bug fix,variable watcher does not update when watchable list is empty

Author: amir1376

build.gradle.kts

@@ -19,7 +19,7 @@ val projectTargetSdk by ext(33)
 
 allprojects {
     group = "ir.amirab.debugboard"
-    version = "0.3.0"
+    version = "0.3.1"
     repositories {
         google()
         mavenCentral()

core/core/src/main/kotlin/ir/amirab/debugboard/core/plugin/watcher/VarWatcher.kt

@@ -3,7 +3,7 @@ package ir.amirab.debugboard.core.plugin.watcher
 import kotlinx.coroutines.flow.*
 
 
-class VariableWatcher:IVariableWatcher {
+class VariableWatcher : IVariableWatcher {
     override val watchables: MutableStateFlow<List<Watchable<*>>> = MutableStateFlow(emptyList<Watchable<*>>())
 
     override fun addWatch(watchable: Watchable<*>) {
@@ -24,7 +24,11 @@ class VariableWatcher:IVariableWatcher {
         val names = p.map {
             it.name
         }
-        val x = combine(
+        //combine function does not emit when [flows] variable is empty! we manually emit an empty list instead
+        if (flows.isEmpty()) {
+            return flowOf(emptyList())
+        }
+        return combine(
             flows = flows
         ) {
             it.zip(names).map { pair: Pair<Any?, String> ->
@@ -34,8 +38,6 @@ class VariableWatcher:IVariableWatcher {
                 )
             }
         }
-
-        return x
     }