prettier + wordings

.prettierrc

@@ -0,0 +1,6 @@
+{
+  "arrowParens": "avoid",
+  "singleQuote": true,
+  "printWidth": 110,
+  "trailingComma": "all"
+}

.vscode/launch.json

@@ -1,24 +0,0 @@
-{
-    // Use IntelliSense to learn about possible attributes.
-    // Hover to view descriptions of existing attributes.
-    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
-    "version": "0.2.0",
-    "configurations": [
-        {
-            "type": "node",
-            "request": "launch",
-            "name": "Mocha Current File",
-            "program": "${workspaceFolder}/node_modules/mocha/bin/_mocha",
-            "args": [
-              "--no-timeouts",
-              "--colors",
-              "${file}",
-              "--require",
-              "ts-node/register"
-            ],
-            "console": "integratedTerminal",
-            "sourceMaps": true,
-            "internalConsoleOptions": "neverOpen"
-      }
-    ]
-}

README.md

@@ -1,55 +1,66 @@
 # Gas Price Oracle library for Ethereum dApps [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/peppersec/gas-price-oracle/Node.js%20CI)](https://github.com/peppersec/gas-price-oracle/actions) [![npm](https://img.shields.io/npm/v/gas-price-oracle)](https://www.npmjs.com/package/gas-price-oracle)
+
 A library that has a collection of onchain and offchain gas price oracle URLs
 
 Current offchain list:
+
 - https://ethgasstation.info/json/ethgasAPI.json
 - https://gas-oracle.zoltu.io/
 - https://www.etherchain.org/api/gasPriceOracle
 - https://gasprice.poa.network/
 
 Current onchain list:
+
 - [chainlink](https://etherscan.io/address/0xA417221ef64b1549575C977764E651c9FAB50141)
 
 ## Installation
+
 `npm i gas-price-oracle`
 
 ## Import
+
 ```js
 const { GasPriceOracle } = require('gas-price-oracle');
 ```
+
 ## Usage
+
 ### Basic
 
 ```js
-
 const options = {
-    defaultRpc: 'https://api.mycryptoapi.com/eth'
-}
+  defaultRpc: 'https://api.mycryptoapi.com/eth',
+};
 const oracle = new GasPriceOracle(options);
 // optional fallbackGasPrices
 const fallbackGasPrices = {
-    instant: 70, fast: 31, standard: 20, low: 7
-}
-oracle.gasPrices(fallbackGasPrices).then((gasPrices) => {
-    console.log(gasPrices) // { instant: 50, fast: 21, standard: 10, low: 3 }
+  instant: 70,
+  fast: 31,
+  standard: 20,
+  low: 7,
+};
+oracle.gasPrices(fallbackGasPrices).then(gasPrices => {
+  console.log(gasPrices); // { instant: 50, fast: 21, standard: 10, low: 3 }
 });
 ```
 
 ### Offchain oracles only
+
 ```js
 const oracle = new GasPriceOracle();
 
-oracle.fetchGasPricesOffChain().then((gasPrices) => {
-    console.log(gasPrices) // { instant: 50, fast: 21, standard: 10, low: 3 }
+oracle.fetchGasPricesOffChain().then(gasPrices => {
+  console.log(gasPrices); // { instant: 50, fast: 21, standard: 10, low: 3 }
 });
 ```
 
 ### Custom RPC URL for onchain oracles
+
 ```js
-const defaultRpc = 'https://mainnet.infura.io/v3/<API_KEY>'
+const defaultRpc = 'https://mainnet.infura.io/v3/<API_KEY>';
 const oracle = new GasPriceOracle({ defaultRpc });
 
-oracle.fetchGasPricesOnChain().then((gasPrices) => {
-    console.log(gasPrices) // 21
+oracle.fetchGasPricesOnChain().then(gasPrices => {
+  console.log(gasPrices); // 21
 });
 ```

package.json

@@ -14,7 +14,10 @@
   "scripts": {
     "test": "mocha --timeout 30000 -r ts-node/register tests/*.test.ts",
     "build": "tsc",
-    "lint": "tslint -p tsconfig.json"
+    "tslint": "tslint -p tsconfig.json",
+    "prettier:check": "npx prettier --check . --config .prettierrc",
+    "prettier:fix": "npx prettier --write . --config .prettierrc",
+    "lint": "yarn tslint && yarn prettier:check"
   },
   "author": "Alexey Pertsev <alexey@peppersec.com> (https://peppersec.com)",
   "keywords": [
@@ -33,9 +36,11 @@
     "chai-as-promised": "^7.1.1",
     "mocha": "^7.2.0",
     "mockery": "^2.1.0",
-    "tslint": "^6.1.2",
-    "tslint-config-standard": "^9.0.0",
+    "prettier": "^2.1.2",
     "ts-node": "^8.10.1",
+    "tslint": "^6.1.2",
+    "tslint-config-prettier": "^1.18.0",
+    "tslint-plugin-prettier": "^2.3.0",
     "typescript": "^3.9.3"
   },
   "dependencies": {

src/config.ts

@@ -1,4 +1,3 @@
-
 import { OffChainOracle, OnChainOracle } from './types';
 
 const ethgasstation: OffChainOracle = {
@@ -8,7 +7,7 @@ const ethgasstation: OffChainOracle = {
   fastPropertyName: 'fast',
   standardPropertyName: 'average',
   lowPropertyName: 'safeLow',
-  denominator: 10
+  denominator: 10,
 };
 
 const zoltu: OffChainOracle = {
@@ -18,7 +17,7 @@ const zoltu: OffChainOracle = {
   fastPropertyName: 'percentile_90',
   standardPropertyName: 'percentile_60',
   lowPropertyName: 'percentile_30',
-  denominator: 1
+  denominator: 1,
 };
 
 const etherchain: OffChainOracle = {
@@ -28,7 +27,7 @@ const etherchain: OffChainOracle = {
   fastPropertyName: 'fast',
   standardPropertyName: 'standard',
   lowPropertyName: 'safeLow',
-  denominator: 1
+  denominator: 1,
 };
 
 const poa: OffChainOracle = {
@@ -38,25 +37,28 @@ const poa: OffChainOracle = {
   fastPropertyName: 'fast',
   standardPropertyName: 'standard',
   lowPropertyName: 'slow',
-  denominator: 1
+  denominator: 1,
 };
 
 const chainlink: OnChainOracle = {
   name: 'chainlink',
   callData: '0x50d25bcd',
   contract: '0x169E633A2D1E6c10dD91238Ba11c4A708dfEF37C',
-  denominator: '1000000000'
+  denominator: '1000000000',
 };
 
 export const offChainOracles: { [key: string]: OffChainOracle } = {
-  ethgasstation, zoltu, poa, etherchain
+  ethgasstation,
+  zoltu,
+  poa,
+  etherchain,
 };
 
 export const onChainOracles: { [key: string]: OnChainOracle } = {
-  chainlink
+  chainlink,
 };
 
 export default {
   offChainOracles,
-  onChainOracles
+  onChainOracles,
 };

src/index.ts

@@ -17,7 +17,15 @@ export class GasPriceOracle {
 
   async fetchGasPricesOffChain(): Promise<GasPrice> {
     for (let oracle of Object.values(this.offChainOracles)) {
-      const { name, url, instantPropertyName, fastPropertyName, standardPropertyName, lowPropertyName, denominator } = oracle;
+      const {
+        name,
+        url,
+        instantPropertyName,
+        fastPropertyName,
+        standardPropertyName,
+        lowPropertyName,
+        denominator,
+      } = oracle;
       try {
         const response = await axios.get(url, { timeout: 10000 });
         if (response.status === 200) {
@@ -29,7 +37,7 @@ export class GasPriceOracle {
             instant: parseFloat(gas[instantPropertyName]) / denominator,
             fast: parseFloat(gas[fastPropertyName]) / denominator,
             standard: parseFloat(gas[standardPropertyName]) / denominator,
-            low: parseFloat(gas[lowPropertyName]) / denominator
+            low: parseFloat(gas[lowPropertyName]) / denominator,
           };
           return gasPrices;
         } else {
@@ -39,7 +47,7 @@ export class GasPriceOracle {
         console.error(e.message);
       }
     }
-    throw new Error('All oracles are down. Probaly network error.');
+    throw new Error('All oracles are down. Probably a network error.');
   }
 
   async fetchGasPricesOnChain(): Promise<number> {
@@ -51,7 +59,7 @@ export class GasPriceOracle {
         jsonrpc: '2.0',
         id: 1337,
         method: 'eth_call',
-        params: [{ 'data': callData, 'to': contract }, 'latest']
+        params: [{ data: callData, to: contract }, 'latest'],
       };
       try {
         const response = await axios.post(rpc, body, { timeout: 10000 });
@@ -70,7 +78,7 @@ export class GasPriceOracle {
         console.error(e.message);
       }
     }
-    throw new Error('All oracles are down. Probaly network error.');
+    throw new Error('All oracles are down. Probably a network error.');
   }
 
   async gasPrices(fallbackGasPrices?: GasPrice): Promise<GasPrice> {
@@ -79,7 +87,7 @@ export class GasPriceOracle {
       instant: defaultFastGas * 1.3,
       fast: defaultFastGas,
       standard: defaultFastGas * 0.85,
-      low: defaultFastGas * 0.5
+      low: defaultFastGas * 0.5,
     };
     this.lastGasPrice = this.lastGasPrice || fallbackGasPrices || defaultFallbackGasPrices;
     try {
@@ -95,7 +103,7 @@ export class GasPriceOracle {
         instant: fastGas * 1.3,
         fast: fastGas,
         standard: fastGas * 0.85,
-        low: fastGas * 0.5
+        low: fastGas * 0.5,
       };
       return this.lastGasPrice;
     } catch (e) {

tests/index.test.ts

@@ -11,11 +11,11 @@ let oracle = new GasPriceOracle();
 before('before', function () {
   let axiosMock = {
     get: () => {
-      throw new Error('axios GET methdod is mocked for tests');
+      throw new Error('axios GET method is mocked for tests');
     },
     post: () => {
-      throw new Error('axios POST methdod is mocked for tests');
-    }
+      throw new Error('axios POST method is mocked for tests');
+    },
   };
   mockery.registerMock('axios', axiosMock);
 });
@@ -43,7 +43,9 @@ describe('fetchGasPricesOffChain', 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. Probaly network error.');
+    await oracle
+      .fetchGasPricesOffChain()
+      .should.be.rejectedWith('All oracles are down. Probably a network error.');
     mockery.disable();
   });
 });
@@ -71,14 +73,18 @@ describe('fetchGasPricesOnChain', function () {
   it('should remove oracle', async function () {
     await oracle.fetchGasPricesOnChain();
     oracle.removeOnChainOracle('chainlink');
-    await oracle.fetchGasPricesOnChain().should.be.rejectedWith('All oracles are down. Probaly network error.');
+    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. Probaly network error.');
+    await oracle
+      .fetchGasPricesOnChain()
+      .should.be.rejectedWith('All oracles are down. Probably a network error.');
     oracle.addOnChainOracle(chainlink);
     const gas: number = await oracle.fetchGasPricesOnChain();
 
@@ -90,10 +96,11 @@ describe('fetchGasPricesOnChain', 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. Probaly network error.');
+    await oracle
+      .fetchGasPricesOnChain()
+      .should.be.rejectedWith('All oracles are down. Probably a network error.');
     mockery.disable();
   });
-
 });
 
 describe('gasPrice', function () {

tsconfig.json

@@ -8,11 +8,11 @@
       "esnext.asynciterable",
       "es2019"
     ] /* Specify library files to be included in the compilation. */,
-    "outDir": "./lib",                        /* Redirect output structure to the directory. */
+    "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. */
+    "declaration": true /* Generates corresponding '.d.ts' file. */,
     // "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'. */

tslint.json

@@ -1,10 +1,12 @@
 {
-  "extends": "tslint-config-standard",
+  "extends": "tslint-config-prettier",
   "defaultSeverity": "error",
   "rules": {
     "semicolon": [true, "always"],
-    "space-before-function-paren": [true, {"anonymous": "always", "named": "never", "asyncArrow": "always"}],
+    "space-before-function-paren": [
+      true,
+      { "anonymous": "always", "named": "never", "asyncArrow": "always" }
+    ],
     "type-literal-delimiter": true
   }
 }
-