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-rw-r--r--src/web3_wrapper.ts17
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 {