diff --git a/proxy/.eslintignore b/proxy/.eslintignore
new file mode 100644
index 0000000..f580632
--- /dev/null
+++ b/proxy/.eslintignore
@@ -0,0 +1,7 @@
+build/
+test/
+webext/snowflake.js
+
+# FIXME: Whittle these away
+spec/
+shims.js
diff --git a/proxy/.eslintrc.json b/proxy/.eslintrc.json
index d6f8309..f94ba96 100644
--- a/proxy/.eslintrc.json
+++ b/proxy/.eslintrc.json
@@ -1,8 +1,7 @@
 {
     "env": {
         "browser": true,
-        "es6": true,
-        "node": true
+        "es6": true
     },
     "extends": "eslint:recommended"
 }
diff --git a/proxy/broker.js b/proxy/broker.js
index 4e287b4..9806e76 100644
--- a/proxy/broker.js
+++ b/proxy/broker.js
@@ -1,3 +1,5 @@
+/* global log, dbg, snowflake */
+
 /*
 Communication with the snowflake broker.
 
@@ -104,7 +106,7 @@ class Broker {
     return xhr.send(payload);
   }
 
-};
+}
 
 Broker.STATUS = {
   OK: 200,
diff --git a/proxy/config.js b/proxy/config.js
index d5d8ef7..af8bc02 100644
--- a/proxy/config.js
+++ b/proxy/config.js
@@ -1,5 +1,5 @@
 
-class Config {};
+class Config {}
 
 Config.prototype.brokerUrl = 'snowflake-broker.bamsoftware.com';
 
diff --git a/proxy/init-badge.js b/proxy/init-badge.js
index 180a963..1a887a1 100644
--- a/proxy/init-badge.js
+++ b/proxy/init-badge.js
@@ -1,10 +1,12 @@
+/* global TESTING, Util, Query, Params, Config, DebugUI, BadgeUI, UI, Broker, Snowflake */
+
 /*
 Entry point.
 */
 
 var snowflake, query, debug, silenceNotifications, log, dbg, init;
 
-;(function() {
+(function() {
 
   if (((typeof TESTING === "undefined" || TESTING === null) || !TESTING) && !Util.featureDetect()) {
     console.log('webrtc feature not detected. shutting down');
diff --git a/proxy/init-node.js b/proxy/init-node.js
index 9efd486..789e6e3 100644
--- a/proxy/init-node.js
+++ b/proxy/init-node.js
@@ -1,3 +1,5 @@
+/* global Config, UI, Broker, Snowflake */
+
 /*
 Entry point.
 */
diff --git a/proxy/init-webext.js b/proxy/init-webext.js
index ee755c6..2f4f156 100644
--- a/proxy/init-webext.js
+++ b/proxy/init-webext.js
@@ -1,10 +1,13 @@
+/* global Util, chrome, Config, WebExtUI, Broker, Snowflake */
+/* eslint no-unused-vars: 0 */
+
 /*
 Entry point.
 */
 
 var debug, snowflake, config, broker, ui, log, dbg, init, update, silenceNotifications;
 
-;(function () {
+(function () {
 
   silenceNotifications = false;
   debug = false;
diff --git a/proxy/make.js b/proxy/make.js
index f5f1c0a..b614864 100755
--- a/proxy/make.js
+++ b/proxy/make.js
@@ -1,7 +1,8 @@
 #!/usr/bin/env node
 
-var fs = require('fs');
-var { exec, spawn, execSync } = require('child_process');
+/* global require, process */
+
+var { exec, spawn } = require('child_process');
 
 // All files required.
 var FILES = [
@@ -15,12 +16,6 @@ var FILES = [
   'shims.js'
 ];
 
-var INITS = [
-  'init-badge.js',
-  'init-node.js',
-  'init-webext.js'
-];
-
 var FILES_SPEC = [
   'spec/broker.spec.js',
   'spec/init.spec.js',
@@ -42,7 +37,7 @@ var copyStaticFiles = function() {
 var concatJS = function(outDir, init) {
   var files;
   files = FILES.concat(`init-${init}.js`);
-  return exec(`cat ${files.join(' ')} > ${outDir}/${OUTFILE}`, function(err, stdout, stderr) {
+  return exec(`cat ${files.join(' ')} > ${outDir}/${OUTFILE}`, function(err) {
     if (err) {
       throw err;
     }
diff --git a/proxy/proxypair.js b/proxy/proxypair.js
index 674ac18..6ffa9e5 100644
--- a/proxy/proxypair.js
+++ b/proxy/proxypair.js
@@ -1,3 +1,5 @@
+/* global snowflake, log, dbg, Util, PeerConnection, Snowflake, Parse, WS */
+
 /*
 Represents a single:
 
@@ -66,15 +68,13 @@ class ProxyPair {
   }
 
   receiveWebRTCOffer(offer) {
-    var e, err;
     if ('offer' !== offer.type) {
       log('Invalid SDP received -- was not an offer.');
       return false;
     }
     try {
-      err = this.pc.setRemoteDescription(offer);
+      this.pc.setRemoteDescription(offer);
     } catch (error) {
-      e = error;
       log('Invalid SDP message.');
       return false;
     }
@@ -233,7 +233,7 @@ class ProxyPair {
     return void 0 === ws || WebSocket.CLOSED === ws.readyState;
   }
 
-};
+}
 
 ProxyPair.prototype.MAX_BUFFER = 10 * 1024 * 1024;
 
diff --git a/proxy/shims.js b/proxy/shims.js
index 4ddf421..8c88eae 100644
--- a/proxy/shims.js
+++ b/proxy/shims.js
@@ -1,3 +1,5 @@
+/* global module, require */
+
 /*
 WebRTC shims for multiple browsers.
 */
diff --git a/proxy/snowflake.js b/proxy/snowflake.js
index 2c08c4d..bbf3d8b 100644
--- a/proxy/snowflake.js
+++ b/proxy/snowflake.js
@@ -1,3 +1,5 @@
+/* global log, dbg, DummyRateLimit, BucketRateLimit, SessionDescription, ProxyPair */
+
 /*
 A JavaScript WebRTC snowflake proxy
 
@@ -79,7 +81,7 @@ class Snowflake {
       } else {
         return pair.active = false;
       }
-    }, function(err) {
+    }, function() {
       return pair.active = false;
     });
     return this.retries++;
@@ -90,7 +92,7 @@ class Snowflake {
     if (this.proxyPairs.length < this.config.connectionsPerClient) {
       return this.makeProxyPair(this.relayAddr);
     }
-    return this.proxyPairs.find(function(pp, i, arr) {
+    return this.proxyPairs.find(function(pp) {
       return !pp.active;
     });
   }
@@ -130,7 +132,7 @@ class Snowflake {
     var pair;
     pair = new ProxyPair(relay, this.rateLimit, this.config.pcConfig);
     this.proxyPairs.push(pair);
-    pair.onCleanup = (event) => {
+    pair.onCleanup = () => {
       var ind;
       // Delete from the list of active proxy pairs.
       ind = this.proxyPairs.indexOf(pair);
@@ -154,7 +156,7 @@ class Snowflake {
     return results;
   }
 
-};
+}
 
 Snowflake.prototype.relayAddr = null;
 
diff --git a/proxy/spec/broker.spec.js b/proxy/spec/broker.spec.js
index a7c2e1d..4eb3029 100644
--- a/proxy/spec/broker.spec.js
+++ b/proxy/spec/broker.spec.js
@@ -1,3 +1,5 @@
+/* global expect, it, describe, spyOn, Broker */
+
 /*
 jasmine tests for Snowflake broker
 */
diff --git a/proxy/spec/init.spec.js b/proxy/spec/init.spec.js
index baa7388..748bc86 100644
--- a/proxy/spec/init.spec.js
+++ b/proxy/spec/init.spec.js
@@ -1,3 +1,5 @@
+/* global expect, it, describe, Snowflake, UI */
+
 // Fake snowflake to interact with
 
 var snowflake = {
diff --git a/proxy/spec/proxypair.spec.js b/proxy/spec/proxypair.spec.js
index 924aca0..3716f2d 100644
--- a/proxy/spec/proxypair.spec.js
+++ b/proxy/spec/proxypair.spec.js
@@ -1,3 +1,5 @@
+/* global expect, it, describe, spyOn */
+
 /*
 jasmine tests for Snowflake proxypair
 */
diff --git a/proxy/spec/snowflake.spec.js b/proxy/spec/snowflake.spec.js
index eccc24d..970947b 100644
--- a/proxy/spec/snowflake.spec.js
+++ b/proxy/spec/snowflake.spec.js
@@ -1,3 +1,5 @@
+/* global expect, it, describe, spyOn, Snowflake, Config, UI */
+
 /*
 jasmine tests for Snowflake
 */
@@ -7,34 +9,34 @@ class PeerConnection {
   setRemoteDescription() {
     return true;
   }
-  send(data) {}
-};
+  send() {}
+}
 
-class SessionDescription {};
+class SessionDescription {}
 SessionDescription.prototype.type = 'offer';
 
 class WebSocket {
   constructor() {
     this.bufferedAmount = 0;
   }
-  send(data) {}
-};
+  send() {}
+}
 WebSocket.prototype.OPEN = 1;
 WebSocket.prototype.CLOSED = 0;
 
 var log = function() {};
 
-var config = new Config;
+var config = new Config();
 
-var ui = new UI;
+var ui = new UI();
 
 class FakeBroker {
   getClientOffer() {
-    return new Promise(function(F, R) {
+    return new Promise(function() {
       return {};
     });
   }
-};
+}
 
 describe('Snowflake', function() {
 
diff --git a/proxy/spec/ui.spec.js b/proxy/spec/ui.spec.js
index 8ae141f..3386a2d 100644
--- a/proxy/spec/ui.spec.js
+++ b/proxy/spec/ui.spec.js
@@ -1,8 +1,12 @@
+/* global expect, it, describe, spyOn, DebugUI, BadgeUI */
+/* eslint no-redeclare: 0 */
+
 /*
 jasmine tests for Snowflake UI
 */
+
 var document = {
-  getElementById: function(id) {
+  getElementById: function() {
     return {};
   },
   createTextNode: function(txt) {
diff --git a/proxy/spec/util.spec.js b/proxy/spec/util.spec.js
index 8f1ff7a..17968b1 100644
--- a/proxy/spec/util.spec.js
+++ b/proxy/spec/util.spec.js
@@ -1,3 +1,5 @@
+/* global expect, it, describe, Parse, Query, Params */
+
 /*
 jasmine tests for Snowflake utils
 */
diff --git a/proxy/spec/websocket.spec.js b/proxy/spec/websocket.spec.js
index 370995a..6c2ef2e 100644
--- a/proxy/spec/websocket.spec.js
+++ b/proxy/spec/websocket.spec.js
@@ -1,3 +1,5 @@
+/* global expect, it, describe, WS */
+
 /*
 jasmine tests for Snowflake websocket
 */
diff --git a/proxy/ui.js b/proxy/ui.js
index da14800..54e0897 100644
--- a/proxy/ui.js
+++ b/proxy/ui.js
@@ -1,18 +1,20 @@
+/* global chrome, log, update */
+
 /*
 All of Snowflake's DOM manipulation and inputs.
 */
 
 class UI {
 
-  setStatus(msg) {}
+  setStatus() {}
 
   setActive(connected) {
     return this.active = connected;
   }
 
-  log(msg) {}
+  log() {}
 
-};
+}
 
 UI.prototype.active = false;
 
@@ -31,7 +33,7 @@ class BadgeUI extends UI {
     return this.$badge.className = connected ? 'active' : '';
   }
 
-};
+}
 
 BadgeUI.prototype.$badge = null;
 
@@ -67,7 +69,7 @@ class DebugUI extends UI {
     return this.$msglog.scrollTop = this.$msglog.scrollHeight;
   }
 
-};
+}
 
 // DOM elements references.
 DebugUI.prototype.$msglog = null;
@@ -96,14 +98,13 @@ class WebExtUI extends UI {
   }
 
   initToggle() {
-    var getting;
-    return getting = chrome.storage.local.get("snowflake-enabled", (result) => {
+    chrome.storage.local.get("snowflake-enabled", (result) => {
       if (result['snowflake-enabled'] !== void 0) {
         this.enabled = result['snowflake-enabled'];
       } else {
         log("Toggle state not yet saved");
       }
-      return this.setEnabled(this.enabled);
+      this.setEnabled(this.enabled);
     });
   }
 
@@ -126,19 +127,18 @@ class WebExtUI extends UI {
   }
 
   onMessage(m) {
-    var storing;
     this.enabled = m.enabled;
     this.setEnabled(this.enabled);
     this.postActive();
-    return storing = chrome.storage.local.set({
+    chrome.storage.local.set({
       "snowflake-enabled": this.enabled
     }, function() {
-      return log("Stored toggle state");
+      log("Stored toggle state");
     });
   }
 
-  onDisconnect(port) {
-    return this.port = null;
+  onDisconnect() {
+    this.port = null;
   }
 
   setActive(connected) {
@@ -171,7 +171,7 @@ class WebExtUI extends UI {
     });
   }
 
-};
+}
 
 WebExtUI.prototype.port = null;
 
diff --git a/proxy/util.js b/proxy/util.js
index 6d3651f..073251e 100644
--- a/proxy/util.js
+++ b/proxy/util.js
@@ -1,3 +1,6 @@
+/* global log */
+/* exported Query, Params, DummyRateLimit */
+
 /*
 A JavaScript WebRTC snowflake proxy
 
@@ -34,7 +37,7 @@ class Util {
     return typeof PeerConnection === 'function';
   }
 
-};
+}
 
 // It would not be effective for Tor Browser users to run the proxy.
 // Do we seem to be running in Tor Browser? Check the user-agent string and for
@@ -99,7 +102,7 @@ class Query {
     return parts.join('&');
   }
 
-};
+}
 
 
 class Parse {
@@ -203,7 +206,7 @@ class Parse {
     }
   }
 
-};
+}
 
 
 class Params {
@@ -257,7 +260,7 @@ class Params {
     return val;
   }
 
-};
+}
 
 
 class BucketRateLimit {
@@ -295,7 +298,7 @@ class BucketRateLimit {
     return this.amount > this.capacity;
   }
 
-};
+}
 
 BucketRateLimit.prototype.amount = 0.0;
 
@@ -310,7 +313,7 @@ class DummyRateLimit {
     this.time = time;
   }
 
-  update(n) {
+  update() {
     return true;
   }
 
@@ -322,4 +325,4 @@ class DummyRateLimit {
     return false;
   }
 
-};
+}
diff --git a/proxy/webext/popup.js b/proxy/webext/popup.js
index 435adb1..d8d6464 100644
--- a/proxy/webext/popup.js
+++ b/proxy/webext/popup.js
@@ -1,3 +1,5 @@
+/* global chrome */
+
 const port = chrome.runtime.connect({
   name: "popup"
 });
diff --git a/proxy/websocket.js b/proxy/websocket.js
index 2a124aa..83911da 100644
--- a/proxy/websocket.js
+++ b/proxy/websocket.js
@@ -1,3 +1,5 @@
+/* global Query */
+
 /*
 Only websocket-specific stuff.
 */
@@ -27,7 +29,7 @@ class WS {
       if (!path.match(/^\//)) {
         path = '/' + path;
       }
-      path = path.replace(/[^\/]+/, function(m) {
+      path = path.replace(/[^/]+/, function(m) {
         return encodeURIComponent(m);
       });
       parts.push(path);
@@ -54,7 +56,7 @@ class WS {
     return ws;
   }
 
-};
+}
 
 WS.WSS_ENABLED = true;