yippee.fun
Precise DOM morphing
morphing
typescript
dom
Use specific operations for better performance
joel.drapper.me
+9
-1
benchmark/index.html
+9
-1
benchmark/index.html
···
383
383
import morphdom from "https://unpkg.com/morphdom@2.7.7/dist/morphdom-esm.js"
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// Try loading nanomorph from jsdelivr with ESM
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import nanomorph from "https://cdn.jsdelivr.net/npm/nanomorph@5.4.3/+esm"
386
-
// Alpine morph requires Alpine.js to be loaded, so we'll skip it
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+
// Load Alpine.js and Alpine morph
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import Alpine from "https://cdn.jsdelivr.net/npm/alpinejs@3.x.x/dist/module.esm.js"
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import Morph from "https://cdn.jsdelivr.net/npm/@alpinejs/morph@3.x.x/dist/module.esm.js"
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+
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// Initialize Alpine with morph plugin
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Alpine.plugin(Morph)
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window.Alpine = Alpine
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Alpine.start()
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const sandbox = document.getElementById("sandbox")
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let isRunning = false
···
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{ name: "idiomorph", fn: (from, to) => Idiomorph.morph(from, to) },
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{ name: "morphdom", fn: (from, to) => morphdom(from, to.cloneNode(true)) },
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{ name: "nanomorph", fn: (from, to) => nanomorph(from, to.cloneNode(true)) },
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{ name: "alpine-morph", fn: (from, to) => Alpine.morph(from, to) },
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]
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for (const lib of libraries) {
+62
-27
src/morphlex.ts
+62
-27
src/morphlex.ts
···
3
3
const TEXT_NODE_TYPE = 3
4
4
const PARENT_NODE_TYPES = [false, true, false, false, false, false, false, false, false, true, false, true]
5
5
6
+
const Operation = {
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+
EqualNode: 0,
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SameElement: 1,
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SameNode: 2,
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} as const
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+
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type Operation = (typeof Operation)[keyof typeof Operation]
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+
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const candidateNodes: Set<number> = new Set()
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const candidateElements: Set<number> = new Set()
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16
const unmatchedNodes: Set<number> = new Set()
···
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330
if (from === to) return
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if (from.isEqualNode?.(to)) return
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-
if (!(this.#options.beforeNodeVisited?.(from, to) ?? true)) return
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-
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if (from.nodeType === ELEMENT_NODE_TYPE && to.nodeType === ELEMENT_NODE_TYPE) {
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if ((from as Element).localName === (to as Element).localName) {
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this.#morphMatchingElements(from as Element, to as Element)
···
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} else {
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this.#morphOtherNode(from, to)
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}
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-
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this.#options.afterNodeVisited?.(from, to)
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}
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#morphMatchingElements(from: Element, to: Element): void {
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+
if (!(this.#options.beforeNodeVisited?.(from, to) ?? true)) return
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+
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if (from.hasAttributes() || to.hasAttributes()) {
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this.#visitAttributes(from, to)
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}
···
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} else if (from.hasChildNodes() || to.hasChildNodes()) {
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this.visitChildNodes(from, to)
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}
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+
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this.#options.afterNodeVisited?.(from, to)
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}
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#morphNonMatchingElements(from: Element, to: Element): void {
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+
if (!(this.#options.beforeNodeVisited?.(from, to) ?? true)) return
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+
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this.#replaceNode(from, to)
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+
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this.#options.afterNodeVisited?.(from, to)
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}
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#morphOtherNode(from: ChildNode, to: ChildNode): void {
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+
if (!(this.#options.beforeNodeVisited?.(from, to) ?? true)) return
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+
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if (from.nodeType === to.nodeType && from.nodeValue !== null && to.nodeValue !== null) {
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from.nodeValue = to.nodeValue
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} else {
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this.#replaceNode(from, to)
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}
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+
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this.#options.afterNodeVisited?.(from, to)
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}
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#visitAttributes(from: Element, to: Element): void {
···
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unmatchedElements.clear()
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whitespaceNodes.clear()
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-
const seq: Array<number | undefined> = []
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-
const matches: Array<number | undefined> = []
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+
const seq: Array<number> = []
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const matches: Array<number> = []
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const op: Array<Operation> = []
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for (let i = 0; i < fromChildNodes.length; i++) {
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const candidate = fromChildNodes[i]!
···
492
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if (candidate.isEqualNode(element)) {
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matches[unmatchedIndex] = candidateIndex
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+
op[unmatchedIndex] = Operation.EqualNode
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seq[candidateIndex] = unmatchedIndex
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candidateElements.delete(candidateIndex)
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unmatchedElements.delete(unmatchedIndex)
···
512
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candidateLoop: for (const candidateIndex of candidateElements) {
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const candidate = fromChildNodes[candidateIndex] as Element
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-
// Match by exact id
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if (id !== "" && element.localName === candidate.localName && id === candidate.id) {
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matches[unmatchedIndex] = candidateIndex
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seq[candidateIndex] = unmatchedIndex
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candidateElements.delete(candidateIndex)
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unmatchedElements.delete(unmatchedIndex)
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-
break candidateLoop
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-
}
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+
if (element.localName === candidate.localName) {
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+
// Match by exact id
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+
if (id !== "" && id === candidate.id) {
536
+
matches[unmatchedIndex] = candidateIndex
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+
op[unmatchedIndex] = Operation.SameElement
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+
seq[candidateIndex] = unmatchedIndex
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+
candidateElements.delete(candidateIndex)
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+
unmatchedElements.delete(unmatchedIndex)
541
+
break candidateLoop
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+
}
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-
// Match by idArray (to) against idSet (from)
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if (idArray) {
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const candidateIdSet = this.#idSetMap.get(candidate)
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if (candidateIdSet) {
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for (let i = 0; i < idArray.length; i++) {
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const arrayId = idArray[i]!
530
-
if (candidateIdSet.has(arrayId)) {
531
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matches[unmatchedIndex] = candidateIndex
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-
seq[candidateIndex] = unmatchedIndex
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-
candidateElements.delete(candidateIndex)
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-
unmatchedElements.delete(unmatchedIndex)
535
-
break candidateLoop
544
+
// Match by idArray (to) against idSet (from)
545
+
if (idArray) {
546
+
const candidateIdSet = this.#idSetMap.get(candidate)
547
+
if (candidateIdSet) {
548
+
for (let i = 0; i < idArray.length; i++) {
549
+
const arrayId = idArray[i]!
550
+
if (candidateIdSet.has(arrayId)) {
551
+
matches[unmatchedIndex] = candidateIndex
552
+
op[unmatchedIndex] = Operation.SameElement
553
+
seq[candidateIndex] = unmatchedIndex
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+
candidateElements.delete(candidateIndex)
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+
unmatchedElements.delete(unmatchedIndex)
556
+
break candidateLoop
557
+
}
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}
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}
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}
···
558
580
) {
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matches[unmatchedIndex] = candidateIndex
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seq[candidateIndex] = unmatchedIndex
583
+
op[unmatchedIndex] = Operation.SameElement
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candidateElements.delete(candidateIndex)
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unmatchedElements.delete(unmatchedIndex)
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break
···
580
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}
581
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matches[unmatchedIndex] = candidateIndex
582
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seq[candidateIndex] = unmatchedIndex
606
+
op[unmatchedIndex] = Operation.SameElement
583
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candidateElements.delete(candidateIndex)
584
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unmatchedElements.delete(unmatchedIndex)
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break
···
595
619
const candidate = fromChildNodes[candidateIndex]!
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if (candidate.isEqualNode(node)) {
597
621
matches[unmatchedIndex] = candidateIndex
622
+
op[unmatchedIndex] = Operation.EqualNode
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623
seq[candidateIndex] = unmatchedIndex
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candidateNodes.delete(candidateIndex)
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unmatchedNodes.delete(unmatchedIndex)
···
613
638
const candidate = fromChildNodes[candidateIndex]!
614
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if (nodeType === candidate.nodeType) {
615
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matches[unmatchedIndex] = candidateIndex
641
+
op[unmatchedIndex] = Operation.SameNode
616
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seq[candidateIndex] = unmatchedIndex
617
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candidateNodes.delete(candidateIndex)
618
644
unmatchedNodes.delete(unmatchedIndex)
···
641
667
const matchInd = matches[i]
642
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if (matchInd !== undefined) {
643
669
const match = fromChildNodes[matchInd]!
670
+
const operation = op[matchInd]!
644
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if (!shouldNotMove[matchInd]) {
646
673
moveBefore(parent, match, insertionPoint)
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}
648
-
this.#morphOneToOne(match, node)
675
+
676
+
if (operation === Operation.EqualNode) {
677
+
} else if (operation === Operation.SameElement) {
678
+
// this.#morphMatchingElements(match as Element, node as Element)
679
+
this.#morphMatchingElements(match as Element, node as Element)
680
+
} else {
681
+
this.#morphOneToOne(match, node)
682
+
}
683
+
649
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insertionPoint = match.nextSibling
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} else {
651
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if (this.#options.beforeNodeAdded?.(parent, node, insertionPoint) ?? true) {