Calling a ".done" JS callback - clojurescript

Question

I'm having some trouble with wrapping a JS library because I can't get a .done callback to work correctly. In JavaScript the code would look like this:
db.values("inventory").done(function(item) {
console.log(item);
});
So I tried a couple (very dirty) ClojureScript methods to translate this:
(defn log []
(console/log "working?"))
(defn stock []
(#(.done % log) (.values db "inventory")))
and
(defn stock []
(js* "db.values('inventory').done(function(item) {
console.log(item);
})"))
but neither of these worked. The error message is always something like: db.values(...).done is not a function
Are there any protocol extensions (or anything else) that could be used here to cover the JS callback? Otherwise, can goog.async.Deferred somehow intercept the callback again?

Answer 1

maybe this helps you!
I've done from node but it must work from browser with a little details
First for the demo code I've prepared a mock js lib to simulate yours (my_api.js)
This is my_api.js
console.log("my_api.js");
var db={};
db.item="";
db.values=function(_string_){
db.item="loadign_"+_string_;
return this;
};
db.done=function(_fn_){
_fn_(db.item);
};
var api={hello:"ey ", db:db};
module.exports=api;
// your pretended chain calls
// db.values("inventory").done(function(item) {
// console.log(item);
// });
And from clojurescript code ...
(ns cljs-demo.hello)
(defn example_callback []
(let [my-api (js/require "./my_api") ; the api.js lib used for this example
db (aget my-api "db") ; this is your db object
my_fn (fn [item] ;this is your callback function
(println "printing from clojurescript" item)
)
]
(do
(-> db (.values "inventory") (.done my_fn)) ;; calling your js in a similar way you want in js
;; or
(.done (.values db "inventory_bis") my_fn) ;; calling nested form in the standar lisp manner
)
)
)
(set! *main-cli-fn* example_callback) ;default node function
And from console (node.js)
node your_output_node.js
And you'll obtain
printing from clojurescript loadign_inventory
printing from clojurescript loadign_inventory_bis
Good Luck,
Juan