From 7b9de1b259840687d940eaeeaf02b0a949fcf609 Mon Sep 17 00:00:00 2001
From: Iuri Matias <iuri.matias@gmail.com>
Date: Mon, 23 May 2016 16:00:54 -0400
Subject: [PATCH] make ethersim optional

---
 bin/embark   |  8 +++++++-
 lib/test.js  | 12 +++++++++++-
 package.json |  3 +--
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/bin/embark b/bin/embark
index c227bc88..9d545f49 100755
--- a/bin/embark
+++ b/bin/embark
@@ -6,7 +6,6 @@ var wrench = require('wrench');
 var grunt = require('grunt');
 require('shelljs/global');
 var readYaml = require('read-yaml');
-var EtherSim = require('ethersim');
 var Embark = require('..');
 
 var run = function(cmd) {
@@ -175,6 +174,13 @@ program.command('meteor_demo').description('create a working meteor dapp with a
 });
 
 program.command('simulator').description('run a fast ethereum rpc simulator').action(function() {
+  try {
+    var EtherSim = require('ethersim');
+  } catch(e) {
+    console.log('EtherSim not found; Please install it with "npm install ethersim --save"');
+    console.log('For more information see https://github.com/iurimatias/ethersim');
+    exit();
+  }
   EtherSim.startServer();
 });
 
diff --git a/lib/test.js b/lib/test.js
index bb7e8362..2ba0a05d 100644
--- a/lib/test.js
+++ b/lib/test.js
@@ -1,7 +1,17 @@
-var ethersim = require('ethersim');
+try {
+  var ethersim = require('ethersim');
+} catch(e) {
+  var ethersim = false;
+}
 var web3 = require('web3');
 
 Test = function(contractFiles, blockchainFile, contractFile, _env) {
+  if (ethersim === false) {
+    console.log('EtherSim not found; Please install it with "npm install ethersim --save"');
+    console.log('For more information see https://github.com/iurimatias/ethersim');
+    exit();
+  }
+
   this.env = _env || 'development';
   this.web3 = web3;
   this.web3.setProvider(ethersim.web3Provider());
diff --git a/package.json b/package.json
index 26cd0add..0b2903f8 100644
--- a/package.json
+++ b/package.json
@@ -24,8 +24,7 @@
     "toposort": "^0.2.10",
     "web3": "^0.15.0",
     "bignumber.js": "debris/bignumber.js#master",
-    "wrench": "^1.5.8",
-    "ethersim": "^0.3.0"
+    "wrench": "^1.5.8"
   },
   "author": "Iuri Matias <iuri.matias@gmail.com>",
   "contributors": [],