97 lines
2.7 KiB
TypeScript
97 lines
2.7 KiB
TypeScript
'use strict';
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import { JsonRpcProvider } from './json-rpc-provider';
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import { defineReadOnly } from '../utils/properties';
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// Imported Types
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import { Networkish } from '../utils/networks';
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import * as errors from '../errors';
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// Exported Types
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export type AsyncSendable = {
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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: (error: any, response: any) => void) => void
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send?: (request: any, callback: (error: any, response: any) => void) => void
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}
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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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let _nextId = 42;
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export class Web3Provider extends JsonRpcProvider {
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readonly _web3Provider: AsyncSendable;
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private _sendAsync: (request: any, callback: (error: any, response: any) => void) => void;
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constructor(web3Provider: AsyncSendable, network?: Networkish) {
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// HTTP has a host; IPC has a path.
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super(web3Provider.host || web3Provider.path || '', network);
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errors.checkNew(this, Web3Provider);
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if (web3Provider) {
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if (web3Provider.sendAsync) {
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this._sendAsync = web3Provider.sendAsync.bind(web3Provider);
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} else if (web3Provider.send) {
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this._sendAsync = web3Provider.send.bind(web3Provider);
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}
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}
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if (!web3Provider || !this._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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defineReadOnly(this, '_web3Provider', web3Provider);
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}
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send(method: string, params: any): Promise<any> {
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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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let request = {
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method: method,
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params: params,
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id: (_nextId++),
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jsonrpc: "2.0"
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};
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this._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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let 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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