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drop stray benchmark script

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Horizontal42 2026-08-19 16:35:00 +03:00
parent 18d9c84805
commit 433039fbc8
1 changed files with 0 additions and 98 deletions
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98
benchmark.ts
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@ -1,98 +0,0 @@
class MockClassList {
classes: Set<string> = new Set();
add(cls: string) { this.classes.add(cls); }
remove(cls: string) { this.classes.delete(cls); }
}
class MockHTMLElement {
classList = new MockClassList();
dataset: any = {};
}
const N = 10000;
const ITEM_COUNT = 100;
function benchmarkOld() {
const cachedItems = Array.from({ length: ITEM_COUNT }, (_, i) => ({
el: new MockHTMLElement(),
top: i * 10,
bottom: i * 10 + 9
}));
cachedItems.forEach((item, i) => item.el.dataset.docId = String(i));
const data = { docs: Array.from({ length: ITEM_COUNT }, (_, i) => ({ id: String(i), pinned: false })) };
const doc = { pinned: false };
const el = cachedItems[0].el;
const start = performance.now();
for (let i = 0; i < N; i++) {
const clientY = (i % ITEM_COUNT) * 10 + 5; // simulate moving through all items
let over: MockHTMLElement | undefined;
for (const item of cachedItems) {
item.el.classList.remove("drag-over");
if (!over && item.el !== el) {
if (clientY >= item.top && clientY <= item.bottom) {
over = item.el;
}
}
}
if (over) {
const overDoc = data.docs.find((d) => d.id === over.dataset.docId);
if (overDoc && !!overDoc.pinned === !!doc.pinned) over.classList.add("drag-over");
}
}
return performance.now() - start;
}
function benchmarkNew() {
const cachedItems = Array.from({ length: ITEM_COUNT }, (_, i) => ({
el: new MockHTMLElement(),
top: i * 10,
bottom: i * 10 + 9
}));
cachedItems.forEach((item, i) => item.el.dataset.docId = String(i));
const data = { docs: Array.from({ length: ITEM_COUNT }, (_, i) => ({ id: String(i), pinned: false })) };
const doc = { pinned: false };
const el = cachedItems[0].el;
let prevOver: MockHTMLElement | undefined;
const start = performance.now();
for (let i = 0; i < N; i++) {
const clientY = (i % ITEM_COUNT) * 10 + 5; // simulate moving through all items
let over: MockHTMLElement | undefined;
for (const item of cachedItems) {
if (!over && item.el !== el) {
if (clientY >= item.top && clientY <= item.bottom) {
over = item.el;
}
}
}
let newOver: MockHTMLElement | undefined;
if (over) {
const overDoc = data.docs.find((d) => d.id === over.dataset.docId);
if (overDoc && !!overDoc.pinned === !!doc.pinned) {
newOver = over;
}
}
if (prevOver && prevOver !== newOver) {
prevOver.classList.remove("drag-over");
}
if (newOver && prevOver !== newOver) {
newOver.classList.add("drag-over");
}
prevOver = newOver;
}
return performance.now() - start;
}
const oldTime = benchmarkOld();
const newTime = benchmarkNew();
console.log(`Old Time: ${oldTime.toFixed(2)} ms`);
console.log(`New Time: ${newTime.toFixed(2)} ms`);
console.log(`Improvement: ${((oldTime - newTime) / oldTime * 100).toFixed(2)}%`);