web3-utils
Version:
Collection of utility functions used in web3.js.
109 lines (106 loc) • 4.53 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Eip1193Provider = void 0;
/*
This file is part of web3.js.
web3.js is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
web3.js is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with web3.js. If not, see <http://www.gnu.org/licenses/>.
*/
const web3_types_1 = require("web3-types");
const eventemitter3_1 = require("eventemitter3");
const web3_errors_1 = require("web3-errors");
const json_rpc_js_1 = require("./json_rpc.js");
/**
* This is an abstract class, which extends {@link Web3BaseProvider} class. This class is used to implement a provider that adheres to the EIP-1193 standard for Ethereum providers.
*/
class Eip1193Provider extends web3_types_1.Web3BaseProvider {
constructor() {
super(...arguments);
this._eventEmitter = new eventemitter3_1.EventEmitter();
this._chainId = '';
this._accounts = [];
}
_getChainId() {
return __awaiter(this, void 0, void 0, function* () {
var _a;
const data = yield this.request((0, json_rpc_js_1.toPayload)({
method: 'eth_chainId',
params: [],
}));
return (_a = data === null || data === void 0 ? void 0 : data.result) !== null && _a !== void 0 ? _a : '';
});
}
_getAccounts() {
return __awaiter(this, void 0, void 0, function* () {
var _a;
const data = yield this.request((0, json_rpc_js_1.toPayload)({
method: 'eth_accounts',
params: [],
}));
return (_a = data === null || data === void 0 ? void 0 : data.result) !== null && _a !== void 0 ? _a : [];
});
}
_onConnect() {
Promise.all([
this._getChainId()
.then(chainId => {
if (chainId !== this._chainId) {
this._chainId = chainId;
this._eventEmitter.emit('chainChanged', this._chainId);
}
})
.catch(err => {
// todo: add error handler
console.error(err);
}),
this._getAccounts()
.then(accounts => {
if (!(this._accounts.length === accounts.length &&
accounts.every(v => accounts.includes(v)))) {
this._accounts = accounts;
this._onAccountsChanged();
}
})
.catch(err => {
// todo: add error handler
// eslint-disable-next-line no-console
console.error(err);
}),
])
.then(() => this._eventEmitter.emit('connect', {
chainId: this._chainId,
}))
.catch(err => {
// todo: add error handler
// eslint-disable-next-line no-console
console.error(err);
});
}
// todo this must be ProvideRpcError with a message too
_onDisconnect(code, data) {
this._eventEmitter.emit('disconnect', new web3_errors_1.EIP1193ProviderRpcError(code, data));
}
_onAccountsChanged() {
// get chainId and safe to local
this._eventEmitter.emit('accountsChanged', this._accounts);
}
}
exports.Eip1193Provider = Eip1193Provider;
//# sourceMappingURL=web3_eip1193_provider.js.map