aboutsummaryrefslogtreecommitdiffstats
path: root/packages
diff options
context:
space:
mode:
Diffstat (limited to 'packages')
-rw-r--r--packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts13
1 files changed, 9 insertions, 4 deletions
diff --git a/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts b/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
index 7b5b4d02a..1edc50cb0 100644
--- a/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
@@ -27,7 +27,7 @@ import {TokenWrapper} from './token_wrapper';
* The caller can convert ETH into the equivalent number of wrapped ETH ERC20 tokens and back.
*/
export class EtherTokenWrapper extends ContractWrapper {
- private _etherTokenContractIfExists?: EtherTokenContract;
+ private _etherTokenContractsByAddress: {[address: string]: EtherTokenContract};
private _tokenWrapper: TokenWrapper;
constructor(web3Wrapper: Web3Wrapper, networkId: number, abiDecoder: AbiDecoder, tokenWrapper: TokenWrapper) {
super(web3Wrapper, networkId, abiDecoder);
@@ -144,14 +144,19 @@ export class EtherTokenWrapper extends ContractWrapper {
}
private _invalidateContractInstance(): void {
this.unsubscribeAll();
- delete this._etherTokenContractIfExists;
+ this._etherTokenContractsByAddress = {};
}
private async _getEtherTokenContractAsync(etherTokenAddress: string): Promise<EtherTokenContract> {
+ let etherTokenContract = this._etherTokenContractsByAddress[etherTokenAddress];
+ if (!_.isUndefined(etherTokenContract)) {
+ return etherTokenContract;
+ }
const web3ContractInstance = await this._instantiateContractIfExistsAsync(
artifacts.EtherTokenArtifact, etherTokenAddress,
);
const contractInstance = new EtherTokenContract(web3ContractInstance, this._web3Wrapper.getContractDefaults());
- this._etherTokenContractIfExists = contractInstance;
- return this._etherTokenContractIfExists;
+ etherTokenContract = contractInstance;
+ this._etherTokenContractsByAddress[etherTokenAddress] = etherTokenContract;
+ return etherTokenContract;
}
}