Refactor and features (#17)
* feat: features and refactor * fixed return types * update README Co-authored-by: Danil Kovtonyuk <danx.kov@gmail.com>
This commit is contained in:
Pavel Khavilov
GitHub
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3
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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: 12
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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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@ -27,7 +27,6 @@ jobs:
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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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- run: yarn run build
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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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16.15.1
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lib
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"semi": true,
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}
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README.md
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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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A library that has a collection of onchain and offchain gas price oracle URLs
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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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@ -10,7 +10,6 @@ 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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- https://blockscout.com/eth/mainnet/api/v1/gas-price-oracle
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Current onchain list:
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@ -22,7 +21,7 @@ Current offchain list:
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- https://ztake.org/
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### xDAI Chain
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### Gnosis Chain
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Current offchain list:
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@ -34,77 +33,266 @@ 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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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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### Basic
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### Configuration
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```js
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const options = {
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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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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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timeout: 10000,
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defaultFallbackGasPrices: {
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timeout: 10000, // specifies the number of milliseconds before the request times out.
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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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### 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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};
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const oracle = new GasPriceOracle(options);
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// optional fallbackGasPrices
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const fallbackGasPrices = {
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instant: 70,
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fast: 31,
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standard: 20,
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low: 7,
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};
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oracle.gasPrices(fallbackGasPrices).then(gasPrices => {
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console.log(gasPrices); // { instant: 50, fast: 21, standard: 10, low: 3 }
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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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The `gasPrices` method also accepts `median` 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) 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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|
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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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|
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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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|
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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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|
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### Offchain oracles only
|
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|
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```js
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const oracle = new GasPriceOracle();
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```typescript
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const oracle = new GasPriceOracle({ chainId: 1 })
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oracle.fetchGasPricesOffChain().then(gasPrices => {
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console.log(gasPrices); // { instant: 50, fast: 21, standard: 10, low: 3 }
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});
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// shouldGetMedian: boolean | undefined
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oracle.legacy.fetchGasPricesOffChain((shouldGetMedian = true)).then((gasPrices: GasPrice) => {
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console.log(gasPrices) // { instant: 50, fast: 21, standard: 10, low: 3 }
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})
|
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```
|
||||
|
||||
### Offchain oracles only (get median price)
|
||||
|
||||
```js
|
||||
const oracle = new GasPriceOracle();
|
||||
```typescript
|
||||
const oracle = new GasPriceOracle({ chainId: 1 })
|
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|
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oracle.fetchMedianGasPriceOffChain().then(gasPrices => {
|
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console.log(gasPrices); // { instant: 50, fast: 21, standard: 10, low: 3 }
|
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});
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oracle.legacy.fetchMedianGasPriceOffChain().then((gasPrices: GasPrice) => {
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console.log(gasPrices) // { instant: 50, fast: 21, standard: 10, low: 3 }
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})
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||||
```
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||||
|
||||
it returns the median gas price of all the oracles configured.
|
||||
This command provides the median gas price of all configured oracles.
|
||||
|
||||
### Custom RPC URL for onchain oracles
|
||||
|
||||
```js
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||||
const defaultRpc = 'https://mainnet.infura.io/v3/<API_KEY>';
|
||||
const oracle = new GasPriceOracle({ defaultRpc });
|
||||
```typescript
|
||||
const defaultRpc = 'https://mainnet.infura.io/v3/<API_KEY>'
|
||||
const oracle = new GasPriceOracle({ defaultRpc, chainId: 1 })
|
||||
|
||||
oracle.fetchGasPricesOnChain().then(gasPrices => {
|
||||
console.log(gasPrices); // 21
|
||||
});
|
||||
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()
|
||||
```
|
||||
|
||||
29
package.json
29
package.json
@ -1,30 +1,34 @@
|
||||
{
|
||||
"name": "gas-price-oracle",
|
||||
"version": "0.4.7",
|
||||
"version": "0.5.0",
|
||||
"description": "Gas Price Oracle library for Ethereum dApps.",
|
||||
"main": "lib/index.js",
|
||||
"homepage": "https://github.com/peppersec/gas-price-oracle",
|
||||
"main": "./lib/index.js",
|
||||
"module": "./lib/esm/index.js",
|
||||
"types": "./lib/index.d.ts",
|
||||
"repository": {
|
||||
"type": "git",
|
||||
"url": "https://github.com/peppersec/gas-price-oracle.git"
|
||||
},
|
||||
"types": "lib/index.d.ts",
|
||||
"prepare": "npm run build",
|
||||
"prepublishOnly": "npm test && npm run lint",
|
||||
"scripts": {
|
||||
"test": "mocha -r ts-node/register --timeout 30000 --exit src tests/*.test.ts",
|
||||
"build": "tsc",
|
||||
"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"
|
||||
"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"
|
||||
"Oracle",
|
||||
"EIP-1559",
|
||||
"London Fork"
|
||||
],
|
||||
"license": "MIT",
|
||||
"devDependencies": {
|
||||
@ -39,12 +43,17 @@
|
||||
"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",
|
||||
"typescript": "^4.0.3"
|
||||
"tsc-alias": "^1.6.11",
|
||||
"typescript": "^4.7.4"
|
||||
},
|
||||
"dependencies": {
|
||||
"axios": "^0.21.2",
|
||||
|
||||
10
src/config/arbitrum.ts
Normal file
10
src/config/arbitrum.ts
Normal file
@ -0,0 +1,10 @@
|
||||
import { OffChainOracles, OnChainOracles } from '@/services'
|
||||
|
||||
export const offChainOracles: OffChainOracles = {}
|
||||
|
||||
export const onChainOracles: OnChainOracles = {}
|
||||
|
||||
export default {
|
||||
offChainOracles,
|
||||
onChainOracles,
|
||||
}
|
||||
23
src/config/avax.ts
Normal file
23
src/config/avax.ts
Normal file
@ -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,
|
||||
}
|
||||
@ -1,23 +1,23 @@
|
||||
import { OffChainOracle, OffChainOracles, OnChainOracles } from '../types';
|
||||
import { OffChainOracle, OffChainOracles, OnChainOracles } from '@/services'
|
||||
|
||||
const ztake: OffChainOracle = {
|
||||
name: 'ztake',
|
||||
url: 'https://blockchains.ztake.org/api/h6WnmwNqw9CAJHzej5W4gD6LZ9n7v8EK/gasprice/bsc/',
|
||||
instantPropertyName: 'percentile_90',
|
||||
fastPropertyName: 'percentile_80',
|
||||
standardPropertyName: 'percentile_60',
|
||||
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 const onChainOracles: OnChainOracles = {}
|
||||
|
||||
export default {
|
||||
offChainOracles,
|
||||
onChainOracles,
|
||||
};
|
||||
}
|
||||
|
||||
@ -1,20 +1,78 @@
|
||||
import { NetworkConfig } from '../types';
|
||||
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 mainnetOracles from './mainnet';
|
||||
import bscOracles from './bsc';
|
||||
import xdaiOracles from './xdai';
|
||||
import polygonOracles from './polygon';
|
||||
import { NetworksConfig } from '@/types'
|
||||
|
||||
export enum ChainId {
|
||||
MAINNET = 1,
|
||||
BSC = 56,
|
||||
XDAI = 100,
|
||||
POLYGON = 137,
|
||||
OPTIMISM = 10,
|
||||
ARBITRUM = 42161,
|
||||
AVAX = 43114,
|
||||
}
|
||||
|
||||
export const NETWORKS: NetworkConfig = {
|
||||
[ChainId.MAINNET]: mainnetOracles,
|
||||
[ChainId.BSC]: bscOracles,
|
||||
[ChainId.XDAI]: xdaiOracles,
|
||||
[ChainId.POLYGON]: polygonOracles,
|
||||
};
|
||||
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,
|
||||
},
|
||||
}
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
import { OffChainOracle, OnChainOracle, OffChainOracles, OnChainOracles } from '../types';
|
||||
import { OffChainOracle, OffChainOracles, OnChainOracle, OnChainOracles } from '@/services'
|
||||
|
||||
const ethgasstation: OffChainOracle = {
|
||||
name: 'ethgasstation',
|
||||
@ -9,7 +9,7 @@ const ethgasstation: OffChainOracle = {
|
||||
lowPropertyName: 'safeLow',
|
||||
denominator: 10,
|
||||
additionalDataProperty: null,
|
||||
};
|
||||
}
|
||||
|
||||
const etherchain: OffChainOracle = {
|
||||
name: 'etherchain',
|
||||
@ -20,49 +20,25 @@ const etherchain: OffChainOracle = {
|
||||
lowPropertyName: 'slow',
|
||||
denominator: 1e9,
|
||||
additionalDataProperty: 'data',
|
||||
};
|
||||
|
||||
// const blockscout: OffChainOracle = {
|
||||
// name: 'blockscout',
|
||||
// url: 'https://blockscout.com/eth/mainnet/api/v1/gas-price-oracle',
|
||||
// instantPropertyName: 'fast',
|
||||
// fastPropertyName: 'average',
|
||||
// standardPropertyName: 'slow',
|
||||
// lowPropertyName: 'slow',
|
||||
// denominator: 1,
|
||||
// additionalDataProperty: null,
|
||||
// };
|
||||
|
||||
// const anyblock: OffChainOracle = {
|
||||
// name: 'anyblock',
|
||||
// url: 'https://api.anyblock.tools/ethereum/latest-minimum-gasprice',
|
||||
// instantPropertyName: 'instant',
|
||||
// fastPropertyName: 'fast',
|
||||
// standardPropertyName: 'standard',
|
||||
// lowPropertyName: 'slow',
|
||||
// denominator: 1,
|
||||
// additionalDataProperty: null,
|
||||
// };
|
||||
}
|
||||
|
||||
const chainlink: OnChainOracle = {
|
||||
name: 'chainlink',
|
||||
callData: '0x50d25bcd',
|
||||
contract: '0x169E633A2D1E6c10dD91238Ba11c4A708dfEF37C',
|
||||
denominator: '1000000000',
|
||||
};
|
||||
}
|
||||
|
||||
export const offChainOracles: OffChainOracles = {
|
||||
ethgasstation,
|
||||
// anyblock,
|
||||
// blockscout,
|
||||
etherchain,
|
||||
};
|
||||
}
|
||||
|
||||
export const onChainOracles: OnChainOracles = {
|
||||
chainlink,
|
||||
};
|
||||
}
|
||||
|
||||
export default {
|
||||
offChainOracles,
|
||||
onChainOracles,
|
||||
};
|
||||
}
|
||||
|
||||
18
src/config/optimism.ts
Normal file
18
src/config/optimism.ts
Normal file
@ -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,
|
||||
}
|
||||
@ -1,4 +1,4 @@
|
||||
import { OffChainOracle, OffChainOracles, OnChainOracles } from '../types';
|
||||
import { OffChainOracle, OffChainOracles, OnChainOracles } from '@/services'
|
||||
|
||||
const maticGasStation: OffChainOracle = {
|
||||
name: 'maticGasStation',
|
||||
@ -9,15 +9,15 @@ const maticGasStation: OffChainOracle = {
|
||||
lowPropertyName: 'safeLow',
|
||||
denominator: 1,
|
||||
additionalDataProperty: null,
|
||||
};
|
||||
}
|
||||
|
||||
export const offChainOracles: OffChainOracles = {
|
||||
maticGasStation,
|
||||
};
|
||||
}
|
||||
|
||||
export const onChainOracles: OnChainOracles = {};
|
||||
export const onChainOracles: OnChainOracles = {}
|
||||
|
||||
export default {
|
||||
offChainOracles,
|
||||
onChainOracles,
|
||||
};
|
||||
}
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
import { OffChainOracle, OffChainOracles, OnChainOracles } from '../types';
|
||||
import { OffChainOracle, OffChainOracles, OnChainOracles } from '@/services'
|
||||
|
||||
const blockscout: OffChainOracle = {
|
||||
name: 'blockscout',
|
||||
@ -9,15 +9,15 @@ const blockscout: OffChainOracle = {
|
||||
lowPropertyName: 'slow',
|
||||
denominator: 1,
|
||||
additionalDataProperty: null,
|
||||
};
|
||||
}
|
||||
|
||||
export const offChainOracles: OffChainOracles = {
|
||||
blockscout,
|
||||
};
|
||||
}
|
||||
|
||||
export const onChainOracles: OnChainOracles = {};
|
||||
export const onChainOracles: OnChainOracles = {}
|
||||
|
||||
export default {
|
||||
offChainOracles,
|
||||
onChainOracles,
|
||||
};
|
||||
}
|
||||
|
||||
14
src/constants/index.ts
Normal file
14
src/constants/index.ts
Normal file
@ -0,0 +1,14 @@
|
||||
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
|
||||
export { GWEI, DEFAULT_TIMEOUT, ROUND_UP, ROUND_DOWN, GWEI_PRECISION, INT_PRECISION, SUCCESS_STATUS, BG_ZERO, PERCENT_MULTIPLIER }
|
||||
279
src/index.ts
279
src/index.ts
@ -1,278 +1 @@
|
||||
import axios from 'axios';
|
||||
import BigNumber from 'bignumber.js';
|
||||
|
||||
import { ChainId, NETWORKS } from './config';
|
||||
|
||||
import {
|
||||
Config,
|
||||
Options,
|
||||
GasPrice,
|
||||
GasPriceKey,
|
||||
OffChainOracle,
|
||||
OnChainOracle,
|
||||
OnChainOracles,
|
||||
OffChainOracles,
|
||||
} from './types';
|
||||
|
||||
const defaultFastGas = 22;
|
||||
export class GasPriceOracle {
|
||||
lastGasPrice: GasPrice;
|
||||
offChainOracles: OffChainOracles = {};
|
||||
onChainOracles: OnChainOracles = {};
|
||||
configuration: Config = {
|
||||
chainId: ChainId.MAINNET,
|
||||
defaultRpc: 'https://api.mycryptoapi.com/eth',
|
||||
timeout: 10000,
|
||||
defaultFallbackGasPrices: {
|
||||
instant: defaultFastGas * 1.3,
|
||||
fast: defaultFastGas,
|
||||
standard: defaultFastGas * 0.85,
|
||||
low: defaultFastGas * 0.5,
|
||||
},
|
||||
};
|
||||
|
||||
constructor(options?: Options) {
|
||||
if (options) {
|
||||
Object.assign(this.configuration, options);
|
||||
}
|
||||
|
||||
this.configuration.defaultFallbackGasPrices = this.normalize(this.configuration.defaultFallbackGasPrices);
|
||||
|
||||
const network = NETWORKS[this.configuration.chainId];
|
||||
|
||||
if (network) {
|
||||
const { offChainOracles, onChainOracles } = network;
|
||||
this.offChainOracles = { ...offChainOracles };
|
||||
this.onChainOracles = { ...onChainOracles };
|
||||
}
|
||||
}
|
||||
|
||||
async askOracle(oracle: OffChainOracle): Promise<GasPrice> {
|
||||
const {
|
||||
name,
|
||||
url,
|
||||
instantPropertyName,
|
||||
fastPropertyName,
|
||||
standardPropertyName,
|
||||
lowPropertyName,
|
||||
denominator,
|
||||
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 this.normalize(gasPrices);
|
||||
} else {
|
||||
throw new Error(`Fetch gasPrice from ${name} oracle failed. Trying another one...`);
|
||||
}
|
||||
}
|
||||
async fetchGasPricesOffChain(): Promise<GasPrice> {
|
||||
for (const oracle of Object.values(this.offChainOracles)) {
|
||||
try {
|
||||
return await this.askOracle(oracle);
|
||||
} catch (e) {
|
||||
console.info(e.message);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
throw new Error('All oracles are down. Probably a network error.');
|
||||
}
|
||||
|
||||
async fetchMedianGasPriceOffChain(): Promise<GasPrice> {
|
||||
const promises: Promise<GasPrice>[] = [];
|
||||
for (const oracle of Object.values(this.offChainOracles) as Array<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 this.median(allGasPrices);
|
||||
}
|
||||
|
||||
median(gasPrices: GasPrice[]): GasPrice {
|
||||
const medianGasPrice: GasPrice = { instant: 0, fast: 0, standard: 0, low: 0 };
|
||||
|
||||
const results: { [key in 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 Array<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 this.normalize(medianGasPrice);
|
||||
}
|
||||
/**
|
||||
* Normalizes GasPrice values to Gwei. No more than 9 decimals basically
|
||||
* @param GasPrice _gas
|
||||
*/
|
||||
normalize(_gas: GasPrice): GasPrice {
|
||||
const format = {
|
||||
decimalSeparator: '.',
|
||||
groupSeparator: '',
|
||||
};
|
||||
const decimals = 9;
|
||||
|
||||
const gas: GasPrice = { ..._gas };
|
||||
for (const type of Object.keys(gas) as Array<keyof GasPrice>) {
|
||||
gas[type] = Number(new BigNumber(gas[type]).toFormat(decimals, format));
|
||||
}
|
||||
|
||||
return gas;
|
||||
}
|
||||
|
||||
async fetchGasPricesOnChain(): Promise<number> {
|
||||
for (const oracle of Object.values(this.onChainOracles)) {
|
||||
const { name, callData, contract, denominator, rpc } = oracle;
|
||||
const rpcUrl = rpc || this.configuration.defaultRpc;
|
||||
const body = {
|
||||
jsonrpc: '2.0',
|
||||
id: 1337,
|
||||
method: 'eth_call',
|
||||
params: [{ data: callData, to: contract }, 'latest'],
|
||||
};
|
||||
try {
|
||||
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
|
||||
const response = await axios.post(rpcUrl!, body, { timeout: this.configuration.timeout });
|
||||
if (response.status === 200) {
|
||||
const { result } = response.data;
|
||||
let fastGasPrice = new BigNumber(result);
|
||||
if (fastGasPrice.isZero()) {
|
||||
throw new Error(`${name} oracle provides corrupted values`);
|
||||
}
|
||||
fastGasPrice = fastGasPrice.div(denominator);
|
||||
return fastGasPrice.toNumber();
|
||||
} else {
|
||||
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.');
|
||||
}
|
||||
|
||||
async fetchGasPriceFromRpc(): Promise<number> {
|
||||
const rpcUrl = this.configuration.defaultRpc;
|
||||
const body = {
|
||||
jsonrpc: '2.0',
|
||||
id: 1337,
|
||||
method: 'eth_gasPrice',
|
||||
params: [],
|
||||
};
|
||||
try {
|
||||
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
|
||||
const response = await axios.post(rpcUrl!, body, { timeout: this.configuration.timeout });
|
||||
if (response.status === 200) {
|
||||
const { result } = response.data;
|
||||
let fastGasPrice = new BigNumber(result);
|
||||
if (fastGasPrice.isZero()) {
|
||||
throw new Error(`Default RPC provides corrupted values`);
|
||||
}
|
||||
fastGasPrice = fastGasPrice.div(1e9);
|
||||
return fastGasPrice.toNumber();
|
||||
}
|
||||
|
||||
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.');
|
||||
}
|
||||
}
|
||||
|
||||
async gasPrices(fallbackGasPrices?: GasPrice, median = true): Promise<GasPrice> {
|
||||
this.lastGasPrice = this.lastGasPrice || fallbackGasPrices || this.configuration.defaultFallbackGasPrices;
|
||||
|
||||
if (Object.keys(this.offChainOracles).length > 0) {
|
||||
try {
|
||||
this.lastGasPrice = median
|
||||
? await this.fetchMedianGasPriceOffChain()
|
||||
: await this.fetchGasPricesOffChain();
|
||||
return this.lastGasPrice;
|
||||
} catch (e) {
|
||||
console.log('Failed to fetch gas prices from offchain oracles...');
|
||||
}
|
||||
}
|
||||
|
||||
if (Object.keys(this.onChainOracles).length > 0) {
|
||||
try {
|
||||
const fastGas = await this.fetchGasPricesOnChain();
|
||||
this.lastGasPrice = this.categorize(fastGas);
|
||||
return this.lastGasPrice;
|
||||
} catch (e) {
|
||||
console.log('Failed to fetch gas prices from onchain oracles...');
|
||||
}
|
||||
}
|
||||
|
||||
try {
|
||||
const fastGas = await this.fetchGasPriceFromRpc();
|
||||
this.lastGasPrice = this.categorize(fastGas);
|
||||
return this.lastGasPrice;
|
||||
} catch (e) {
|
||||
console.log('Failed to fetch gas prices from default RPC. Last known gas will be returned');
|
||||
}
|
||||
return this.normalize(this.lastGasPrice);
|
||||
}
|
||||
|
||||
categorize(gasPrice: number): GasPrice {
|
||||
return this.normalize({
|
||||
instant: gasPrice * 1.3,
|
||||
fast: gasPrice,
|
||||
standard: gasPrice * 0.85,
|
||||
low: gasPrice * 0.5,
|
||||
});
|
||||
}
|
||||
|
||||
addOffChainOracle(oracle: OffChainOracle): void {
|
||||
this.offChainOracles[oracle.name] = oracle;
|
||||
}
|
||||
|
||||
addOnChainOracle(oracle: OnChainOracle): void {
|
||||
this.onChainOracles[oracle.name] = oracle;
|
||||
}
|
||||
|
||||
removeOnChainOracle(name: string): void {
|
||||
delete this.onChainOracles[name];
|
||||
}
|
||||
|
||||
removeOffChainOracle(name: string): void {
|
||||
delete this.offChainOracles[name];
|
||||
}
|
||||
}
|
||||
export * from '@/services/gas-price-oracle'
|
||||
|
||||
26
src/services/gas-estimation/constants.ts
Normal file
26
src/services/gas-estimation/constants.ts
Normal file
@ -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,
|
||||
}
|
||||
137
src/services/gas-estimation/eip1559.ts
Normal file
137
src/services/gas-estimation/eip1559.ts
Normal file
@ -0,0 +1,137 @@
|
||||
import BigNumber from 'bignumber.js'
|
||||
|
||||
import { FeeHistory, Block } from '@/types'
|
||||
import { Config, EstimateOracle, EstimatedGasPrice, CalculateFeesParams, GasEstimationOptionsPayload } from './types'
|
||||
|
||||
import { RpcFetcher } from '@/services'
|
||||
import { ChainId, NETWORKS } from '@/config'
|
||||
import { BG_ZERO, PERCENT_MULTIPLIER } from '@/constants'
|
||||
import { findMax, fromNumberToHex, fromWeiToGwei, getMedian } from '@/utils'
|
||||
|
||||
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 = {
|
||||
chainId: ChainId.MAINNET,
|
||||
blocksCount: NETWORKS[ChainId.MAINNET].blocksCount,
|
||||
percentile: NETWORKS[ChainId.MAINNET].percentile,
|
||||
fallbackGasPrices: undefined,
|
||||
}
|
||||
private fetcher: RpcFetcher
|
||||
|
||||
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 }
|
||||
}
|
||||
}
|
||||
|
||||
public async estimateFees(fallbackGasPrices?: EstimatedGasPrice): Promise<EstimatedGasPrice> {
|
||||
try {
|
||||
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],
|
||||
})
|
||||
|
||||
return this.calculateFees({ baseFee, feeHistory: data.result })
|
||||
} 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(DEFAULT_PRIORITY_FEE)])
|
||||
|
||||
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
|
||||
}
|
||||
}
|
||||
2
src/services/gas-estimation/index.ts
Normal file
2
src/services/gas-estimation/index.ts
Normal file
@ -0,0 +1,2 @@
|
||||
export * from './eip1559'
|
||||
export * from './types'
|
||||
37
src/services/gas-estimation/types.ts
Normal file
37
src/services/gas-estimation/types.ts
Normal file
@ -0,0 +1,37 @@
|
||||
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
|
||||
fallbackGasPrices: EstimatedGasPrice | undefined
|
||||
}
|
||||
|
||||
export type GasEstimationOptionsPayload = Options & {
|
||||
fetcher: RpcFetcher
|
||||
}
|
||||
|
||||
export type Config = Required<Options> & { fallbackGasPrices?: EstimatedGasPrice }
|
||||
export abstract class EstimateOracle {
|
||||
public configuration: Config
|
||||
public abstract estimateFees(fallbackGasPrices?: EstimatedGasPrice): Promise<EstimatedGasPrice>
|
||||
}
|
||||
96
src/services/gas-price-oracle/gas-price-oracle.ts
Normal file
96
src/services/gas-price-oracle/gas-price-oracle.ts
Normal file
@ -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,
|
||||
}
|
||||
}
|
||||
}
|
||||
2
src/services/gas-price-oracle/index.ts
Normal file
2
src/services/gas-price-oracle/index.ts
Normal file
@ -0,0 +1,2 @@
|
||||
export * from './gas-price-oracle'
|
||||
export * from './types'
|
||||
54
src/services/gas-price-oracle/types.ts
Normal file
54
src/services/gas-price-oracle/types.ts
Normal file
@ -0,0 +1,54 @@
|
||||
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
|
||||
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>
|
||||
}
|
||||
6
src/services/index.ts
Normal file
6
src/services/index.ts
Normal file
@ -0,0 +1,6 @@
|
||||
export * from './gas-price-oracle'
|
||||
|
||||
export * from './gas-estimation'
|
||||
export * from './legacy-gas-price'
|
||||
|
||||
export * from './rpcFetcher'
|
||||
10
src/services/legacy-gas-price/constants.ts
Normal file
10
src/services/legacy-gas-price/constants.ts
Normal file
@ -0,0 +1,10 @@
|
||||
const DEFAULT_GAS_PRICE = { instant: 0, fast: 0, standard: 0, low: 0 }
|
||||
|
||||
const MULTIPLIERS = {
|
||||
instant: 1.3,
|
||||
standard: 0.85,
|
||||
low: 0.5,
|
||||
fast: 1,
|
||||
}
|
||||
|
||||
export { MULTIPLIERS, DEFAULT_GAS_PRICE }
|
||||
2
src/services/legacy-gas-price/index.ts
Normal file
2
src/services/legacy-gas-price/index.ts
Normal file
@ -0,0 +1,2 @@
|
||||
export * from './legacy'
|
||||
export * from './types'
|
||||
292
src/services/legacy-gas-price/legacy.ts
Normal file
292
src/services/legacy-gas-price/legacy.ts
Normal file
@ -0,0 +1,292 @@
|
||||
import axios from 'axios'
|
||||
import BigNumber from 'bignumber.js'
|
||||
|
||||
import {
|
||||
GasPrice,
|
||||
GasPriceKey,
|
||||
LegacyOracle,
|
||||
OnChainOracle,
|
||||
OffChainOracle,
|
||||
LegacyOptions,
|
||||
OnChainOracles,
|
||||
OffChainOracles,
|
||||
LegacyOptionsPayload,
|
||||
GetGasPriceFromRespInput,
|
||||
} from './types'
|
||||
|
||||
import { RpcFetcher } from '@/services'
|
||||
import { ChainId, NETWORKS } from '@/config'
|
||||
import { GWEI, DEFAULT_TIMEOUT, GWEI_PRECISION } 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> = {
|
||||
chainId: ChainId.MAINNET,
|
||||
timeout: DEFAULT_TIMEOUT,
|
||||
defaultRpc: NETWORKS[ChainId.MAINNET].rpcUrl,
|
||||
fallbackGasPrices: LegacyGasPriceOracle.getMultipliedPrices(NETWORKS[ChainId.MAINNET].defaultGasPrice),
|
||||
}
|
||||
|
||||
private readonly fetcher: RpcFetcher
|
||||
|
||||
constructor({ fetcher, ...options }: LegacyOptionsPayload) {
|
||||
this.fetcher = fetcher
|
||||
if (options) {
|
||||
this.configuration = { ...this.configuration, ...options }
|
||||
}
|
||||
|
||||
const fallbackGasPrices =
|
||||
this.configuration.fallbackGasPrices || LegacyGasPriceOracle.getMultipliedPrices(NETWORKS[ChainId.MAINNET].defaultGasPrice)
|
||||
this.configuration.fallbackGasPrices = LegacyGasPriceOracle.normalize(fallbackGasPrices)
|
||||
|
||||
const network = NETWORKS[this.configuration.chainId]?.oracles
|
||||
if (network) {
|
||||
this.offChainOracles = { ...network.offChainOracles }
|
||||
this.onChainOracles = { ...network.onChainOracles }
|
||||
}
|
||||
}
|
||||
|
||||
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
|
||||
}
|
||||
|
||||
if (Object.keys(this.offChainOracles).length > 0) {
|
||||
try {
|
||||
this.lastGasPrice = await this.fetchGasPricesOffChain(shouldGetMedian)
|
||||
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)
|
||||
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)
|
||||
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...`)
|
||||
}
|
||||
}
|
||||
}
|
||||
78
src/services/legacy-gas-price/types.ts
Normal file
78
src/services/legacy-gas-price/types.ts
Normal file
@ -0,0 +1,78 @@
|
||||
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
|
||||
defaultRpc?: string
|
||||
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>
|
||||
}
|
||||
23
src/services/rpcFetcher/fetcher.ts
Normal file
23
src/services/rpcFetcher/fetcher.ts
Normal file
@ -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 })
|
||||
}
|
||||
}
|
||||
2
src/services/rpcFetcher/index.ts
Normal file
2
src/services/rpcFetcher/index.ts
Normal file
@ -0,0 +1,2 @@
|
||||
export * from './fetcher'
|
||||
export * from './types'
|
||||
7
src/services/rpcFetcher/types.ts
Normal file
7
src/services/rpcFetcher/types.ts
Normal file
@ -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
|
||||
}
|
||||
134
src/tests/complex.test.ts
Normal file
134
src/tests/complex.test.ts
Normal file
@ -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')
|
||||
})
|
||||
})
|
||||
134
src/tests/eip1559.test.ts
Normal file
134
src/tests/eip1559.test.ts
Normal file
@ -0,0 +1,134 @@
|
||||
// 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 { 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://ethereum-rpc.trustwalletapp.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.ARBITRUM || 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.ARBITRUM || 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)
|
||||
}
|
||||
})
|
||||
})
|
||||
})
|
||||
})
|
||||
|
||||
after('after', function () {
|
||||
after(function () {
|
||||
mockery.disable()
|
||||
mockery.deregisterMock('node-fetch')
|
||||
})
|
||||
})
|
||||
358
src/tests/legacy.test.ts
Normal file
358
src/tests/legacy.test.ts
Normal file
@ -0,0 +1,358 @@
|
||||
/* 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 { 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://ethereum-rpc.trustwalletapp.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()
|
||||
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')
|
||||
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')
|
||||
|
||||
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()
|
||||
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()
|
||||
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.getMultipliedPrices(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()
|
||||
})
|
||||
})
|
||||
|
||||
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')
|
||||
})
|
||||
})
|
||||
80
src/types.ts
80
src/types.ts
@ -1,46 +1,40 @@
|
||||
export type OffChainOracle = {
|
||||
name: string;
|
||||
url: string;
|
||||
instantPropertyName: string;
|
||||
fastPropertyName: string;
|
||||
standardPropertyName: string;
|
||||
lowPropertyName: string;
|
||||
denominator: number;
|
||||
additionalDataProperty: string | null;
|
||||
};
|
||||
import { AllOracles } from './services/legacy-gas-price'
|
||||
|
||||
export type OffChainOracles = { [key: string]: OffChainOracle };
|
||||
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 type OnChainOracle = {
|
||||
name: string;
|
||||
rpc?: string;
|
||||
contract: string;
|
||||
callData: string;
|
||||
denominator: string;
|
||||
};
|
||||
export interface FeeHistory {
|
||||
baseFeePerGas: string[]
|
||||
gasUsedRatio: number[]
|
||||
reward?: string[][]
|
||||
oldestBlock: string
|
||||
}
|
||||
|
||||
export type OnChainOracles = { [key: string]: OnChainOracle };
|
||||
|
||||
export type AllOracles = {
|
||||
offChainOracles: OffChainOracles;
|
||||
onChainOracles: OnChainOracles;
|
||||
};
|
||||
|
||||
export type GasPrice = {
|
||||
[key in GasPriceKey]: number;
|
||||
};
|
||||
|
||||
export type GasPriceKey = 'instant' | 'fast' | 'standard' | 'low';
|
||||
|
||||
export type Options = {
|
||||
chainId?: number;
|
||||
defaultRpc?: string;
|
||||
timeout?: number;
|
||||
defaultFallbackGasPrices?: GasPrice;
|
||||
};
|
||||
|
||||
export type Config = Required<Options>;
|
||||
|
||||
export type NetworkConfig = {
|
||||
[key in number]: AllOracles;
|
||||
};
|
||||
export type NetworksConfig = {
|
||||
oracles: AllOracles
|
||||
rpcUrl: string
|
||||
defaultGasPrice: number
|
||||
maxGasPrice: number
|
||||
blocksCount: number
|
||||
percentile: number
|
||||
}
|
||||
|
||||
20
src/utils/crypto.ts
Normal file
20
src/utils/crypto.ts
Normal file
@ -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 }
|
||||
2
src/utils/index.ts
Normal file
2
src/utils/index.ts
Normal file
@ -0,0 +1,2 @@
|
||||
export * from './math'
|
||||
export * from './crypto'
|
||||
45
src/utils/math.ts
Normal file
45
src/utils/math.ts
Normal file
@ -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 }
|
||||
@ -1,333 +0,0 @@
|
||||
/* eslint-disable @typescript-eslint/no-non-null-assertion */
|
||||
/* eslint-disable @typescript-eslint/no-var-requires */
|
||||
import chai from 'chai';
|
||||
import mockery from 'mockery';
|
||||
import BigNumber from 'bignumber.js';
|
||||
|
||||
import { ChainId, NETWORKS } from '../src/config';
|
||||
import { GasPriceOracle } from '../src/index';
|
||||
|
||||
import { GasPrice, OffChainOracle } from '../src/types';
|
||||
|
||||
chai.use(require('chai-as-promised'));
|
||||
chai.should();
|
||||
|
||||
let oracle = new GasPriceOracle();
|
||||
let { onChainOracles, offChainOracles } = oracle;
|
||||
|
||||
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);
|
||||
});
|
||||
|
||||
describe('constructor', function () {
|
||||
it('should set default values', async function () {
|
||||
oracle.configuration.defaultRpc.should.be.equal('https://api.mycryptoapi.com/eth');
|
||||
oracle.configuration.timeout.should.be.equal(10000);
|
||||
});
|
||||
|
||||
it('should set passed values', async function () {
|
||||
const newOracle = new GasPriceOracle({ timeout: 1337 });
|
||||
newOracle.configuration.defaultRpc.should.be.equal('https://api.mycryptoapi.com/eth');
|
||||
newOracle.configuration.timeout.should.be.equal(1337);
|
||||
});
|
||||
});
|
||||
|
||||
describe('fetchGasPricesOffChain', function () {
|
||||
it('should work', async function () {
|
||||
const gas: GasPrice = await oracle.fetchGasPricesOffChain();
|
||||
|
||||
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); // greater than or equal to the given number.
|
||||
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('../src/index');
|
||||
oracle = new GasPriceOracle();
|
||||
await oracle
|
||||
.fetchGasPricesOffChain()
|
||||
.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.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 = 'https://ethereum-rpc.trustwalletapp.com';
|
||||
const oracle = new GasPriceOracle({ defaultRpc: rpc });
|
||||
oracle.configuration.defaultRpc.should.be.equal(rpc);
|
||||
const gas: number = await oracle.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.fetchGasPricesOnChain();
|
||||
oracle.removeOnChainOracle('chainlink');
|
||||
await oracle
|
||||
.fetchGasPricesOnChain()
|
||||
.should.be.rejectedWith('All oracles are down. Probably a network error.');
|
||||
});
|
||||
|
||||
it('should add oracle', async function () {
|
||||
const { chainlink } = onChainOracles;
|
||||
await oracle.fetchGasPricesOnChain();
|
||||
oracle.removeOnChainOracle('chainlink');
|
||||
await oracle
|
||||
.fetchGasPricesOnChain()
|
||||
.should.be.rejectedWith('All oracles are down. Probably a network error.');
|
||||
oracle.addOnChainOracle(chainlink);
|
||||
const gas: number = await oracle.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('../src/index');
|
||||
oracle = new GasPriceOracle();
|
||||
await oracle
|
||||
.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.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 = 'https://ethereum-rpc.trustwalletapp.com';
|
||||
const oracle = new GasPriceOracle({ defaultRpc: rpc });
|
||||
oracle.configuration.defaultRpc.should.be.equal(rpc);
|
||||
const gas: number = await oracle.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('../src/index');
|
||||
oracle = new GasPriceOracle();
|
||||
await oracle
|
||||
.fetchGasPriceFromRpc()
|
||||
.should.be.rejectedWith('Default RPC is down. Probably a network error.');
|
||||
mockery.disable();
|
||||
});
|
||||
});
|
||||
|
||||
describe('gasPrice', function () {
|
||||
it('should work', async function () {
|
||||
const gas: GasPrice = await oracle.gasPrices();
|
||||
|
||||
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('../src/index');
|
||||
oracle = new GasPriceOracle();
|
||||
const gas: GasPrice = await oracle.gasPrices();
|
||||
|
||||
gas.instant.should.be.equal(28.6);
|
||||
gas.fast.should.be.equal(22);
|
||||
gas.standard.should.be.equal(18.7);
|
||||
gas.low.should.be.equal(11);
|
||||
mockery.disable();
|
||||
});
|
||||
|
||||
it('should fallback to set values', async function () {
|
||||
mockery.enable({ useCleanCache: true, warnOnUnregistered: false });
|
||||
const { GasPriceOracle } = require('../src/index');
|
||||
oracle = new GasPriceOracle();
|
||||
const gas: GasPrice = await oracle.gasPrices({ instant: 50, fast: 21, standard: 10, low: 3 });
|
||||
|
||||
gas.instant.should.be.equal(50);
|
||||
gas.fast.should.be.equal(21);
|
||||
gas.standard.should.be.equal(10);
|
||||
gas.low.should.be.equal(3);
|
||||
mockery.disable();
|
||||
});
|
||||
});
|
||||
|
||||
describe('median', function () {
|
||||
it('should work', async 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 = await oracle.median([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 = await oracle.median([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.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); // greater than or equal to the given number.
|
||||
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 = {
|
||||
instant: 1.1,
|
||||
fast: 2.12345678901,
|
||||
standard: 3.12345678901,
|
||||
low: 3.1234567890123456789,
|
||||
};
|
||||
|
||||
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 });
|
||||
|
||||
const { GasPriceOracle } = require('../src/index');
|
||||
oracle = new GasPriceOracle({
|
||||
defaultFallbackGasPrices: wrongDecimalsGas,
|
||||
});
|
||||
const { configuration } = oracle;
|
||||
|
||||
checkDecimals(configuration.defaultFallbackGasPrices);
|
||||
|
||||
mockery.disable();
|
||||
});
|
||||
|
||||
it('fallback should be normalized', async function () {
|
||||
mockery.enable({ useCleanCache: true, warnOnUnregistered: false });
|
||||
|
||||
const { GasPriceOracle } = require('../src/index');
|
||||
oracle = new GasPriceOracle();
|
||||
|
||||
const gas = await oracle.gasPrices(wrongDecimalsGas);
|
||||
|
||||
checkDecimals(gas);
|
||||
mockery.disable();
|
||||
});
|
||||
|
||||
it('rpc fallback should be normalized', async function () {
|
||||
const { GasPriceOracle } = require('../src/index');
|
||||
oracle = new GasPriceOracle({ chainId: 42161, defaultRpc: 'https://arb1.arbitrum.io/rpc' });
|
||||
|
||||
const gas = await oracle.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);
|
||||
|
||||
for (const o of Object.values(offChainOracles) as Array<OffChainOracle>) {
|
||||
it(`check ${o.name}`, async function () {
|
||||
try {
|
||||
const gas: GasPrice = await oracle.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); // greater than or equal to the given number.
|
||||
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');
|
||||
});
|
||||
});
|
||||
9
tsconfig.esm.json
Normal file
9
tsconfig.esm.json
Normal file
@ -0,0 +1,9 @@
|
||||
{
|
||||
"extends": "./tsconfig",
|
||||
"compilerOptions": {
|
||||
"declaration": false,
|
||||
"target": "es2015",
|
||||
"module": "es2015",
|
||||
"outDir": "lib/esm"
|
||||
}
|
||||
}
|
||||
@ -1,69 +1,33 @@
|
||||
{
|
||||
"compilerOptions": {
|
||||
/* Basic Options */
|
||||
"target": "es2017" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */,
|
||||
"module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
|
||||
"lib": [
|
||||
"es2017",
|
||||
"esnext.asynciterable",
|
||||
"es2019",
|
||||
"ES2020.Promise"
|
||||
] /* Specify library files to be included in the compilation. */,
|
||||
"outDir": "./lib" /* Redirect output structure to the directory. */,
|
||||
"strict": true /* Enable all strict type-checking options. */,
|
||||
"strictPropertyInitialization": false /* Enable strict checking of property initialization in classes. */,
|
||||
"esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
|
||||
"declaration": true /* Generates corresponding '.d.ts' file. */,
|
||||
"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,
|
||||
// "allowJs": true, /* Allow javascript files to be compiled. */
|
||||
// "checkJs": true, /* Report errors in .js files. */
|
||||
// "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
|
||||
// "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */
|
||||
// "sourceMap": true, /* Generates corresponding '.map' file. */
|
||||
// "outFile": "./", /* Concatenate and emit output to single file. */
|
||||
// "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
|
||||
// "composite": true, /* Enable project compilation */
|
||||
// "removeComments": true, /* Do not emit comments to output. */
|
||||
// "noEmit": true, /* Do not emit outputs. */
|
||||
// "importHelpers": true, /* Import emit helpers from 'tslib'. */
|
||||
// "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
|
||||
// "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
|
||||
|
||||
/* Strict Type-Checking Options */
|
||||
// "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */
|
||||
// "strictNullChecks": true, /* Enable strict null checks. */
|
||||
// "strictFunctionTypes": true, /* Enable strict checking of function types. */
|
||||
// "strictBindCallApply": true, /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
|
||||
// "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */
|
||||
// "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */
|
||||
|
||||
/* Additional Checks */
|
||||
// "noUnusedLocals": true, /* Report errors on unused locals. */
|
||||
// "noUnusedParameters": true, /* Report errors on unused parameters. */
|
||||
// "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
|
||||
// "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
|
||||
|
||||
/* Module Resolution Options */
|
||||
// "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
|
||||
// "baseUrl": "./", /* Base directory to resolve non-absolute module names. */
|
||||
// "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
|
||||
// "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */
|
||||
// "typeRoots": [], /* List of folders to include type definitions from. */
|
||||
// "types": [], /* Type declaration files to be included in compilation. */
|
||||
// "allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
|
||||
// "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */
|
||||
|
||||
/* Source Map Options */
|
||||
// "sourceRoot": "", /* Specify the location where debugger should locate TypeScript files instead of source locations. */
|
||||
// "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
|
||||
// "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */
|
||||
// "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
|
||||
|
||||
/* Experimental Options */
|
||||
"experimentalDecorators": true /* Enables experimental support for ES7 decorators. */,
|
||||
"emitDecoratorMetadata": true /* Enables experimental support for emitting type metadata for decorators. */,
|
||||
"plugins": []
|
||||
"resolveJsonModule": true,
|
||||
"isolatedModules": true,
|
||||
"baseUrl": ".",
|
||||
"paths": {
|
||||
"@/*": ["./src/*"]
|
||||
},
|
||||
"types": ["@types/node"]
|
||||
},
|
||||
"include": ["src"],
|
||||
"exclude": ["node_modules", "tests"]
|
||||
"include": ["src/**/*"],
|
||||
"exclude": ["node_modules", "src/tests"]
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user