fix: unstake limits for ERC4626 (#491)

Author: petar-omni

.changeset/calm-owls-accept.md

@@ -0,0 +1,5 @@
+---
+"@stakekit/widget": patch
+---
+
+fix: unstake limits for ERC4626

packages/widget/src/domain/types/stake.ts

@@ -11,6 +11,7 @@ import type { SupportedSKChains } from "./chains";
 import type { InitParams } from "./init-params";
 import type { PositionsData } from "./positions";
 import type { TokenString } from "./tokens";
+import { isBittensorStaking } from "./yields";
 
 const amountGreaterThanZero = (val: TokenBalanceScanResponseDto) =>
   new BigNumber(val.amount).isGreaterThan(0);
@@ -197,9 +198,9 @@ export const getMinUnstakeAmount = (
 
   const pricePerShareBN = new BigNumber(pricePerShare ?? 0);
 
-  if (pricePerShareBN.isZero()) {
+  if (pricePerShareBN.isZero() || !isBittensorStaking(yieldDto.id)) {
     return integrationMin;
   }
 
-  return integrationMin.dividedBy(pricePerShareBN).decimalPlaces(8);
+  return integrationMin.dividedBy(pricePerShareBN).decimalPlaces(16);
 };

packages/widget/src/domain/types/yields.ts

@@ -194,3 +194,6 @@ export const getComputedRewardRate = (yieldDto: YieldDto) => {
 
   return yieldDto.rewardRate;
 };
+
+export const isERC4626 = (yieldDto: YieldDto) =>
+  yieldDto.metadata.supportedStandards?.includes("ERC4626") ?? false;

packages/widget/src/pages/position-details/state/index.tsx

@@ -18,6 +18,7 @@ import {
 } from "react";
 import { config } from "../../../config";
 import { isForceMaxAmount } from "../../../domain/types/stake";
+import { isERC4626 } from "../../../domain/types/yields";
 import { usePrices } from "../../../hooks/api/use-prices";
 import { useYieldOpportunity } from "../../../hooks/api/use-yield-opportunity";
 import { useUnstakeOrPendingActionParams } from "../../../hooks/navigation/use-unstake-or-pending-action-params";
@@ -158,7 +159,8 @@ export const UnstakeOrPendingActionProvider = ({
   });
 
   const canChangeUnstakeAmount = integrationData.map(
-    (d) => !!(!isForceMax && d.args.exit?.args?.amount?.required)
+    (d) =>
+      !!(!isForceMax && (d.args.exit?.args?.amount?.required || isERC4626(d)))
   );
 
   const positionBalancesByTypePendingActions = useMemo(