seems to kinda work, the userspace errors missing Html_types module

dune

@@ -4,8 +4,7 @@
 (executables
  (names cors_proxy)
  (libraries httpaf httpaf-lwt-unix base stdio fmt http-lwt-client)
- (modules cors_proxy)
-)
+ (modules cors_proxy))
 
 (library (name store)
  (libraries
@@ -17,7 +16,7 @@
   cohttp-lwt-jsoo
   mimic
  js_of_ocaml)
- (modules store)
+ (modules store gitkey)
  (preprocess
   (pps js_of_ocaml-ppx)))
 
@@ -29,6 +28,8 @@
   lwt js_of_ocaml-lwt
   ;; not used directly
   graphics
+  tyxml
+  tyxml.functor
   js_of_ocaml.deriving
   react reactiveData
   str dynlink
@@ -36,31 +37,38 @@
   higlo
   js_of_ocaml-lwt.graphics
   js_of_ocaml-ppx
+  js_of_ocaml-compiler.runtime
+  js_of_ocaml-compiler.dynlink
   uucp
-  httpaf)
+  httpaf
+  tyxml-ppx
+ tyxml-syntax)
  (flags
   (:standard -rectypes -warn-error -A))
  (link_flags
-  (:standard -linkall))
- (modes byte js)
+  (:standard -linkall -keep-docs -keep-locs ))
+ (modes js byte )
  (js_of_ocaml
   (link_flags (:standard))
   (build_runtime_flags
    (:standard
-   ;; +oplevel.js
+    +toplevel.js
     +dynlink.js
     --file
     %{dep:examples.ml}
     --file
     %{dep:test_dynlink.cmo}
     --file
-    %{dep:test_dynlink.js}))
+    %{dep:test_dynlink.js}
+))
+
   (flags
    (:standard
-     --toplevel
-    (:include effects_flags.sexp))))
+     --toplevel --linkall --target-env=browser 
+     (:include effects_flags.sexp)
+ )))
  (modules
-  oplevel toplevel ppx_support graphics_support colorize ocp_indent indent b64)
+  oplevel toplevel ppx_support graphics_support colorize ocp_indent indent b64 )
  (preprocess
   (pps js_of_ocaml-ppx)))
 
@@ -89,9 +97,11 @@
    -o
    %{targets}
    stdlib
+   graphics
    str
    dynlink
-   js_of_ocaml.graphics
+   js_of_ocaml-compiler.runtime
+   js_of_ocaml-lwt.graphics
    js_of_ocaml-ppx.as-lib
    js_of_ocaml.deriving
    lwt
@@ -139,15 +149,12 @@
    %{dep:test_dynlink.cmo}
    --file
    %{dep:test_dynlink.js}
-   --export
-   %{dep:export.txt}
-   --toplevel
-   --disable
-   shortvar
+    --toplevel
+    --linkall
    %{dep:oplevel.bc}
    -o
    %{targets})))
 
 (alias
  (name default)
- (deps oplevel.js oplevel.bc.js index.html))
+ (deps  oplevel.bc.js index.html))