added exceptions

README.md

@@ -46,6 +46,13 @@ Get the swap fee (liquidity provider fee) between two currencies.
 ```javascript
 async function getFeeRate(from: Currency, to: Currency): Promise<bigint>;
 ```
+Exceptions:
+```javascript
+- "Failed to fetch token mappings"
+- "No AMM pools in route"
+- "Too many AMM pools in route"
+- "Error calling read-only function"
+```
 
 ### getRouter
 
@@ -54,6 +61,11 @@ Get the router path for swapping between two currencies.
 ```javascript
 async function getRouter(from: Currency, to: Currency): Promise<Currency[]>;
 ```
+Exceptions:
+```javascript
+- "Failed to fetch token mappings"
+- "Can't find route"
+```
 
 ### getAmountTo
 
@@ -62,6 +74,13 @@ Get the amount of destination currency that will be received when swapping from
 ```javascript
 async function getAmountTo(from: Currency, fromAmount: bigint, to: Currency): Promise<bigint>;
 ```
+Exceptions:
+```javascript
+- "Failed to fetch token mappings"
+- "No AMM pool found for the given route"
+- "Too many AMM pools in route"
+- "Error calling read-only function"
+```
 
 ### runSwap
 
@@ -71,6 +90,13 @@ Perform a swap between two currencies using the specified route and amount.
 function runSwap(stxAddress: string, currencyX: Currency, currencyY: Currency, 
                   fromAmount: bigint, minDy: bigint, router: Currency[]): TxToBroadCast;
 ```
+Exceptions:
+```javascript
+- "Failed to fetch token mappings"
+- "Can't find AMM route"
+- "Token mapping not found"
+- "Too many AMM pools in route"
+```
 
 **getLatestPrices**
 
@@ -79,6 +105,10 @@ This function fetches the current price data for all supported tokens. It return
 ```javascript
 async function getLatestPrices(): Promise<Partial<{ [currency in Currency]: number }>>;
 ```
+Exceptions:
+```javascript
+- "Failed to fetch token mappings"
+```
 
 **getBalances**
 
@@ -87,6 +117,10 @@ This function fetches the current balances of all supported tokens for a specifi
 ```javascript
 async function getBalances(stxAddress: string): Promise<Partial<{ [currency in Currency]: bigint }>>;
 ```
+Exceptions:
+```javascript
+- "Failed to fetch token mappings"
+```
 
 **fetchSwappableCurrency**
 
@@ -95,6 +129,10 @@ This function returns an array of `TokenInfo` objects, each containing detailed
 ```javascript
 function fetchSwappableCurrency(): Promise<TokenInfo[]>;
 ```
+Exceptions:
+```javascript
+- "Failed to fetch token mappings"
+```
 
 ## Installation