Open
Description
Reproduction case:
main.inc.js:
$global.p = new Promise((resolve, reject) => {
setTimeout(() => {
resolve("foo");
}, 300);
});main.go:
package main
import (
"fmt"
"github.com/gopherjs/gopherjs/js"
)
func main() {
p := js.Global.Get("p")
p.Call("then", func(r *js.Object) {
defer func() {
fmt.Println("deferred")
}()
}).Call("catch", func(e *js.Object) {
})
}When I execute this code, I get the following output:
deferred
/home/jonhall/src/test/test.js:1737
r();
^
TypeError: r is not a function
at $runScheduled (/home/jonhall/src/test/test.js:1737:13)
at $schedule (/home/jonhall/src/test/test.js:1761:9)
at queueEntry (/home/jonhall/src/test/test.js:1834:9)
at $send (/home/jonhall/src/test/test.js:1793:9)
at $b (/home/jonhall/src/test/test.js:15011:9)
at $b (/home/jonhall/src/test/test.js:14318:9)
at /home/jonhall/src/test/test.js:68:74
at FSReqCallback.wrapper [as oncomplete] (node:fs:816:5)
Hypothesis: The rule that blocking code in a callback must be executed in a goroutine should apply to deferred functions within callbacks as well. If I move the fmt.Println call to a goroutine within the deferred function, the error goes away.