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feat: fractional indexing (#7359)

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* Introducing fractional indices as part of `element.index`

* Ensuring invalid fractional indices are always synchronized with the array order

* Simplifying reconciliation based on the fractional indices

* Moving reconciliation inside the `@excalidraw/excalidraw` package

---------

Co-authored-by: Marcel Mraz <marcel@excalidraw.com>
Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>
This commit is contained in:
Ryan Di 2024-04-04 20:51:11 +08:00 • committed by GitHub
parent bbdcd30a73
commit 32df5502ae
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50 changed files with 3640 additions and 2047 deletions
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6
excalidraw-app/tests/collab.test.tsx
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@ -7,6 +7,8 @@ import {
import ExcalidrawApp from "../App";
import { API } from "../../packages/excalidraw/tests/helpers/api";
import { createUndoAction } from "../../packages/excalidraw/actions/actionHistory";
import { syncInvalidIndices } from "../../packages/excalidraw/fractionalIndex";
const { h } = window;
Object.defineProperty(window, "crypto", {
@ -61,14 +63,14 @@ describe("collaboration", () => {
await render(<ExcalidrawApp />);
// To update the scene with deleted elements before starting collab
updateSceneData({
elements: [
elements: syncInvalidIndices([
API.createElement({ type: "rectangle", id: "A" }),
API.createElement({
type: "rectangle",
id: "B",
isDeleted: true,
}),
],
]),
});
await waitFor(() => {
expect(h.elements).toEqual([