Getting JSBI error while trying to swap 2 token in uinswap using v3-sdk

[Shivamycodee]

Hi, I am trying to perform a swap on uniswap using v3-sdk by following the code:

https://github.com/Uniswap/examples/blob/bbee4b974768ff1668ac56e27d1fe840060bb61b/v3-sdk/trading/src/libs/trading.ts

but while creating an uncheckedTrade and passing the amountOut:

const amountOut = await getOutputQuote(swapRoute);
const amountIn = fromReadableAmount("0.1", 18).toString();
console.log("amountIn : ",typeof amountIn,amountIn);

const uncheckedTrade = Trade.createUncheckedTrade({
route: swapRoute,
inputAmount: CurrencyAmount.fromRawAmount(
WMATIC,
amountIn
),
outputAmount: CurrencyAmount.fromRawAmount(
WETH,
JSBI.BigInt(amountOut) // here....
),
tradeType: TradeType.EXACT_INPUT,
});

I'm getting an error:

Error: Convert JSBI instances to native numbers using toNumber
but when i pass the amountOut directly in string format, the unckeced trade get successfully created but then i get an error in trade execution :

throw new Error('Could not parse fraction');   
^ Error: Could not parse fraction  

I'm trying to solve this issue for long time and tried other methods but didn't worked.
It would be great if anybody can help...