Add gas-price-oracle package
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# editorconfig.org
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[*.md]
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{
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"env": {
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"node": true,
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"browser": true,
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"es6": true,
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"@typescript-eslint/no-floating-promises": 0,
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"@typescript-eslint/strict-boolean-expressions": 0
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name: Node.js CI
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on:
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push:
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pull_request:
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jobs:
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build:
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runs-on: ubuntu-latest
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steps:
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- name: Checkout
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uses: actions/checkout@v2
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- uses: actions/setup-node@v1
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with:
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node-version: 16.15.1
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- run: yarn install --frozen-lockfile
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- run: yarn test
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- run: yarn lint
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publish:
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runs-on: ubuntu-latest
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needs: [build]
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if: startsWith(github.ref, 'refs/tags')
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steps:
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- name: Checkout
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uses: actions/checkout@v2
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- run: yarn install
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- name: NPM login
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# NPM doesn't understand env vars and needs auth file lol
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run: echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" > ~/.npmrc
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env:
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NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
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- name: Set vars
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id: vars
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run: |
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echo "::set-output name=version::$(echo ${GITHUB_REF#refs/tags/v})"
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echo "::set-output name=repo_name::$(echo ${GITHUB_REPOSITORY#*/})"
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- name: Check package.json version vs tag
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run: |
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[ ${{ steps.vars.outputs.version }} = $(grep '"version":' package.json | grep -o "[0-9.]*") ] || (echo "Git tag doesn't match version in package.json" && false)
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- name: Publish to npm
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run: npm publish
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- name: Create GitHub Release Draft
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uses: actions/create-release@v1
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with:
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tag_name: ${{ github.ref }}
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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token: ${{ secrets.TELEGRAM_BOT_TOKEN }}
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message: 🚀 Published [${{ steps.vars.outputs.repo_name }}](https://github.com/${{ github.repository }}) version [${{ steps.vars.outputs.version }}](https://www.npmjs.com/package/${{ steps.vars.outputs.repo_name }}/v/${{ steps.vars.outputs.version }}) to npm
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format: markdown
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@ -0,0 +1,91 @@
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# Created by .ignore support plugin (hsz.mobi)
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### Node template
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# Logs
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/logs
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*.log
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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# Runtime data
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pids
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*.pid
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*.seed
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*.pid.lock
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# Directory for instrumented libs generated by jscoverage/JSCover
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lib
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lib-cov
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coverage
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typings/
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*.tgz
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# dotenv environment variables file
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.env
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# parcel-bundler cache (https://parceljs.org/)
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.cache
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# next.js build output
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.next
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# nuxt.js build output
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.nuxt
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# Nuxt generate
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dist
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# vuepress build output
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.vuepress/dist
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# Serverless directories
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.serverless
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# IDE / Editor
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.idea
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# Service worker
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sw.*
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# macOS
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.DS_Store
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# Vim swap files
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*.swp
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@ -0,0 +1 @@
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16.15.1
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@ -0,0 +1 @@
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lib
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@ -0,0 +1,8 @@
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{
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"semi": false,
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"trailingComma": "all",
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"singleQuote": true,
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"jsxSingleQuote": true,
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"printWidth": 130,
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"tabWidth": 2
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}
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@ -0,0 +1,21 @@
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MIT License
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Copyright (c) 2020 PepperSec
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
|
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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# Gas Price Oracle library for Ethereum dApps [](https://github.com/peppersec/gas-price-oracle/actions) [](https://www.npmjs.com/package/gas-price-oracle)
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This is a library with a collection of onchain and offchain gas price oracle URLs
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## Supported networks
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### Ethereum Mainnet
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Current offchain list:
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- https://ethgasstation.info/json/ethgasAPI.json
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- https://etherchain.org/api/gasnow
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Current onchain list:
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- [chainlink](https://etherscan.io/address/0x169e633a2d1e6c10dd91238ba11c4a708dfef37c#readContract)
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### Binance Smart Chain
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Current offchain list:
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- https://ztake.org/
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### Gnosis Chain
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Current offchain list:
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- https://blockscout.com/xdai/mainnet/api/v1/gas-price-oracle
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### Polygon (Matic) Network
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Current offchain list:
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- https://gasstation-mainnet.matic.network/
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### Avalanche C Network
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Current offchain list:
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- https://gavax.blockscan.com/gasapi.ashx?apikey=key&method=gasoracle
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## Installation
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`npm i gas-price-oracle`
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or
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`yarn add gas-price-oracle`
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## Import
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```js
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const { GasPriceOracle } = require('gas-price-oracle')
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or
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import { GasPriceOracle } from 'gas-price-oracle'
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```
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## Usage
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### Configuration
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```typescript
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type GasPrice = Record<'instant' | 'fast' | 'standard' | 'low', number>
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type EstimatedGasPrice = {
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maxFeePerGas: number
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baseFee: number | undefined
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maxPriorityFeePerGas: number
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}
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type FallbackGasPrices = {
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gasPrices?: GasPrice
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estimated?: EstimatedGasPrice
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}
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type GasOracleOptions = {
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chainId?: number
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timeout?: number
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defaultRpc?: string
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blocksCount?: number
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percentile?: number
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blockTime?: number // seconds
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shouldCache?: boolean
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fallbackGasPrices?: FallbackGasPrices
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}
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const options: GasOracleOptions = {
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chainId: 1,
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percentile: 5, // Which percentile of effective priority fees to include
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blocksCount: 10, // How many blocks to consider for priority fee estimation
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defaultRpc: 'https://api.mycryptoapi.com/eth',
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blockTime: 10, // seconds
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shouldCache: false,
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timeout: 10000, // specifies the number of milliseconds before the request times out.
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minPriority: 0, // specifies the min maxPriorityFeePerGas.
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fallbackGasPrices: {
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gasPrices: {
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instant: 28,
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fast: 22,
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standard: 17,
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low: 11,
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},
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estimated: {
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maxFeePerGas: 20,
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maxPriorityFeePerGas: 3,
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},
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},
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}
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```
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### The Oracle can cache rpc calls
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For caching needs to provide to GasOracleOptions
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`shouldCache: true`
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`blockTime: <Chain block time duration>`
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### EIP-1559 (estimated) gasPrice only
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```typescript
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const oracle = new GasPriceOracle({ chainId: 1 })
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type EstimatedGasPrice = {
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maxFeePerGas: number
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baseFee: number | undefined
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maxPriorityFeePerGas: number
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}
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fallbackGasPrices: EstimatedGasPrice = {
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maxFeePerGas: 20,
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maxPriorityFeePerGas: 3,
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}
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oracle.eip1559.estimateFees(fallbackGasPrices).then((gasPrices: EstimatedGasPrice) => {
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console.log(gasPrices) // { baseFee: 14, maxFeePerGas: 17, maxPriorityFeePerGas: 3 }
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})
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```
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### Legacy gasPrice only
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```typescript
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const oracle = new GasPriceOracle({ chainId: 1 })
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type GasPrice = Record<'instant' | 'fast' | 'standard' | 'low', number>
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fallbackGasPrices: GasPrice = {
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instant: 28,
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fast: 22,
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standard: 17,
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low: 11,
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}
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oracle.legacy.gasPrices(fallbackGasPrices).then((gasPrices: GasPrice) => {
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console.log(gasPrices) // { instant: 21.5, fast: 19, standard: 17, low: 15 }
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})
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```
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The `oracle.legacy.gasPrices` method also accepts `shouldGetMedian` argument (`true`) by default. For more details see [below](#offchain-oracles-only-get-median-price).
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Under the hood it's a combination of `fetchMedianGasPriceOffChain`(`fetchGasPricesOffChain`) and `fetchGasPricesOnChain` methods.
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### Estimated gasPrices (EIP-1559) and Legacy gasPrice
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```ts
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const oracle = new GasPriceOracle(options)
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type GasPriceWithEstimate = {
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gasPrices: GasPrice
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estimate: EstimatedGasPrice
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}
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type GasPricesWithEstimateInput = {
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shouldGetMedian?: boolean
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fallbackGasPrices?: FallbackGasPrices
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}
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// optional fallbackGasPrices
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const fallbackGasPrices: FallbackGasPrices = {
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gasPrices: {
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instant: 28,
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fast: 22,
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standard: 17,
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low: 11,
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},
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estimated: {
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maxFeePerGas: 20,
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maxPriorityFeePerGas: 3,
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},
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}
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oracle.gasPricesWithEstimate({ fallbackGasPrices, shouldGetMedian: true }).then((gasPrices: GasPriceWithEstimate) => {
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console.log(gasPrices) // {
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// estimated: { baseFee: 14, maxFeePerGas: 17, maxPriorityFeePerGas: 3 },
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// gasPrices: { instant: 21.5, fast: 19, standard: 17, low: 15 }
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// }}
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})
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```
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### Estimated gasPrices (EIP-1559) or Legacy gasPrice
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```typescript
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const oracle = new GasPriceOracle(options)
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type GetGasPriceInput = {
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isLegacy?: boolean
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shouldGetMedian?: boolean
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fallbackGasPrices?: GasPrice
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}
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// optional fallbackGasPrices
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const fallbackGasPrices: FallbackGasPrices = {
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gasPrices: {
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instant: 28,
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fast: 22,
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standard: 17,
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low: 11,
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},
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estimated: {
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maxFeePerGas: 20,
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maxPriorityFeePerGas: 3,
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},
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}
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oracle.gasPrices({ fallbackGasPrices, shouldGetMedian: true }).then((gasPrices: GasPrice | EstimatedGasPrice) => {
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console.log(gasPrices) // {
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// baseFee: 14, maxFeePerGas: 17, maxPriorityFeePerGas: 3 ||
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// instant: 21.5, fast: 19, standard: 17, low: 15
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// }}
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})
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```
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The `gasPrices` method also accepts `isLegacy` argument (`false`) by default. If `isLegacy: true` - `legacy gasPrice` will be provided. If the `estimate Gas` crashes, `legacy gas Price` will be provided.
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### Get transaction gasPrice params
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```typescript
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const oracle = new GasPriceOracle(options)
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type GetTxGasParamsInput = {
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bumpPercent?: number
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legacySpeed?: GasPriceKey
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isLegacy?: boolean
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shouldGetMedian?: boolean
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fallbackGasPrices?: FallbackGasPrices
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}
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type GetTxGasParamsRes =
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| {
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gasPrice: number
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}
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| {
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maxFeePerGas: number
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maxPriorityFeePerGas: number
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}
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const gasParams: GetTxGasParamsRes = await oracle.getTxGasParams({ legacySpeed: 'fast', bumpPercent: 30 })
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console.log(gasParams) // { maxFeePerGas: 17, maxPriorityFeePerGas: 3 } || { gasPrice: 19 }
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web3.eth.sendTransaction({
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from: '0xEA674fdDe714fd979de3EdF0F56AA9716B898ec8',
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to: '0xac03bb73b6a9e108530aff4df5077c2b3d481e5a',
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nonce: '0',
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gasLimit: '21000',
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value: '10000000000',
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...gasParams,
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})
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```
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`bumpPercent` argument (`0` by default) - response data will increase by `bumpPercent`%.
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`legacySpeed` argument (`fast` by default) - select the speed of legacy gasPrice.
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### Offchain oracles only
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```typescript
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const oracle = new GasPriceOracle({ chainId: 1 })
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// shouldGetMedian: boolean | undefined
|
||||
oracle.legacy.fetchGasPricesOffChain((shouldGetMedian = true)).then((gasPrices: GasPrice) => {
|
||||
console.log(gasPrices) // { instant: 50, fast: 21, standard: 10, low: 3 }
|
||||
})
|
||||
```
|
||||
|
||||
### Offchain oracles only (get median price)
|
||||
|
||||
```typescript
|
||||
const oracle = new GasPriceOracle({ chainId: 1 })
|
||||
|
||||
oracle.legacy.fetchMedianGasPriceOffChain().then((gasPrices: GasPrice) => {
|
||||
console.log(gasPrices) // { instant: 50, fast: 21, standard: 10, low: 3 }
|
||||
})
|
||||
```
|
||||
|
||||
This command provides the median gas price of all configured oracles.
|
||||
|
||||
### Custom RPC URL for onchain oracles
|
||||
|
||||
```typescript
|
||||
const defaultRpc = 'https://mainnet.infura.io/v3/<API_KEY>'
|
||||
const oracle = new GasPriceOracle({ defaultRpc, chainId: 1 })
|
||||
|
||||
oracle.legacy.fetchGasPricesOnChain().then((gasPrices: number) => {
|
||||
console.log(gasPrices) // 21
|
||||
})
|
||||
```
|
||||
|
||||
To get gasPrices from a chain outside of the application's chain list (Binance, Gnosis, Polygon, Avalanche), you should enter the rpcUrl into initial GasPriceOracle options\_
|
||||
|
||||
```typescript
|
||||
const defaultRpc = 'https://rpc.goerli.mudit.blog/' // goerli public rpcUrl
|
||||
const oracle = new GasPriceOracle({ defaultRpc, chainId: 5 })
|
||||
|
||||
oracle.gasPrices()
|
||||
```
|
||||
|
|
@ -0,0 +1,66 @@
|
|||
{
|
||||
"name": "@tornado/gas-price-oracle",
|
||||
"version": "0.5.2-p1",
|
||||
"description": "Gas Price Oracle library for Ethereum dApps.",
|
||||
"homepage": "https://git.tornado.ws/tornado-packages/gas-price-oracle",
|
||||
"main": "./lib/index.js",
|
||||
"module": "./lib/esm/index.js",
|
||||
"types": "./lib/index.d.ts",
|
||||
"repository": {
|
||||
"type": "git",
|
||||
"url": "https://git.tornado.ws/tornado-packages/archive-monorepo"
|
||||
},
|
||||
"scripts": {
|
||||
"test": "ts-mocha --timeout 30000 --paths 'src/tests/*.test.ts'",
|
||||
"build": "tsc && tsc-alias",
|
||||
"build:esm": "tsc -p tsconfig.esm.json && tsc-alias -p tsconfig.esm.json",
|
||||
"eslint": "eslint 'src/*.ts'",
|
||||
"prettier:check": "prettier --check . --config .prettierrc",
|
||||
"prettier:fix": "prettier --write . --config .prettierrc",
|
||||
"lint": "yarn eslint && yarn prettier:check",
|
||||
"prepare": "yarn build && yarn build:esm",
|
||||
"prepublishOnly": "yarn test && yarn lint"
|
||||
},
|
||||
"author": "Alexey Pertsev <alexey@peppersec.com> (https://peppersec.com)",
|
||||
"keywords": [
|
||||
"Gas",
|
||||
"Gas price",
|
||||
"Ethereum",
|
||||
"Oracle",
|
||||
"EIP-1559",
|
||||
"London Fork"
|
||||
],
|
||||
"license": "MIT",
|
||||
"devDependencies": {
|
||||
"@types/chai": "^4.2.11",
|
||||
"@types/chai-as-promised": "^7.1.3",
|
||||
"@types/mocha": "^7.0.2",
|
||||
"@types/mockery": "^1.4.29",
|
||||
"@types/node": "^14.0.5",
|
||||
"@typescript-eslint/eslint-plugin": "^4.4.1",
|
||||
"@typescript-eslint/parser": "^4.4.1",
|
||||
"chai": "^4.2.0",
|
||||
"chai-as-promised": "^7.1.1",
|
||||
"eslint": "^7.11.0",
|
||||
"eslint-config-prettier": "^6.13.0",
|
||||
"eslint-plugin-import": "^2.26.0",
|
||||
"eslint-plugin-node": "^11.1.0",
|
||||
"eslint-plugin-prettier": "^3.1.4",
|
||||
"eslint-plugin-promise": "^6.0.0",
|
||||
"mocha": "^7.2.0",
|
||||
"mockery": "^2.1.0",
|
||||
"prettier": "^2.1.2",
|
||||
"ts-mocha": "^10.0.0",
|
||||
"ts-node": "^8.10.1",
|
||||
"tsc-alias": "^1.6.11",
|
||||
"typescript": "^4.7.4"
|
||||
},
|
||||
"dependencies": {
|
||||
"axios": "^0.21.2",
|
||||
"bignumber.js": "^9.0.0",
|
||||
"node-cache": "^5.1.2"
|
||||
},
|
||||
"files": [
|
||||
"lib/**/*"
|
||||
]
|
||||
}
|
||||
|
|
@ -0,0 +1,10 @@
|
|||
import { OffChainOracles, OnChainOracles } from '@/services'
|
||||
|
||||
export const offChainOracles: OffChainOracles = {}
|
||||
|
||||
export const onChainOracles: OnChainOracles = {}
|
||||
|
||||
export default {
|
||||
offChainOracles,
|
||||
onChainOracles,
|
||||
}
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
import { OffChainOracle, OffChainOracles, OnChainOracles } from '@/services'
|
||||
|
||||
const avalancheGasStation: OffChainOracle = {
|
||||
name: 'avalancheGasStation',
|
||||
url: 'https://gavax.blockscan.com/gasapi.ashx?apikey=key&method=gasoracle',
|
||||
instantPropertyName: 'FastGasPrice',
|
||||
fastPropertyName: 'FastGasPrice',
|
||||
standardPropertyName: 'ProposeGasPrice',
|
||||
lowPropertyName: 'SafeGasPrice',
|
||||
denominator: 1,
|
||||
additionalDataProperty: 'result',
|
||||
}
|
||||
|
||||
export const offChainOracles: OffChainOracles = {
|
||||
avalancheGasStation,
|
||||
}
|
||||
|
||||
export const onChainOracles: OnChainOracles = {}
|
||||
|
||||
export default {
|
||||
offChainOracles,
|
||||
onChainOracles,
|
||||
}
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
import { OffChainOracle, OffChainOracles, OnChainOracles } from '@/services'
|
||||
|
||||
const ztake: OffChainOracle = {
|
||||
name: 'ztake',
|
||||
url: 'https://blockchains.ztake.org/api/h6WnmwNqw9CAJHzej5W4gD6LZ9n7v8EK/gasprice/bsc/',
|
||||
instantPropertyName: 'percentile_60',
|
||||
fastPropertyName: 'percentile_50',
|
||||
standardPropertyName: 'percentile_40',
|
||||
lowPropertyName: 'percentile_30',
|
||||
denominator: 1,
|
||||
additionalDataProperty: null,
|
||||
}
|
||||
|
||||
export const offChainOracles: OffChainOracles = {
|
||||
ztake,
|
||||
}
|
||||
|
||||
export const onChainOracles: OnChainOracles = {}
|
||||
|
||||
export default {
|
||||
offChainOracles,
|
||||
onChainOracles,
|
||||
}
|
||||
|
|
@ -0,0 +1,78 @@
|
|||
import bscOracles from './bsc'
|
||||
import xdaiOracles from './xdai'
|
||||
import avalancheOracles from './avax'
|
||||
import mainnetOracles from './mainnet'
|
||||
import polygonOracles from './polygon'
|
||||
import optimismOracles from './optimism'
|
||||
import arbitrumOracles from './arbitrum'
|
||||
|
||||
import { NetworksConfig } from '@/types'
|
||||
|
||||
export enum ChainId {
|
||||
MAINNET = 1,
|
||||
BSC = 56,
|
||||
XDAI = 100,
|
||||
POLYGON = 137,
|
||||
OPTIMISM = 10,
|
||||
ARBITRUM = 42161,
|
||||
AVAX = 43114,
|
||||
}
|
||||
|
||||
export const NETWORKS: Record<number, NetworksConfig> = {
|
||||
[ChainId.MAINNET]: {
|
||||
oracles: mainnetOracles,
|
||||
rpcUrl: 'https://api.mycryptoapi.com/eth',
|
||||
defaultGasPrice: 22,
|
||||
maxGasPrice: 1500,
|
||||
blocksCount: 10,
|
||||
percentile: 5,
|
||||
},
|
||||
[ChainId.BSC]: {
|
||||
oracles: bscOracles,
|
||||
rpcUrl: 'https://bsc-dataseed1.ninicoin.io',
|
||||
defaultGasPrice: 5,
|
||||
maxGasPrice: 200,
|
||||
blocksCount: 10,
|
||||
percentile: 5,
|
||||
},
|
||||
[ChainId.XDAI]: {
|
||||
oracles: xdaiOracles,
|
||||
rpcUrl: 'https://rpc.gnosischain.com',
|
||||
defaultGasPrice: 5,
|
||||
maxGasPrice: 200,
|
||||
blocksCount: 200,
|
||||
percentile: 5,
|
||||
},
|
||||
[ChainId.POLYGON]: {
|
||||
oracles: polygonOracles,
|
||||
rpcUrl: 'https://rpc-mainnet.maticvigil.com',
|
||||
defaultGasPrice: 75,
|
||||
maxGasPrice: 1000,
|
||||
blocksCount: 10,
|
||||
percentile: 5,
|
||||
},
|
||||
[ChainId.OPTIMISM]: {
|
||||
oracles: optimismOracles,
|
||||
rpcUrl: 'https://mainnet.optimism.io',
|
||||
defaultGasPrice: 0.001,
|
||||
maxGasPrice: 5,
|
||||
blocksCount: 10,
|
||||
percentile: 5,
|
||||
},
|
||||
[ChainId.ARBITRUM]: {
|
||||
oracles: arbitrumOracles,
|
||||
rpcUrl: 'https://arb1.arbitrum.io/rpc',
|
||||
defaultGasPrice: 3,
|
||||
maxGasPrice: 15,
|
||||
blocksCount: 10,
|
||||
percentile: 5,
|
||||
},
|
||||
[ChainId.AVAX]: {
|
||||
oracles: avalancheOracles,
|
||||
rpcUrl: 'https://api.avax.network/ext/bc/C/rpc',
|
||||
defaultGasPrice: 50,
|
||||
maxGasPrice: 1000,
|
||||
blocksCount: 10,
|
||||
percentile: 5,
|
||||
},
|
||||
}
|
||||
|
|
@ -0,0 +1,44 @@
|
|||
import { OffChainOracle, OffChainOracles, OnChainOracle, OnChainOracles } from '@/services'
|
||||
|
||||
const ethgasstation: OffChainOracle = {
|
||||
name: 'ethgasstation',
|
||||
url: 'https://ethgasstation.info/json/ethgasAPI.json',
|
||||
instantPropertyName: 'fastest',
|
||||
fastPropertyName: 'fast',
|
||||
standardPropertyName: 'average',
|
||||
lowPropertyName: 'safeLow',
|
||||
denominator: 10,
|
||||
additionalDataProperty: null,
|
||||
}
|
||||
|
||||
const etherchain: OffChainOracle = {
|
||||
name: 'etherchain',
|
||||
url: 'https://etherchain.org/api/gasnow',
|
||||
instantPropertyName: 'rapid',
|
||||
fastPropertyName: 'fast',
|
||||
standardPropertyName: 'standard',
|
||||
lowPropertyName: 'slow',
|
||||
denominator: 1e9,
|
||||
additionalDataProperty: 'data',
|
||||
}
|
||||
|
||||
const chainlink: OnChainOracle = {
|
||||
name: 'chainlink',
|
||||
callData: '0x50d25bcd',
|
||||
contract: '0x169E633A2D1E6c10dD91238Ba11c4A708dfEF37C',
|
||||
denominator: '1000000000',
|
||||
}
|
||||
|
||||
export const offChainOracles: OffChainOracles = {
|
||||
ethgasstation,
|
||||
etherchain,
|
||||
}
|
||||
|
||||
export const onChainOracles: OnChainOracles = {
|
||||
chainlink,
|
||||
}
|
||||
|
||||
export default {
|
||||
offChainOracles,
|
||||
onChainOracles,
|
||||
}
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
import { OffChainOracles, OnChainOracle, OnChainOracles } from '@/services'
|
||||
|
||||
export const offChainOracles: OffChainOracles = {}
|
||||
|
||||
const optimism: OnChainOracle = {
|
||||
name: 'optimism',
|
||||
callData: '0xfe173b97',
|
||||
denominator: '1000000000',
|
||||
contract: '0x420000000000000000000000000000000000000F',
|
||||
}
|
||||
export const onChainOracles: OnChainOracles = {
|
||||
optimism,
|
||||
}
|
||||
|
||||
export default {
|
||||
offChainOracles,
|
||||
onChainOracles,
|
||||
}
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
import { OffChainOracle, OffChainOracles, OnChainOracles } from '@/services'
|
||||
|
||||
const maticGasStation: OffChainOracle = {
|
||||
name: 'maticGasStation',
|
||||
url: 'https://gasstation-mainnet.matic.network',
|
||||
instantPropertyName: 'fastest',
|
||||
fastPropertyName: 'fast',
|
||||
standardPropertyName: 'standard',
|
||||
lowPropertyName: 'safeLow',
|
||||
denominator: 1,
|
||||
additionalDataProperty: null,
|
||||
}
|
||||
|
||||
export const offChainOracles: OffChainOracles = {
|
||||
maticGasStation,
|
||||
}
|
||||
|
||||
export const onChainOracles: OnChainOracles = {}
|
||||
|
||||
export default {
|
||||
offChainOracles,
|
||||
onChainOracles,
|
||||
}
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
import { OffChainOracle, OffChainOracles, OnChainOracles } from '@/services'
|
||||
|
||||
const blockscout: OffChainOracle = {
|
||||
name: 'blockscout',
|
||||
url: 'https://blockscout.com/xdai/mainnet/api/v1/gas-price-oracle',
|
||||
instantPropertyName: 'fast',
|
||||
fastPropertyName: 'average',
|
||||
standardPropertyName: 'slow',
|
||||
lowPropertyName: 'slow',
|
||||
denominator: 1,
|
||||
additionalDataProperty: null,
|
||||
}
|
||||
|
||||
export const offChainOracles: OffChainOracles = {
|
||||
blockscout,
|
||||
}
|
||||
|
||||
export const onChainOracles: OnChainOracles = {}
|
||||
|
||||
export default {
|
||||
offChainOracles,
|
||||
onChainOracles,
|
||||
}
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
import BigNumber from 'bignumber.js'
|
||||
|
||||
const GWEI = 1e9
|
||||
const DEFAULT_TIMEOUT = 10000
|
||||
|
||||
const ROUND_UP = 1
|
||||
const ROUND_DOWN = 2
|
||||
const GWEI_PRECISION = 9
|
||||
const INT_PRECISION = 0
|
||||
|
||||
const SUCCESS_STATUS = 200
|
||||
const BG_ZERO = new BigNumber(0)
|
||||
const PERCENT_MULTIPLIER = 100
|
||||
const DEFAULT_BLOCK_DURATION = 10
|
||||
|
||||
export {
|
||||
GWEI,
|
||||
DEFAULT_TIMEOUT,
|
||||
ROUND_UP,
|
||||
ROUND_DOWN,
|
||||
GWEI_PRECISION,
|
||||
INT_PRECISION,
|
||||
SUCCESS_STATUS,
|
||||
BG_ZERO,
|
||||
PERCENT_MULTIPLIER,
|
||||
DEFAULT_BLOCK_DURATION,
|
||||
}
|
||||
|
|
@ -0,0 +1 @@
|
|||
export * from '@/services/gas-price-oracle'
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
import NodeCache, { Options } from 'node-cache'
|
||||
|
||||
export class NodeJSCache<T> {
|
||||
private nodeCache: NodeCache
|
||||
constructor(params: Options) {
|
||||
this.nodeCache = new NodeCache(params)
|
||||
}
|
||||
|
||||
async get(key: string): Promise<T | undefined> {
|
||||
return await this.nodeCache.get<T>(key)
|
||||
}
|
||||
|
||||
async set(key: string, value: T): Promise<boolean> {
|
||||
return await this.nodeCache.set(key, value)
|
||||
}
|
||||
|
||||
async has(key: string): Promise<boolean> {
|
||||
return await this.nodeCache.has(key)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1 @@
|
|||
export * from './cacheNode'
|
||||
|
|
@ -0,0 +1,26 @@
|
|||
// How many blocks to consider for priority fee estimation
|
||||
import BigNumber from 'bignumber.js'
|
||||
import { EstimatedGasPrice } from './types'
|
||||
|
||||
const FEE_HISTORY_BLOCKS = 10
|
||||
// Which percentile of effective priority fees to include
|
||||
const FEE_HISTORY_PERCENTILE = 5
|
||||
|
||||
const DEFAULT_BASE_FEE = 20
|
||||
const DEFAULT_PRIORITY_FEE = 3
|
||||
const PRIORITY_FEE_INCREASE_BOUNDARY = 200 // %
|
||||
|
||||
const FALLBACK_ESTIMATE: EstimatedGasPrice = {
|
||||
baseFee: DEFAULT_BASE_FEE,
|
||||
maxPriorityFeePerGas: DEFAULT_PRIORITY_FEE,
|
||||
maxFeePerGas: new BigNumber(DEFAULT_PRIORITY_FEE).plus(DEFAULT_BASE_FEE).toNumber(),
|
||||
}
|
||||
|
||||
export {
|
||||
DEFAULT_BASE_FEE,
|
||||
FALLBACK_ESTIMATE,
|
||||
FEE_HISTORY_BLOCKS,
|
||||
DEFAULT_PRIORITY_FEE,
|
||||
FEE_HISTORY_PERCENTILE,
|
||||
PRIORITY_FEE_INCREASE_BOUNDARY,
|
||||
}
|
||||
|
|
@ -0,0 +1,159 @@
|
|||
import BigNumber from 'bignumber.js'
|
||||
|
||||
import { FeeHistory, Block } from '@/types'
|
||||
import { Config, EstimateOracle, EstimatedGasPrice, CalculateFeesParams, GasEstimationOptionsPayload } from './types'
|
||||
|
||||
import { ChainId, NETWORKS } from '@/config'
|
||||
import { RpcFetcher, NodeJSCache } from '@/services'
|
||||
import { findMax, fromNumberToHex, fromWeiToGwei, getMedian } from '@/utils'
|
||||
import { BG_ZERO, DEFAULT_BLOCK_DURATION, PERCENT_MULTIPLIER } from '@/constants'
|
||||
|
||||
import { DEFAULT_PRIORITY_FEE, PRIORITY_FEE_INCREASE_BOUNDARY, FEE_HISTORY_BLOCKS, FEE_HISTORY_PERCENTILE } from './constants'
|
||||
|
||||
// !!! MAKE SENSE ALL CALCULATIONS IN GWEI !!!
|
||||
export class Eip1559GasPriceOracle implements EstimateOracle {
|
||||
public configuration: Config = {
|
||||
shouldCache: false,
|
||||
chainId: ChainId.MAINNET,
|
||||
fallbackGasPrices: undefined,
|
||||
minPriority: DEFAULT_PRIORITY_FEE,
|
||||
blockTime: DEFAULT_BLOCK_DURATION,
|
||||
blocksCount: NETWORKS[ChainId.MAINNET].blocksCount,
|
||||
percentile: NETWORKS[ChainId.MAINNET].percentile,
|
||||
}
|
||||
private fetcher: RpcFetcher
|
||||
|
||||
private cache: NodeJSCache<EstimatedGasPrice>
|
||||
private FEES_KEY = (chainId: ChainId) => `estimate-fee-${chainId}`
|
||||
|
||||
constructor({ fetcher, ...options }: GasEstimationOptionsPayload) {
|
||||
this.fetcher = fetcher
|
||||
const chainId = options?.chainId || this.configuration.chainId
|
||||
this.configuration.blocksCount = NETWORKS[chainId]?.blocksCount || FEE_HISTORY_BLOCKS
|
||||
this.configuration.percentile = NETWORKS[chainId]?.percentile || FEE_HISTORY_PERCENTILE
|
||||
|
||||
if (options) {
|
||||
this.configuration = { ...this.configuration, ...options }
|
||||
}
|
||||
|
||||
this.cache = new NodeJSCache({ stdTTL: this.configuration.blockTime, useClones: false })
|
||||
}
|
||||
|
||||
public async estimateFees(fallbackGasPrices?: EstimatedGasPrice): Promise<EstimatedGasPrice> {
|
||||
try {
|
||||
const cacheKey = this.FEES_KEY(this.configuration.chainId)
|
||||
const cachedFees = await this.cache.get(cacheKey)
|
||||
|
||||
if (cachedFees) {
|
||||
return cachedFees
|
||||
}
|
||||
|
||||
const { data: latestBlock } = await this.fetcher.makeRpcCall<{ result: Block }>({
|
||||
method: 'eth_getBlockByNumber',
|
||||
params: ['latest', false],
|
||||
})
|
||||
|
||||
if (!latestBlock.result.baseFeePerGas) {
|
||||
throw new Error('An error occurred while fetching current base fee, falling back')
|
||||
}
|
||||
|
||||
const baseFee = fromWeiToGwei(latestBlock.result.baseFeePerGas)
|
||||
|
||||
const blockCount = fromNumberToHex(this.configuration.blocksCount)
|
||||
const rewardPercentiles: number[] = [this.configuration.percentile]
|
||||
|
||||
const { data } = await this.fetcher.makeRpcCall<{ result: FeeHistory }>({
|
||||
method: 'eth_feeHistory',
|
||||
params: [blockCount, 'latest', rewardPercentiles],
|
||||
})
|
||||
|
||||
const fees = await this.calculateFees({ baseFee, feeHistory: data.result })
|
||||
if (this.configuration.shouldCache) {
|
||||
await this.cache.set(cacheKey, fees)
|
||||
}
|
||||
|
||||
return fees
|
||||
} catch (err) {
|
||||
if (fallbackGasPrices) {
|
||||
return fallbackGasPrices
|
||||
}
|
||||
if (this.configuration.fallbackGasPrices) {
|
||||
return this.configuration.fallbackGasPrices
|
||||
}
|
||||
throw err
|
||||
}
|
||||
}
|
||||
|
||||
private calculatePriorityFeeEstimate(feeHistory?: FeeHistory) {
|
||||
if (!feeHistory) {
|
||||
return null
|
||||
}
|
||||
|
||||
const rewards = feeHistory.reward
|
||||
?.map((r) => fromWeiToGwei(r[0]))
|
||||
.filter((r) => r.isGreaterThan(0))
|
||||
.sort()
|
||||
|
||||
if (!rewards) {
|
||||
return null
|
||||
}
|
||||
|
||||
// Calculate percentage increases from between ordered list of fees
|
||||
const percentageIncreases = rewards.reduce<BigNumber[]>((acc, curr, i, arr) => {
|
||||
if (i !== arr.length - 1) {
|
||||
const next = arr[i + 1]
|
||||
const percentageIncrease = next.minus(curr).dividedBy(curr).multipliedBy(PERCENT_MULTIPLIER)
|
||||
acc.push(percentageIncrease)
|
||||
}
|
||||
|
||||
return acc
|
||||
}, [])
|
||||
|
||||
const { highest, index } = findMax(percentageIncreases)
|
||||
// If we have big increased in value, we could be considering "outliers" in our estimate
|
||||
// Skip the low elements and take a new median
|
||||
const values =
|
||||
highest.isGreaterThanOrEqualTo(PRIORITY_FEE_INCREASE_BOUNDARY) && index >= getMedian(rewards)
|
||||
? rewards.slice(index)
|
||||
: rewards
|
||||
|
||||
return values[getMedian(values)]
|
||||
}
|
||||
|
||||
private async getPriorityFromChain(feeHistory?: FeeHistory) {
|
||||
try {
|
||||
const { data } = await this.fetcher.makeRpcCall<{ result: string }>({
|
||||
method: 'eth_maxPriorityFeePerGas',
|
||||
params: [],
|
||||
})
|
||||
|
||||
return fromWeiToGwei(data.result)
|
||||
} catch (err) {
|
||||
return this.calculatePriorityFeeEstimate(feeHistory)
|
||||
}
|
||||
}
|
||||
|
||||
private async calculateFees({ baseFee, feeHistory }: CalculateFeesParams): Promise<EstimatedGasPrice> {
|
||||
const estimatedPriorityFee = await this.getPriorityFromChain(feeHistory)
|
||||
|
||||
const { highest: maxPriorityFeePerGas } = findMax([
|
||||
estimatedPriorityFee ?? BG_ZERO,
|
||||
new BigNumber(this.configuration.minPriority),
|
||||
])
|
||||
const maxFeePerGas = baseFee.plus(maxPriorityFeePerGas)
|
||||
|
||||
if (this.checkIsGreaterThanMax(maxFeePerGas) || this.checkIsGreaterThanMax(maxPriorityFeePerGas)) {
|
||||
throw new Error('Estimated gas fee was much higher than expected, erroring')
|
||||
}
|
||||
|
||||
return {
|
||||
baseFee: baseFee.toNumber(),
|
||||
maxFeePerGas: maxFeePerGas.toNumber(),
|
||||
maxPriorityFeePerGas: maxPriorityFeePerGas.toNumber(),
|
||||
}
|
||||
}
|
||||
|
||||
private checkIsGreaterThanMax(value: BigNumber): boolean {
|
||||
return value.isGreaterThanOrEqualTo(NETWORKS[this.configuration.chainId]?.maxGasPrice) || false
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,2 @@
|
|||
export * from './eip1559'
|
||||
export * from './types'
|
||||
|
|
@ -0,0 +1,39 @@
|
|||
import BigNumber from 'bignumber.js'
|
||||
|
||||
import { FeeHistory } from '@/types'
|
||||
import { RpcFetcher } from '@/services'
|
||||
|
||||
export type EstimatedGasPrice = {
|
||||
maxFeePerGas: number
|
||||
baseFee: number | undefined
|
||||
maxPriorityFeePerGas: number
|
||||
}
|
||||
|
||||
export type EstimateFeesParams = {
|
||||
blocksCount: number
|
||||
percentile: number
|
||||
}
|
||||
|
||||
export type CalculateFeesParams = {
|
||||
baseFee: BigNumber
|
||||
feeHistory?: FeeHistory
|
||||
}
|
||||
|
||||
export type Options = {
|
||||
chainId?: number
|
||||
blocksCount?: number
|
||||
percentile?: number
|
||||
blockTime?: number
|
||||
shouldCache?: boolean
|
||||
fallbackGasPrices: EstimatedGasPrice | undefined
|
||||
}
|
||||
|
||||
export type GasEstimationOptionsPayload = Options & {
|
||||
fetcher: RpcFetcher
|
||||
}
|
||||
|
||||
export type Config = Required<Options> & { fallbackGasPrices?: EstimatedGasPrice; minPriority: number }
|
||||
export abstract class EstimateOracle {
|
||||
public configuration: Config
|
||||
public abstract estimateFees(fallbackGasPrices?: EstimatedGasPrice): Promise<EstimatedGasPrice>
|
||||
}
|
||||
|
|
@ -0,0 +1,96 @@
|
|||
import {
|
||||
GasOracleOptions,
|
||||
GasPricesWithEstimateInput,
|
||||
GasPriceWithEstimate,
|
||||
GetGasPriceInput,
|
||||
GetTxGasParamsInput,
|
||||
GetTxGasParamsRes,
|
||||
OracleProvider,
|
||||
} from './types'
|
||||
|
||||
import { ChainId, NETWORKS } from '@/config'
|
||||
import { DEFAULT_TIMEOUT } from '@/constants'
|
||||
import { bumpOnPercent, fromGweiToWeiHex } from '@/utils'
|
||||
|
||||
import {
|
||||
RpcFetcher,
|
||||
GasPrice,
|
||||
LegacyOracle,
|
||||
EstimateOracle,
|
||||
EstimatedGasPrice,
|
||||
LegacyGasPriceOracle,
|
||||
Eip1559GasPriceOracle,
|
||||
} from '@/services'
|
||||
|
||||
export class GasPriceOracle implements OracleProvider {
|
||||
public eip1559: EstimateOracle
|
||||
public legacy: LegacyOracle
|
||||
public fetcher: RpcFetcher
|
||||
private chainId: ChainId
|
||||
public constructor(options?: GasOracleOptions) {
|
||||
const timeout = options?.timeout ?? DEFAULT_TIMEOUT
|
||||
this.chainId = options?.chainId || ChainId.MAINNET
|
||||
const defaultRpc = options?.defaultRpc || NETWORKS[this.chainId].rpcUrl
|
||||
|
||||
this.fetcher = new RpcFetcher(defaultRpc, timeout)
|
||||
|
||||
const { gasPrices, estimated } = options?.fallbackGasPrices || {}
|
||||
|
||||
const payload = { ...options, fetcher: this.fetcher }
|
||||
this.legacy = new LegacyGasPriceOracle({
|
||||
...payload,
|
||||
fallbackGasPrices: gasPrices,
|
||||
})
|
||||
|
||||
this.eip1559 = new Eip1559GasPriceOracle({
|
||||
...payload,
|
||||
fallbackGasPrices: estimated,
|
||||
})
|
||||
}
|
||||
|
||||
public async gasPrices(payload: GetGasPriceInput = {}): Promise<GasPrice | EstimatedGasPrice> {
|
||||
const { fallbackGasPrices, shouldGetMedian, isLegacy = false } = payload
|
||||
if (isLegacy) {
|
||||
return await this.legacy.gasPrices(fallbackGasPrices?.gasPrices, shouldGetMedian)
|
||||
}
|
||||
try {
|
||||
return await this.eip1559.estimateFees(fallbackGasPrices?.estimated)
|
||||
} catch {
|
||||
return await this.legacy.gasPrices(fallbackGasPrices?.gasPrices, shouldGetMedian)
|
||||
}
|
||||
}
|
||||
|
||||
public async getTxGasParams(payload: GetTxGasParamsInput = {}): Promise<GetTxGasParamsRes> {
|
||||
const { fallbackGasPrices, shouldGetMedian, isLegacy = false, bumpPercent = 0, legacySpeed = 'fast' } = payload
|
||||
|
||||
if (isLegacy) {
|
||||
const legacyGasPrice = await this.legacy.gasPrices(fallbackGasPrices?.gasPrices, shouldGetMedian)
|
||||
|
||||
return { gasPrice: fromGweiToWeiHex(bumpOnPercent(legacyGasPrice[legacySpeed], bumpPercent)) }
|
||||
}
|
||||
|
||||
try {
|
||||
const eipParams = await this.eip1559.estimateFees(fallbackGasPrices?.estimated)
|
||||
return {
|
||||
maxFeePerGas: fromGweiToWeiHex(bumpOnPercent(eipParams.maxFeePerGas, bumpPercent)),
|
||||
maxPriorityFeePerGas: fromGweiToWeiHex(bumpOnPercent(eipParams.maxPriorityFeePerGas, bumpPercent)),
|
||||
}
|
||||
} catch {
|
||||
const legacyGasPrice = await this.legacy.gasPrices(fallbackGasPrices?.gasPrices, shouldGetMedian)
|
||||
|
||||
return { gasPrice: fromGweiToWeiHex(bumpOnPercent(legacyGasPrice[legacySpeed], bumpPercent)) }
|
||||
}
|
||||
}
|
||||
|
||||
public async gasPricesWithEstimate(payload: GasPricesWithEstimateInput = {}): Promise<GasPriceWithEstimate> {
|
||||
const { fallbackGasPrices, shouldGetMedian } = payload
|
||||
|
||||
const estimate = await this.eip1559.estimateFees(fallbackGasPrices?.estimated)
|
||||
const gasPrices = await this.legacy.gasPrices(fallbackGasPrices?.gasPrices, shouldGetMedian)
|
||||
|
||||
return {
|
||||
estimate,
|
||||
gasPrices,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,2 @@
|
|||
export * from './gas-price-oracle'
|
||||
export * from './types'
|
||||
|
|
@ -0,0 +1,57 @@
|
|||
import { RpcFetcher, GasPrice, LegacyOracle, EstimatedGasPrice, EstimateOracle, GasPriceKey } from '@/services'
|
||||
|
||||
export type GetTxGasParamsInput = GetGasPriceInput & {
|
||||
bumpPercent?: number
|
||||
legacySpeed?: GasPriceKey
|
||||
}
|
||||
|
||||
export type GetTxGasParamsRes =
|
||||
| {
|
||||
gasPrice: string
|
||||
}
|
||||
| {
|
||||
maxFeePerGas: string
|
||||
maxPriorityFeePerGas: string
|
||||
}
|
||||
|
||||
export type GetGasPriceInput = {
|
||||
isLegacy?: boolean
|
||||
shouldGetMedian?: boolean
|
||||
fallbackGasPrices?: FallbackGasPrices
|
||||
}
|
||||
|
||||
export type FallbackGasPrices = {
|
||||
gasPrices?: GasPrice
|
||||
estimated?: EstimatedGasPrice
|
||||
}
|
||||
|
||||
export type GasPricesWithEstimateInput = {
|
||||
shouldGetMedian?: boolean
|
||||
fallbackGasPrices?: FallbackGasPrices
|
||||
}
|
||||
|
||||
export type GasOracleOptions = {
|
||||
chainId?: number
|
||||
timeout?: number
|
||||
defaultRpc?: string
|
||||
blocksCount?: number
|
||||
percentile?: number
|
||||
blockTime?: number
|
||||
shouldCache?: boolean
|
||||
minPriority?: number
|
||||
fallbackGasPrices?: FallbackGasPrices
|
||||
}
|
||||
|
||||
export type GasPriceWithEstimate = {
|
||||
gasPrices: GasPrice
|
||||
estimate: EstimatedGasPrice
|
||||
}
|
||||
|
||||
export interface OracleProvider {
|
||||
eip1559: EstimateOracle
|
||||
legacy: LegacyOracle
|
||||
fetcher: RpcFetcher
|
||||
gasPrices: (payload: GetGasPriceInput) => Promise<GasPrice | EstimatedGasPrice>
|
||||
gasPricesWithEstimate: (payload: GasPricesWithEstimateInput) => Promise<GasPriceWithEstimate>
|
||||
getTxGasParams: (payload: GetTxGasParamsInput) => Promise<GetTxGasParamsRes>
|
||||
}
|
||||
|
|
@ -0,0 +1,7 @@
|
|||
export * from './gas-price-oracle'
|
||||
|
||||
export * from './gas-estimation'
|
||||
export * from './legacy-gas-price'
|
||||
|
||||
export * from './cacher'
|
||||
export * from './rpcFetcher'
|
||||
|
|
@ -0,0 +1,10 @@
|
|||
const DEFAULT_GAS_PRICE = { instant: 0, fast: 0, standard: 0, low: 0 }
|
||||
|
||||
const MULTIPLIERS = {
|
||||
instant: 1.3,
|
||||
fast: 1.2,
|
||||
standard: 1.1,
|
||||
low: 1,
|
||||
}
|
||||
|
||||
export { MULTIPLIERS, DEFAULT_GAS_PRICE }
|
||||
|
|
@ -0,0 +1,2 @@
|
|||
export * from './legacy'
|
||||
export * from './types'
|
||||
|
|
@ -0,0 +1,317 @@
|
|||
import axios from 'axios'
|
||||
import BigNumber from 'bignumber.js'
|
||||
|
||||
import {
|
||||
GasPrice,
|
||||
GasPriceKey,
|
||||
LegacyOracle,
|
||||
OnChainOracle,
|
||||
OffChainOracle,
|
||||
LegacyOptions,
|
||||
OnChainOracles,
|
||||
OffChainOracles,
|
||||
LegacyOptionsPayload,
|
||||
GetGasPriceFromRespInput,
|
||||
} from './types'
|
||||
|
||||
import { ChainId, NETWORKS } from '@/config'
|
||||
import { RpcFetcher, NodeJSCache } from '@/services'
|
||||
import { GWEI, DEFAULT_TIMEOUT, GWEI_PRECISION, DEFAULT_BLOCK_DURATION } from '@/constants'
|
||||
|
||||
import { MULTIPLIERS, DEFAULT_GAS_PRICE } from './constants'
|
||||
|
||||
export class LegacyGasPriceOracle implements LegacyOracle {
|
||||
static getMedianGasPrice(gasPrices: GasPrice[]): GasPrice {
|
||||
const medianGasPrice: GasPrice = DEFAULT_GAS_PRICE
|
||||
|
||||
const results: Record<GasPriceKey, number[]> = {
|
||||
instant: [],
|
||||
fast: [],
|
||||
standard: [],
|
||||
low: [],
|
||||
}
|
||||
|
||||
for (const gasPrice of gasPrices) {
|
||||
results.instant.push(gasPrice.instant)
|
||||
results.fast.push(gasPrice.fast)
|
||||
results.standard.push(gasPrice.standard)
|
||||
results.low.push(gasPrice.low)
|
||||
}
|
||||
|
||||
for (const type of Object.keys(medianGasPrice) as (keyof GasPrice)[]) {
|
||||
const allPrices = results[type].sort((a, b) => a - b)
|
||||
if (allPrices.length === 1) {
|
||||
medianGasPrice[type] = allPrices[0]
|
||||
continue
|
||||
} else if (allPrices.length === 0) {
|
||||
continue
|
||||
}
|
||||
const isEven = allPrices.length % 2 === 0
|
||||
const middle = Math.floor(allPrices.length / 2)
|
||||
medianGasPrice[type] = isEven ? (allPrices[middle - 1] + allPrices[middle]) / 2.0 : allPrices[middle]
|
||||
}
|
||||
|
||||
return LegacyGasPriceOracle.normalize(medianGasPrice)
|
||||
}
|
||||
|
||||
static getMultipliedPrices(gasPrice: number): GasPrice {
|
||||
return {
|
||||
instant: gasPrice * MULTIPLIERS.instant,
|
||||
fast: gasPrice * MULTIPLIERS.fast,
|
||||
standard: gasPrice * MULTIPLIERS.standard,
|
||||
low: gasPrice * MULTIPLIERS.low,
|
||||
}
|
||||
}
|
||||
|
||||
static normalize(_gas: GasPrice): GasPrice {
|
||||
const format = {
|
||||
groupSeparator: '',
|
||||
decimalSeparator: '.',
|
||||
}
|
||||
|
||||
const gas: GasPrice = { ..._gas }
|
||||
for (const type of Object.keys(gas) as (keyof GasPrice)[]) {
|
||||
gas[type] = Number(new BigNumber(gas[type]).toFormat(GWEI_PRECISION, format))
|
||||
}
|
||||
|
||||
return gas
|
||||
}
|
||||
|
||||
static getCategorize(gasPrice: number): GasPrice {
|
||||
return LegacyGasPriceOracle.normalize(LegacyGasPriceOracle.getMultipliedPrices(gasPrice))
|
||||
}
|
||||
|
||||
static getGasPriceFromResponse(payload: GetGasPriceFromRespInput): number {
|
||||
const { response, fetcherName, denominator = GWEI } = payload
|
||||
let fastGasPrice = new BigNumber(response)
|
||||
if (fastGasPrice.isZero()) {
|
||||
throw new Error(`${fetcherName} provides corrupted values`)
|
||||
}
|
||||
fastGasPrice = fastGasPrice.div(denominator)
|
||||
return fastGasPrice.toNumber()
|
||||
}
|
||||
|
||||
public lastGasPrice: GasPrice
|
||||
public onChainOracles: OnChainOracles = {}
|
||||
public offChainOracles: OffChainOracles = {}
|
||||
public configuration: Required<LegacyOptions> = {
|
||||
shouldCache: false,
|
||||
chainId: ChainId.MAINNET,
|
||||
timeout: DEFAULT_TIMEOUT,
|
||||
blockTime: DEFAULT_BLOCK_DURATION,
|
||||
defaultRpc: NETWORKS[ChainId.MAINNET].rpcUrl,
|
||||
fallbackGasPrices: LegacyGasPriceOracle.getMultipliedPrices(NETWORKS[ChainId.MAINNET].defaultGasPrice),
|
||||
}
|
||||
|
||||
private readonly fetcher: RpcFetcher
|
||||
|
||||
private cache: NodeJSCache<GasPrice>
|
||||
private LEGACY_KEY = (chainId: ChainId) => `legacy-fee-${chainId}`
|
||||
|
||||
constructor({ fetcher, ...options }: LegacyOptionsPayload) {
|
||||
this.fetcher = fetcher
|
||||
if (options) {
|
||||
this.configuration = { ...this.configuration, ...options }
|
||||
}
|
||||
|
||||
const { defaultGasPrice } = NETWORKS[ChainId.MAINNET]
|
||||
const fallbackGasPrices = this.configuration.fallbackGasPrices || LegacyGasPriceOracle.getMultipliedPrices(defaultGasPrice)
|
||||
this.configuration.fallbackGasPrices = LegacyGasPriceOracle.normalize(fallbackGasPrices)
|
||||
|
||||
const network = NETWORKS[this.configuration.chainId]?.oracles
|
||||
if (network) {
|
||||
this.offChainOracles = { ...network.offChainOracles }
|
||||
this.onChainOracles = { ...network.onChainOracles }
|
||||
}
|
||||
|
||||
this.cache = new NodeJSCache({ stdTTL: this.configuration.blockTime, useClones: false })
|
||||
}
|
||||
|
||||
public addOffChainOracle(oracle: OffChainOracle): void {
|
||||
this.offChainOracles[oracle.name] = oracle
|
||||
}
|
||||
|
||||
public addOnChainOracle(oracle: OnChainOracle): void {
|
||||
this.onChainOracles[oracle.name] = oracle
|
||||
}
|
||||
|
||||
public removeOnChainOracle(name: string): void {
|
||||
delete this.onChainOracles[name]
|
||||
}
|
||||
|
||||
public removeOffChainOracle(name: string): void {
|
||||
delete this.offChainOracles[name]
|
||||
}
|
||||
|
||||
public async fetchGasPricesOnChain(): Promise<number> {
|
||||
for (const oracle of Object.values(this.onChainOracles)) {
|
||||
const { name, callData, contract, denominator, rpc } = oracle
|
||||
|
||||
try {
|
||||
const response = await this.fetcher.makeRpcCall<{ result: string | number }>({
|
||||
rpc,
|
||||
method: 'eth_call',
|
||||
params: [{ data: callData, to: contract }, 'latest'],
|
||||
})
|
||||
|
||||
if (response.status === 200) {
|
||||
return LegacyGasPriceOracle.getGasPriceFromResponse({
|
||||
denominator,
|
||||
fetcherName: `${name} oracle`,
|
||||
response: response.data.result,
|
||||
})
|
||||
}
|
||||
throw new Error(`Fetch gasPrice from ${name} oracle failed. Trying another one...`)
|
||||
} catch (e) {
|
||||
console.error(e.message)
|
||||
}
|
||||
}
|
||||
throw new Error('All oracles are down. Probably a network error.')
|
||||
}
|
||||
|
||||
public async fetchGasPriceFromRpc(): Promise<number> {
|
||||
try {
|
||||
const { status, data } = await this.fetcher.makeRpcCall<{ result: string | number }>({
|
||||
params: [],
|
||||
method: 'eth_gasPrice',
|
||||
})
|
||||
|
||||
if (status === 200) {
|
||||
return LegacyGasPriceOracle.getGasPriceFromResponse({
|
||||
fetcherName: 'Default RPC',
|
||||
response: data.result,
|
||||
})
|
||||
}
|
||||
|
||||
throw new Error(`Fetch gasPrice from default RPC failed..`)
|
||||
} catch (e) {
|
||||
console.error(e.message)
|
||||
throw new Error('Default RPC is down. Probably a network error.')
|
||||
}
|
||||
}
|
||||
|
||||
public async fetchGasPricesOffChain(shouldGetMedian = true): Promise<GasPrice> {
|
||||
if (shouldGetMedian) {
|
||||
return await this.fetchMedianGasPriceOffChain()
|
||||
}
|
||||
|
||||
for (const oracle of Object.values(this.offChainOracles)) {
|
||||
try {
|
||||
return await this.askOracle(oracle)
|
||||
} catch (e) {
|
||||
console.info(`${oracle} has error - `, e.message)
|
||||
continue
|
||||
}
|
||||
}
|
||||
throw new Error('All oracles are down. Probably a network error.')
|
||||
}
|
||||
|
||||
public async fetchMedianGasPriceOffChain(): Promise<GasPrice> {
|
||||
const promises: Promise<GasPrice>[] = []
|
||||
|
||||
for (const oracle of Object.values(this.offChainOracles) as OffChainOracle[]) {
|
||||
promises.push(this.askOracle(oracle))
|
||||
}
|
||||
|
||||
const settledPromises = await Promise.allSettled(promises)
|
||||
|
||||
const allGasPrices = settledPromises.reduce((acc: GasPrice[], result) => {
|
||||
if (result.status === 'fulfilled') {
|
||||
acc.push(result.value)
|
||||
return acc
|
||||
}
|
||||
return acc
|
||||
}, [])
|
||||
|
||||
if (allGasPrices.length === 0) {
|
||||
throw new Error('All oracles are down. Probably a network error.')
|
||||
}
|
||||
|
||||
return LegacyGasPriceOracle.getMedianGasPrice(allGasPrices)
|
||||
}
|
||||
|
||||
public async gasPrices(fallbackGasPrices?: GasPrice, shouldGetMedian = true): Promise<GasPrice> {
|
||||
if (!this.lastGasPrice) {
|
||||
this.lastGasPrice = fallbackGasPrices || this.configuration.fallbackGasPrices
|
||||
}
|
||||
|
||||
const cacheKey = this.LEGACY_KEY(this.configuration.chainId)
|
||||
const cachedFees = await this.cache.get(cacheKey)
|
||||
|
||||
if (cachedFees) {
|
||||
return cachedFees
|
||||
}
|
||||
|
||||
if (Object.keys(this.offChainOracles).length > 0) {
|
||||
try {
|
||||
this.lastGasPrice = await this.fetchGasPricesOffChain(shouldGetMedian)
|
||||
if (this.configuration.shouldCache) {
|
||||
await this.cache.set(cacheKey, this.lastGasPrice)
|
||||
}
|
||||
return this.lastGasPrice
|
||||
} catch (e) {
|
||||
console.error('Failed to fetch gas prices from offchain oracles...')
|
||||
}
|
||||
}
|
||||
|
||||
if (Object.keys(this.onChainOracles).length > 0) {
|
||||
try {
|
||||
const fastGas = await this.fetchGasPricesOnChain()
|
||||
|
||||
this.lastGasPrice = LegacyGasPriceOracle.getCategorize(fastGas)
|
||||
if (this.configuration.shouldCache) {
|
||||
await this.cache.set(cacheKey, this.lastGasPrice)
|
||||
}
|
||||
return this.lastGasPrice
|
||||
} catch (e) {
|
||||
console.error('Failed to fetch gas prices from onchain oracles...')
|
||||
}
|
||||
}
|
||||
|
||||
try {
|
||||
const fastGas = await this.fetchGasPriceFromRpc()
|
||||
|
||||
this.lastGasPrice = LegacyGasPriceOracle.getCategorize(fastGas)
|
||||
if (this.configuration.shouldCache) {
|
||||
await this.cache.set(cacheKey, this.lastGasPrice)
|
||||
}
|
||||
return this.lastGasPrice
|
||||
} catch (e) {
|
||||
console.error('Failed to fetch gas prices from default RPC. Last known gas will be returned')
|
||||
}
|
||||
return LegacyGasPriceOracle.normalize(this.lastGasPrice)
|
||||
}
|
||||
|
||||
public async askOracle(oracle: OffChainOracle): Promise<GasPrice> {
|
||||
const {
|
||||
url,
|
||||
name,
|
||||
denominator,
|
||||
lowPropertyName,
|
||||
fastPropertyName,
|
||||
instantPropertyName,
|
||||
standardPropertyName,
|
||||
additionalDataProperty,
|
||||
} = oracle
|
||||
|
||||
const response = await axios.get(url, { timeout: this.configuration.timeout })
|
||||
|
||||
if (response.status === 200) {
|
||||
const gas = additionalDataProperty ? response.data[additionalDataProperty] : response.data
|
||||
|
||||
if (Number(gas[fastPropertyName]) === 0) {
|
||||
throw new Error(`${name} oracle provides corrupted values`)
|
||||
}
|
||||
|
||||
const gasPrices: GasPrice = {
|
||||
instant: parseFloat(gas[instantPropertyName]) / denominator,
|
||||
fast: parseFloat(gas[fastPropertyName]) / denominator,
|
||||
standard: parseFloat(gas[standardPropertyName]) / denominator,
|
||||
low: parseFloat(gas[lowPropertyName]) / denominator,
|
||||
}
|
||||
return LegacyGasPriceOracle.normalize(gasPrices)
|
||||
} else {
|
||||
throw new Error(`Fetch gasPrice from ${name} oracle failed. Trying another one...`)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,80 @@
|
|||
import { RpcFetcher } from '@/services'
|
||||
|
||||
export type OffChainOracle = {
|
||||
url: string
|
||||
name: string
|
||||
denominator: number
|
||||
lowPropertyName: string
|
||||
fastPropertyName: string
|
||||
instantPropertyName: string
|
||||
standardPropertyName: string
|
||||
additionalDataProperty: string | null
|
||||
}
|
||||
|
||||
export type OffChainOracles = Record<string, OffChainOracle>
|
||||
|
||||
export type OnChainOracle = {
|
||||
name: string
|
||||
rpc?: string
|
||||
contract: string
|
||||
callData: string
|
||||
denominator: string
|
||||
}
|
||||
|
||||
export type OnChainOracles = Record<string, OnChainOracle>
|
||||
|
||||
export type AllOracles = {
|
||||
onChainOracles: OnChainOracles
|
||||
offChainOracles: OffChainOracles
|
||||
}
|
||||
|
||||
export type NetworkConfig = Record<number, AllOracles>
|
||||
|
||||
export type GasPriceKey = 'instant' | 'fast' | 'standard' | 'low'
|
||||
export type GasPrice = Record<GasPriceKey, number>
|
||||
|
||||
export type LegacyOptions = {
|
||||
chainId?: number
|
||||
timeout?: number
|
||||
blockTime?: number
|
||||
defaultRpc?: string
|
||||
shouldCache?: boolean
|
||||
fallbackGasPrices?: GasPrice
|
||||
}
|
||||
|
||||
export type LegacyOptionsPayload = LegacyOptions & {
|
||||
fetcher: RpcFetcher
|
||||
}
|
||||
|
||||
export type GetGasPriceFromRespInput = {
|
||||
fetcherName: string
|
||||
response: string | number
|
||||
denominator?: number | string
|
||||
}
|
||||
|
||||
type Config = Required<LegacyOptions>
|
||||
|
||||
export abstract class LegacyOracle {
|
||||
static normalize: (_gas: GasPrice) => GasPrice
|
||||
static getCategorize: (gasPrice: number) => GasPrice
|
||||
static getMultipliedPrices: (gasPrice: number) => GasPrice
|
||||
static getMedianGasPrice: (gasPrices: GasPrice[]) => GasPrice
|
||||
static getGasPriceFromResponse: (payload: GetGasPriceFromRespInput) => Promise<number>
|
||||
|
||||
public configuration: Config
|
||||
public lastGasPrice: GasPrice
|
||||
public onChainOracles: OnChainOracles
|
||||
public offChainOracles: OffChainOracles
|
||||
|
||||
public abstract removeOnChainOracle(name: string): void
|
||||
public abstract removeOffChainOracle(name: string): void
|
||||
public abstract addOnChainOracle(oracle: OnChainOracle): void
|
||||
public abstract addOffChainOracle(oracle: OffChainOracle): void
|
||||
|
||||
public fetchGasPriceFromRpc: () => Promise<number>
|
||||
public fetchGasPricesOnChain: () => Promise<number>
|
||||
public fetchMedianGasPriceOffChain: () => Promise<GasPrice>
|
||||
public askOracle: (oracle: OffChainOracle) => Promise<GasPrice>
|
||||
public fetchGasPricesOffChain: (shouldGetMedian?: boolean) => Promise<GasPrice>
|
||||
public gasPrices: (fallbackGasPrices?: GasPrice, shouldGetMedian?: boolean) => Promise<GasPrice>
|
||||
}
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
import axios, { AxiosResponse } from 'axios'
|
||||
import { MakeRpcCallInput } from './types'
|
||||
|
||||
export class RpcFetcher {
|
||||
private readonly rpc: string
|
||||
private readonly timeout: number
|
||||
|
||||
constructor(rpc: string, timeout: number) {
|
||||
this.rpc = rpc
|
||||
this.timeout = timeout
|
||||
}
|
||||
|
||||
public async makeRpcCall<R>({ rpc, timeout, method, params }: MakeRpcCallInput): Promise<AxiosResponse<R>> {
|
||||
const body = {
|
||||
method,
|
||||
id: 1337,
|
||||
jsonrpc: '2.0',
|
||||
params: params,
|
||||
}
|
||||
|
||||
return await axios.post<R>(rpc || this.rpc, body, { timeout: timeout || this.timeout })
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,2 @@
|
|||
export * from './fetcher'
|
||||
export * from './types'
|
||||
|
|
@ -0,0 +1,7 @@
|
|||
export type Params = (string | number | number[] | Record<string, string | number | boolean> | boolean)[]
|
||||
export type MakeRpcCallInput = {
|
||||
rpc?: string
|
||||
method: string
|
||||
timeout?: number
|
||||
params: Params
|
||||
}
|
||||
|
|
@ -0,0 +1,134 @@
|
|||
/* eslint-disable @typescript-eslint/no-var-requires */
|
||||
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
|
||||
// @ts-ignore
|
||||
import chai from 'chai'
|
||||
import BigNumber from 'bignumber.js'
|
||||
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
|
||||
// @ts-ignore
|
||||
import mockery from 'mockery'
|
||||
import { before, describe } from 'mocha'
|
||||
|
||||
import { GWEI_PRECISION } from '@/constants'
|
||||
import { GasPriceOracle, GasPrice } from '@/services'
|
||||
|
||||
chai.use(require('chai-as-promised'))
|
||||
chai.should()
|
||||
|
||||
let oracle = new GasPriceOracle()
|
||||
|
||||
before('before', async () => {
|
||||
const gasPrice = await oracle.legacy.gasPrices()
|
||||
console.log('legacy gasPrice - ', { gasPrice })
|
||||
})
|
||||
|
||||
before('before', function () {
|
||||
const axiosMock = {
|
||||
get: () => {
|
||||
throw new Error('axios GET method is mocked for tests')
|
||||
},
|
||||
post: () => {
|
||||
throw new Error('axios POST method is mocked for tests')
|
||||
},
|
||||
}
|
||||
mockery.registerMock('axios', axiosMock)
|
||||
})
|
||||
|
||||
beforeEach('beforeEach', function () {
|
||||
oracle = new GasPriceOracle()
|
||||
})
|
||||
|
||||
const INJECTED_CHAIN_ID = 5
|
||||
const INJECTED_RPC_URL = 'https://rpc.goerli.mudit.blog/'
|
||||
|
||||
describe('complex test', function () {
|
||||
describe('fetching data', function () {
|
||||
describe('should work with unexpected chainId', function () {
|
||||
// it('legacy', async function () {
|
||||
// const newOracle = new GasPriceOracle({ chainId: ChainId.XDAI })
|
||||
//
|
||||
// for (let i = 0; i < 100; i++) {
|
||||
// const res = await newOracle.eip1559.estimateFees()
|
||||
// await new Promise((r) =>
|
||||
// setTimeout(() => {
|
||||
// r(console.log(`res - ${i}`, res))
|
||||
// }, 3000),
|
||||
// )
|
||||
// }
|
||||
// })
|
||||
|
||||
it('legacy', async function () {
|
||||
const newOracle = new GasPriceOracle({ timeout: 1337, chainId: INJECTED_CHAIN_ID, defaultRpc: INJECTED_RPC_URL })
|
||||
|
||||
const goerliGas = (await newOracle.gasPrices({ isLegacy: true })) as unknown as GasPrice
|
||||
if ('instant' in goerliGas) {
|
||||
goerliGas.instant.should.be.a('number')
|
||||
goerliGas.fast.should.be.a('number')
|
||||
goerliGas.standard.should.be.a('number')
|
||||
goerliGas.low.should.be.a('number')
|
||||
}
|
||||
|
||||
newOracle.legacy.configuration.defaultRpc.should.be.equal(INJECTED_RPC_URL)
|
||||
newOracle.legacy.configuration.chainId.should.be.equal(INJECTED_CHAIN_ID)
|
||||
})
|
||||
it('eip-1559', async function () {
|
||||
const newOracle = new GasPriceOracle({ timeout: 1337, chainId: INJECTED_CHAIN_ID, defaultRpc: INJECTED_RPC_URL })
|
||||
|
||||
const goerliEstimated = await newOracle.eip1559.estimateFees()
|
||||
if (goerliEstimated.baseFee) {
|
||||
goerliEstimated.baseFee.should.be.a('number')
|
||||
|
||||
goerliEstimated.maxFeePerGas.should.be.at.least(goerliEstimated.baseFee)
|
||||
const estimatedMaxFee = new BigNumber(goerliEstimated.baseFee)
|
||||
.plus(goerliEstimated.maxPriorityFeePerGas)
|
||||
.decimalPlaces(GWEI_PRECISION)
|
||||
.toNumber()
|
||||
goerliEstimated.maxFeePerGas.should.be.at.equal(estimatedMaxFee)
|
||||
}
|
||||
|
||||
goerliEstimated.maxFeePerGas.should.be.a('number')
|
||||
goerliEstimated.maxPriorityFeePerGas.should.be.a('number')
|
||||
|
||||
newOracle.legacy.configuration.defaultRpc.should.be.equal(INJECTED_RPC_URL)
|
||||
newOracle.legacy.configuration.chainId.should.be.equal(INJECTED_CHAIN_ID)
|
||||
})
|
||||
it('without selected strategy', async function () {
|
||||
const newOracle = new GasPriceOracle({ timeout: 1337, chainId: INJECTED_CHAIN_ID, defaultRpc: INJECTED_RPC_URL })
|
||||
|
||||
const gasPrice = await newOracle.gasPrices({})
|
||||
|
||||
if ('baseFee' in gasPrice && gasPrice.baseFee) {
|
||||
gasPrice.baseFee.should.be.a('number')
|
||||
|
||||
gasPrice.maxFeePerGas.should.be.at.least(gasPrice.baseFee)
|
||||
const estimatedMaxFee = new BigNumber(gasPrice.baseFee)
|
||||
.plus(gasPrice.maxPriorityFeePerGas)
|
||||
.decimalPlaces(GWEI_PRECISION)
|
||||
.toNumber()
|
||||
gasPrice.maxFeePerGas.should.be.at.equal(estimatedMaxFee)
|
||||
}
|
||||
|
||||
if ('maxFeePerGas' in gasPrice) {
|
||||
gasPrice.maxFeePerGas.should.be.a('number')
|
||||
gasPrice.maxPriorityFeePerGas.should.be.a('number')
|
||||
}
|
||||
|
||||
if ('instant' in gasPrice) {
|
||||
gasPrice.instant.should.be.a('number')
|
||||
gasPrice.fast.should.be.a('number')
|
||||
gasPrice.standard.should.be.a('number')
|
||||
gasPrice.low.should.be.a('number')
|
||||
}
|
||||
|
||||
newOracle.legacy.configuration.defaultRpc.should.be.equal(INJECTED_RPC_URL)
|
||||
newOracle.legacy.configuration.chainId.should.be.equal(INJECTED_CHAIN_ID)
|
||||
})
|
||||
})
|
||||
})
|
||||
})
|
||||
|
||||
after('after', function () {
|
||||
after(function () {
|
||||
mockery.disable()
|
||||
mockery.deregisterMock('node-fetch')
|
||||
})
|
||||
})
|
||||
|
|
@ -0,0 +1,163 @@
|
|||
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
|
||||
// @ts-ignore
|
||||
import chai from 'chai'
|
||||
import BigNumber from 'bignumber.js'
|
||||
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
|
||||
// @ts-ignore
|
||||
import chaiAsPromised from 'chai-as-promised'
|
||||
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
|
||||
// @ts-ignore
|
||||
import mockery from 'mockery'
|
||||
import { before, describe } from 'mocha'
|
||||
|
||||
import { sleep } from '@/utils'
|
||||
import { ChainId, NETWORKS } from '@/config'
|
||||
import { GWEI_PRECISION } from '@/constants'
|
||||
|
||||
import { GasPriceOracle } from '@/services/gas-price-oracle'
|
||||
import { EstimatedGasPrice } from '@/services/gas-estimation'
|
||||
import { FALLBACK_ESTIMATE } from '@/services/gas-estimation/constants'
|
||||
|
||||
chai.use(chaiAsPromised)
|
||||
chai.should()
|
||||
|
||||
let oracle = new GasPriceOracle()
|
||||
|
||||
before('before', async () => {
|
||||
const gasPrice = await oracle.eip1559.estimateFees()
|
||||
console.log('eip estimation -', { gasPrice })
|
||||
})
|
||||
|
||||
//
|
||||
beforeEach('beforeEach', function () {
|
||||
oracle = new GasPriceOracle()
|
||||
})
|
||||
|
||||
const INJECTED_RPC_URL = 'https://cloudflare-eth.com'
|
||||
describe('eip-1559 gasOracle', function () {
|
||||
describe('eip constructor', function () {
|
||||
it('should set default values', function () {
|
||||
oracle.eip1559.configuration.blocksCount.should.be.equal(NETWORKS[oracle.eip1559.configuration.chainId].blocksCount)
|
||||
oracle.eip1559.configuration.percentile.should.be.equal(NETWORKS[oracle.eip1559.configuration.chainId].percentile)
|
||||
})
|
||||
|
||||
it('should set passed values', function () {
|
||||
const newHistoryBlocks = 15
|
||||
const newHistoryPercentile = 10
|
||||
|
||||
const newOracle = new GasPriceOracle({
|
||||
blocksCount: newHistoryBlocks,
|
||||
percentile: newHistoryPercentile,
|
||||
})
|
||||
|
||||
newOracle.eip1559.configuration.blocksCount.should.be.equal(newHistoryBlocks)
|
||||
newOracle.eip1559.configuration.percentile.should.be.equal(newHistoryPercentile)
|
||||
})
|
||||
})
|
||||
|
||||
const chains = Object.keys(NETWORKS).map((id) => Number(id))
|
||||
|
||||
chains.forEach((chainId) => {
|
||||
let eipOracle = new GasPriceOracle({ chainId })
|
||||
|
||||
describe(`estimateGas ${chainId}`, function () {
|
||||
it('should return error if not eip-1559 not supported', async function () {
|
||||
if (chainId === ChainId.OPTIMISM || chainId === ChainId.BSC) {
|
||||
await eipOracle.eip1559
|
||||
.estimateFees()
|
||||
.should.be.rejectedWith('An error occurred while fetching current base fee, falling back')
|
||||
}
|
||||
})
|
||||
|
||||
if (chainId === ChainId.OPTIMISM || chainId === ChainId.BSC) {
|
||||
return
|
||||
}
|
||||
|
||||
it('should work', async function () {
|
||||
const estimateGas: EstimatedGasPrice = await eipOracle.eip1559.estimateFees()
|
||||
|
||||
console.log(`estimateGas ${chainId}`, estimateGas)
|
||||
if (estimateGas.baseFee) {
|
||||
estimateGas.baseFee.should.be.a('number')
|
||||
estimateGas.maxFeePerGas.should.be.a('number')
|
||||
estimateGas.maxPriorityFeePerGas.should.be.a('number')
|
||||
|
||||
estimateGas.maxFeePerGas.should.be.at.least(estimateGas.baseFee)
|
||||
const estimatedMaxFee = new BigNumber(estimateGas.baseFee)
|
||||
.plus(estimateGas.maxPriorityFeePerGas)
|
||||
.decimalPlaces(GWEI_PRECISION)
|
||||
.toNumber()
|
||||
estimateGas.maxFeePerGas.should.be.at.equal(estimatedMaxFee)
|
||||
}
|
||||
})
|
||||
|
||||
it('should work with crashed rpc (return default data)', async function () {
|
||||
eipOracle = new GasPriceOracle({ defaultRpc: 'wrongRpcUrl', chainId })
|
||||
const estimateGas: EstimatedGasPrice = await eipOracle.eip1559.estimateFees(FALLBACK_ESTIMATE)
|
||||
|
||||
if (estimateGas.baseFee) {
|
||||
estimateGas.baseFee.should.be.a('number')
|
||||
estimateGas.maxFeePerGas.should.be.a('number')
|
||||
estimateGas.maxPriorityFeePerGas.should.be.a('number')
|
||||
|
||||
estimateGas.baseFee.should.be.at.equal(FALLBACK_ESTIMATE.baseFee)
|
||||
estimateGas.maxFeePerGas.should.be.at.equal(FALLBACK_ESTIMATE.maxFeePerGas)
|
||||
estimateGas.maxPriorityFeePerGas.should.be.at.equal(FALLBACK_ESTIMATE.maxPriorityFeePerGas)
|
||||
}
|
||||
})
|
||||
|
||||
it('should work with custom rpc', async function () {
|
||||
eipOracle = new GasPriceOracle({ defaultRpc: INJECTED_RPC_URL, chainId })
|
||||
const estimateGas: EstimatedGasPrice = await eipOracle.eip1559.estimateFees(FALLBACK_ESTIMATE)
|
||||
|
||||
if (estimateGas.baseFee) {
|
||||
estimateGas.baseFee.should.be.a('number')
|
||||
estimateGas.maxFeePerGas.should.be.a('number')
|
||||
estimateGas.maxPriorityFeePerGas.should.be.a('number')
|
||||
|
||||
const estimatedMaxFee = new BigNumber(estimateGas.baseFee)
|
||||
.plus(estimateGas.maxPriorityFeePerGas)
|
||||
.decimalPlaces(GWEI_PRECISION)
|
||||
.toNumber()
|
||||
estimateGas.maxFeePerGas.should.be.at.least(estimateGas.baseFee)
|
||||
estimateGas.maxFeePerGas.should.be.at.equal(estimatedMaxFee)
|
||||
}
|
||||
})
|
||||
it('should cache', async function () {
|
||||
eipOracle = new GasPriceOracle({ shouldCache: true, chainId })
|
||||
const estimateGasFirst: EstimatedGasPrice = await eipOracle.eip1559.estimateFees()
|
||||
|
||||
await sleep(2000)
|
||||
const estimateGasSecond: EstimatedGasPrice = await eipOracle.eip1559.estimateFees()
|
||||
|
||||
if (estimateGasFirst?.maxFeePerGas) {
|
||||
estimateGasFirst.maxFeePerGas.should.be.at.equal(estimateGasSecond?.maxFeePerGas)
|
||||
}
|
||||
|
||||
await sleep(4000)
|
||||
const estimateGasThird: EstimatedGasPrice = await eipOracle.eip1559.estimateFees()
|
||||
|
||||
if (estimateGasSecond?.maxFeePerGas) {
|
||||
estimateGasSecond.maxFeePerGas.should.be.at.equal(estimateGasThird?.maxFeePerGas)
|
||||
}
|
||||
})
|
||||
})
|
||||
})
|
||||
|
||||
describe('estimate ARBITRUM', function () {
|
||||
it('should be priority 0', async function () {
|
||||
const eipOracle = new GasPriceOracle({ minPriority: 0, chainId: ChainId.ARBITRUM })
|
||||
const estimateGas: EstimatedGasPrice = await eipOracle.eip1559.estimateFees(FALLBACK_ESTIMATE)
|
||||
|
||||
console.log('estimateGas.maxPriorityFeePerGas', estimateGas.maxPriorityFeePerGas)
|
||||
estimateGas.maxPriorityFeePerGas.should.be.at.equal(0)
|
||||
})
|
||||
})
|
||||
})
|
||||
|
||||
after('after', function () {
|
||||
after(function () {
|
||||
mockery.disable()
|
||||
mockery.deregisterMock('node-fetch')
|
||||
})
|
||||
})
|
||||
|
|
@ -0,0 +1,383 @@
|
|||
/* eslint-disable @typescript-eslint/no-var-requires */
|
||||
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
|
||||
// @ts-ignore
|
||||
import chai from 'chai'
|
||||
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
|
||||
// @ts-ignore
|
||||
import mockery from 'mockery'
|
||||
import BigNumber from 'bignumber.js'
|
||||
import { before, describe } from 'mocha'
|
||||
|
||||
import { sleep } from '@/utils'
|
||||
import { ChainId, NETWORKS } from '@/config'
|
||||
import { DEFAULT_TIMEOUT } from '@/constants'
|
||||
import { GasPriceOracle } from '@/services/gas-price-oracle'
|
||||
import { GasPrice, LegacyGasPriceOracle, OffChainOracle } from '@/services/legacy-gas-price'
|
||||
|
||||
chai.use(require('chai-as-promised'))
|
||||
chai.should()
|
||||
|
||||
let oracle = new GasPriceOracle()
|
||||
let { onChainOracles, offChainOracles } = oracle.legacy
|
||||
|
||||
before('before', async () => {
|
||||
const gasPrice = await oracle.legacy.gasPrices()
|
||||
console.log('legacy gasPrice - ', { gasPrice })
|
||||
})
|
||||
|
||||
before('before', function () {
|
||||
const axiosMock = {
|
||||
get: () => {
|
||||
throw new Error('axios GET method is mocked for tests')
|
||||
},
|
||||
post: () => {
|
||||
throw new Error('axios POST method is mocked for tests')
|
||||
},
|
||||
}
|
||||
mockery.registerMock('axios', axiosMock)
|
||||
})
|
||||
|
||||
beforeEach('beforeEach', function () {
|
||||
oracle = new GasPriceOracle()
|
||||
;({ onChainOracles, offChainOracles } = oracle.legacy)
|
||||
})
|
||||
|
||||
const INJECTED_RPC_URL = 'https://cloudflare-eth.com'
|
||||
|
||||
describe('legacy gasOracle', function () {
|
||||
describe('legacy constructor', function () {
|
||||
it('should set default values', function () {
|
||||
oracle.legacy.configuration.defaultRpc.should.be.equal(NETWORKS[ChainId.MAINNET].rpcUrl)
|
||||
oracle.legacy.configuration.timeout.should.be.equal(DEFAULT_TIMEOUT)
|
||||
})
|
||||
|
||||
it('should set passed values', function () {
|
||||
const newOracle = new GasPriceOracle({ timeout: 1337 })
|
||||
|
||||
newOracle.legacy.configuration.defaultRpc.should.be.equal(NETWORKS[ChainId.MAINNET].rpcUrl)
|
||||
newOracle.legacy.configuration.timeout.should.be.equal(1337)
|
||||
})
|
||||
})
|
||||
|
||||
describe('fetchGasPricesOffChain', function () {
|
||||
it('should work', async function () {
|
||||
const gas: GasPrice = await oracle.legacy.fetchGasPricesOffChain(true)
|
||||
|
||||
gas.instant.should.be.a('number')
|
||||
gas.fast.should.be.a('number')
|
||||
gas.standard.should.be.a('number')
|
||||
gas.low.should.be.a('number')
|
||||
|
||||
gas.instant.should.be.at.least(gas.fast)
|
||||
gas.fast.should.be.at.least(gas.standard)
|
||||
gas.standard.should.be.at.least(gas.low)
|
||||
gas.low.should.not.be.equal(0)
|
||||
})
|
||||
|
||||
it('should throw if all offchain oracles are down', async function () {
|
||||
mockery.enable({ useCleanCache: true, warnOnUnregistered: false })
|
||||
const { GasPriceOracle } = require('../index')
|
||||
oracle = new GasPriceOracle()
|
||||
// @ts-ignore
|
||||
await oracle.legacy.fetchGasPricesOffChain(true).should.be.rejectedWith('All oracles are down. Probably a network error.')
|
||||
mockery.disable()
|
||||
})
|
||||
})
|
||||
|
||||
describe('fetchGasPricesOnChain', function () {
|
||||
it('should work', async function () {
|
||||
const gas: number = await oracle.legacy.fetchGasPricesOnChain()
|
||||
gas.should.be.a('number')
|
||||
gas.should.be.above(1)
|
||||
gas.should.not.be.equal(0)
|
||||
})
|
||||
|
||||
it('should work with custom rpc', async function () {
|
||||
const rpc = INJECTED_RPC_URL
|
||||
oracle = new GasPriceOracle({ defaultRpc: rpc })
|
||||
oracle.legacy.configuration.defaultRpc.should.be.equal(rpc)
|
||||
const gas: number = await oracle.legacy.fetchGasPricesOnChain()
|
||||
|
||||
gas.should.be.a('number')
|
||||
|
||||
gas.should.be.above(1)
|
||||
gas.should.not.be.equal(0)
|
||||
})
|
||||
|
||||
it('should remove oracle', async function () {
|
||||
await oracle.legacy.fetchGasPricesOnChain()
|
||||
oracle.legacy.removeOnChainOracle('chainlink')
|
||||
// @ts-ignore
|
||||
await oracle.legacy.fetchGasPricesOnChain().should.be.rejectedWith('All oracles are down. Probably a network error.')
|
||||
})
|
||||
|
||||
it('should add oracle', async function () {
|
||||
const toAdd = onChainOracles.chainlink
|
||||
await oracle.legacy.fetchGasPricesOnChain()
|
||||
oracle.legacy.removeOnChainOracle('chainlink')
|
||||
|
||||
// @ts-ignore
|
||||
await oracle.legacy.fetchGasPricesOnChain().should.be.rejectedWith('All oracles are down. Probably a network error.')
|
||||
|
||||
oracle.legacy.addOnChainOracle(toAdd)
|
||||
const gas: number = await oracle.legacy.fetchGasPricesOnChain()
|
||||
|
||||
gas.should.be.a('number')
|
||||
gas.should.not.be.equal(0)
|
||||
})
|
||||
|
||||
it('should throw if all onchain oracles are down', async function () {
|
||||
mockery.enable({ useCleanCache: true, warnOnUnregistered: false })
|
||||
const { GasPriceOracle } = require('../index')
|
||||
|
||||
oracle = new GasPriceOracle()
|
||||
// @ts-ignore
|
||||
await oracle.legacy.fetchGasPricesOnChain().should.be.rejectedWith('All oracles are down. Probably a network error.')
|
||||
mockery.disable()
|
||||
})
|
||||
})
|
||||
|
||||
describe('fetchGasPriceFromRpc', function () {
|
||||
it('should work', async function () {
|
||||
const gas: number = await oracle.legacy.fetchGasPriceFromRpc()
|
||||
gas.should.be.a('number')
|
||||
gas.should.be.above(1)
|
||||
gas.should.not.be.equal(0)
|
||||
})
|
||||
|
||||
it('should work with custom rpc', async function () {
|
||||
const rpc = INJECTED_RPC_URL
|
||||
const oracle = new GasPriceOracle({ defaultRpc: rpc })
|
||||
oracle.legacy.configuration.defaultRpc.should.be.equal(rpc)
|
||||
const gas: number = await oracle.legacy.fetchGasPriceFromRpc()
|
||||
|
||||
gas.should.be.a('number')
|
||||
|
||||
gas.should.be.above(1)
|
||||
gas.should.not.be.equal(0)
|
||||
})
|
||||
|
||||
it('should throw if default rpc is down', async function () {
|
||||
mockery.enable({ useCleanCache: true, warnOnUnregistered: false })
|
||||
const { GasPriceOracle } = require('../index')
|
||||
|
||||
oracle = new GasPriceOracle()
|
||||
// @ts-ignore
|
||||
await oracle.legacy.fetchGasPriceFromRpc().should.be.rejectedWith('Default RPC is down. Probably a network error.')
|
||||
mockery.disable()
|
||||
})
|
||||
})
|
||||
|
||||
describe('legacy gasPrice', function () {
|
||||
it('should work', async function () {
|
||||
const gas = (await oracle.gasPrices({ isLegacy: true })) as unknown as GasPrice
|
||||
|
||||
gas.instant.should.be.a('number')
|
||||
gas.fast.should.be.a('number')
|
||||
gas.standard.should.be.a('number')
|
||||
gas.low.should.be.a('number')
|
||||
|
||||
gas.instant.should.be.at.least(gas.fast)
|
||||
gas.fast.should.be.at.least(gas.standard)
|
||||
gas.standard.should.be.at.least(gas.low)
|
||||
gas.low.should.not.be.equal(0)
|
||||
})
|
||||
|
||||
it('should fallback', async function () {
|
||||
mockery.enable({ useCleanCache: true, warnOnUnregistered: false })
|
||||
const { GasPriceOracle } = require('../index')
|
||||
|
||||
oracle = new GasPriceOracle()
|
||||
|
||||
const gas = (await oracle.gasPrices({ isLegacy: true })) as unknown as GasPrice
|
||||
|
||||
const shouldBe = LegacyGasPriceOracle.getCategorize(NETWORKS[ChainId.MAINNET].defaultGasPrice)
|
||||
|
||||
gas.instant.should.be.equal(shouldBe.instant)
|
||||
gas.fast.should.be.equal(shouldBe.fast)
|
||||
gas.standard.should.be.equal(shouldBe.standard)
|
||||
gas.low.should.be.equal(shouldBe.low)
|
||||
|
||||
mockery.disable()
|
||||
})
|
||||
|
||||
it('should fallback to set values', async function () {
|
||||
mockery.enable({ useCleanCache: true, warnOnUnregistered: false })
|
||||
const { GasPriceOracle } = require('../index')
|
||||
oracle = new GasPriceOracle()
|
||||
|
||||
const fallbackGasPrices = {
|
||||
gasPrices: {
|
||||
instant: 50,
|
||||
fast: 21,
|
||||
standard: 10,
|
||||
low: 3,
|
||||
},
|
||||
}
|
||||
const gas = (await oracle.gasPrices({ isLegacy: true, fallbackGasPrices })) as unknown as GasPrice
|
||||
|
||||
gas.instant.should.be.equal(fallbackGasPrices.gasPrices.instant)
|
||||
gas.fast.should.be.equal(fallbackGasPrices.gasPrices.fast)
|
||||
gas.standard.should.be.equal(fallbackGasPrices.gasPrices.standard)
|
||||
gas.low.should.be.equal(fallbackGasPrices.gasPrices.low)
|
||||
|
||||
mockery.disable()
|
||||
})
|
||||
|
||||
it('should cache', async function () {
|
||||
const oracle = new GasPriceOracle({ shouldCache: true })
|
||||
const gasPricesFirst = await oracle.legacy.gasPrices()
|
||||
|
||||
await sleep(2000)
|
||||
const gasPricesSecond = await oracle.legacy.gasPrices()
|
||||
|
||||
if (gasPricesFirst.fast) {
|
||||
gasPricesFirst.fast.should.be.at.equal(gasPricesSecond?.fast)
|
||||
}
|
||||
|
||||
await sleep(4000)
|
||||
const gasPricesThird = await oracle.legacy.gasPrices()
|
||||
|
||||
if (gasPricesSecond.fast) {
|
||||
gasPricesSecond.fast.should.be.at.equal(gasPricesThird?.fast)
|
||||
}
|
||||
})
|
||||
})
|
||||
|
||||
describe('median', function () {
|
||||
it('should work', function () {
|
||||
const gas1 = { instant: 100, fast: 100, standard: 100, low: 100 }
|
||||
const gas2 = { instant: 90, fast: 90, standard: 90, low: 90 }
|
||||
const gas3 = { instant: 70, fast: 70, standard: 70, low: 70 }
|
||||
const gas4 = { instant: 110.1, fast: 110.1, standard: 110.1, low: 110.1 }
|
||||
|
||||
let gas: GasPrice = LegacyGasPriceOracle.getMedianGasPrice([gas1, gas2, gas3])
|
||||
|
||||
gas.instant.should.be.a('number')
|
||||
gas.fast.should.be.a('number')
|
||||
gas.standard.should.be.a('number')
|
||||
gas.low.should.be.a('number')
|
||||
|
||||
gas.instant.should.be.eq(90)
|
||||
gas.fast.should.be.eq(90)
|
||||
gas.standard.should.be.eq(90)
|
||||
gas.low.should.be.eq(90)
|
||||
|
||||
gas = LegacyGasPriceOracle.getMedianGasPrice([gas1, gas2, gas3, gas4])
|
||||
|
||||
gas.instant.should.be.a('number')
|
||||
gas.fast.should.be.a('number')
|
||||
gas.standard.should.be.a('number')
|
||||
gas.low.should.be.a('number')
|
||||
|
||||
gas.instant.should.be.eq(95)
|
||||
gas.fast.should.be.eq(95)
|
||||
gas.standard.should.be.eq(95)
|
||||
gas.low.should.be.eq(95)
|
||||
})
|
||||
})
|
||||
|
||||
describe('fetchMedianGasPriceOffChain', function () {
|
||||
it('should work', async function () {
|
||||
const gas: GasPrice = await oracle.legacy.fetchMedianGasPriceOffChain()
|
||||
|
||||
gas.instant.should.be.a('number')
|
||||
gas.fast.should.be.a('number')
|
||||
gas.standard.should.be.a('number')
|
||||
gas.low.should.be.a('number')
|
||||
|
||||
gas.instant.should.be.at.least(gas.fast)
|
||||
gas.fast.should.be.at.least(gas.standard)
|
||||
gas.standard.should.be.at.least(gas.low)
|
||||
gas.low.should.not.be.equal(0)
|
||||
})
|
||||
})
|
||||
|
||||
describe('normalize result values', function () {
|
||||
const wrongDecimalsGas = {
|
||||
gasPrices: {
|
||||
instant: 1.1,
|
||||
fast: 2.12345678901,
|
||||
standard: 3.12345678901,
|
||||
low: 3.12345679,
|
||||
},
|
||||
}
|
||||
|
||||
const checkDecimals = (gas: GasPrice) => {
|
||||
const gasPrices: number[] = Object.values(gas)
|
||||
|
||||
for (const gas of gasPrices) {
|
||||
new BigNumber(gas).dp().should.be.at.most(9)
|
||||
}
|
||||
}
|
||||
|
||||
it('default fallback should be normalized', function () {
|
||||
mockery.enable({ useCleanCache: true, warnOnUnregistered: false })
|
||||
|
||||
oracle = new GasPriceOracle({ fallbackGasPrices: wrongDecimalsGas })
|
||||
|
||||
checkDecimals(oracle.legacy.configuration.fallbackGasPrices)
|
||||
|
||||
mockery.disable()
|
||||
})
|
||||
|
||||
it('fallback should be normalized', async function () {
|
||||
mockery.enable({ useCleanCache: true, warnOnUnregistered: false })
|
||||
const { GasPriceOracle } = require('../index')
|
||||
|
||||
oracle = new GasPriceOracle()
|
||||
|
||||
const gas = await oracle.legacy.gasPrices(wrongDecimalsGas.gasPrices)
|
||||
|
||||
checkDecimals(gas)
|
||||
mockery.disable()
|
||||
})
|
||||
|
||||
it('rpc fallback should be normalized', async function () {
|
||||
oracle = new GasPriceOracle({ chainId: 42161, defaultRpc: 'https://arb1.arbitrum.io/rpc' })
|
||||
|
||||
const gas = await oracle.legacy.gasPrices()
|
||||
|
||||
checkDecimals(gas)
|
||||
})
|
||||
})
|
||||
|
||||
describe('askOracle', function () {
|
||||
const chains = Object.keys(NETWORKS).map((id) => Number(id))
|
||||
|
||||
chains.forEach((chainId) => {
|
||||
describe(`all ${ChainId[chainId]} oracles should answer`, function () {
|
||||
oracle = new GasPriceOracle({ chainId })
|
||||
;({ offChainOracles } = oracle.legacy)
|
||||
|
||||
for (const o of Object.values(offChainOracles) as OffChainOracle[]) {
|
||||
it(`check ${o.name}`, async function () {
|
||||
try {
|
||||
const gas: GasPrice = await oracle.legacy.askOracle(o)
|
||||
|
||||
gas.instant.should.be.a('number')
|
||||
gas.fast.should.be.a('number')
|
||||
gas.standard.should.be.a('number')
|
||||
gas.low.should.be.a('number')
|
||||
|
||||
gas.instant.should.be.at.least(gas.fast)
|
||||
gas.fast.should.be.at.least(gas.standard)
|
||||
gas.standard.should.be.at.least(gas.low)
|
||||
gas.low.should.not.be.equal(0)
|
||||
} catch (e) {
|
||||
console.error(`Failed to get data from ${o.name} oracle`)
|
||||
throw new Error(e)
|
||||
}
|
||||
})
|
||||
}
|
||||
})
|
||||
})
|
||||
})
|
||||
})
|
||||
|
||||
after('after', function () {
|
||||
after(function () {
|
||||
mockery.disable()
|
||||
mockery.deregisterMock('node-fetch')
|
||||
})
|
||||
})
|
||||
|
|
@ -0,0 +1,40 @@
|
|||
import { AllOracles } from './services/legacy-gas-price'
|
||||
|
||||
export interface Block {
|
||||
baseFeePerGas: string
|
||||
difficulty: string
|
||||
extraData: string
|
||||
gasLimit: string
|
||||
gasUsed: string
|
||||
hash: string
|
||||
miner: string
|
||||
mixHash: string
|
||||
nonce: string
|
||||
number: string
|
||||
parentHash: string
|
||||
receiptsRoot: string
|
||||
sha3Uncles: string
|
||||
size: string
|
||||
stateRoot: string
|
||||
timestamp: string
|
||||
totalDifficulty: string
|
||||
transactions: unknown[]
|
||||
transactionsRoot: string
|
||||
uncles: unknown[]
|
||||
}
|
||||
|
||||
export interface FeeHistory {
|
||||
baseFeePerGas: string[]
|
||||
gasUsedRatio: number[]
|
||||
reward?: string[][]
|
||||
oldestBlock: string
|
||||
}
|
||||
|
||||
export type NetworksConfig = {
|
||||
oracles: AllOracles
|
||||
rpcUrl: string
|
||||
defaultGasPrice: number
|
||||
maxGasPrice: number
|
||||
blocksCount: number
|
||||
percentile: number
|
||||
}
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
import BigNumber from 'bignumber.js'
|
||||
import { GWEI, GWEI_PRECISION } from '@/constants'
|
||||
|
||||
const toGwei = (amount: number | string | BigNumber): BigNumber => {
|
||||
return new BigNumber(amount).multipliedBy(GWEI).decimalPlaces(GWEI_PRECISION)
|
||||
}
|
||||
|
||||
const fromWeiToGwei = (amount: number | string | BigNumber): BigNumber => {
|
||||
return new BigNumber(amount).dividedBy(GWEI).decimalPlaces(GWEI_PRECISION)
|
||||
}
|
||||
|
||||
const fromNumberToHex = (amount: number | string | BigNumber): string => {
|
||||
return `0x${new BigNumber(amount).toString(16)}`
|
||||
}
|
||||
|
||||
const fromGweiToWeiHex = (value: number): string => {
|
||||
return fromNumberToHex(new BigNumber(value).multipliedBy(GWEI).decimalPlaces(0))
|
||||
}
|
||||
|
||||
export { toGwei, fromWeiToGwei, fromGweiToWeiHex, fromNumberToHex }
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
export * from './math'
|
||||
export * from './crypto'
|
||||
|
||||
const sleep = (time: number): Promise<boolean> => {
|
||||
return new Promise((res) => setTimeout(() => res(true), time))
|
||||
}
|
||||
|
||||
export { sleep }
|
||||
|
|
@ -0,0 +1,45 @@
|
|||
import BigNumber from 'bignumber.js'
|
||||
|
||||
import { BG_ZERO, PERCENT_MULTIPLIER } from '@/constants'
|
||||
|
||||
import { toGwei } from './crypto'
|
||||
|
||||
type FindMaxRes = {
|
||||
highest: BigNumber
|
||||
index: number
|
||||
}
|
||||
|
||||
const findMax = (values: BigNumber[]): FindMaxRes => {
|
||||
return values.reduce(
|
||||
(acc, curr, index) => {
|
||||
const isGreaterThanAcc = curr.isGreaterThan(acc.highest)
|
||||
if (isGreaterThanAcc) {
|
||||
acc.highest = curr
|
||||
acc.index = index
|
||||
}
|
||||
return acc
|
||||
},
|
||||
{
|
||||
highest: BG_ZERO,
|
||||
index: 0,
|
||||
},
|
||||
)
|
||||
}
|
||||
|
||||
const getMedian = <T>(arr: T[]): number => {
|
||||
return Math.floor(arr.length / 2)
|
||||
}
|
||||
|
||||
const round = (value: number | string | BigNumber): BigNumber => {
|
||||
return new BigNumber(value).decimalPlaces(0, 2)
|
||||
}
|
||||
|
||||
const roundGwei = (value: number | string | BigNumber): BigNumber => {
|
||||
return toGwei(value).decimalPlaces(0, 2)
|
||||
}
|
||||
|
||||
const bumpOnPercent = (value: number, bumpPercent: number): number => {
|
||||
return value + (value * bumpPercent) / PERCENT_MULTIPLIER
|
||||
}
|
||||
|
||||
export { findMax, getMedian, round, roundGwei, bumpOnPercent }
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
{
|
||||
"extends": "./tsconfig",
|
||||
"compilerOptions": {
|
||||
"declaration": false,
|
||||
"target": "es2015",
|
||||
"module": "es2015",
|
||||
"outDir": "lib/esm"
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,33 @@
|
|||
{
|
||||
"compilerOptions": {
|
||||
"target": "es5",
|
||||
"module": "commonjs",
|
||||
"moduleResolution": "node",
|
||||
"lib": ["es5", "es6", "es2021", "esnext"],
|
||||
"experimentalDecorators": true,
|
||||
"sourceMap": true,
|
||||
"outDir": "lib",
|
||||
"noImplicitAny": true,
|
||||
"allowJs": true,
|
||||
"declaration": true,
|
||||
"skipLibCheck": true,
|
||||
"esModuleInterop": true,
|
||||
"checkJs": false,
|
||||
"noUnusedLocals": true,
|
||||
"strictNullChecks": true,
|
||||
"noImplicitThis": true,
|
||||
"noImplicitReturns": true,
|
||||
"allowSyntheticDefaultImports": true,
|
||||
"strictFunctionTypes": true,
|
||||
"forceConsistentCasingInFileNames": true,
|
||||
"resolveJsonModule": true,
|
||||
"isolatedModules": true,
|
||||
"baseUrl": ".",
|
||||
"paths": {
|
||||
"@/*": ["./src/*"]
|
||||
},
|
||||
"types": ["@types/node"]
|
||||
},
|
||||
"include": ["src/**/*"],
|
||||
"exclude": ["node_modules", "src/tests"]
|
||||
}
|
||||
Loading…
Reference in New Issue