fix handle default values

frontend/src/lib/components/ArgInput.svelte

@@ -235,6 +235,8 @@
 
 	let rawValue: string | undefined = $state(undefined)
 
+	let lastValue: any = null
+
 	function computeDefaultValue(inputCat?: string, defaultValue?: any, nnullable?: boolean) {
 		let nvalue: any = null
 		if (label == 'toString' && typeof value == 'function') {
@@ -257,16 +259,14 @@
 			}
 		}
 
-		if (nnullable && type === 'string' && value === '' && nvalue != null) {
+		if (nnullable && type === 'string' && value === '' && nvalue == null) {
 			value = null
 		} else if (nvalue != null && !deepEqual(nvalue, value)) {
-			console.log('set value 2', label, nvalue, value)
 			value = nvalue
+			lastValue = value
 		}
 	}
 
-	let lastValue: any = $state(undefined)
-
 	// By setting isListJson to true, we can render inputs even if the value is not an array of the correct type
 	// This avoids the issue of the input being rendered as a string with value: [object Object], or as a number with value: NaN
 	function checkArrayValueType() {
@@ -353,7 +353,6 @@
 	}
 
 	onMount(() => {
-		computeDefaultValue()
 		evalValueToRaw()
 	})
 
@@ -457,7 +456,8 @@
 	$effect(() => {
 		oneOf && value && untrack(() => onOneOfChange())
 	})
-	$effect(() => {
+
+	$effect.pre(() => {
 		value
 		let args = [inputCat, defaultValue, nullable]
 
@@ -466,7 +466,7 @@
 			computeDefaultValue(...args)
 		})
 	})
-	$effect(() => {
+	$effect.pre(() => {
 		!isListJson &&
 			inputCat === 'list' &&
 			value != lastValue &&
@@ -474,10 +474,10 @@
 			!hasIsListJsonChanged &&
 			untrack(() => checkArrayValueType())
 	})
-	$effect(() => {
+	$effect.pre(() => {
 		defaultValue != undefined && untrack(() => handleDefaultValueChange())
 	})
-	$effect(() => {
+	$effect.pre(() => {
 		;(inputCat &&
 			(isObjectCat(inputCat) || isRawStringEditor(inputCat)) &&
 			!oneOf &&

frontend/src/lib/components/EditableSchemaForm.svelte

@@ -337,7 +337,6 @@
 							bind:schema={
 								() => (previewSchema ? previewSchema : schema),
 								(newSchema) => {
-									console.log('schemaChange set', $state.snapshot(newSchema))
 									schema = newSchema
 									tick().then(() => dispatch('change', schema))
 								}

frontend/src/lib/components/SchemaForm.svelte

@@ -114,12 +114,6 @@
 		actions
 	}: Props = $props()
 
-	$effect.pre(() => {
-		if (args == undefined) {
-			args = {}
-		}
-	})
-
 	const dispatch = createEventDispatcher()
 
 	let inputCheck: { [id: string]: boolean } = $state({})
@@ -222,27 +216,32 @@
 		}
 	}
 
-	$effect(() => {
+	$effect.pre(() => {
 		if (args == undefined || typeof args !== 'object') {
 			args = {}
 		}
 	})
-	$effect(() => {
-		const newKeys = Array.isArray(schema?.order)
-			? schema?.order
-			: Object.keys(schema?.properties ?? {})
+	$effect.pre(() => {
+		const newKeys = [
+			...new Set(
+				(Array.isArray(schema?.order)
+					? schema?.order
+					: Object.keys(schema?.properties ?? {})) as string[]
+			)
+		]
+
 		if (!deepEqual(keys, newKeys)) {
 			keys = newKeys
 		}
 	})
-	$effect(() => {
+	$effect.pre(() => {
 		schema && (untrack(() => reorder()), (hidden = {}))
 	})
-	$effect(() => {
+	$effect.pre(() => {
 		;[schema, args]
 		untrack(() => handleHiddenFields(schema, args ?? {}))
 	})
-	$effect(() => {
+	$effect.pre(() => {
 		isValid = allTrue(inputCheck ?? {})
 	})
 	const actions_render = $derived(actions)

frontend/src/lib/components/schema/EditableSchemaDrawer.svelte

@@ -61,14 +61,16 @@
 	let schemaString: string = $state(JSON.stringify(schema, null, '\t'))
 	let editor: SimpleEditor | undefined = $state(undefined)
 	let error: string | undefined = $state(undefined)
-	let items = $derived(
-		((schema?.order ?? Object.keys(schema?.properties ?? {}))?.map((item, index) => {
-			return { value: item, id: item }
-		}) ?? []) as Array<{
-			value: string
-			id: string
-		}>
-	)
+	let items = $derived([
+		...new Set(
+			(schema?.order ?? Object.keys(schema?.properties ?? {}))?.map((item, index) => {
+				return { value: item, id: item }
+			}) ?? []
+		)
+	]) as Array<{
+		value: string
+		id: string
+	}>
 </script>
 
 <div class="flex flex-col items-end mb-2 w-full">
@@ -163,7 +165,7 @@
 								<Label label="Nested properties">
 									<EditableSchemaDrawer
 										on:change={() => {
-											schema = schema
+											schema = $state.snapshot(schema)
 											dispatch('change', schema)
 										}}
 										bind:schema={schema.properties[item.value]}

frontend/src/lib/components/schema/SchemaFormDND.svelte

@@ -97,6 +97,7 @@
 <!-- {JSON.stringify(items)} -->
 <!-- svelte-ignore a11y_no_static_element_interactions -->
 <!-- svelte-ignore a11y_no_noninteractive_tabindex -->
+
 <SchemaForm
 	{nestedClasses}
 	{hiddenArgs}