本文整理汇总了TypeScript中ts/web3_wrapper.Web3Wrapper.getProviderObj方法的典型用法代码示例。如果您正苦于以下问题：TypeScript Web3Wrapper.getProviderObj方法的具体用法？TypeScript Web3Wrapper.getProviderObj怎么用？TypeScript Web3Wrapper.getProviderObj使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ts/web3_wrapper.Web3Wrapper的用法示例。
在下文中一共展示了Web3Wrapper.getProviderObj方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: providerTypeUpdatedFireAndForgetAsync
public async providerTypeUpdatedFireAndForgetAsync(providerType: ProviderType) {
utils.assert(!_.isUndefined(this.zeroEx), 'ZeroEx must be instantiated.');
// Should actually be Web3.Provider|ProviderEngine union type but it causes issues
// later on in the logic.
let provider;
switch (providerType) {
case ProviderType.LEDGER: {
const isU2FSupported = await utils.isU2FSupportedAsync();
if (!isU2FSupported) {
throw new Error('Cannot update providerType to LEDGER without U2F support');
}
// Cache injected provider so that we can switch the user back to it easily
this.cachedProvider = this.web3Wrapper.getProviderObj();
this.dispatcher.updateUserAddress(''); // Clear old userAddress
provider = new ProviderEngine();
this.ledgerSubProvider = ledgerWalletSubproviderFactory(this.getBlockchainNetworkId.bind(this));
provider.addProvider(this.ledgerSubProvider);
provider.addProvider(new FilterSubprovider());
const networkId = configs.isMainnetEnabled ?
constants.MAINNET_NETWORK_ID :
constants.TESTNET_NETWORK_ID;
provider.addProvider(new RedundantRPCSubprovider(
constants.PUBLIC_NODE_URLS_BY_NETWORK_ID[networkId],
));
provider.start();
this.web3Wrapper.destroy();
const shouldPollUserAddress = false;
this.web3Wrapper = new Web3Wrapper(this.dispatcher, provider, this.networkId, shouldPollUserAddress);
await this.zeroEx.setProviderAsync(provider);
await this.postInstantiationOrUpdatingProviderZeroExAsync();
break;
}
case ProviderType.INJECTED: {
if (_.isUndefined(this.cachedProvider)) {
return; // Going from injected to injected, so we noop
}
provider = this.cachedProvider;
const shouldPollUserAddress = true;
this.web3Wrapper = new Web3Wrapper(this.dispatcher, provider, this.networkId, shouldPollUserAddress);
await this.zeroEx.setProviderAsync(provider);
await this.postInstantiationOrUpdatingProviderZeroExAsync();
delete this.ledgerSubProvider;
delete this.cachedProvider;
break;
}
default:
throw utils.spawnSwitchErr('providerType', providerType);
}
await this.fetchTokenInformationAsync();
}示例2: instantiateContractIfExistsAsync
private async instantiateContractIfExistsAsync(artifact: any, address?: string): Promise<ContractInstance> {
const c = await contract(artifact);
const providerObj = this.web3Wrapper.getProviderObj();
c.setProvider(providerObj);
const artifactNetworkConfigs = artifact.networks[this.networkId];
let contractAddress;
if (!_.isUndefined(address)) {
contractAddress = address;
} else if (!_.isUndefined(artifactNetworkConfigs)) {
contractAddress = artifactNetworkConfigs.address;
}
if (!_.isUndefined(contractAddress)) {
const doesContractExist = await this.doesContractExistAtAddressAsync(contractAddress);
if (!doesContractExist) {
utils.consoleLog(`Contract does not exist: ${artifact.contract_name} at ${contractAddress}`);
throw new Error(BlockchainCallErrs.CONTRACT_DOES_NOT_EXIST);
}
}
try {
let contractInstance;
if (_.isUndefined(address)) {
contractInstance = await c.deployed();
} else {
contractInstance = await c.at(address);
}
return contractInstance;
} catch (err) {
const errMsg = `${err}`;
utils.consoleLog(`Notice: Error encountered: ${err} ${err.stack}`);
if (_.includes(errMsg, 'not been deployed to detected network')) {
throw new Error(BlockchainCallErrs.CONTRACT_DOES_NOT_EXIST);
} else {
await errorReporter.reportAsync(err);
throw new Error(BlockchainCallErrs.UNHANDLED_ERROR);
}
}
}