Split Existential Deposit and margin

Restore EXISTENTIAL_DEPOSIT, use new constant EXISTENTIAL_DEPOSIT_RECOMMENDED_MARGIN to handle recommended margin
LedgerHQ · May 12, 2022 · 437622f · 437622f
1 parent e8aea66
commit 437622f
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Showing 2 changed files with 8 additions and 2 deletions.
diff --git a/src/families/polkadot/js-getTransactionStatus.ts b/src/families/polkadot/js-getTransactionStatus.ts
@@ -36,6 +36,7 @@ import {
   calculateAmount,
   getMinimumAmountToBond,
   getMinimumBalance,
+  EXISTENTIAL_DEPOSIT_RECOMMENDED_MARGIN,
 } from "./logic";
 import { isValidAddress } from "./address";
 import { getCurrentPolkadotPreloadData } from "./preload";
@@ -77,7 +78,11 @@ const getSendTransactionStatus = async (
   const minimumBalanceExistential = getMinimumBalance(a);
   const leftover = a.spendableBalance.minus(totalSpent);
 
-  if (a.spendableBalance.lte(EXISTENTIAL_DEPOSIT)) {
+  if (
+    a.spendableBalance.lte(
+      EXISTENTIAL_DEPOSIT.plus(EXISTENTIAL_DEPOSIT_RECOMMENDED_MARGIN)
+    )
+  ) {
     errors.amount = new NotEnoughBalance();
   } else if (
     minimumBalanceExistential.gt(0) &&

diff --git a/src/families/polkadot/logic.ts b/src/families/polkadot/logic.ts
@@ -3,7 +3,8 @@ import type { Account, OperationType } from "../../types";
 import type { Transaction } from "./types";
 import { getCurrentPolkadotPreloadData } from "./preload";
 
-export const EXISTENTIAL_DEPOSIT = new BigNumber(11000000000);
+export const EXISTENTIAL_DEPOSIT = new BigNumber(10000000000);
+export const EXISTENTIAL_DEPOSIT_RECOMMENDED_MARGIN = new BigNumber(1000000000); // Polkadot recommended Existential Deposit error margin
 export const MAX_NOMINATIONS = 16;
 export const MAX_UNLOCKINGS = 32;
 export const PRELOAD_MAX_AGE = 60 * 1000;