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v3 routing guide: alpha router instance can't be created #843

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kremalicious opened this issue Dec 18, 2024 · 0 comments

kremalicious commented Dec 18, 2024 •

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Out of the box, the v3 routing guide is not working as TypeScript complains about wrong imports.

This example for setting up the router has at least 2 issues:

import { AlphaRouter, ChainId } from '@uniswap/smart-order-router'

const provider = new ethers.providers.JsonRpcProvider(rpcUrl)

const router = new AlphaRouter({
  chainId: ChainId.MAINNET,
  provider,
})

there is no ChainId exported from @uniswap/smart-order-router
when using the correct import from @uniswap/sdk-core, TypeScript complains with "Type 'ChainId.MAINNET' is not assignable to type 'ChainId'"

My versions

"@uniswap/sdk-core": "^6.1.1",
"@uniswap/smart-order-router": "^4.9.2"

To me it looks like @uniswap/sdk-core v6 introduced this. For now, my solution is to keep sdk-core downgraded to v5.9.0.

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