diff --git a/package-lock.json b/package-lock.json
index e3ac7f5..ee6e550 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "shadergraph",
-  "version": "2.1.1",
+  "version": "2.1.2",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
diff --git a/package.json b/package.json
index 189c0ae..1940013 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "shadergraph",
-  "version": "2.1.1",
+  "version": "2.1.2",
   "description": "GLSL linker",
   "repository": {
     "type": "git",
diff --git a/src/factory/factory.js b/src/factory/factory.js
index b5f7ebe..ef4698b 100644
--- a/src/factory/factory.js
+++ b/src/factory/factory.js
@@ -219,7 +219,7 @@ export class Factory {
   }
 
   // Make subgraph and connect to tail
-  _isolate(sub, main) {
+  _isolate(sub, _main) {
     if (sub.nodes.length) {
       let block;
       const subgraph = this._subgraph(sub);
@@ -239,7 +239,7 @@ export class Factory {
   }
 
   // Convert to callback and connect to tail
-  _callback(sub, main) {
+  _callback(sub, _main) {
     if (sub.nodes.length) {
       let block;
       const subgraph = this._subgraph(sub);
diff --git a/src/glsl/compile.js b/src/glsl/compile.js
index abd6957..25a638a 100644
--- a/src/glsl/compile.js
+++ b/src/glsl/compile.js
@@ -10,7 +10,7 @@
 */
 
 export const compile = function (program) {
-  const { ast, code, signatures } = program;
+  const { code, signatures } = program;
 
   // Prepare list of placeholders
   const placeholders = replaced(signatures);
@@ -21,17 +21,6 @@ export const compile = function (program) {
   return [signatures, assembler];
 };
 
-// #####
-
-const tick = function () {
-  const now = +new Date();
-  return function (label) {
-    const delta = +new Date() - now;
-    console.log(label, delta + " ms");
-    return delta;
-  };
-};
-
 var replaced = function (signatures) {
   const out = {};
   const s = (sig) => (out[sig.name] = true);
@@ -70,7 +59,7 @@ var string_compiler = function (code, placeholders) {
 
   // Strip comments
   code = code.replace(/\/\/[^\n]*/g, "");
-  code = code.replace(/\/\*([^*]|\*[^\/])*\*\//g, "");
+  code = code.replace(/\/\*([^*]|\*[^/])*\*\//g, "");
 
   // Strip all preprocessor commands (lazy)
   //code = code.replace /^#[^\n]*/mg, ''
diff --git a/src/glsl/decl.js b/src/glsl/decl.js
index 9c18184..f4e6c63 100644
--- a/src/glsl/decl.js
+++ b/src/glsl/decl.js
@@ -9,7 +9,7 @@
 
 import { Vector2 } from "three/src/math/Vector2.js";
 import { Vector3 } from "three/src/math/Vector3.js";
-import { Vector4 } from "three/src/math/Vector3.js";
+import { Vector4 } from "three/src/math/Vector4.js";
 import { Matrix3 } from "three/src/math/Matrix3.js";
 import { Matrix4 } from "three/src/math/Matrix4.js";
 
@@ -37,7 +37,6 @@ decl.external = function (node) {
   let c = node.children;
 
   let storage = get(c[1]);
-  const struct = get(c[3]);
   const type = get(c[4]);
   const list = c[5];
 
@@ -74,7 +73,6 @@ decl.function = function (node) {
   //    console.log 'function', node
 
   const storage = get(c[1]);
-  const struct = get(c[3]);
   const type = get(c[4]);
   const func = c[5];
   const ident = get(func.children[0]);
@@ -229,8 +227,7 @@ class Definition {
   }
 
   copy(name, meta) {
-    let def;
-    return (def = new Definition(
+    return new Definition(
       name != null ? name : this.name,
       this.type,
       this.spec,
@@ -238,6 +235,6 @@ class Definition {
       this.value,
       this.inout,
       meta
-    ));
+    );
   }
 }
diff --git a/src/glsl/generate.js b/src/glsl/generate.js
index db37a1f..cd78154 100644
--- a/src/glsl/generate.js
+++ b/src/glsl/generate.js
@@ -89,7 +89,6 @@ export function same(a, b) {
 export function call(lookup, dangling, entry, signature, body) {
   const args = [];
   let ret = "";
-  const rets = 1;
 
   for (let arg of Array.from(signature)) {
     var id, shadow;
@@ -99,7 +98,6 @@ export function call(lookup, dangling, entry, signature, body) {
     let other = null;
     let meta = null;
     let omit = false;
-    const { inout } = arg;
 
     const isReturn = name === $.RETURN_ARG;
 
@@ -178,7 +176,6 @@ export function build(body, calls) {
   // Check if we're only calling one snippet with identical signature
   // and not building void main();
   if (calls && calls.length === 1 && entry !== "main") {
-    const a = body;
     const b = calls[0].module;
 
     if (same(body.signature, b.main.signature)) {
@@ -304,7 +301,8 @@ export const link = (link, out) => {
 
   // Build wrapper function for the calling side
   const outer = body();
-  const wrapper = call(_lookup, _dangling, entry, external.signature, outer);
+  call(_lookup, _dangling, entry, external.signature, outer);
+
   outer.calls = inner.calls;
   outer.entry = name;
 
@@ -317,7 +315,7 @@ export function defuse(code) {
   // Don't try this at home kids
   const re =
     /([A-Za-z0-9_]+\s+)?[A-Za-z0-9_]+\s+[A-Za-z0-9_]+\s*\([^)]*\)\s*;\s*/gm;
-  const strip = (code) => code.replace(re, (m) => "");
+  const strip = (code) => code.replace(re, (_m) => "");
 
   // Split into scopes by braces
   const blocks = code.split(/(?=[{}])/g);
@@ -366,7 +364,7 @@ export function dedupe(code) {
   const map = {};
   const re =
     /((attribute|uniform|varying)\s+)[A-Za-z0-9_]+\s+([A-Za-z0-9_]+)\s*(\[[^\]]*\]\s*)?;\s*/gm;
-  return code.replace(re, function (m, qual, type, name, struct) {
+  return code.replace(re, function (m, qual, type, name, _struct) {
     if (map[name]) {
       return "";
     }
diff --git a/src/graph/node.js b/src/graph/node.js
index 7013bb8..417546a 100644
--- a/src/graph/node.js
+++ b/src/graph/node.js
@@ -16,7 +16,7 @@ export class Node {
   static initClass() {
     this.index = 0;
   }
-  static id(name) {
+  static id(_name) {
     return ++Node.index;
   }
 
@@ -176,7 +176,7 @@ export class Node {
   }
 
   // Disconnect entire node
-  disconnect(node) {
+  disconnect(_node) {
     let outlet;
     for (outlet of Array.from(this.inputs)) {
       outlet.disconnect();
@@ -233,7 +233,6 @@ export class Node {
   // Remove outlet object from node.
   _remove(outlet) {
     const key = this._key(outlet);
-    const { inout } = outlet;
 
     // Sanity checks
     if (outlet.node !== this) {
diff --git a/src/visualize/markup.js b/src/visualize/markup.js
index d5fe4a5..91f4e32 100644
--- a/src/visualize/markup.js
+++ b/src/visualize/markup.js
@@ -60,7 +60,7 @@ var _activate = function (el) {
       popup.parentNode.classList.add("shadergraph-has-code");
       return popup.parentNode.addEventListener(
         "click",
-        (event) =>
+        (_event) =>
           (popup.style.display = {
             block: "none",
             none: "block",
diff --git a/src/visualize/serialize.js b/src/visualize/serialize.js
index a404e39..8f96c51 100644
--- a/src/visualize/serialize.js
+++ b/src/visualize/serialize.js
@@ -8,8 +8,6 @@
 // Dump graph for debug/visualization purposes
 import * as Block from "../block";
 
-const isCallback = (outlet) => outlet.type[0] === "(";
-
 export var serialize = function (graph) {
   const nodes = [];
   const links = [];