diff --git a/.gitignore b/.gitignore
index 0ef5d3f..49624ef 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ pom.xml.asc
 .lein-repl-history
 .lein-plugins/
 .lein-failures
+out/
diff --git a/DEVELOPER.md b/DEVELOPER.md
new file mode 100644
index 0000000..f98bd5d
--- /dev/null
+++ b/DEVELOPER.md
@@ -0,0 +1,12 @@
+# Running Clojure tests
+
+```
+lein test com.rpl.specter.core-test
+```
+
+# Running ClojureScript tests
+
+```
+$ rlwrap java -cp `lein classpath`:cljs.jar clojure.main repl.clj
+cljs.user=> (require 'com.rpl.specter.cljs-test-runner)
+```
diff --git a/project.clj b/project.clj
index 13c1e4d..1b5ef14 100644
--- a/project.clj
+++ b/project.clj
@@ -1,11 +1,24 @@
 (def VERSION (.trim (slurp "VERSION")))
 
 (defproject com.rpl/specter VERSION
-  :dependencies [[org.clojure/clojure "1.6.0"]
+  :dependencies [[org.clojure/clojure "1.7.0"]
+                 ;;TODO: how to make this a dep of only the cljs version?
+                 [org.clojure/clojurescript "0.0-3308"]
                  ]
   :jvm-opts ["-XX:-OmitStackTraceInFastThrow"] ; this prevents JVM from doing optimizations which can remove stack traces from NPE and other exceptions
-  :source-paths ["src/clj"]
-  :test-paths ["test/clj"]
+  :plugins [[lein-cljsbuild "1.0.6"]]
+  :source-paths ["src"]
+  :test-paths ["test"]
   :profiles {:dev {:dependencies
-                   [[org.clojure/test.check "0.5.9"]]}
-             })
+                   [[org.clojure/test.check "0.7.0"]]}
+             }
+  :cljsbuild {
+    :builds {:dev
+             {:source-paths ["src"]
+              :compiler {
+                         :output-to "target/main.js"
+                         :optimizations :whitespace
+                         :pretty-print true
+                         }}
+             }
+    })
diff --git a/repl.clj b/repl.clj
new file mode 100644
index 0000000..278074a
--- /dev/null
+++ b/repl.clj
@@ -0,0 +1,11 @@
+(require 'cljs.repl)
+(require 'cljs.build.api)
+(require 'cljs.repl.node)
+
+(cljs.build.api/build "src"
+  {:output-to "out/main.js"
+   :verbose true})
+
+(cljs.repl/repl (cljs.repl.node/repl-env)
+  :watch "src"
+  :output-dir "out")
diff --git a/src/clj/com/rpl/specter.clj b/src/com/rpl/specter.cljc
similarity index 70%
rename from src/clj/com/rpl/specter.clj
rename to src/com/rpl/specter.cljc
index 8056e7f..2bac341 100644
--- a/src/clj/com/rpl/specter.clj
+++ b/src/com/rpl/specter.cljc
@@ -1,5 +1,6 @@
 (ns com.rpl.specter
-  (:use [com.rpl.specter impl protocols])
+  (:use [com.rpl.specter.protocols :only [StructurePath comp-paths*]])
+  (:require [com.rpl.specter.impl :as i])
   )
 
 ;;TODO: can make usage of vals much more efficient by determining during composition how many vals
@@ -12,12 +13,12 @@
 ;; Selector functions
 
 (def ^{:doc "Version of select that takes in a selector pre-compiled with comp-paths"}
-  compiled-select compiled-select*)
+  compiled-select i/compiled-select*)
 
 (defn select
   "Navigates to and returns a sequence of all the elements specified by the selector."
   [selector structure]
-  (compiled-select (comp-unoptimal selector)
+  (compiled-select (i/comp-unoptimal selector)
                    structure))
 
 (defn compiled-select-one
@@ -25,27 +26,27 @@
   [selector structure]
   (let [res (compiled-select selector structure)]
     (when (> (count res) 1)
-      (throw-illegal "More than one element found for params: " selector structure))
+      (i/throw-illegal "More than one element found for params: " selector structure))
     (first res)
     ))
 
 (defn select-one
   "Like select, but returns either one element or nil. Throws exception if multiple elements found"
   [selector structure]
-  (compiled-select-one (comp-unoptimal selector) structure))
+  (compiled-select-one (i/comp-unoptimal selector) structure))
 
 (defn compiled-select-one!
   "Version of select-one! that takes in a selector pre-compiled with comp-paths"
   [selector structure]
   (let [res (compiled-select selector structure)]
-    (when (not= 1 (count res)) (throw-illegal "Expected exactly one element for params: " selector structure))
+    (when (not= 1 (count res)) (i/throw-illegal "Expected exactly one element for params: " selector structure))
     (first res)
     ))
 
 (defn select-one!
   "Returns exactly one element, throws exception if zero or multiple elements found"
   [selector structure]
-  (compiled-select-one! (comp-unoptimal selector) structure))
+  (compiled-select-one! (i/comp-unoptimal selector) structure))
 
 (defn compiled-select-first
   "Version of select-first that takes in a selector pre-compiled with comp-paths"
@@ -55,19 +56,19 @@
 (defn select-first
   "Returns first element found. Not any more efficient than select, just a convenience"
   [selector structure]
-  (compiled-select-first (comp-unoptimal selector) structure))
+  (compiled-select-first (i/comp-unoptimal selector) structure))
 
 ;; Transformfunctions
 
 
 (def ^{:doc "Version of transform that takes in a selector pre-compiled with comp-paths"}
-  compiled-transform compiled-transform*)
+  compiled-transform i/compiled-transform*)
 
 (defn transform
   "Navigates to each value specified by the selector and replaces it by the result of running
   the transform-fn on it"
   [selector transform-fn structure]
-  (compiled-transform (comp-unoptimal selector) transform-fn structure))
+  (compiled-transform (i/comp-unoptimal selector) transform-fn structure))
 
 (defn compiled-setval
   "Version of setval that takes in a selector pre-compiled with comp-paths"
@@ -77,25 +78,25 @@
 (defn setval
   "Navigates to each value specified by the selector and replaces it by val"
   [selector val structure]
-  (compiled-setval (comp-unoptimal selector) val structure))
+  (compiled-setval (i/comp-unoptimal selector) val structure))
 
 (defn compiled-replace-in
   "Version of replace-in that takes in a selector pre-compiled with comp-paths"
   [selector transform-fn structure & {:keys [merge-fn] :or {merge-fn concat}}]
-  (let [state (mutable-cell nil)]
+  (let [state (i/mutable-cell nil)]
     [(compiled-transform selector
              (fn [e]
                (let [res (transform-fn e)]
                  (if res
                    (let [[ret user-ret] res]
                      (->> user-ret
-                          (merge-fn (get-cell state))
-                          (set-cell! state))
+                          (merge-fn (i/get-cell state))
+                          (i/set-cell! state))
                      ret)
                    e
                    )))
              structure)
-     (get-cell state)]
+     (i/get-cell state)]
     ))
 
 (defn replace-in
@@ -105,38 +106,35 @@
    in the final return. replace-in is useful for situations where you need to know the specific values
    of what was transformd in the data structure."
   [selector transform-fn structure & {:keys [merge-fn] :or {merge-fn concat}}]
-  (compiled-replace-in (comp-unoptimal selector) transform-fn structure :merge-fn merge-fn))
+  (compiled-replace-in (i/comp-unoptimal selector) transform-fn structure :merge-fn merge-fn))
 
 ;; Built-in pathing and context operations
 
-(def ALL (->AllStructurePath))
+(def ALL (i/->AllStructurePath))
 
-(def VAL (->ValCollect))
+(def VAL (i/->ValCollect))
 
-(def LAST (->PosStructurePath last set-last))
+(def LAST (i/->PosStructurePath last i/set-last))
 
-(def FIRST (->PosStructurePath first set-first))
+(def FIRST (i/->PosStructurePath first i/set-first))
 
-(defn srange-dynamic [start-fn end-fn] (->SRangePath start-fn end-fn))
+(defn srange-dynamic [start-fn end-fn] (i/->SRangePath start-fn end-fn))
 
 (defn srange [start end] (srange-dynamic (fn [_] start) (fn [_] end)))
 
-(def START (srange 0 0))
+(def BEGINNING (srange 0 0))
 
 (def END (srange-dynamic count count))
 
-(defn walker [afn] (->WalkerStructurePath afn))
+(defn walker [afn] (i/->WalkerStructurePath afn))
 
-(defn codewalker [afn] (->CodeWalkerStructurePath afn))
+(defn codewalker [afn] (i/->CodeWalkerStructurePath afn))
 
-(defn filterer [& path] (->FilterStructurePath (comp-paths* path)))
+(defn filterer [& path] (i/->FilterStructurePath (comp-paths* path)))
 
-(defn keypath [akey] (->KeyPath akey))
+(defn keypath [akey] (i/->KeyPath akey))
 
-(defn view [afn] (->ViewPath afn))
-
-(defmacro viewfn [& args]
-  `(view (fn ~@args)))
+(defn view [afn] (i/->ViewPath afn))
 
 (defn selected?
   "Filters the current value based on whether a selector finds anything.
@@ -150,7 +148,7 @@
            empty?
            not))))
 
-(extend-type clojure.lang.Keyword
+(extend-type #?(:clj clojure.lang.Keyword :cljs cljs.core/Keyword)
   StructurePath
   (select* [kw structure next-fn]
     (next-fn (get structure kw)))
@@ -158,25 +156,25 @@
     (assoc structure kw (next-fn (get structure kw)))
     ))
 
-(extend-type clojure.lang.AFn
+(extend-type #?(:clj clojure.lang.AFn :cljs js/Function)
   StructurePath
   (select* [afn structure next-fn]
-    (filter-select afn structure next-fn))
+    (i/filter-select afn structure next-fn))
   (transform* [afn structure next-fn]
-    (filter-transform afn structure next-fn)))
+    (i/filter-transform afn structure next-fn)))
 
-(extend-protocol StructurePath
-  clojure.lang.PersistentHashSet
+(extend-type #?(:clj clojure.lang.PersistentHashSet :cljs cljs.core/PersistentHashSet)
+  StructurePath
   (select* [aset structure next-fn]
-    (filter-select aset structure next-fn))
+    (i/filter-select aset structure next-fn))
   (transform* [aset structure next-fn]
-    (filter-transform aset structure next-fn)))
+    (i/filter-transform aset structure next-fn)))
 
 (defn collect [& selector]
-  (->SelectCollector select (comp-paths* selector)))
+  (i/->SelectCollector select (comp-paths* selector)))
 
 (defn collect-one [& selector]
-  (->SelectCollector select-one (comp-paths* selector)))
+  (i/->SelectCollector select-one (comp-paths* selector)))
 
 (defn putval
   "Adds an external value to the collected vals. Useful when additional arguments
@@ -186,7 +184,7 @@
   e.g., incrementing val at path [:a :b] by 3:
   (transform [:a :b (putval 3)] + some-map)"
   [val]
-  (->PutValCollector val))
+  (i/->PutValCollector val))
 
 (defn cond-path
   "Takes in alternating cond-path selector cond-path selector...
@@ -199,7 +197,7 @@
        (partition 2)
        (map (fn [[c p]] [(comp-paths* c) (comp-paths* p)]))
        doall
-       ->ConditionalPath
+       i/->ConditionalPath
        ))
 
 (defn if-path
@@ -212,4 +210,4 @@
   "A path that branches on multiple paths. For updates,
    applies updates to the paths in order."
   [& paths]
-  (->MultiPath (->> paths (map comp-paths*) doall)))
+  (i/->MultiPath (->> paths (map comp-paths*) doall)))
diff --git a/src/clj/com/rpl/specter/impl.clj b/src/com/rpl/specter/impl.cljc
similarity index 68%
rename from src/clj/com/rpl/specter/impl.clj
rename to src/com/rpl/specter/impl.cljc
index 48e8994..364e1ee 100644
--- a/src/clj/com/rpl/specter/impl.clj
+++ b/src/com/rpl/specter/impl.cljc
@@ -1,14 +1,38 @@
 (ns com.rpl.specter.impl
-  (:use [com.rpl.specter protocols])
-  (:require [clojure.walk :as walk]
-            [clojure.core.reducers :as r])
+  (:use [com.rpl.specter.protocols :only
+    [comp-paths*
+     select* transform* collect-val select-full* transform-full*]])
+  (:require [com.rpl.specter.protocols :as p]
+            [clojure.walk :as walk]
+            [clojure.core.reducers :as r]
+            [clojure.string :as s])
   )
 
+#?(
+:clj
+(defmacro field [obj quoted-field]
+  `(. ~obj ~(second quoted-field)))
+
+:cljs
+(defn field [obj field]
+  (aget obj (s/replace (str field) "-" "_")))
+)
+
+#?(
+:clj
+(do
 (defmacro throw* [etype & args]
   `(throw (new ~etype (pr-str ~@args))))
 
 (defmacro throw-illegal [& args]
-  `(throw* IllegalArgumentException ~@args))
+  `(throw* IllegalArgumentException ~@args)))
+
+
+:cljs
+(defn throw-illegal [& args]
+  (throw (js/Error. (apply str args)))
+  )
+)
 
 (defn benchmark [iters afn]
   (time
@@ -47,6 +71,11 @@
 (defprotocol CoerceTransformFunctions
   (coerce-path [this]))
 
+(defn- seq-contains? [aseq val]
+  (->> aseq
+       (filter (partial = val))
+       empty?
+       not))
 
 (defn no-prot-error-str [obj]
   (str "Protocol implementation cannot be found for object.
@@ -55,15 +84,69 @@
         optimized performance. Instead, you should extend the protocols via an
         explicit extend-protocol call. \n" obj))
 
+#?(
+:clj
+
 (defn find-protocol-impl! [prot obj]
   (let [ret (find-protocol-impl prot obj)]
     (if (= ret obj)
       (throw-illegal (no-prot-error-str obj))
       ret
       )))
+)
+
+#?(
+:clj
+(defmacro obj-extends? [quoted-prot-sym obj]
+  `(->> ~obj (find-protocol-impl ~(second quoted-prot-sym)) nil? not))
+
+:cljs
+(defn obj-extends? [prot-sym obj]
+  (if (nil? obj)
+    (= prot-sym `p/StructurePath)
+    ;; this requires that prot-sym be fully qualified
+    (let [props (->> obj type .-prototype (.getOwnPropertyNames js/Object) seq)
+          ns (namespace prot-sym)
+          n (name prot-sym)
+          lookup (str (s/replace ns "." "$") "$" n "$")]
+      (seq-contains? props lookup)
+      )))
+)
+
+#?(:clj
+(do
+(defn structure-path-impl [this]
+  (if (fn? this)
+    ;;TODO: this isn't kosher, it uses knowledge of internals of protocols
+    (-> p/StructurePath :impls (get clojure.lang.AFn))
+    (find-protocol-impl! p/StructurePath this)))
+
+(defn collector-impl [this]
+  (find-protocol-impl! p/Collector this))
+
+(defn structure-vals-path-impl [this]
+  (find-protocol-impl! p/StructureValsPath this))
+))
+
+#?(:cljs
+(do
+(defn structure-path-impl [_]
+  {:select* (fn [this structure next-fn] (select* this structure next-fn))
+   :transform* (fn [this structure next-fn] (transform* this structure next-fn))
+   })
+
+(defn collector-impl [_]
+  {:collect-val (fn [this structure] (collect-val this structure))
+   })
+
+(defn structure-vals-path-impl [_]
+  {:select-full* (fn [this structure next-fn] (select-full* this structure next-fn))
+   :transform-full* (fn [this structure next-fn] (transform-full* this structure next-fn))
+   })
+))
 
 (defn coerce-structure-vals-path [this]
-  (let [pimpl (find-protocol-impl! StructureValsPath this)
+  (let [pimpl (structure-vals-path-impl this)
         selector (:select-full* pimpl)
         transformer (:transform-full* pimpl)]
     (->TransformFunctions
@@ -76,7 +159,7 @@
 
 (defn coerce-collector [this]
   (let [cfn (->> this
-                 (find-protocol-impl! Collector)
+                 collector-impl
                  :collect-val
                  )
         afn (fn [vals structure next-fn]
@@ -85,12 +168,6 @@
     (->TransformFunctions StructureValsPathExecutor afn afn)))
 
 
-(defn structure-path-impl [this]
-  (if (fn? this)
-    ;;TODO: this isn't kosher, it uses knowledge of internals of protocols
-    (-> StructurePath :impls (get clojure.lang.AFn))
-    (find-protocol-impl! StructurePath this)))
-
 (defn coerce-structure-path [this]
   (let [pimpl (structure-path-impl this)
         selector (:select* pimpl)
@@ -115,11 +192,8 @@
         (transformer this structure (fn [structure] (next-fn vals structure))))
     )))
 
-(defn obj-extends? [prot obj]
-  (->> obj (find-protocol-impl prot) nil? not))
-
 (defn structure-path? [obj]
-  (or (fn? obj) (obj-extends? StructurePath obj)))
+  (or (fn? obj) (obj-extends? `p/StructurePath obj)))
 
 (extend-protocol CoerceTransformFunctions
   nil ; needs its own path because it doesn't count as an Object
@@ -130,30 +204,43 @@
   (coerce-path [this]
     this)
 
-  java.util.List
+  
+  #?(:clj java.util.List :cljs cljs.core/PersistentVector)
   (coerce-path [this]
     (comp-paths* this))
 
-  Object
+  #?@(:cljs [
+    cljs.core/IndexedSeq
+    (coerce-path [this]
+      (coerce-path (vec this)))
+    cljs.core/EmptyList
+    (coerce-path [this]
+      (coerce-path (vec this)))
+    cljs.core/List
+    (coerce-path [this]
+      (coerce-path (vec this)))
+    ])
+  
+  #?(:clj Object :cljs js/Object)
   (coerce-path [this]
     (cond (structure-path? this) (coerce-structure-path this)
-          (obj-extends? Collector this) (coerce-collector this)
-          (obj-extends? StructureValsPath this) (coerce-structure-vals-path this)
+          (obj-extends? `p/Collector this) (coerce-collector this)
+          (obj-extends? `p/StructureValsPath this) (coerce-structure-vals-path this)
           :else (throw-illegal (no-prot-error-str this))
       )))
 
 
 (defn extype [^TransformFunctions f]
-  (let [^ExecutorFunctions exs (.executors f)]
-    (.type exs)
+  (let [^ExecutorFunctions exs (field f 'executors)]
+    (field exs 'type)
     ))
 
 (defn- combine-same-types [[^TransformFunctions f & _ :as all]]
   (if (empty? all)
     (coerce-path nil)
-    (let [^ExecutorFunctions exs (.executors f)
+    (let [^ExecutorFunctions exs (field f 'executors)
 
-          t (.type exs)
+          t (field exs 'type)
 
           combiner
           (if (= t :svalspath)
@@ -171,16 +258,16 @@
       (reduce (fn [^TransformFunctions curr ^TransformFunctions next]
                 (->TransformFunctions
                  exs
-                 (combiner (.selector curr) (.selector next))
-                 (combiner (.transformer curr) (.transformer next))
+                 (combiner (field curr 'selector) (field next 'selector))
+                 (combiner (field curr 'transformer) (field next 'transformer))
                  ))
               all))))
 
 (defn coerce-structure-vals [^TransformFunctions tfns]
   (if (= (extype tfns) :svalspath)
     tfns
-    (let [selector (.selector tfns)
-          transformer (.transformer tfns)]
+    (let [selector (field tfns 'selector)
+          transformer (field tfns 'transformer)]
       (->TransformFunctions
         StructureValsPathExecutor
         (fn [vals structure next-fn]
@@ -189,14 +276,14 @@
           (transformer structure (fn [structure] (next-fn vals structure))))
         ))))
 
-(extend-protocol StructureValsPathComposer
+(extend-protocol p/StructureValsPathComposer
   nil
   (comp-paths* [sp]
     (coerce-path sp))
-  Object
+  #?(:clj Object :cljs js/Object)
   (comp-paths* [sp]
     (coerce-path sp))
-  java.util.List
+  #?(:clj java.util.List :cljs cljs.core/PersistentVector)
   (comp-paths* [structure-paths]
     (let [combined (->> structure-paths
                         (map coerce-path)
@@ -212,8 +299,8 @@
 
 (defn coerce-structure-vals-direct [this]
   (cond (structure-path? this) (coerce-structure-path-direct this)
-        (obj-extends? Collector this) (coerce-collector this)
-        (obj-extends? StructureValsPath this) (coerce-structure-vals-path this)
+        (obj-extends? `p/Collector this) (coerce-collector this)
+        (obj-extends? `p/StructureValsPath this) (coerce-structure-vals-path this)
         (instance? TransformFunctions this) (coerce-structure-vals this)
         :else (throw-illegal (no-prot-error-str this))
   ))
@@ -222,31 +309,32 @@
 ;;won't execute as fast. Useful for when select/transform are used without pre-compiled paths
 ;;(where cost of compiling dominates execution time)
 (defn comp-unoptimal [sp]
-  (if (instance? java.util.List sp)
+  (if (instance? #?(:clj java.util.List :cljs cljs.core/PersistentVector) sp)
     (->> sp
          (map coerce-structure-vals-direct)
          combine-same-types)
     (coerce-path sp)))
 
 ;; cell implementation idea taken from prismatic schema library
-(definterface PMutableCell
-  (get_cell ^Object [])
-  (set_cell [^Object x]))
+(defprotocol PMutableCell
+  #?(:clj (get_cell [cell]))
+  (set_cell [cell x]))
 
-(deftype MutableCell [^:volatile-mutable ^Object q]
+(deftype MutableCell [^:volatile-mutable q]
   PMutableCell
-  (get_cell [this] q)
+  #?(:clj (get_cell [cell] q))
   (set_cell [this x] (set! q x)))
 
-(defn mutable-cell ^PMutableCell
+(defn mutable-cell
   ([] (mutable-cell nil))
   ([init] (MutableCell. init)))
 
-(defn set-cell! [^PMutableCell cell val]
-  (.set_cell cell val))
+(defn set-cell! [cell val]
+  (set_cell cell val))
 
-(defn get-cell [^PMutableCell cell]
-  (.get_cell cell))
+(defn get-cell [cell]
+  #?(:clj (get_cell cell) :cljs (field cell 'q))
+  )
 
 (defn update-cell! [cell afn]
   (let [ret (afn (get-cell cell))]
@@ -267,12 +355,12 @@
   (append (butlast l) v))
 
 (extend-protocol SetExtremes
-  clojure.lang.PersistentVector
+  #?(:clj clojure.lang.PersistentVector :cljs cljs.core/PersistentVector)
   (set-first [v val]
     (assoc v 0 val))
   (set-last [v val]
     (assoc v (-> v count dec) val))
-  Object
+  #?(:clj Object :cljs js/Object)
   (set-first [l val]
     (set-first-list l val))
   (set-last [l val]
@@ -304,14 +392,14 @@
 
 (defn compiled-select*
   [^com.rpl.specter.impl.TransformFunctions tfns structure]
-  (let [^com.rpl.specter.impl.ExecutorFunctions ex (.executors tfns)]
-    ((.select-executor ex) (.selector tfns) structure)
+  (let [^com.rpl.specter.impl.ExecutorFunctions ex (field tfns 'executors)]
+    ((field ex 'select-executor) (field tfns 'selector) structure)
     ))
 
 (defn compiled-transform*
   [^com.rpl.specter.impl.TransformFunctions tfns transform-fn structure]
-  (let [^com.rpl.specter.impl.ExecutorFunctions ex (.executors tfns)]
-    ((.transform-executor ex) (.transformer tfns) transform-fn structure)
+  (let [^com.rpl.specter.impl.ExecutorFunctions ex (field tfns 'executors)]
+    ((field ex 'transform-executor) (field tfns 'transformer) transform-fn structure)
     ))
 
 (defn selected?*
@@ -355,7 +443,7 @@
 
 (deftype AllStructurePath [])
 
-(extend-protocol StructurePath
+(extend-protocol p/StructurePath
   AllStructurePath
   (select* [this structure next-fn]
     (into [] (r/mapcat next-fn structure)))
@@ -369,50 +457,50 @@
 
 (deftype ValCollect [])
 
-(extend-protocol Collector
+(extend-protocol p/Collector
   ValCollect
   (collect-val [this structure]
     structure))
 
 (deftype PosStructurePath [getter setter])
 
-(extend-protocol StructurePath
+(extend-protocol p/StructurePath
   PosStructurePath
   (select* [this structure next-fn]
     (if-not (empty? structure)
-      (next-fn ((.getter this) structure))))
+      (next-fn ((field this 'getter) structure))))
   (transform* [this structure next-fn]
     (if (empty? structure)
       structure
-      ((.setter this) structure (next-fn ((.getter this) structure))))))
+      ((field this 'setter) structure (next-fn ((field this 'getter) structure))))))
 
 (deftype WalkerStructurePath [afn])
 
-(extend-protocol StructurePath
+(extend-protocol p/StructurePath
   WalkerStructurePath
   (select* [^WalkerStructurePath this structure next-fn]
-    (walk-select (.afn this) next-fn structure))
+    (walk-select (field this 'afn) next-fn structure))
   (transform* [^WalkerStructurePath this structure next-fn]
-    (walk-until (.afn this) next-fn structure)))
+    (walk-until (field this 'afn) next-fn structure)))
 
 (deftype CodeWalkerStructurePath [afn])
 
-(extend-protocol StructurePath
+(extend-protocol p/StructurePath
   CodeWalkerStructurePath
   (select* [^CodeWalkerStructurePath this structure next-fn]
-    (walk-select (.afn this) next-fn structure))
+    (walk-select (field this 'afn) next-fn structure))
   (transform* [^CodeWalkerStructurePath this structure next-fn]
-    (codewalk-until (.afn this) next-fn structure)))
+    (codewalk-until (field this 'afn) next-fn structure)))
 
 
 (deftype FilterStructurePath [path])
 
-(extend-protocol StructurePath
+(extend-protocol p/StructurePath
   FilterStructurePath
   (select* [^FilterStructurePath this structure next-fn]
-    (->> structure (filter #(selected?* (.path this) %)) doall next-fn))
+    (->> structure (filter #(selected?* (field this 'path) %)) doall next-fn))
   (transform* [^FilterStructurePath this structure next-fn]
-    (let [[filtered ancestry] (filter+ancestry (.path this) structure)
+    (let [[filtered ancestry] (filter+ancestry (field this 'path) structure)
           ;; the vec is necessary so that we can get by index later
           ;; (can't get by index for cons'd lists)
           next (vec (next-fn filtered))]
@@ -423,33 +511,33 @@
 
 (deftype KeyPath [akey])
 
-(extend-protocol StructurePath
+(extend-protocol p/StructurePath
   KeyPath
   (select* [^KeyPath this structure next-fn]
-    (key-select (.akey this) structure next-fn))
+    (key-select (field this 'akey) structure next-fn))
   (transform* [^KeyPath this structure next-fn]
-    (key-transform (.akey this) structure next-fn)
+    (key-transform (field this 'akey) structure next-fn)
     ))
 
 (deftype SelectCollector [sel-fn selector])
 
-(extend-protocol Collector
+(extend-protocol p/Collector
   SelectCollector
   (collect-val [^SelectCollector this structure]
-    ((.sel-fn this) (.selector this) structure)))
+    ((field this 'sel-fn) (field this 'selector) structure)))
 
 (deftype SRangePath [start-fn end-fn])
 
-(extend-protocol StructurePath
+(extend-protocol p/StructurePath
   SRangePath
   (select* [^SRangePath this structure next-fn]
-    (let [start ((.start-fn this) structure)
-          end ((.end-fn this) structure)]
+    (let [start ((field this 'start-fn) structure)
+          end ((field this 'end-fn) structure)]
       (next-fn (-> structure vec (subvec start end)))
       ))
   (transform* [^SRangePath this structure next-fn]
-    (let [start ((.start-fn this) structure)
-          end ((.end-fn this) structure)
+    (let [start ((field this 'start-fn) structure)
+          end ((field this 'end-fn) structure)
           structurev (vec structure)
           newpart (next-fn (-> structurev (subvec start end)))
           res (concat (subvec structurev 0 start)
@@ -462,24 +550,24 @@
 
 (deftype ViewPath [view-fn])
 
-(extend-protocol StructurePath
+(extend-protocol p/StructurePath
   ViewPath
   (select* [^ViewPath this structure next-fn]
-    (->> structure ((.view-fn this)) next-fn))
+    (->> structure ((field this 'view-fn)) next-fn))
   (transform* [^ViewPath this structure next-fn]
-    (->> structure ((.view-fn this)) next-fn)
+    (->> structure ((field this 'view-fn)) next-fn)
     ))
 
 (deftype PutValCollector [val])
 
-(extend-protocol Collector
+(extend-protocol p/Collector
   PutValCollector
   (collect-val [^PutValCollector this structure]
-    (.val this)
+    (field this 'val)
     ))
 
 
-(extend-protocol StructurePath
+(extend-protocol p/StructurePath
   nil
   (select* [this structure next-fn]
     (next-fn structure))
@@ -501,25 +589,25 @@
        ))
 
 ;;TODO: test nothing matches case
-(extend-protocol StructurePath
+(extend-protocol p/StructurePath
   ConditionalPath
   (select* [this structure next-fn]
-    (if-let [selector (retrieve-selector (.cond-pairs this) structure)]
+    (if-let [selector (retrieve-selector (field this 'cond-pairs) structure)]
       (->> (compiled-select* selector structure)
            (mapcat next-fn)
            doall)))
   (transform* [this structure next-fn]
-    (if-let [selector (retrieve-selector (.cond-pairs this) structure)]
+    (if-let [selector (retrieve-selector (field this 'cond-pairs) structure)]
       (compiled-transform* selector next-fn structure)
       structure
       )))
 
 (deftype MultiPath [paths])
 
-(extend-protocol StructurePath
+(extend-protocol p/StructurePath
   MultiPath
   (select* [this structure next-fn]
-    (->> (.paths this)
+    (->> (field this 'paths)
          (mapcat #(compiled-select* % structure))
          (mapcat next-fn)
          doall
@@ -529,7 +617,7 @@
       (fn [structure selector]
         (compiled-transform* selector next-fn structure))
       structure
-      (.paths this))
+      (field this 'paths))
     ))
 
 (defn filter-select [afn structure next-fn]
diff --git a/src/clj/com/rpl/specter/protocols.clj b/src/com/rpl/specter/protocols.cljc
similarity index 100%
rename from src/clj/com/rpl/specter/protocols.clj
rename to src/com/rpl/specter/protocols.cljc
diff --git a/test/com/rpl/specter/cljs_test_helpers.clj b/test/com/rpl/specter/cljs_test_helpers.clj
new file mode 100644
index 0000000..0176219
--- /dev/null
+++ b/test/com/rpl/specter/cljs_test_helpers.clj
@@ -0,0 +1,13 @@
+(ns com.rpl.specter.cljs-test-helpers)
+
+;; it seems like gen/bind and gen/return are a monad (hence the names)
+(defmacro for-all+ [bindings & body]
+  (let [parts (partition 2 bindings)
+        vars (vec (map first parts))
+        genned (reduce
+                (fn [curr [v code]]
+                  `(cljs.test.check.generators/bind ~code (fn [~v] ~curr)))
+                `(cljs.test.check.generators/return ~vars)
+                (reverse parts))]
+    `(cljs.test.check.properties/for-all [~vars ~genned]
+                   ~@body )))
diff --git a/test/com/rpl/specter/cljs_test_runner.cljs b/test/com/rpl/specter/cljs_test_runner.cljs
new file mode 100644
index 0000000..122b3f6
--- /dev/null
+++ b/test/com/rpl/specter/cljs_test_runner.cljs
@@ -0,0 +1,5 @@
+(ns com.rpl.specter.cljs-test-runner
+  (:require [cljs.test :as test :refer-macros [run-tests]]
+            [com.rpl.specter.core-test]))
+
+(run-tests 'com.rpl.specter.core-test)
diff --git a/test/clj/com/rpl/specter/core_test.clj b/test/com/rpl/specter/core_test.cljc
similarity index 55%
rename from test/clj/com/rpl/specter/core_test.clj
rename to test/com/rpl/specter/core_test.cljc
index e50920b..6589d1c 100644
--- a/test/clj/com/rpl/specter/core_test.clj
+++ b/test/com/rpl/specter/core_test.cljc
@@ -1,19 +1,32 @@
 (ns com.rpl.specter.core-test
-  (:use [clojure.test]
-        [clojure.test.check.clojure-test]
-        [com.rpl specter]
-        [com.rpl.specter protocols]
-        [com.rpl.specter test-helpers])
-  (:require [clojure.test.check
-             [generators :as gen]
-             [properties :as prop]]
-            [clojure.test.check :as qc]))
+  #?(:cljs (:require-macros
+             [cljs.test :refer [is deftest]]
+             [cljs.test.check.cljs-test :refer [defspec]]
+             [com.rpl.specter.cljs-test-helpers :refer [for-all+]]))
+  (:use 
+    #?(:clj [clojure.test :only [deftest is]])
+    #?(:clj [clojure.test.check.clojure-test :only [defspec]])
+    #?(:clj [com.rpl.specter.test-helpers :only [for-all+]])
+        [com.rpl.specter.protocols :only [comp-paths*]])
+  (:require #?@(:clj [[clojure.test.check.generators :as gen]
+                      [clojure.test.check.properties :as prop]]
+                :cljs [[cljs.test.check :as tc]
+                       [cljs.test.check.generators :as gen]
+                       [cljs.test.check.properties :as prop :include-macros true]]
+                )
+            [com.rpl.specter :as s]))
 
 ;;TODO:
 ;; test walk, codewalk
 ;; test keypath
 ;; test comp-structure-paths
 
+
+(defn limit-size [n {gen :gen}]
+  (gen/->Generator
+   (fn [rnd _size]
+     (gen rnd (if (< _size n) _size n)))))
+
 (defn gen-map-with-keys [key-gen val-gen & keys]
   (gen/bind (gen/map key-gen val-gen)
             (fn [m]
@@ -25,10 +38,10 @@
 (defspec select-all-keyword-filter
   (for-all+
     [kw gen/keyword
-     v (gen/vector (max-size 5
+     v (gen/vector (limit-size 5
                      (gen-map-with-keys gen/keyword gen/int kw)))
      pred (gen/elements [odd? even?])]
-    (= (select [ALL kw pred] v)
+    (= (s/select [s/ALL kw pred] v)
        (->> v (map kw) (filter pred))
        )))
 
@@ -36,46 +49,46 @@
   (for-all+
    [v (gen/vector gen/int)
     pred (gen/elements [odd? even?])
-    pos (gen/elements [[FIRST first] [LAST last]])]
-   (= (select-one [(filterer pred) (first pos)] v)
+    pos (gen/elements [[s/FIRST first] [s/LAST last]])]
+   (= (s/select-one [(s/filterer pred) (first pos)] v)
       (->> v (filter pred) ((last pos)))
       )))
 
 (defspec select-all-on-map
   (for-all+
-    [m (max-size 5 (gen/map gen/keyword gen/int))]
-    (= (select [ALL LAST] m)
+    [m (limit-size 5 (gen/map gen/keyword gen/int))]
+    (= (s/select [s/ALL s/LAST] m)
        (for [[k v] m] v))
     ))
 
 (deftest select-one-test
-   (is (thrown? Exception (select-one [ALL even?] [1 2 3 4])))
-   (is (= 1 (select-one [ALL odd?] [2 4 1 6])))
+   (is (thrown? #?(:clj Exception :cljs js/Error) (s/select-one [s/ALL even?] [1 2 3 4])))
+   (is (= 1 (s/select-one [s/ALL odd?] [2 4 1 6])))
    )
 
 (deftest select-first-test
-  (is (= 7 (select-first [(filterer odd?) ALL #(> % 4)] [3 4 2 3 7 5 9 8])))
-  (is (nil? (select-first [ALL even?] [1 3 5 9])))
+  (is (= 7 (s/select-first [(s/filterer odd?) s/ALL #(> % 4)] [3 4 2 3 7 5 9 8])))
+  (is (nil? (s/select-first [s/ALL even?] [1 3 5 9])))
   )
 
 (defspec transform-all-on-map
   (for-all+
-    [m (max-size 5 (gen/map gen/keyword gen/int))]
-    (= (transform [ALL LAST] inc m)
+    [m (limit-size 5 (gen/map gen/keyword gen/int))]
+    (= (s/transform [s/ALL s/LAST] inc m)
        (into {} (for [[k v] m] [k (inc v)]))
        )))
 
 (defspec transform-all
   (for-all+
    [v (gen/vector gen/int)]
-   (let [v2 (transform [ALL] inc v)]
+   (let [v2 (s/transform [s/ALL] inc v)]
     (and (vector? v2) (= v2 (map inc v)))
     )))
 
 (defspec transform-all-list
   (for-all+
    [v (gen/list gen/int)]
-   (let [v2 (transform [ALL] inc v)]
+   (let [v2 (s/transform [s/ALL] inc v)]
      (and (seq? v2) (= v2 (map inc v)))
      )))
 
@@ -84,7 +97,7 @@
    [v (gen/vector gen/int)
     pred (gen/elements [odd? even?])
     action (gen/elements [inc dec])]
-   (let [v2 (transform [ALL pred] action v)]
+   (let [v2 (s/transform [s/ALL pred] action v)]
      (= v2 (map (fn [v] (if (pred v) (action v) v)) v))
      )))
 
@@ -92,7 +105,7 @@
   (for-all+
    [v (gen/not-empty (gen/vector gen/int))
     pred (gen/elements [inc dec])]
-   (let [v2 (transform [LAST] pred v)]
+   (let [v2 (s/transform [s/LAST] pred v)]
      (= v2 (concat (butlast v) [(pred (last v))]))
      )))
 
@@ -100,7 +113,7 @@
   (for-all+
    [v (gen/not-empty (gen/vector gen/int))
     pred (gen/elements [inc dec])]
-   (let [v2 (transform [FIRST] pred v)]
+   (let [v2 (s/transform [s/FIRST] pred v)]
      (= v2 (concat [(pred (first v))] (rest v) ))
      )))
 
@@ -109,8 +122,8 @@
    [v (gen/vector gen/int)
     pred (gen/elements [even? odd?])
     updater (gen/elements [inc dec])]
-   (let [v2 (transform [(filterer pred) ALL] updater v)
-         v3 (transform [ALL pred] updater v)]
+   (let [v2 (s/transform [(s/filterer pred) s/ALL] updater v)
+         v3 (s/transform [s/ALL pred] updater v)]
      (= v2 v3))
      ))
 
@@ -118,9 +131,9 @@
   (for-all+
     [kw1 gen/keyword
      kw2 gen/keyword
-     m (max-size 10 (gen-map-with-keys gen/keyword gen/int kw1 kw2))
+     m (limit-size 10 (gen-map-with-keys gen/keyword gen/int kw1 kw2))
      pred (gen/elements [odd? even?])]
-    (= (transform [(collect-one kw2) kw1 pred] + m)
+    (= (s/transform [(s/collect-one kw2) kw1 pred] + m)
        (if (pred (kw1 m))
           (assoc m kw1 (+ (kw1 m) (kw2 m)))
           m
@@ -137,7 +150,7 @@
   (for-all+
    [pred (gen/elements [odd? even?])
     v (gen/such-that #(some pred %) (gen/vector gen/int))]
-   (let [v2 (transform [(filterer pred) LAST] inc v)
+   (let [v2 (s/transform [(s/filterer pred) s/LAST] inc v)
          differing-elems (differing-elements v v2)]
      (and (= (count v2) (count v))
           (= (count differing-elems) 1)
@@ -147,15 +160,15 @@
 ;; max sizes prevent too much data from being generated and keeps test from taking forever
 (defspec transform-keyword
   (for-all+
-   [k1 (max-size 3 gen/keyword)
-    k2 (max-size 3 gen/keyword)
-    m1 (max-size 5
+   [k1 (limit-size 3 gen/keyword)
+    k2 (limit-size 3 gen/keyword)
+    m1 (limit-size 5
                  (gen-map-with-keys
                   gen/keyword
                   (gen-map-with-keys gen/keyword gen/int k2)
                   k1))
     pred (gen/elements [inc dec])]
-   (let [m2 (transform [k1 k2] pred m1)]
+   (let [m2 (s/transform [k1 k2] pred m1)]
      (= (assoc-in m1 [k1 k2] nil) (assoc-in m2 [k1 k2] nil))
      (= (pred (get-in m1 [k1 k2])) (get-in m2 [k1 k2]))
      )))
@@ -169,7 +182,7 @@
                         (map (fn [v] [v v]))
                         (apply concat))
           user-ret (if (empty? user-ret) nil user-ret)]
-      (= (replace-in [ALL even?] (fn [v] [(inc v) [v v]]) v)
+      (= (s/replace-in [s/ALL even?] (fn [v] [(inc v) [v v]]) v)
          [res user-ret]
          ))))
 
@@ -179,8 +192,8 @@
     (let [res (->> v (map (fn [v] (if (even? v) (inc v) v))))
           last-even (->> v (filter even?) last)
           user-ret (if last-even {:a last-even})]
-      (= (replace-in [ALL even?] (fn [v] [(inc v) v]) v :merge-fn (fn [curr new]
-                                                                      (assoc curr :a new)))
+      (= (s/replace-in [s/ALL even?] (fn [v] [(inc v) v]) v :merge-fn (fn [curr new]
+                                                                        (assoc curr :a new)))
          [res user-ret]
          ))))
 
@@ -188,8 +201,8 @@
   (for-all+
    [v (gen/vector gen/int)
     v2 (gen/vector gen/int)]
-   (let [b (setval START v2 v)
-         e (setval END v2 v)]
+   (let [b (s/setval s/BEGINNING v2 v)
+         e (s/setval s/END v2 v)]
      (and (= b (concat v2 v))
           (= e (concat v v2)))
      )))
@@ -204,30 +217,29 @@
          predcount (fn [pred v] (->> v (filter pred) count))
          even-count (partial predcount even?)
          odd-count (partial predcount odd?)
-         b (transform (srange b e) (fn [r] (filter odd? r)) v)]
+         b (s/transform (s/srange b e) (fn [r] (filter odd? r)) v)]
      (and (= (odd-count v) (odd-count b))
           (= (+ (even-count b) (even-count sv))
              (even-count v)))
      )))
 
 (deftest structure-path-directly-test
-  (is (= 3 (select-one :b {:a 1 :b 3})))
-  (is (= 5 (select-one (comp-paths :a :b) {:a {:b 5}})))
+  (is (= 3 (s/select-one :b {:a 1 :b 3})))
+  (is (= 5 (s/select-one (s/comp-paths :a :b) {:a {:b 5}})))
   )
 
 (defspec view-test
   (for-all+
     [i gen/int
      afn (gen/elements [inc dec])]
-    (= (first (select (view afn) i))
-       (first (select (viewfn [i] (afn i)) i))
+    (= (first (s/select (s/view afn) i))
        (afn i)
-       (transform (view afn) identity i)
+       (s/transform (s/view afn) identity i)
        )))
 
 (deftest selected?-test
   (is (= [[1 3 5] [2 :a] [7 11 4 2 :a] [10 1 :a] []]
-         (setval [ALL (selected? ALL even?) END]
+         (s/setval [s/ALL (s/selected? s/ALL even?) s/END]
                  [:a]
                  [[1 3 5] [2] [7 11 4 2] [10 1] []]
                  ))))
@@ -236,19 +248,19 @@
   (for-all+
     [i gen/int
      afn (gen/elements [inc dec])]
-    (and (= [i] (select nil i))
-         (= (afn i) (transform nil afn i)))))
+    (and (= [i] (s/select nil i))
+         (= (afn i) (s/transform nil afn i)))))
 
 (deftest nil-comp-test
-  (is (= [5] (select (comp-paths* nil) 5))))
+  (is (= [5] (s/select (comp-paths* nil) 5))))
 
 (defspec putval-test
   (for-all+
    [kw gen/keyword
-    m (max-size 10 (gen-map-with-keys gen/keyword gen/int kw))
+    m (limit-size 10 (gen-map-with-keys gen/keyword gen/int kw))
     c gen/int]
-   (= (transform [(putval c) kw] + m)
-      (transform [kw (putval c)] + m)
+   (= (s/transform [(s/putval c) kw] + m)
+      (s/transform [kw (s/putval c)] + m)
       (assoc m kw (+ c (get m kw)))
       )))
 
@@ -256,79 +268,79 @@
   (for-all+
    [v (gen/vector gen/int)]
    (= [v]
-      (select [] v)
-      (select nil v)
-      (select (comp-paths) v)
-      (select (comp-paths nil) v)
-      (select [nil nil nil] v)
+      (s/select [] v)
+      (s/select nil v)
+      (s/select (s/comp-paths) v)
+      (s/select (s/comp-paths nil) v)
+      (s/select [nil nil nil] v)
       )))
 
 (defspec empty-selector-transform-test
   (for-all+
    [kw gen/keyword
-    m (max-size 10 (gen-map-with-keys gen/keyword gen/int kw))]
+    m (limit-size 10 (gen-map-with-keys gen/keyword gen/int kw))]
    (and (= m
-           (transform nil identity m)
-           (transform [] identity m)
-           (transform (comp-paths []) identity m)
-           (transform (comp-paths nil nil) identity m)
+           (s/transform nil identity m)
+           (s/transform [] identity m)
+           (s/transform (s/comp-paths []) identity m)
+           (s/transform (s/comp-paths nil nil) identity m)
            )
-        (= (transform kw inc m)
-           (transform [nil kw] inc m)
-           (transform (comp-paths kw nil) inc m)
-           (transform (comp-paths nil kw nil) inc m)
+        (= (s/transform kw inc m)
+           (s/transform [nil kw] inc m)
+           (s/transform (s/comp-paths kw nil) inc m)
+           (s/transform (s/comp-paths nil kw nil) inc m)
            ))))
 
 (deftest compose-empty-comp-path-test
   (let [m {:a 1}]
     (is (= [1]
-           (select [:a (comp-paths)] m)
-           (select [(comp-paths) :a] m)
+           (s/select [:a (s/comp-paths)] m)
+           (s/select [(s/comp-paths) :a] m)
            ))))
 
 (defspec mixed-selector-test
   (for-all+
-   [k1 (max-size 3 gen/keyword)
-    k2 (max-size 3 gen/keyword)
-    m (max-size 5
+   [k1 (limit-size 3 gen/keyword)
+    k2 (limit-size 3 gen/keyword)
+    m (limit-size 5
                 (gen-map-with-keys
                  gen/keyword
                  (gen-map-with-keys gen/keyword gen/int k2)
                  k1))]
    (= [(-> m k1 k2)]
-      (select [k1 (comp-paths k2)] m)
-      (select [(comp-paths k1) k2] m)
-      (select [(comp-paths k1 k2) nil] m)
-      (select [(comp-paths) k1 k2] m)
-      (select [k1 (comp-paths) k2] m)
+      (s/select [k1 (s/comp-paths k2)] m)
+      (s/select [(s/comp-paths k1) k2] m)
+      (s/select [(s/comp-paths k1 k2) nil] m)
+      (s/select [(s/comp-paths) k1 k2] m)
+      (s/select [k1 (s/comp-paths) k2] m)
       )))
 
 (deftest cond-path-test
   (is (= [4 2 6 8 10]
-         (select [ALL (cond-path even? [(view inc) (view inc)]
-                                 #(= 3 %) (view dec))]
+         (s/select [s/ALL (s/cond-path even? [(s/view inc) (s/view inc)]
+                                 #(= 3 %) (s/view dec))]
                  [1 2 3 4 5 6 7 8])))
-  (is (empty? (select (if-path odd? (view inc)) 2)))
+  (is (empty? (s/select (s/if-path odd? (s/view inc)) 2)))
   (is (= [6 2 10 6 14] 
-         (transform [(putval 2)
-                  ALL
-                  (if-path odd? [(view inc) (view inc)] (view dec))]
+         (s/transform [(s/putval 2)
+                  s/ALL
+                  (s/if-path odd? [(s/view inc) (s/view inc)] (s/view dec))]
                   *
                   [1 2 3 4 5]
                      )))
   (is (= 2
-         (transform [(putval 2)
-                  (if-path odd? (view inc))]
+         (s/transform [(s/putval 2)
+                  (s/if-path odd? (s/view inc))]
                   *
                   2)))
   )
 
 (defspec cond-path-selector-test
   (for-all+
-   [k1 (max-size 3 gen/keyword)
-    k2 (max-size 3 gen/keyword)
-    k3 (max-size 3 gen/keyword)
-    m (max-size 5
+   [k1 (limit-size 3 gen/keyword)
+    k2 (limit-size 3 gen/keyword)
+    k3 (limit-size 3 gen/keyword)
+    m (limit-size 5
                 (gen-map-with-keys
                  gen/keyword
                  gen/int
@@ -340,34 +352,34 @@
    (let [v1 (get m k1)
          k (if (pred v1) k2 k3)]
      (and
-       (= (transform (if-path [k1 pred] k2 k3) inc m)
-          (transform k inc m)) 
-       (= (select (if-path [k1 pred] k2 k3) m)
-          (select k m)) 
+       (= (s/transform (s/if-path [k1 pred] k2 k3) inc m)
+          (s/transform k inc m)) 
+       (= (s/select (s/if-path [k1 pred] k2 k3) m)
+          (s/select k m)) 
        ))))
 
 (defspec multi-path-test
   (for-all+
-    [k1 (max-size 3 gen/keyword)
-    k2 (max-size 3 gen/keyword)
-    m (max-size 5
+    [k1 (limit-size 3 gen/keyword)
+    k2 (limit-size 3 gen/keyword)
+    m (limit-size 5
                 (gen-map-with-keys
                  gen/keyword
                  gen/int
                  k1
                  k2))
     ]
-    (= (transform (multi-path k1 k2) inc m)
+    (= (s/transform (s/multi-path k1 k2) inc m)
        (->> m
-            (transform k1 inc)
-            (transform k2 inc)))
+            (s/transform k1 inc)
+            (s/transform k2 inc)))
     ))
 
 (deftest empty-pos-transform
-  (is (empty? (select FIRST [])))
-  (is (empty? (select LAST [])))
-  (is (= [] (transform FIRST inc [])))
-  (is (= [] (transform LAST inc [])))
+  (is (empty? (s/select s/FIRST [])))
+  (is (empty? (s/select s/LAST [])))
+  (is (= [] (s/transform s/FIRST inc [])))
+  (is (= [] (s/transform s/LAST inc [])))
   )
 
 (defspec set-filter-test
@@ -376,10 +388,10 @@
      k2 (gen/such-that #(not= k1 %) gen/keyword)
      k3 (gen/such-that (complement #{k1 k2}) gen/keyword)
      v (gen/vector (gen/elements [k1 k2 k3]))]
-    (= (filter #{k1 k2} v) (select [ALL #{k1 k2}] v))
+    (= (filter #{k1 k2} v) (s/select [s/ALL #{k1 k2}] v))
     ))
 
 (deftest nil-select-one-test
-  (is (= nil (select-one! ALL [nil])))
-  (is (thrown? Exception (select-one! ALL [])))
-  )
\ No newline at end of file
+  (is (= nil (s/select-one! s/ALL [nil])))
+  (is (thrown? #?(:clj Exception :cljs js/Error) (s/select-one! s/ALL [])))
+  )
diff --git a/test/clj/com/rpl/specter/test_helpers.clj b/test/com/rpl/specter/test_helpers.clj
similarity index 56%
rename from test/clj/com/rpl/specter/test_helpers.clj
rename to test/com/rpl/specter/test_helpers.clj
index 2ee4ca7..e256026 100644
--- a/test/clj/com/rpl/specter/test_helpers.clj
+++ b/test/com/rpl/specter/test_helpers.clj
@@ -1,11 +1,8 @@
 (ns com.rpl.specter.test-helpers
-  (:use [clojure.test]
-        [clojure.test.check.clojure-test])
   (:require [clojure.test.check             
              [generators :as gen]
-             [properties :as prop]]
-            [clojure.test.check :as qc]
-            [clojure.pprint :as pp]))
+             [properties :as prop]]))
+
 
 ;; it seems like gen/bind and gen/return are a monad (hence the names)
 (defmacro for-all+ [bindings & body]
@@ -18,15 +15,3 @@
                 (reverse parts))]
     `(prop/for-all [~vars ~genned]
                    ~@body )))
-
-(defn max-size [n {gen :gen}]
-  (gen/make-gen
-   (fn [rnd _size]
-     (gen rnd (if (< _size n) _size n)))))
-
-
-(defn gen-tuple+ [& inputs]
-  (->> inputs
-       (map #(if (gen/generator? %) % (gen/return %)))
-       (apply gen/tuple)
-       ))