Bug: WatchEffect is overriding the previous function

[otaxhu]

So I tried the next code (minimal representation) and got an unexpected behaviour:

main.go:

package main

import (
	"bufio"
	"fmt"
	"os"

	"github.com/nasan016/gofer"
)

func main() {

	count1 := gofer.Ref(0)
	count2 := gofer.Ref(0)

	gofer.WatchEffect(func() {
		// Operations that I want to execute only if count1 changes
		fmt.Println("count1 = ", count1.GetValue())
	})

	// BUG: This function overrides the previous function
	gofer.WatchEffect(func() {
		// Operations that I want to execute only if count2 changes
		fmt.Println("count2 = ", count2.GetValue())
	})

	scanner := bufio.NewScanner(os.Stdin)
	fmt.Print(">>> ")
	for scanner.Scan() {
		text := scanner.Text()
		if text == "increment count1" {
			count1.SetValue(count1.GetValue() + 2)
		}
		if text == "increment count2" {
			count2.SetValue(count2.GetValue() + 3)
		}
		fmt.Print("\n>>>")
	}
}

What I expected:

I thought that WatchEffect tracks the Refs, but this is not the case, even if I set Ref's value that are not supposed to be tracked by the effect (because this are not inside of the effect), the WatchEffect function is executed anyways. Something like this:

func main() {
	countNotInEffect := gofer.Ref(0)
	gofer.WatchEffect(func () {
		fmt.Println("executing effect")
	})
	// The effect is executed anyways
	countNotInEffect.SetValue(countNotInEffect.GetValue() + 1)
}

Suggested solution:

See vue's watch function, note that takes in an array of reactive dependencies, suggested function signature to mimic the vue's: Watch[T any](deps []*gofer.RefImpl[T], effectFunc func())