Calculation of Quoting for WETH to USDC is Wrong about examples HOT 3 OPEN

Hey @arjunaskykok ,

I've ran into the same problem, and here's what I've found after a bit of debugging:

In the example, you're using the token addresses returned by the poolContract to call the quoteExactInputSingle function.

Like so:

 const [token0, token1, fee] = await Promise.all([
    poolContract.token0(),
    poolContract.token1(),
    poolContract.fee(),
  ])

Whereas, what appears to be the case, is that the order in which the contract returns token0 and token1 isn't guaranteed, in fact it appears to be returning the tokens in alphabetical order. One might call it consistently inconsistent.

The solution is quite simple, albeit, the examples should be updated to reflect this.

Simply don't use the token addresses returned by the pool contract when calling quoteExactInputSingle, as you already know the token addresses anyways.

  const quotedAmountOut = await quoterContract.callStatic.quoteExactInputSingle(
    CurrentConfig.tokens.in.address, // instead of: await poolContract.token0()
    CurrentConfig.tokens.out.address, // instead of: await poolContract.token1()
    poolConstants.fee,
    fromReadableAmount(
      CurrentConfig.tokens.amountIn,
      CurrentConfig.tokens.in.decimals
    ).toString(),
    0
  )

from examples.

@balazsotakomaiya , Thanks for the solution. It works!

from examples.