63 lines
1.5 KiB
JavaScript
63 lines
1.5 KiB
JavaScript
const { instances, netId } = require('../config')
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const { poseidon } = require('circomlib')
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const { toBN, toChecksumAddress } = require('web3-utils')
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const sleep = ms => new Promise(res => setTimeout(res, ms))
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function getInstance(address) {
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address = toChecksumAddress(address)
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const inst = instances[`netId${netId}`]
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for (const currency of Object.keys(inst)) {
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for (const amount of Object.keys(inst[currency].instanceAddress)) {
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if (inst[currency].instanceAddress[amount] === address) {
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return { currency, amount }
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}
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}
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}
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return null
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}
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// async function setSafeInterval(func, interval) {
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// try {
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// await func()
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// } catch (e) {
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// console.error('Unhandled promise error:', e)
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// } finally {
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// setTimeout(() => setSafeInterval(func, interval), interval)
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// }
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// }
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const poseidonHash = items => toBN(poseidon(items).toString())
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const poseidonHash2 = (a, b) => poseidonHash([a, b])
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function setSafeInterval(func, interval) {
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func()
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.catch(console.error)
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.finally(() => {
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setTimeout(() => setSafeInterval(func, interval), interval)
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})
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}
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/**
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* A promise that resolves when the source emits specified event
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*/
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function when(source, event) {
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return new Promise((resolve, reject) => {
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source
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.once(event, payload => {
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resolve(payload)
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})
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.on('error', error => {
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reject(error)
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})
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})
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}
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module.exports = {
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getInstance,
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setSafeInterval,
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poseidonHash2,
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sleep,
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when,
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}
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