From d1da5348dda324191c49b1841d068683f3ac2c86 Mon Sep 17 00:00:00 2001
From: Boten Anna <eirikb@eirikb.no>
Date: Sun, 10 Jan 2021 13:00:27 +0000
Subject: [PATCH] Automatic!

---
 data/pathifier.ts    |  1 -
 data/transformers.ts | 15 ++++++++++-----
 domdom/dd-props.ts   |  9 +++++++--
 3 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/data/pathifier.ts b/data/pathifier.ts
index 6c9a9e8..162bb23 100644
--- a/data/pathifier.ts
+++ b/data/pathifier.ts
@@ -84,7 +84,6 @@ export class Pathifier {
     transformer.next = this._transformer;
     const lastTransformer = this.lastTransformer();
     lastTransformer.next = transformer;
-    transformer.parent = lastTransformer;
   }
 
   map<T = any>(map: Mapper<T>): Pathifier {
diff --git a/data/transformers.ts b/data/transformers.ts
index 3ff9e4c..f124555 100644
--- a/data/transformers.ts
+++ b/data/transformers.ts
@@ -76,7 +76,6 @@ export class Entries {
 }
 
 export interface Transformer {
-  parent?: Transformer;
   entries: Entries;
   next?: Transformer;
   onValue?: any;
@@ -94,7 +93,6 @@ export interface Transformer {
 }
 
 export abstract class BaseTransformer implements Transformer {
-  parent?: Transformer;
   entries = new Entries();
   next?: Transformer;
   onOpts?: ListenerCallbackOptions;
@@ -155,7 +153,7 @@ export class MapTransformer extends BaseTransformer {
   }
 
   remove(index: number, entry: Entry): void {
-    this.entries.remove(entry);
+    this.entries.remove(entry, index);
     this.next?.remove(index, entry);
   }
 
@@ -333,6 +331,7 @@ export class SliceTransformer extends BaseTransformer {
 
 export class FilterTransformer extends BaseTransformer {
   private readonly filter: OnFilter;
+  private readonly all: Entries = new Entries();
 
   constructor(filter: OnFilter) {
     super();
@@ -341,7 +340,7 @@ export class FilterTransformer extends BaseTransformer {
 
   private _findIndex(key: string): number {
     let index = 0;
-    const entries = this.parent?.entries;
+    const entries = this.all;
     if (entries) {
       for (let i = 0; i < entries.length; i++) {
         if (entries.get(i).key === key || index >= this.entries.length) {
@@ -356,6 +355,8 @@ export class FilterTransformer extends BaseTransformer {
   }
 
   add(index: number, entry: Entry): void {
+    this.all.add(entry, index);
+
     if (
       this.filter(entry.value, {
         opts: entry.opts,
@@ -370,6 +371,8 @@ export class FilterTransformer extends BaseTransformer {
   }
 
   remove(index: number, entry: Entry): void {
+    this.all.remove(entry, index);
+
     index = this.entries.remove(entry);
     if (index >= 0) {
       this.next?.remove(index, entry);
@@ -380,7 +383,7 @@ export class FilterTransformer extends BaseTransformer {
     this.onValue = value;
     this.onOpts = opts;
     let index = 0;
-    this.parent?.entries.forEach(entry => {
+    this.all.forEach(entry => {
       const test = this.filter(entry.value, {
         opts: entry.opts,
         onValue: this.onValue,
@@ -400,6 +403,8 @@ export class FilterTransformer extends BaseTransformer {
   }
 
   update(_oldIndex: number, _index: number, entry: Entry): void {
+    this.all.replace(entry, _index, _oldIndex);
+
     const test = this.filter(entry.value, {
       opts: entry.opts,
       onValue: this.onValue,
diff --git a/domdom/dd-props.ts b/domdom/dd-props.ts
index 999a6f5..2e2c64c 100644
--- a/domdom/dd-props.ts
+++ b/domdom/dd-props.ts
@@ -1,6 +1,7 @@
 import { Domode, Mountable } from './types.ts';
 import { BaseTransformer, Data } from '../data/index.ts';
 import { DomPathifier } from './pathifier.ts';
+import { isProbablyPlainObject } from './dom-stower.ts';
 
 function setAttribute(element: HTMLElement, key: string, value: any) {
   if (value === null) value = '';
@@ -10,8 +11,12 @@ function setAttribute(element: HTMLElement, key: string, value: any) {
   if (key.startsWith('data-')) {
     const dataKey = key.split('-')[1];
     element.dataset[dataKey] = value;
-  } else if (typeof value === 'object') {
-    Object.assign(element[key], value);
+  } else if (isProbablyPlainObject(value)) {
+    if (!element[key]) {
+      element[key] = value;
+    } else {
+      Object.assign(element[key], value);
+    }
   } else {
     if (typeof value === 'boolean' || typeof value === 'undefined') {
       if (value) {