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}
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export class Web3Provider extends JsonRpcProvider {
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readonly _web3Provider: AsyncProvider;
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constructor(web3Provider: AsyncProvider, network?: Network | string) {
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if (!web3Provider || !web3Provider.sendAsync) {
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errors.throwError(
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'invalid web3Provider',
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errors.INVALID_ARGUMENT,
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{ arg: 'web3Provider', value: web3Provider }
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);
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}
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// HTTP has a host; IPC has a path.
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var url = web3Provider.host || web3Provider.path || 'unknown';
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super(url, network);
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errors.checkNew(this, Web3Provider);
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this._web3Provider = web3Provider;
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}
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send(method, params) {
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// Metamask complains about eth_sign (and on some versions hangs)
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if (method == 'eth_sign' && this._web3Provider.isMetaMask) {
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// https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_sign
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method = 'personal_sign';
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params = [ params[1], params[0] ];
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}
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return new Promise((resolve, reject) => {
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var request = {
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method: method,
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params: params,
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id: 42,
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jsonrpc: "2.0"
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};
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this._web3Provider.sendAsync(request, function(error, result) {
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if (error) {
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reject(error);
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return;
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}
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if (result.error) {
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// @TODO: not any
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var error: any = new Error(result.error.message);
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error.code = result.error.code;
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error.data = result.error.data;
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reject(error);
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return;
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}
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resolve(result.result);
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});
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});
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}
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}
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