Add Eslint and prettier (#202)

Added Eslint and prettier formatting, cleaned up linter errors throughout application, and fixed any broken tests.

index.js

@@ -8,7 +8,9 @@ try {
   // make sure these exist before we try to load ganache with native modules
   const optionalDependencies = require("./package.json").optionalDependencies;
   const wrongWeb3 = require("web3/package.json").version !== optionalDependencies["web3"];
-  const wrongEthereumJs = require("ethereumjs-wallet/package.json").version !== optionalDependencies["ethereumjs-wallet"];
+  const wrongEthereumJs = require(
+    "ethereumjs-wallet/package.json"
+  ).version !== optionalDependencies["ethereumjs-wallet"];
   if (wrongWeb3 || wrongEthereumJs) {
     useBundled();
   } else {
@@ -28,8 +30,8 @@ function useBundled() {
     module.exports = require("./build/ganache.core.node.js");
     module.exports._webpacked = true;
     debug("Optional dependencies not installed; exporting ganache-core from `./build` directory.");
-  } catch(webpackError) {
+  } catch (webpackError) {
     debug("ganache-core could not be exported; optional dependencies nor webpack build available for export.");
     throw webpackError;
   }
-}
+}

lib/block_tracker.js

@@ -1,66 +1,71 @@
 // this replaces `eth-block-tracker` in the provider-engine, as that block tracker is meant to work with
 // an external provider instance
 
-const EventEmitter = require('events')
-const BlockSerializer = require('./database/blockserializer')
-var blockHelper = require('./utils/block_helper');
-const to = require('./utils/to')
+const EventEmitter = require("events");
+var blockHelper = require("./utils/block_helper");
 
 function GanacheBlockTracker(opts) {
-  opts = opts || {}
-  EventEmitter.apply(this)
-  if (!opts.blockchain) throw new Error('RpcBlockTracker - no blockchain specified.')
-  if (!opts.blockchain.on) throw new Error('RpcBlockTracker - blockchain is not an EventEmitter.')
-  this._blockchain = opts.blockchain
-  this.start = this.start.bind(this)
-  this.stop = this.stop.bind(this)
-  this.getTrackingBlock = this.getTrackingBlock.bind(this)
-  this.awaitCurrentBlock = this.awaitCurrentBlock.bind(this)
-  this._setCurrentBlock = this._setCurrentBlock.bind(this)
+  opts = opts || {};
+  EventEmitter.apply(this);
+  if (!opts.blockchain) {
+    throw new Error("RpcBlockTracker - no blockchain specified.");
+  }
+  if (!opts.blockchain.on) {
+    throw new Error("RpcBlockTracker - blockchain is not an EventEmitter.");
+  }
+  this._blockchain = opts.blockchain;
+  this.start = this.start.bind(this);
+  this.stop = this.stop.bind(this);
+  this.getTrackingBlock = this.getTrackingBlock.bind(this);
+  this.awaitCurrentBlock = this.awaitCurrentBlock.bind(this);
+  this._setCurrentBlock = this._setCurrentBlock.bind(this);
 }
 
-GanacheBlockTracker.prototype = Object.create(EventEmitter.prototype)
-GanacheBlockTracker.prototype.constructor = GanacheBlockTracker
+GanacheBlockTracker.prototype = Object.create(EventEmitter.prototype);
+GanacheBlockTracker.prototype.constructor = GanacheBlockTracker;
 
 GanacheBlockTracker.prototype.getTrackingBlock = function() {
-  return this._currentBlock
-}
+  return this._currentBlock;
+};
 
 GanacheBlockTracker.prototype.getCurrentBlock = function() {
-  return this._currentBlock
-}
+  return this._currentBlock;
+};
 
 GanacheBlockTracker.prototype.awaitCurrentBlock = function() {
-  const self = this
+  const self = this;
   // return if available
-  if (this._currentBlock) return this._currentBlock
+  if (this._currentBlock) {
+    return this._currentBlock;
+  }
   // wait for "sync" event
-  return new Promise(resolve => this.once('block', resolve))
-    .then(() => self._currentBlock)
-}
+  return new Promise((resolve) => this.once("block", resolve)).then(() => self._currentBlock);
+};
 
 GanacheBlockTracker.prototype.start = function(opts = {}) {
-  this._blockchain.on('block', this._setCurrentBlock)
-  return Promise.resolve()
-}
+  this._blockchain.on("block", this._setCurrentBlock);
+  return Promise.resolve();
+};
 
 GanacheBlockTracker.prototype.stop = function() {
-  this._isRunning = false
-  this._blockchain.removeListener('block', this._setCurrentBlock)
-}
+  this._isRunning = false;
+  this._blockchain.removeListener("block", this._setCurrentBlock);
+};
 
-  //
-  // private
-  //
+//
+// private
+//
 
 GanacheBlockTracker.prototype._setCurrentBlock = function(newBlock) {
-  let block = blockHelper.toJSON(newBlock, true)
-  if (this._currentBlock && (this._currentBlock.hash === block.hash)) return
-  const oldBlock = this._currentBlock
-  this._currentBlock = block
-  this.emit('latest', block)
-  this.emit('sync', { block, oldBlock })
-  this.emit('block', block)
-}
+  let block = blockHelper.toJSON(newBlock, true);
+  if (this._currentBlock && this._currentBlock.hash === block.hash) {
+    return;
+  }
+  const oldBlock = this._currentBlock;
+  this._currentBlock = block;
+  this.emit("latest", block);
+  this.emit("sync", { block, oldBlock });
+  this.emit("block", block);
+};
 
-module.exports = GanacheBlockTracker
+module.exports = GanacheBlockTracker;