Merge pull request #1372 from 0xProject/fix/instant/single-asset

[instant] render token selector when only one asset is available

2 files changed, 6 insertions, 5 deletions

diff --git a/packages/instant/src/components/erc20_asset_amount_input.tsx b/packages/instant/src/components/erc20_asset_amount_input.tsx
index ff900842a..4da82eb73 100644
--- a/packages/instant/src/components/erc20_asset_amount_input.tsx
+++ b/packages/instant/src/components/erc20_asset_amount_input.tsx
@@ -113,7 +113,7 @@ export class ERC20AssetAmountInput extends React.Component<ERC20AssetAmountInput
         );
     };
     private readonly _renderChevronIcon = (): React.ReactNode => {
-        if (!this._areMultipleAssetsAvailable()) {
+        if (!this._areAnyAssetsAvailable()) {
             return null;
         }
         return (
@@ -134,14 +134,14 @@ export class ERC20AssetAmountInput extends React.Component<ERC20AssetAmountInput
         // We don't want to allow opening the token selection panel if there are no assets.
         // Since styles are inferred from the presence of a click handler, we want to return undefined
         // instead of providing a noop.
-        if (!this._areMultipleAssetsAvailable() || _.isUndefined(this.props.onSelectAssetClick)) {
+        if (!this._areAnyAssetsAvailable() || _.isUndefined(this.props.onSelectAssetClick)) {
             return undefined;
         }
         return this._handleSelectAssetClick;
     };
-    private readonly _areMultipleAssetsAvailable = (): boolean => {
+    private readonly _areAnyAssetsAvailable = (): boolean => {
         const { numberOfAssetsAvailable } = this.props;
-        return !_.isUndefined(numberOfAssetsAvailable) && numberOfAssetsAvailable > 1;
+        return !_.isUndefined(numberOfAssetsAvailable) && numberOfAssetsAvailable > 0;
     };
     private readonly _handleSelectAssetClick = (): void => {
         if (this.props.onSelectAssetClick) {
diff --git a/packages/instant/src/redux/async_data.ts b/packages/instant/src/redux/async_data.ts
index 18f671cd7..c67b222d1 100644
--- a/packages/instant/src/redux/async_data.ts
+++ b/packages/instant/src/redux/async_data.ts
@@ -32,7 +32,8 @@ export const asyncData = {
         const assetBuyer = providerState.assetBuyer;
         try {
             const assetDatas = await assetBuyer.getAvailableAssetDatasAsync();
-            const assets = assetUtils.createAssetsFromAssetDatas(assetDatas, assetMetaDataMap, network);
+            const deduplicatedAssetDatas = _.uniq(assetDatas);
+            const assets = assetUtils.createAssetsFromAssetDatas(deduplicatedAssetDatas, assetMetaDataMap, network);
             dispatch(actions.setAvailableAssets(assets));
         } catch (e) {
             const errorMessage = 'Could not find any assets';