Merge pull request #261 from Tenderly/v4-removing-native-js-dependencies

V4 Removing native js dependencies

.babelrc

@@ -0,0 +1,7 @@
+{
+  "presets": [
+    [
+      "env"
+    ]
+  ]
+}

.travis.yml

@@ -1,19 +1,19 @@
 language: node_js
 node_js:
-  - "0.11"
-  - "0.12"
-  - "4"
-  - "5"
+  - "6"
+  - "8"
+  - "10"
+  - "12"
 env:
   - CXX=g++-4.8
+services:
+  - xvfb
 addons:
   apt:
     sources:
     - ubuntu-toolchain-r-test
     packages:
     - g++-4.8
-before_install:
-  - sh -e /etc/init.d/xvfb start
 env:
   global:
     - DISPLAY=:99.0
@@ -23,9 +23,9 @@ matrix:
   fast_finish: true
   include:
     - os: linux
-      node_js: "4"
+      node_js: "8"
       env: CXX=g++-4.8 TEST_SUITE=coveralls
     - os: linux
-      node_js: "4"
+      node_js: "8"
       env: CXX=g++-4.8 TEST_SUITE=lint
 script: npm run $TEST_SUITE

index.js

@@ -1,5 +1,5 @@
-const SHA3 = require('keccakjs')
-const secp256k1 = require('secp256k1')
+const { keccak224, keccak384, keccak256: k256, keccak512 } = require('ethereum-cryptography/keccak')
+const secp256k1 = require('./secp256k1-adapter')
 const assert = require('assert')
 const rlp = require('rlp')
 const BN = require('bn.js')
@@ -250,11 +250,23 @@ exports.sha3 = function (a, bytes) {
   a = exports.toBuffer(a)
   if (!bytes) bytes = 256
 
-  var h = new SHA3(bytes)
-  if (a) {
-    h.update(a)
+  switch (bytes) {
+    case 224: {
+      return keccak224(a)
+    }
+    case 256: {
+      return k256(a)
+    }
+    case 384: {
+      return keccak384(a)
+    }
+    case 512: {
+      return keccak512(a)
+    }
+    default: {
+      throw new Error(`Invalid algorithm: keccak${bytes}`)
+    }
   }
-  return new Buffer(h.digest('hex'), 'hex')
 }
 
 /**

package.json

@@ -2,15 +2,19 @@
   "name": "ethereumjs-util",
   "version": "4.5.0",
   "description": "a collection of utility functions for Ethereum",
-  "main": "index.js",
+  "main": "dist/index.js",
+  "files": [
+    "dist"
+  ],
   "scripts": {
     "coverage": "istanbul cover _mocha",
     "coveralls": "npm run coverage && coveralls <coverage/lcov.info",
     "lint": "standard",
-    "prepublish": "npm run lint && npm run test",
+    "prepublish": "npm run lint && npm run build:dist && npm run test",
     "test": "npm run test:node && npm run test:browser",
     "test:browser": "karma start karma.conf.js",
     "test:node": "istanbul test mocha -- --reporter spec",
+    "build:dist": "babel index.js secp256k1-adapter.js secp256k1-lib/* --source-root ./ -d ./dist",
     "build:docs": "documentation --github  -f md ./index.js > ./docs/index.md"
   },
   "repository": {
@@ -33,11 +37,13 @@
   "dependencies": {
     "bn.js": "^4.8.0",
     "create-hash": "^1.1.2",
-    "keccakjs": "^0.2.0",
     "rlp": "^2.0.0",
-    "secp256k1": "^3.0.1"
+    "ethereum-cryptography": "^0.1.3",
+    "elliptic": "^6.5.2"
   },
   "devDependencies": {
+    "babel-cli": "^6.26.0",
+    "babel-preset-env": "^1.6.1",
     "browserify": "^13.0.0",
     "coveralls": "^2.11.4",
     "documentation": "^3.0.4",
@@ -56,6 +62,9 @@
     "globals": [
       "describe",
       "it"
+    ],
+    "ignore": [
+      "dist/**"
     ]
   }
 }