From 3b7e6ffd0df3981c3aef2bf0ff128a0b8c66b1be Mon Sep 17 00:00:00 2001
From: Everton Fraga <ev@ethereum.org>
Date: Mon, 21 Sep 2020 16:09:03 -0400
Subject: [PATCH] ethash: lint

---
 packages/ethash/.eslintrc.js       |  3 ++-
 packages/ethash/src/index.ts       | 12 ++++++------
 packages/ethash/src/util.ts        |  2 +-
 packages/ethash/test/block.spec.ts |  2 +-
 4 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/packages/ethash/.eslintrc.js b/packages/ethash/.eslintrc.js
index 02ebf6c05c..3ae3d8c0dd 100644
--- a/packages/ethash/.eslintrc.js
+++ b/packages/ethash/.eslintrc.js
@@ -1,3 +1,4 @@
 module.exports = {
-  extends: "@ethereumjs/eslint-config-defaults"
+  extends: "@ethereumjs/eslint-config-defaults",
+  ignorePatterns: ['examples']
 }
diff --git a/packages/ethash/src/index.ts b/packages/ethash/src/index.ts
index 1393e8cae7..75b9933398 100644
--- a/packages/ethash/src/index.ts
+++ b/packages/ethash/src/index.ts
@@ -5,7 +5,7 @@ import {
   rlphash,
   zeros,
   bufferToInt,
-  TWO_POW256
+  TWO_POW256,
 } from 'ethereumjs-util'
 import {
   params,
@@ -15,7 +15,7 @@ import {
   getEpoc,
   getCacheSize,
   getFullSize,
-  getSeed
+  getSeed,
 } from './util'
 import type { LevelUp } from 'levelup'
 import type { Block, BlockHeader } from '@ethereumjs/block'
@@ -32,7 +32,7 @@ export default class Ethash {
 
   constructor(cacheDB?: LevelUp) {
     this.dbOpts = {
-      valueEncoding: 'json'
+      valueEncoding: 'json',
     }
     this.cacheDB = cacheDB
     this.cache = []
@@ -93,7 +93,7 @@ export default class Ethash {
         (fnv(i ^ s.readUInt32LE(0), mix.readUInt32LE((i % w) * 4)) %
           Math.floor(n / mixhashes)) *
         mixhashes
-      let newdata = []
+      const newdata = []
       for (let j = 0; j < mixhashes; j++) {
         newdata.push(this.calcDatasetItem(p + j))
       }
@@ -110,7 +110,7 @@ export default class Ethash {
 
     return {
       mix: cmix,
-      hash: keccak256(Buffer.concat([s, cmix]))
+      hash: keccak256(Buffer.concat([s, cmix])),
     }
   }
 
@@ -181,7 +181,7 @@ export default class Ethash {
           cacheSize: this.cacheSize,
           fullSize: this.fullSize,
           seed: this.seed,
-          cache: cache
+          cache: cache,
         },
         this.dbOpts
       )
diff --git a/packages/ethash/src/util.ts b/packages/ethash/src/util.ts
index 65187da42c..caa6dc0eea 100644
--- a/packages/ethash/src/util.ts
+++ b/packages/ethash/src/util.ts
@@ -13,7 +13,7 @@ export const params = {
   DATASET_PARENTS: 256, // number of parents of each dataset element
   CACHE_ROUNDS: 3, // number of rounds in cache production
   ACCESSES: 64,
-  WORD_BYTES: 4
+  WORD_BYTES: 4,
 }
 
 export function getCacheSize(epoc: number) {
diff --git a/packages/ethash/test/block.spec.ts b/packages/ethash/test/block.spec.ts
index f4e75d5b94..98eae4b76b 100644
--- a/packages/ethash/test/block.spec.ts
+++ b/packages/ethash/test/block.spec.ts
@@ -7,7 +7,7 @@ const cacheDB = level()
 
 const {
   validBlockRlp,
-  invalidBlockRlp
+  invalidBlockRlp,
 } = require('./ethash_block_rlp_tests.json')
 
 tape('Verify POW for valid and invalid blocks', async function (t) {