Change LiquidityForAssetData to return a BigNumber instead of a number to avoid losing precision

3 files changed, 6 insertions, 6 deletions

diff --git a/packages/asset-buyer/src/asset_buyer.ts b/packages/asset-buyer/src/asset_buyer.ts
index b4b024d62..4344f070c 100644
--- a/packages/asset-buyer/src/asset_buyer.ts
+++ b/packages/asset-buyer/src/asset_buyer.ts
@@ -200,8 +200,8 @@ export class AssetBuyer {
         const etherTokenAssetData = this._getEtherTokenAssetDataOrThrow();
         if (!assetPairs.includes(etherTokenAssetData)) {
             return {
-                tokensAvailableInBaseUnits: 0,
-                ethValueAvailableInWei: 0,
+                tokensAvailableInBaseUnits: new BigNumber(0),
+                ethValueAvailableInWei: new BigNumber(0),
             };
         }
 
diff --git a/packages/asset-buyer/src/types.ts b/packages/asset-buyer/src/types.ts
index 9208a3217..46a2338ce 100644
--- a/packages/asset-buyer/src/types.ts
+++ b/packages/asset-buyer/src/types.ts
@@ -137,6 +137,6 @@ export interface OrdersAndFillableAmounts {
  * Represents available liquidity for a given assetData
  */
 export interface LiquidityForAssetData {
-    tokensAvailableInBaseUnits: number;
-    ethValueAvailableInWei: number;
+    tokensAvailableInBaseUnits: BigNumber;
+    ethValueAvailableInWei: BigNumber;
 }
diff --git a/packages/asset-buyer/src/utils/calculate_liquidity.ts b/packages/asset-buyer/src/utils/calculate_liquidity.ts
index 910c756ac..a8d165b4b 100644
--- a/packages/asset-buyer/src/utils/calculate_liquidity.ts
+++ b/packages/asset-buyer/src/utils/calculate_liquidity.ts
@@ -28,7 +28,7 @@ export const calculateLiquidity = (ordersAndFillableAmounts: OrdersAndFillableAm
 
     // Turn into regular numbers
     return {
-        tokensAvailableInBaseUnits: liquidityInBigNumbers.tokensAvailableInBaseUnits.toNumber(),
-        ethValueAvailableInWei: liquidityInBigNumbers.ethValueAvailableInWei.toNumber(),
+        tokensAvailableInBaseUnits: liquidityInBigNumbers.tokensAvailableInBaseUnits,
+        ethValueAvailableInWei: liquidityInBigNumbers.ethValueAvailableInWei,
     };
 };