Get a pairs by pool addresses using Etherscan.io

pool2pair.js

make_url = a => `https://etherscan.io/address/${a}#notes`

a = new Set()

Object.keys(state.exchanges.uniswap_v3).forEach(t0 => {
    Object.keys(state.exchanges.uniswap_v3[t0]).forEach(t1 => {
        a.add(state.exchanges.uniswap_v3[t0][t1])
    })
})

state.exchanges.uniswap_v3 = {}

a = [...a]
total = a.length
a.reduce((chain, address, i) =>
    chain
    .then(() => fetch(make_url(address)))
    .then(_ => _.text())
    .then(s => {
            var [_, A, B] = s.match(/exchange between (.+) and (.+)\./)
            state.exchanges.uniswap_v3[A] ??= {}
            state.exchanges.uniswap_v3[A][B] = address
            state.exchanges.uniswap_v3[B] ??= {}
            state.exchanges.uniswap_v3[B][A] = true
            console.log(A,B, `${i}/${total}`)
    })
    .then(
        () => new Promise(ok => setTimeout(ok, 2000))
    ),
Promise.resolve()
)