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Top 10 Examples of "web3-provider-engine in functional component" in JavaScript

Dive into secure and efficient coding practices with our curated list of the top 10 examples showcasing 'web3-provider-engine' in functional components in JavaScript. Our advanced machine learning engine meticulously scans each line of code, cross-referencing millions of open source libraries to ensure your implementation is not just functional, but also robust and secure. Elevate your React applications to new heights by mastering the art of handling side effects, API calls, and asynchronous operations with confidence and precision.

ignoreFilesGlobs: ['**/node_modules/**']
	}

	if (ignoreFiles) {
		ignoreFiles = ignoreFiles.split(',')
		ignoreFiles = ignoreFiles.map(file => "**/" + file)
		coverageSubproviderConfig.ignoreFilesGlobs = coverageSubproviderConfig.ignoreFilesGlobs.concat(ignoreFiles)
	}
		
	global.coverageSubprovider = new CoverageSubprovider(
		artifactAdapter,
		defaultFromAddress,
		coverageSubproviderConfig
	);
	provider.addProvider(global.coverageSubprovider);
	provider.addProvider(new RpcProvider({ rpcUrl: `http://localhost:${port}` }));
	global.provider = provider;

	// start pulling blocks
	provider.start();
	return provider
}
init(cb) {
    if (this.initialized) { return cb(); }
    this.initialized = true;
    this.opts.serialized = fs.readFileSync(this.opts.keystore).toString();
    this.opts.ks = Lightwallet.keystore.deserialize(this.opts.serialized);
    // this.opts.addresses = this.opts.ks.getAddresses().map(a => `0x${a}`);
    this.opts.addresses = this.opts.ks.getAddresses().map(a => a); // removed prefix 0x
    // pass opts
    const { pollingInterval } = this.opts;
    this.engine = new ProviderEngine({ pollingInterval });
    this.engine.addProvider(new FilterProvider());
    this.engine.addProvider(new NonceSubprovider());
    this.engine.addProvider(new LighwalletSubprovider(this.opts));
    this.engine.addProvider(new RpcSubprovider(this.opts));
    // this.engine._fetchLatestBlock();
    this.engine.start();
    if (this.opts.prefund) {
      console.log(`Ensuring all lightwallet accounts have ${this.opts.prefund / 1e18} Ether`);
      return prefund(this.opts).then(cb);
    }
    return cb();
  }
  send() {
init(cb) {
    if (this.initialized) { return cb(); }
    this.initialized = true;
    this.opts.serialized = fs.readFileSync(this.opts.keystore).toString();
    this.opts.ks = Lightwallet.keystore.deserialize(this.opts.serialized);
    // this.opts.addresses = this.opts.ks.getAddresses().map(a => `0x${a}`);
    this.opts.addresses = this.opts.ks.getAddresses().map(a => a); // removed prefix 0x
    // pass opts
    const { pollingInterval } = this.opts;
    this.engine = new ProviderEngine({ pollingInterval });
    this.engine.addProvider(new FilterProvider());
    this.engine.addProvider(new NonceSubprovider());
    this.engine.addProvider(new LighwalletSubprovider(this.opts));
    this.engine.addProvider(new RpcSubprovider(this.opts));
    // this.engine._fetchLatestBlock();
    this.engine.start();
    if (this.opts.prefund) {
      console.log(`Ensuring all lightwallet accounts have ${this.opts.prefund / 1e18} Ether`);
      return prefund(this.opts).then(cb);
    }
    return cb();
  }
  send() {
connect ({dispatch, commit, getters, state}) {
    let providerEngine = null
    if (window.web3) {
      providerEngine = window.web3.currentProvider
    } else {
      const ROPSTEN_ENDPOINT = 'https://infura.io'

      providerEngine = new ProviderEngine()
      providerEngine.addProvider(new FilterSubprovider())
      providerEngine.addProvider(new RpcSubprovider({rpcUrl: ROPSTEN_ENDPOINT}))
      providerEngine.start()
    }

    zeroEx = new ZeroEx(providerEngine)
    zeroEx._web3Wrapper.web3.version.getNetwork((error, response) => {
      if (error) console.error(error)
      if (parseInt(response) === 42 && window.location.hostname !== 'kovan.0xchange.me') {
        window.location.href = 'https://kovan.0xchange.me'
      } else if (parseInt(response) === 1 && window.location.hostname === 'kovan.0xchange.me') {
        window.location.href = 'https://0xchange.me'
      }
    })
    // commit('SET_ZERO_EX', zeroEx)
    // 3117574 kovan
    // 4145578 mainnet
provider: () => {
          if (!testProviderStarted) {
            // Within this function to not start the provider until it's needed
            testProvider.addProvider(
              new WebsocketProvider({ rpcUrl: 'http://localhost:7545' })
            );

            testProvider.start(err => {
              testProviderStarted = true;

              if (err !== undefined) {
                // eslint-disable-next-line no-console
                console.log('Failed to start provider', err);
                process.exit(1);
              }
            });
          }

          return testProvider;
        },
        network_id: '*'
isVerbose: true,
          ignoreFilesGlobs: [
            // Proxies
            '**/*Proxy.sol',

            // Test contracts
            '**/test/*.sol',

            // Interfaces
            '**/interfaces/*.sol',
          ],
        })
        coverageProvider.addProvider(global.coverageSubprovider)

        coverageProvider.addProvider(
          new WebsocketSubprovider({
            rpcUrl: `http://localhost:${defaultConfig.port}`,
            debug: false,
          })
        )

        coverageProvider.start((err) => {
          if (err !== undefined) {
            // tslint:disable-next-line: no-console
            console.error(err)
            process.exit(1)
          }
        })
        /**
         * HACK: Truffle providers should have `send` function, while `ProviderEngine` creates providers with `sendAsync`,
         * but it can be easily fixed by assigning `sendAsync` to `send`.
         */
init(cb) {
    if (this.initialized) { return cb(); }
    this.initialized = true;
    this.opts.serialized = fs.readFileSync(this.opts.keystore).toString();
    this.opts.ks = Lightwallet.keystore.deserialize(this.opts.serialized);
    // this.opts.addresses = this.opts.ks.getAddresses().map(a => `0x${a}`);
    this.opts.addresses = this.opts.ks.getAddresses().map(a => a); // removed prefix 0x
    // pass opts
    const { pollingInterval } = this.opts;
    this.engine = new ProviderEngine({ pollingInterval });
    this.engine.addProvider(new FilterProvider());
    this.engine.addProvider(new NonceSubprovider());
    this.engine.addProvider(new LighwalletSubprovider(this.opts));
    this.engine.addProvider(new RpcSubprovider(this.opts));
    // this.engine._fetchLatestBlock();
    this.engine.start();
    if (this.opts.prefund) {
      console.log(`Ensuring all lightwallet accounts have ${this.opts.prefund / 1e18} Ether`);
      return prefund(this.opts).then(cb);
    }
    return cb();
  }
  send() {
connect ({dispatch, commit, getters, state}) {
    let providerEngine = null
    if (window.web3) {
      providerEngine = window.web3.currentProvider
    } else {
      const ROPSTEN_ENDPOINT = 'https://infura.io'

      providerEngine = new ProviderEngine()
      providerEngine.addProvider(new FilterSubprovider())
      providerEngine.addProvider(new RpcSubprovider({rpcUrl: ROPSTEN_ENDPOINT}))
      providerEngine.start()
    }

    zeroEx = new ZeroEx(providerEngine)
    zeroEx._web3Wrapper.web3.version.getNetwork((error, response) => {
      if (error) console.error(error)
      if (parseInt(response) === 42 && window.location.hostname !== 'kovan.0xchange.me') {
        window.location.href = 'https://kovan.0xchange.me'
      } else if (parseInt(response) === 1 && window.location.hostname === 'kovan.0xchange.me') {
        window.location.href = 'https://0xchange.me'
      }
    })
    // commit('SET_ZERO_EX', zeroEx)
    // 3117574 kovan
    // 4145578 mainnet
    // zeroEx.exchange.getLogsAsync('LogFill', {fromBlock: 4219261, toBlock: 'latest'}, {}).then((logs) => {
// BUG: This never finds window.web3, and thus always falls back to localStorage keys
      this.web3 = new Web3(window.web3.currentProvider);
    } else {
      var privateKey = options.privateKey || localStorage.getItem("localPrivateKey");
      if(!privateKey) {
        privateKey = Wallet.generate().getPrivateKeyString().slice(2);
        if(localStorage) {
        localStorage.setItem("localPrivateKey", privateKey)}
      }
      // This uses web3-provider-engine and ethereumjs-wallet to construct a
      // wallet in-browser, without needing Metamask, Toshi, etc.
      //
      // Note that the current version of ethereumjs-wallet on npm has a bug,
      // but the latest on Github works just fine.
      var wallet = Wallet.fromPrivateKey(new Buffer(privateKey, "hex"));
      this.engine = new ProviderEngine();
      this.web3 = new Web3(this.engine);
      console.log(this.web3)
      // static results
      this.engine.addProvider(new FixtureSubprovider({
        web3_clientVersion: 'ProviderEngine/v0.0.0/javascript',
        net_listening: true,
        eth_hashrate: '0x00',
        eth_mining: false,
        eth_syncing: true,
      }))

      // filters
      this.engine.addProvider(new FilterSubprovider())

      // id mgmt
      this.engine.addProvider(new WalletSubprovider(wallet, {}))
} else if (props.connectionType === 'inject') {
      // set up the injected web3 object in the event that it indeed exists
      if (typeof window.web3 !== 'undefined' &&
          typeof window.web3.currentProvider !== 'undefined') {
        // TODO: how can we support a ledger AND the current provider?
        console.log('found existing web3 provider, initializing...')
        this.web3 = new Web3(window.web3.currentProvider)

        // TODO: can we detect if the current provider is websocket-enabled?
        console.log(`attempting to connect event listener to websocket provider at ${infura}...`)
        this.wsWeb3 = new Web3(new Web3.providers.WebsocketProvider(infura))
      }
    } else if (props.connectionType === 'ledger') {
      // connect to the ledger via u2f, then add infura subprovider & websocket
      console.log('attempting to connect to ledger...')
      const engine = new ProviderEngine()
      const getTransport = () => TransportU2F.create(1000, 2000)
      const ledger = createLedgerSubprovider(getTransport, {
        networkId,
        accountsLength: config.ledgerAccountsLength,
        accountsOffset: config.ledgerAccountsOffset
      })
      engine.addProvider(ledger)

      console.log(`attempting to connect to provider at ${infura}...`)
      let infuraWsProvider = new WebsocketSubprovider({ rpcUrl: infura })
      /* these commands don't work, need to monitor websocket connection health

      infuraWsProvider.on('start', e => console.error('WS start:', e))
      infuraWsProvider.on('error', e => console.error('WS error:', e))
      infuraWsProvider.on('end', e => console.error('WS end:', e))

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