diff options
| -rw-r--r-- | src/web3_wrapper.ts | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/src/web3_wrapper.ts b/src/web3_wrapper.ts index 630f0bef3..8c410eef7 100644 --- a/src/web3_wrapper.ts +++ b/src/web3_wrapper.ts @@ -5,11 +5,13 @@ import promisify = require('es6-promisify'); export class Web3Wrapper { private web3: Web3; + private networkIdIfExists?: number; constructor(provider: Web3.Provider) { this.web3 = new Web3(); this.web3.setProvider(provider); } public setProvider(provider: Web3.Provider) { + this.networkIdIfExists = undefined; this.web3.setProvider(provider); } public isAddress(address: string): boolean { @@ -27,11 +29,16 @@ export class Web3Wrapper { return this.web3.currentProvider; } public async getNetworkIdIfExistsAsync(): Promise<number|undefined> { - try { - const networkId = await this.getNetworkAsync(); - return Number(networkId); - } catch (err) { - return undefined; + if (_.isUndefined(this.networkIdIfExists)) { + try { + const networkId = await this.getNetworkAsync(); + this.networkIdIfExists = Number(networkId); + return this.networkIdIfExists; + } catch (err) { + return undefined; + } + } else { + return this.networkIdIfExists; } } public toWei(ethAmount: BigNumber.BigNumber): BigNumber.BigNumber { |