browser library

Support for using web3lib with browser clients such as MetaMask.

Example

import 'dart:convert';
import 'dart:html';
import 'dart:typed_data';

import 'package:web3lib/browser.dart';
import 'package:web3lib/web3lib.dart';

Future<void> main() async {
  final eth = window.ethereum;
  if (eth == null) {
    print('MetaMask is not available');
    return;
  }

  final client = Web3Client.custom(eth.asRpcService());
  final credentials = await eth.requestAccount();

  print('Using ${credentials.address}');
  print('Client is listening: ${await client.isListeningForNetwork()}');

  final message = Uint8List.fromList(utf8.encode('Hello from web3lib'));
  final signature = await credentials.signPersonalMessage(message);
  print('Signature: ${base64.encode(signature)}');
}

Classes

Ethereum

Extensions

DartEthereum on Ethereum

This extension provides Dart methods around the raw Ethereum JavaScript object.

GetEthereum on Window

Extension to load obtain the ethereum window property injected by Ethereum browser plugins.