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export * from './signPermit2'; |
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import { | ||
AllowanceTransfer, | ||
Permit2Batch, | ||
PermitDetails, | ||
PERMIT2, | ||
BALANCER_ROUTER, | ||
MaxSigDeadline, | ||
ChainId, | ||
} from '../../src'; | ||
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export const signPermit2 = async (client, details: PermitDetails[]) => { | ||
const chainId = ChainId.SEPOLIA; | ||
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const batch: Permit2Batch = { | ||
details, | ||
spender: BALANCER_ROUTER[chainId], | ||
sigDeadline: MaxSigDeadline, | ||
}; | ||
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const { domain, types, values } = AllowanceTransfer.getPermitData( | ||
batch, | ||
PERMIT2[chainId], | ||
chainId, | ||
); | ||
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const signature = await client.signTypedData({ | ||
message: { ...values }, | ||
domain, | ||
primaryType: 'PermitBatch', | ||
types, | ||
}); | ||
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return { signature, batch }; | ||
}; |
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// use custom path to query and return the queryOutput | ||
/** | ||
* Example showing how to query swap using paths from the SOR | ||
* | ||
* Run with: | ||
* pnpm example ./examples/swaps/queryCustomPath.ts | ||
*/ | ||
import { config } from 'dotenv'; | ||
config(); | ||
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import { | ||
ChainId, | ||
SwapKind, | ||
Swap, | ||
ExactInQueryOutput, | ||
ExactOutQueryOutput, | ||
} from '../../src'; | ||
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import { Address, parseUnits } from 'viem'; | ||
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const queryCustomPath = async () => { | ||
// User defined | ||
const rpcUrl = process.env.SEPOLIA_RPC_URL; | ||
const chainId = ChainId.SEPOLIA; | ||
const pool = '0xb27aC1DD8192163CFbD6F977C91D31A07E941B87' as Address; // Constant Product Pool from scaffold balancer v3 | ||
const tokenIn = { | ||
address: '0x83f953D2461C6352120E06f5f8EcCD3e4d66d042' as Address, // MockToken1 from scaffold balancer v3 | ||
decimals: 18, | ||
}; | ||
const tokenOut = { | ||
address: '0x9d57eDCe10b7BdDA98997613c33ff7f3e34F4eAd' as Address, | ||
decimals: 18, | ||
}; | ||
const swapKind = SwapKind.GivenIn; | ||
const tokens = [tokenIn, tokenOut]; | ||
const protocolVersion = 3 as const; | ||
const inputAmountRaw = parseUnits('1', 18); | ||
const outputAmountRaw = parseUnits('1', 18); | ||
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const customPaths = [ | ||
{ | ||
pools: [pool], | ||
tokens, | ||
protocolVersion, | ||
inputAmountRaw, | ||
outputAmountRaw, | ||
}, | ||
]; | ||
const swapInput = { chainId, swapKind, paths: customPaths }; | ||
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// Swap object provides useful helpers for re-querying, building call, etc | ||
const swap = new Swap(swapInput); | ||
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// Get up to date swap result by querying onchain | ||
const queryOutput = (await swap.query(rpcUrl)) as | ||
| ExactInQueryOutput | ||
| ExactOutQueryOutput; | ||
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// Construct transaction to make swap | ||
if (queryOutput.swapKind === SwapKind.GivenIn) { | ||
console.log(`Updated amount: ${queryOutput.expectedAmountOut.amount}`); | ||
} else { | ||
console.log(`Updated amount: ${queryOutput.expectedAmountIn.amount}`); | ||
} | ||
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return { swap, queryOutput }; | ||
}; | ||
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export default queryCustomPath; |
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/** | ||
* Example showing how to query swap using paths from the SOR | ||
* | ||
* Run with: | ||
* pnpm example ./examples/swaps/querySmartPath.ts | ||
*/ | ||
import { config } from 'dotenv'; | ||
config(); | ||
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import { | ||
BalancerApi, | ||
API_ENDPOINT, | ||
ChainId, | ||
SwapKind, | ||
Token, | ||
TokenAmount, | ||
Swap, | ||
} from '../../src'; | ||
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const querySmartPath = async () => { | ||
// User defined | ||
const rpcUrl = process.env.SEPOLIA_RPC_URL; | ||
const chainId = ChainId.SEPOLIA; | ||
const swapKind = SwapKind.GivenOut; | ||
const tokenIn = new Token( | ||
chainId, | ||
'0xE8d4E9Fc8257B77Acb9eb80B5e8176F4f0cBCeBC', | ||
18, | ||
'MockToken1', | ||
); | ||
const tokenOut = new Token( | ||
chainId, | ||
'0xF0Bab79D87F51a249AFe316a580C1cDFC111bE10', | ||
18, | ||
'MockToken2', | ||
); | ||
const swapAmount = | ||
swapKind === SwapKind.GivenIn | ||
? TokenAmount.fromHumanAmount(tokenIn, '1.2345678910') | ||
: TokenAmount.fromHumanAmount(tokenOut, '1.2345678910'); | ||
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// API is used to fetch best path from available liquidity | ||
const balancerApi = new BalancerApi(API_ENDPOINT, chainId); | ||
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const sorPaths = await balancerApi.sorSwapPaths.fetchSorSwapPaths({ | ||
chainId, | ||
tokenIn: tokenIn.address, | ||
tokenOut: tokenOut.address, | ||
swapKind, | ||
swapAmount, | ||
}); | ||
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const swapInput = { | ||
chainId, | ||
paths: sorPaths, | ||
swapKind, | ||
}; | ||
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// Swap object provides useful helpers for re-querying, building call, etc | ||
const swap = new Swap(swapInput); | ||
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console.log( | ||
`Input token: ${swap.inputAmount.token.address}, Amount: ${swap.inputAmount.amount}`, | ||
); | ||
console.log( | ||
`Output token: ${swap.outputAmount.token.address}, Amount: ${swap.outputAmount.amount}`, | ||
); | ||
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// Get up to date swap result by querying onchain | ||
const queryOutput = await swap.query(rpcUrl); | ||
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// Construct transaction to make swap | ||
if (queryOutput.swapKind === SwapKind.GivenIn) { | ||
console.log(`Updated amount: ${queryOutput.expectedAmountOut.amount}`); | ||
} else { | ||
console.log(`Updated amount: ${queryOutput.expectedAmountIn.amount}`); | ||
} | ||
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return queryOutput; | ||
}; | ||
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export default querySmartPath; |
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