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-rw-r--r--packages/contract-wrappers/src/contract_wrappers/erc721_token_wrapper.ts10
1 files changed, 5 insertions, 5 deletions
diff --git a/packages/contract-wrappers/src/contract_wrappers/erc721_token_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/erc721_token_wrapper.ts
index 86c3e2d99..53190d007 100644
--- a/packages/contract-wrappers/src/contract_wrappers/erc721_token_wrapper.ts
+++ b/packages/contract-wrappers/src/contract_wrappers/erc721_token_wrapper.ts
@@ -155,14 +155,14 @@ export class ERC721TokenWrapper extends ContractWrapper {
return isProxyApprovedForAll;
}
/**
- * Get the approved address for a single NFT
+ * Get the approved address for a single NFT. Returns undefined if no approval was set
* Throws if `_tokenId` is not a valid NFT
* @param tokenAddress The hex encoded contract Ethereum address where the ERC721 token is deployed.
* @param tokenId The identifier for an NFT
* @param methodOpts Optional arguments this method accepts.
- * @return The approved address for this NFT, or the zero address if there is none
+ * @return The approved address for this NFT, or the undefined if there is none
*/
- public async getApprovedAsync(
+ public async getApprovedIfExistsAsync(
tokenAddress: string,
tokenId: BigNumber,
methodOpts?: MethodOpts,
@@ -197,7 +197,7 @@ export class ERC721TokenWrapper extends ContractWrapper {
methodOpts?: MethodOpts,
): Promise<boolean> {
const proxyAddress = this._erc721ProxyWrapper.getContractAddress();
- const approvedAddress = await this.getApprovedAsync(tokenAddress, tokenId, methodOpts);
+ const approvedAddress = await this.getApprovedIfExistsAsync(tokenAddress, tokenId, methodOpts);
const isProxyApproved = approvedAddress === proxyAddress;
return isProxyApproved;
}
@@ -354,7 +354,7 @@ export class ERC721TokenWrapper extends ContractWrapper {
normalizedSenderAddress,
);
if (!isApprovedForAll) {
- const approved = await this.getApprovedAsync(normalizedTokenAddress, tokenId);
+ const approved = await this.getApprovedIfExistsAsync(normalizedTokenAddress, tokenId);
if (approved !== senderAddress) {
throw new Error(ContractWrappersError.ERC721NoApproval);
}