Calculate Price Impact for Uniswap V3 Swaps with Code | JavaScript, EthersJS & Quoter2
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- Опубликовано: 18 янв 2023
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Courses:
👉 Build a Uniswap V3 interface that can do swaps: bit.ly/3JkXYqL
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How can you estimate the price impact (slippage) of a trade on Uniswap V3 before running it?
This is important because for some swap pools, a small trade can result in a large price change and negatively affect your profits.
Today we'll learn to estimate price impact on Uniswap V3 with the Quoter2 contract and some basic math.
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Imports, Contract Addresses, & ABIs:
gist.github.com/BlockmanCodes... 
Наука
Learn to use all the Uniswap swap and liquidity functionality with code. bit.ly/3JkXYqL
This is great and simplified a lot of overcomplicated bumf from the docs (which are great if you're trying to build a dex but not so great if you're just trying to make a few swaps).
What I really want is a simplified version of calculating volume to reach target price for arbitrage. The calcs using SwapMath and the SDK are mental.
bro following you for a long time. I did a master's in public administration but love to trade or write code for trade .. so I start learning. in a year of following many tutorials that are available on youtube so I stick to your uni swap v3 series I got a lot more than 9 months of knowledge by only following you 😍
Thanks for following along brother. Keep it up!
These videos are amazing. I am on this same journey as well. Keep going, you are leading the way!
Thanks brother!
Dude you are a master of discovering useful things from the Uniswap repos that aren't even mentioned in their docs, keep up the great work! 👍
If you ever decide to make a subsequent video on this topic that also explains how to use the trade object's priceImpact property and turn the percent and fraction objects into something useable/readable that would be much appreciated.
Thanks brother. I'll add that to my todo list
What other Uniswap tutorials do you want to see?
A tutorial on multicall to swap then unwrap WETH in 1 transaction coming soon!
can we approve token in the same multicall call ? so as to get rid of the Approval Tx? Thanks for your tutorials man , you're amazing
How to create chart via subgraph API plz make one video!
Thanks a lot for THIS video
we look forward to it
universal swap
How do I import a wallet address to my Trust Wallet with code?
Thanks for this video. I took a course at Udemy on Triangular Arbitrage and I'd like to know how the price impact is affected by 3 swaps. In the course I took, there are opportunities returned after scoping out possibilities at Uniswap (3 different pairs;2 of each token) and some of the profit potentials are in the double digits. Yet when I go and compare the prices returned with the Uniswap tool after less than a minute, the final result usually shows 0% profit and even .99 or less than 1 unit which is what I start with. I would love to know how to compute price impact with the 3 pairs and get results which match the Uniswap tool.
Eagerly waiting for python tutorials in uniswap.
Greetings, I appreciate the content immensely. Was wondering if you can create a full uniswap project (multi token) we can deploy and receive fees from.
great work sirr..........
Your welcome!
Thank! Awesome content! One question: Is possible to use same logic `` await quoter.callStatic `` to get the gas-cost (in-units) for the tx?
That's a good question. I don't think it would be accurate because the Quoter has different solidity code than the swap router.
I m using your UniswapCourse 10 to run the uniswap to sepolia testnet. But the Price Impact percent is different from the uniswap V3 website. May i know is the formula different?
Nice!
Thank you!
Could you tell me how to make a bot that will repeat purchases and sales from the donor's wallet?
Hi I am having a price impact of 99% in Coinbase wallet while swapping what should I do to swap it with low impact please help
Thanks for the great work. Is there any way to bypass the "Price Impact Too High" message? For some coins, I do not care if i am getting less coins than expected.
can you please explain the complex method because there's a lot of swaps in the same block i really need an accurate method to my project
So in theory can we implement this for finding optimal input amount in arbitrage like V2-V2-V3. With simple V2 AMM it's clear. But I can't understand how to put V3 into this equation.
How do I import a wallet address to my Trust Wallet with a javascript code?
Thank you
This is too much 😊
Do mind explain 1) why you used "3000" as the fee input in the main() function, and 2) why you used "100" within ethers.utils.parseEther("100")? Thanks
They represent different things. 3000 represents a fee tier of 0.3%. 100 represents 100 tokens, but solidity contracts expects the smallest divisible unit of a token. parseEther() does that conversion.
How do you get the fee for a pool before you have the pool address? Seems like an oversight on Uniswap's end.
Generally, you can assume there is already a swap pool for every fee level (though some may give bad prices). From there, you can lookup a pool based on the fee of your choice.
Something is giwing an error. From here: const quote = await quoter.callStatic.quoteExactInputSingle(params) reason: 'invalid BigNumber value',
code: 'INVALID_ARGUMENT',
argument: 'value',
value: undefined Can you put the whole code? I followed the tutorial but... I'm not sure where I misstyped.
Getting the same error
I was using the wrong version of Ethers. You may want to check current version on your project.
@@Jayster7101 Thanks :)
How come price and priceAfter are 1.55 to the power of 10^(-21), aren't these human-readable prices?
Are you using different tokens?
You don’t need different abi, can just use erc20 for all tokens.
Yes, usually. Most ERC20s are the same but be careful because there can be different functions
is price impact and slippage refers to same term??
The difference is price impact is self inflicted while slippage is held at the mercy of the market.
Got it, Thanks
@@Shivamyadav-ho2qi Best of luck, hope the profit comes your way.
something is wrong with the code. price you have in your presentation Weth - USDC is 1.5519021690887964e-21, it is way too small.. even with toFixed(20) it is still 0.
console.log((1.5519021690887964e-21).toFixed(20));
output: 0.00000000000000000000
Hi, guys. Do you have telegram or WhatsApp group?
I don't. Too distracting to support questions about 100 tutorials :(
@@blockmancodes that's true