3 files changed, 86 insertions, 0 deletions
diff --git a/editor/j/dune b/editor/j/dune
new file mode 100755
index 0000000..56e6691
--- /dev/null
+++ b/editor/j/dune
@@ -0,0 +1,7 @@
+(library
+ (name j)
+ (libraries 
+   brr
+   js_of_ocaml
+   )
+ )
diff --git a/editor/j/j.ml b/editor/j/j.ml
new file mode 100755
index 0000000..96b22e0
--- /dev/null
+++ b/editor/j/j.ml
@@ -0,0 +1,47 @@
+type ('a, 'b) prop = Jv.prop'
+
+let prop
+  : string -> ('a, 'b) prop
+  = Jstr.of_string
+
+let get
+  : 'a -> ('a, 'b) prop -> 'b option
+  = fun obj prop ->
+    Jv.get' (Jv.Id.to_jv obj) prop
+    |> Jv.to_option Jv.Id.of_jv
+
+let set
+  : 'a -> ('a, 'b) prop -> 'b -> unit
+  = fun obj prop value ->
+    Jv.set'
+      (Jv.Id.to_jv obj)
+      prop
+      (Jv.Id.to_jv value)
+
+(* Objects *)
+
+type 'a constr = (Jstr.t * Jv.t)
+
+let c
+  : ('a, 'b) prop -> 'b -> 'a constr
+  = fun prop v ->
+    (prop, Jv.Id.to_jv v)
+
+let obj
+  : 'a constr Array.t -> 'a
+  = fun props ->
+    Jv.Id.of_jv @@ Jv.obj' props
+
+(* Arrays *)
+
+type 'a array = Jv.t
+
+let to_array
+  : 'a array -> 'a Array.t
+  = fun arr ->
+    Jv.to_array Jv.Id.of_jv arr
+
+let of_array
+  : 'a Array.t -> 'a array
+  = fun arr ->
+    Jv.of_array Jv.Id.to_jv arr
diff --git a/editor/j/j.mli b/editor/j/j.mli
new file mode 100755
index 0000000..796bb9d
--- /dev/null
+++ b/editor/j/j.mli
@@ -0,0 +1,32 @@
+(** The type properties *)
+type ('a, 'b) prop
+
+val prop
+  : string -> ('a, 'b) prop
+
+val get
+  : 'a -> ('a, 'b) prop -> 'b option
+
+val set
+  : 'a -> ('a, 'b) prop -> 'b -> unit
+
+
+(* Arrays *)
+
+type 'a array
+
+val to_array
+  : 'a array -> 'a Array.t
+
+val of_array
+  : 'a Array.t -> 'a array
+
+(* Object constructor *)
+
+type 'a constr
+
+val c
+  : ('a, 'b) prop -> 'b -> 'a constr
+
+val obj
+  : 'a constr Array.t -> 'a