Only send in amountAvailableToFill if it's a non-zero amount, add additional tests and nest, and put error into its own file

1 files changed, 5 insertions, 1 deletions

diff --git a/packages/instant/src/util/asset.ts b/packages/instant/src/util/asset.ts
index 5e83e7e6d..756194f1f 100644
--- a/packages/instant/src/util/asset.ts
+++ b/packages/instant/src/util/asset.ts
@@ -113,7 +113,11 @@ export const assetUtils = {
     assetBuyerErrorMessage: (asset: ERC20Asset, error: Error): string | undefined => {
         if (error.message === AssetBuyerError.InsufficientAssetLiquidity) {
             const assetName = assetUtils.bestNameForAsset(asset, 'of this asset');
-            if (error instanceof InsufficientAssetLiquidityError) {
+            if (
+                error instanceof InsufficientAssetLiquidityError &&
+                error.amountAvailableToFill &&
+                error.amountAvailableToFill.greaterThan(BIG_NUMBER_ZERO)
+            ) {
                 const unitAmountAvailableToFill = Web3Wrapper.toUnitAmount(
                     error.amountAvailableToFill,
                     asset.metaData.decimals,