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// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
exports[`repairing bindings > should strip arrow binding if repair throws 1`] = `
{
"angle": 0,
"backgroundColor": "transparent",
"boundElements": [],
"created": 1,
"customData": undefined,
"elbowed": false,
"endArrowhead": null,
"endBinding": null,
"fillStyle": "solid",
"frameId": null,
"groupIds": [],
"height": 100,
"id": "id-arrow01",
"index": "a0",
"isDeleted": false,
"link": null,
"locked": false,
"opacity": 100,
"points": [
[
0,
0,
],
[
100,
100,
],
],
"roughness": 1,
"roundness": null,
"seed": Any<Number>,
"startArrowhead": null,
"startBinding": null,
"strokeColor": "#1e1e1e",
"strokeStyle": "solid",
"strokeWidth": 2,
"type": "arrow",
"updated": 1,
"version": 2,
"versionNonce": Any<Number>,
"width": 100,
"x": 0,
"y": 0,
}
`;
exports[`restoreElements > should restore arrow element correctly 1`] = `
{
"angle": 0,
"backgroundColor": "transparent",
"boundElements": [],
"created": 1,
"customData": undefined,
"elbowed": false,
"endArrowhead": null,
"endBinding": null,
"fillStyle": "solid",
"frameId": null,
"groupIds": [],
"height": 100,
"id": "id-arrow01",
"index": "a0",
"isDeleted": false,
"link": null,
"locked": false,
"opacity": 100,
"points": [
[
0,
0,
],
[
100,
100,
],
],
"roughness": 1,
"roundness": null,
"seed": Any<Number>,
"startArrowhead": null,
"startBinding": null,
"strokeColor": "#1e1e1e",
"strokeStyle": "solid",
"strokeWidth": 2,
"type": "arrow",
"updated": 1,
"version": 2,
"versionNonce": Any<Number>,
"width": 100,
"x": 0,
"y": 0,
}
`;
exports[`restoreElements > should restore correctly with rectangle, ellipse and diamond elements 1`] = `
{
"angle": 0,
"backgroundColor": "blue",
"boundElements": [],
"created": 1,
"customData": undefined,
"fillStyle": "cross-hatch",
"frameId": null,
"groupIds": [
"1",
"2",
"3",
],
"height": 200,
"id": "1",
"index": "a0",
"isDeleted": false,
"link": null,
"locked": false,
"opacity": 10,
"roughness": 2,
"roundness": {
"type": 3,
},
"seed": Any<Number>,
"strokeColor": "red",
"strokeStyle": "dashed",
"strokeWidth": 2,
"type": "rectangle",
"updated": 1,
"version": 2,
"versionNonce": Any<Number>,
"width": 100,
"x": 10,
"y": 20,
}
`;
exports[`restoreElements > should restore correctly with rectangle, ellipse and diamond elements 2`] = `
{
"angle": 0,
"backgroundColor": "blue",
"boundElements": [],
"created": 1,
"customData": undefined,
"fillStyle": "cross-hatch",
"frameId": null,
"groupIds": [
"1",
"2",
"3",
],
"height": 200,
"id": "2",
"index": "a1",
"isDeleted": false,
"link": null,
"locked": false,
"opacity": 10,
"roughness": 2,
"roundness": {
"type": 2,
},
"seed": Any<Number>,
"strokeColor": "red",
"strokeStyle": "dashed",
"strokeWidth": 2,
"type": "ellipse",
"updated": 1,
"version": 2,
"versionNonce": Any<Number>,
"width": 100,
"x": 10,
"y": 20,
}
`;
exports[`restoreElements > should restore correctly with rectangle, ellipse and diamond elements 3`] = `
{
"angle": 0,
"backgroundColor": "blue",
"boundElements": [],
"created": 1,
"customData": undefined,
"fillStyle": "cross-hatch",
"frameId": null,
"groupIds": [
"1",
"2",
"3",
],
"height": 200,
"id": "3",
"index": "a2",
"isDeleted": false,
"link": null,
"locked": false,
"opacity": 10,
"roughness": 2,
"roundness": {
"type": 2,
},
"seed": Any<Number>,
"strokeColor": "red",
"strokeStyle": "dashed",
"strokeWidth": 2,
"type": "diamond",
"updated": 1,
"version": 2,
"versionNonce": Any<Number>,
"width": 100,
"x": 10,
"y": 20,
}
`;
exports[`restoreElements > should restore freedraw element correctly 1`] = `
{
"angle": 0,
"backgroundColor": "transparent",
"boundElements": [],
"created": 1,
"customData": undefined,
"fillStyle": "solid",
"frameId": null,
"groupIds": [],
"height": 100,
"id": "id-freedraw01",
"index": "a0",
"isDeleted": false,
"link": null,
"locked": false,
"opacity": 100,
"points": [
[
0,
0,
],
[
10,
10,
],
],
"pressures": [],
"roughness": 1,
"roundness": null,
"seed": Any<Number>,
"simulatePressure": true,
"strokeColor": "#1e1e1e",
"strokeOptions": {
"streamline": "0.50000",
"variability": "variable",
},
"strokeStyle": "solid",
"strokeWidth": 1,
"type": "freedraw",
"updated": 1,
"version": 2,
"versionNonce": Any<Number>,
"width": 100,
"x": 0,
"y": 0,
}
`;
exports[`restoreElements > should restore line and draw elements correctly 1`] = `
{
"angle": 0,
"backgroundColor": "transparent",
"boundElements": [],
"created": 1,
"customData": undefined,
"endArrowhead": null,
"endBinding": null,
"fillStyle": "solid",
"frameId": null,
"groupIds": [],
"height": 100,
"id": "id-line01",
"index": "a0",
"isDeleted": false,
"link": null,
"locked": false,
"opacity": 100,
"points": [
[
0,
0,
],
[
100,
100,
],
],
"polygon": false,
"roughness": 1,
"roundness": null,
"seed": Any<Number>,
"startArrowhead": null,
"startBinding": null,
"strokeColor": "#1e1e1e",
"strokeStyle": "solid",
"strokeWidth": 2,
"type": "line",
"updated": 1,
"version": 2,
"versionNonce": Any<Number>,
"width": 100,
"x": 0,
"y": 0,
}
`;
exports[`restoreElements > should restore line and draw elements correctly 2`] = `
{
"angle": 0,
"backgroundColor": "transparent",
"boundElements": [],
"created": 1,
"customData": undefined,
"endArrowhead": null,
"endBinding": null,
"fillStyle": "solid",
"frameId": null,
"groupIds": [],
"height": 100,
"id": "id-draw01",
"index": "a1",
"isDeleted": false,
"link": null,
"locked": false,
"opacity": 100,
"points": [
[
0,
0,
],
[
100,
100,
],
],
"polygon": false,
"roughness": 1,
"roundness": null,
"seed": Any<Number>,
"startArrowhead": null,
"startBinding": null,
"strokeColor": "#1e1e1e",
"strokeStyle": "solid",
"strokeWidth": 2,
"type": "line",
"updated": 1,
"version": 2,
"versionNonce": Any<Number>,
"width": 100,
"x": 0,
"y": 0,
}
`;
exports[`restoreElements > should restore text element correctly passing value for each attribute 1`] = `
{
"angle": 0,
"autoResize": true,
"backgroundColor": "transparent",
"baseFontSize": null,
"boundElements": [],
"containerId": null,
"created": 1,
"customData": undefined,
"fillStyle": "solid",
"fontFamily": 1,
"fontSize": 14,
"frameId": null,
"groupIds": [],
"height": 100,
"id": "id-text01",
"index": "a0",
"isDeleted": false,
"labelPosition": null,
"lineHeight": "1.25000",
"link": null,
"locked": false,
"opacity": 100,
"originalText": "text",
"roughness": 1,
"roundness": null,
"seed": Any<Number>,
"strokeColor": "#1e1e1e",
"strokeStyle": "solid",
"strokeWidth": 2,
"text": "text",
"textAlign": "center",
"type": "text",
"updated": 1,
"version": 2,
"versionNonce": Any<Number>,
"verticalAlign": "middle",
"width": 100,
"x": -20,
"y": "-8.75000",
}
`;
exports[`restoreElements > should restore text element correctly with unknown font family, null text and undefined alignment 1`] = `
{
"angle": 0,
"autoResize": true,
"backgroundColor": "transparent",
"baseFontSize": null,
"boundElements": [],
"containerId": null,
"created": 1,
"customData": undefined,
"fillStyle": "solid",
"font": "10 unknown",
"fontFamily": 5,
"fontSize": 10,
"frameId": null,
"groupIds": [],
"height": 100,
"id": "id-text01",
"index": "a0",
"isDeleted": true,
"labelPosition": null,
"lineHeight": "1.25000",
"link": null,
"locked": false,
"opacity": 100,
"originalText": "",
"roughness": 1,
"roundness": null,
"seed": Any<Number>,
"strokeColor": "#1e1e1e",
"strokeStyle": "solid",
"strokeWidth": 2,
"text": "",
"textAlign": "left",
"type": "text",
"updated": 1,
"version": 3,
"versionNonce": Any<Number>,
"verticalAlign": "top",
"width": 100,
"x": 0,
"y": 0,
}
`;

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import { syncInvalidIndices } from "@excalidraw/element";
import { randomInteger, cloneJSON } from "@excalidraw/common";
import type {
ExcalidrawElement,
OrderedExcalidrawElement,
} from "@excalidraw/element/types";
import { reconcileElements } from "../../data/reconcile";
import type { RemoteExcalidrawElement } from "../../data/reconcile";
import type { AppState } from "../../types";
type Id = string;
type ElementLike = {
id: string;
version: number;
versionNonce: number;
index: string;
};
type Cache = Record<string, ExcalidrawElement | undefined>;
const createElement = (opts: { uid: string } | ElementLike) => {
let uid: string;
let id: string;
let version: number | null;
let versionNonce: number | null = null;
if ("uid" in opts) {
const match = opts.uid.match(/^(\w+)(?::(\d+))?$/)!;
id = match[1];
version = match[2] ? parseInt(match[2]) : null;
uid = version ? `${id}:${version}` : id;
} else {
({ id, version, versionNonce } = opts);
uid = id;
}
return {
uid,
id,
version,
versionNonce: versionNonce || randomInteger(),
};
};
const idsToElements = (ids: (Id | ElementLike)[], cache: Cache = {}) => {
return syncInvalidIndices(
ids.reduce((acc, _uid) => {
const { uid, id, version, versionNonce } = createElement(
typeof _uid === "string" ? { uid: _uid } : _uid,
);
const cached = cache[uid];
const elem = {
id,
version: version ?? 0,
versionNonce,
...cached,
} as ExcalidrawElement;
// @ts-ignore
cache[uid] = elem;
acc.push(elem);
return acc;
}, [] as ExcalidrawElement[]),
);
};
const test = <U extends `${string}:${"L" | "R"}`>(
local: (Id | ElementLike)[],
remote: (Id | ElementLike)[],
target: U[],
) => {
const cache: Cache = {};
const _local = idsToElements(local, cache);
const _remote = idsToElements(remote, cache);
const reconciled = reconcileElements(
cloneJSON(_local),
cloneJSON(_remote) as RemoteExcalidrawElement[],
{} as AppState,
);
const reconciledIds = reconciled.map((x) => x.id);
const reconciledIndices = reconciled.map((x) => x.index);
expect(target.length).toEqual(reconciled.length);
expect(reconciledIndices.length).toEqual(
new Set([...reconciledIndices]).size,
); // expect no duplicated indices
assert.deepEqual(
reconciledIds,
target.map((uid) => {
const [, id, source] = uid.match(/^(\w+):([LR])$/)!;
const element = (source === "L" ? _local : _remote).find(
(e) => e.id === id,
)!;
return element.id;
}),
"remote reconciliation",
);
// convergent reconciliation on the remote client
try {
assert.deepEqual(
reconcileElements(
cloneJSON(_remote),
cloneJSON(_local as RemoteExcalidrawElement[]),
{} as AppState,
).map((x) => x.id),
reconciledIds,
"convergent reconciliation",
);
} catch (error: any) {
console.error("local original", _remote);
console.error("remote original", _local);
throw error;
}
// bidirectional re-reconciliation on remote client
try {
assert.deepEqual(
reconcileElements(
cloneJSON(_remote),
cloneJSON(reconciled as unknown as RemoteExcalidrawElement[]),
{} as AppState,
).map((x) => x.id),
reconciledIds,
"local re-reconciliation",
);
} catch (error: any) {
console.error("local original", _remote);
console.error("remote reconciled", reconciled);
throw error;
}
};
describe("elements reconciliation", () => {
it("reconcileElements()", () => {
// -------------------------------------------------------------------------
//
// in following tests, we pass:
// (1) an array of local elements and their version (:1, :2...)
// (2) an array of remote elements and their version (:1, :2...)
// (3) expected reconciled elements
//
// in the reconciled array:
// :L means local element was resolved
// :R means remote element was resolved
//
// if versions are missing, it defaults to version 0
// -------------------------------------------------------------------------
test(["A:1", "B:1", "C:1"], ["B:2"], ["A:L", "B:R", "C:L"]);
test(["A:1", "B:1", "C"], ["B:2", "A:2"], ["B:R", "A:R", "C:L"]);
test(["A:2", "B:1", "C"], ["B:2", "A:1"], ["A:L", "B:R", "C:L"]);
test(["A:1", "C:1"], ["B:1"], ["A:L", "B:R", "C:L"]);
test(["A", "B"], ["A:1"], ["A:R", "B:L"]);
test(["A"], ["A", "B"], ["A:L", "B:R"]);
test(["A"], ["A:1", "B"], ["A:R", "B:R"]);
test(["A:2"], ["A:1", "B"], ["A:L", "B:R"]);
test(["A:2"], ["B", "A:1"], ["A:L", "B:R"]);
test(["A:1"], ["B", "A:2"], ["B:R", "A:R"]);
test(["A"], ["A:1"], ["A:R"]);
test(["A", "B:1", "D"], ["B", "C:2", "A"], ["C:R", "A:R", "B:L", "D:L"]);
// some of the following tests are kinda arbitrary and they're less
// likely to happen in real-world cases
test(["A", "B"], ["B:1", "A:1"], ["B:R", "A:R"]);
test(["A:2", "B:2"], ["B:1", "A:1"], ["A:L", "B:L"]);
test(["A", "B", "C"], ["A", "B:2", "G", "C"], ["A:L", "B:R", "G:R", "C:L"]);
test(["A", "B", "C"], ["A", "B:2", "G"], ["A:R", "B:R", "C:L", "G:R"]);
test(
["A:2", "B:2", "C"],
["D", "B:1", "A:3"],
["D:R", "B:L", "A:R", "C:L"],
);
test(
["A:2", "B:2", "C"],
["D", "B:2", "A:3", "C"],
["D:R", "B:L", "A:R", "C:L"],
);
test(
["A", "B", "C", "D", "E", "F"],
["A", "B:2", "X", "E:2", "F", "Y"],
["A:L", "B:R", "X:R", "C:L", "E:R", "D:L", "F:L", "Y:R"],
);
// fractional elements (previously annotated)
test(
["A", "B", "C"],
["A", "B", "X", "Y", "Z"],
["A:R", "B:R", "C:L", "X:R", "Y:R", "Z:R"],
);
test(["A"], ["X", "Y"], ["A:L", "X:R", "Y:R"]);
test(["A"], ["X", "Y", "Z"], ["A:L", "X:R", "Y:R", "Z:R"]);
test(["A", "B"], ["C", "D", "F"], ["A:L", "C:R", "B:L", "D:R", "F:R"]);
test(
["A", "B", "C", "D"],
["C:1", "B", "D:1"],
["A:L", "C:R", "B:L", "D:R"],
);
test(
["A", "B", "C"],
["X", "A", "Y", "B", "Z"],
["X:R", "A:R", "Y:R", "B:L", "C:L", "Z:R"],
);
test(
["B", "A", "C"],
["X", "A", "Y", "B", "Z"],
["X:R", "A:R", "C:L", "Y:R", "B:R", "Z:R"],
);
test(["A", "B"], ["A", "X", "Y"], ["A:R", "B:L", "X:R", "Y:R"]);
test(
["A", "B", "C", "D", "E"],
["A", "X", "C", "Y", "D", "Z"],
["A:R", "B:L", "X:R", "C:R", "Y:R", "D:R", "E:L", "Z:R"],
);
test(
["X", "Y", "Z"],
["A", "B", "C"],
["A:R", "X:L", "B:R", "Y:L", "C:R", "Z:L"],
);
test(
["X", "Y", "Z"],
["A", "B", "C", "X", "D", "Y", "Z"],
["A:R", "B:R", "C:R", "X:L", "D:R", "Y:L", "Z:L"],
);
test(
["A", "B", "C", "D", "E"],
["C", "X", "A", "Y", "D", "E:1"],
["B:L", "C:L", "X:R", "A:R", "Y:R", "D:R", "E:R"],
);
test(
["C:1", "B", "D:1"],
["A", "B", "C:1", "D:1"],
["A:R", "B:R", "C:R", "D:R"],
);
test(
["C:1", "B", "D:1"],
["A", "B", "C:2", "D:1"],
["A:R", "B:L", "C:R", "D:L"],
);
test(
["A", "B", "C", "D"],
["A", "C:1", "B", "D:1"],
["A:L", "C:R", "B:L", "D:R"],
);
test(
["A", "B", "C", "D"],
["C", "X", "B", "Y", "A", "Z"],
["C:R", "D:L", "X:R", "B:R", "Y:R", "A:R", "Z:R"],
);
test(
["A", "B", "C", "D"],
["A", "B:1", "C:1"],
["A:R", "B:R", "C:R", "D:L"],
);
test(
["A", "B", "C", "D"],
["A", "C:1", "B:1"],
["A:R", "C:R", "B:R", "D:L"],
);
test(
["A", "B", "C", "D"],
["A", "C:1", "B", "D:1"],
["A:R", "C:R", "B:R", "D:R"],
);
test(["A:1", "B:1", "C"], ["B:2"], ["A:L", "B:R", "C:L"]);
test(["A:1", "B:1", "C"], ["B:2", "C:2"], ["A:L", "B:R", "C:R"]);
test(["A", "B"], ["A", "C", "B", "D"], ["A:R", "C:R", "B:R", "D:R"]);
test(["A", "B"], ["B", "C", "D"], ["A:L", "B:R", "C:R", "D:R"]);
test(["A", "B"], ["C", "D"], ["A:L", "C:R", "B:L", "D:R"]);
test(["A", "B"], ["A", "B:1"], ["A:L", "B:R"]);
test(["A:2", "B"], ["A", "B:1"], ["A:L", "B:R"]);
test(["A:2", "B:2"], ["B:1"], ["A:L", "B:L"]);
test(["A:2", "B:2"], ["B:1", "C"], ["A:L", "B:L", "C:R"]);
test(["A:2", "B:2"], ["A", "C", "B:1"], ["A:L", "B:L", "C:R"]);
// concurrent convergency
test(["A", "B", "C"], ["A", "B", "D"], ["A:R", "B:R", "C:L", "D:R"]);
test(["A", "B", "E"], ["A", "B", "D"], ["A:R", "B:R", "D:R", "E:L"]);
test(
["A", "B", "C"],
["A", "B", "D", "E"],
["A:R", "B:R", "C:L", "D:R", "E:R"],
);
test(
["A", "B", "E"],
["A", "B", "D", "C"],
["A:R", "B:R", "D:R", "E:L", "C:R"],
);
test(["A", "B"], ["B", "D"], ["A:L", "B:R", "D:R"]);
test(["C", "A", "B"], ["C", "B", "D"], ["C:R", "A:L", "B:R", "D:R"]);
});
it("test identical elements reconciliation", () => {
const testIdentical = (
local: ElementLike[],
remote: ElementLike[],
expected: Id[],
) => {
const ret = reconcileElements(
local as unknown as OrderedExcalidrawElement[],
remote as unknown as RemoteExcalidrawElement[],
{} as AppState,
);
if (new Set(ret.map((x) => x.id)).size !== ret.length) {
throw new Error("reconcileElements: duplicate elements found");
}
assert.deepEqual(
ret.map((x) => x.id),
expected,
);
};
// identical id/version/versionNonce/index
// -------------------------------------------------------------------------
testIdentical(
[{ id: "A", version: 1, versionNonce: 1, index: "a0" }],
[{ id: "A", version: 1, versionNonce: 1, index: "a0" }],
["A"],
);
testIdentical(
[
{ id: "A", version: 1, versionNonce: 1, index: "a0" },
{ id: "B", version: 1, versionNonce: 1, index: "a0" },
],
[
{ id: "B", version: 1, versionNonce: 1, index: "a0" },
{ id: "A", version: 1, versionNonce: 1, index: "a0" },
],
["A", "B"],
);
// actually identical (arrays and element objects)
// -------------------------------------------------------------------------
const elements1 = [
{
id: "A",
version: 1,
versionNonce: 1,
index: "a0",
},
{
id: "B",
version: 1,
versionNonce: 1,
index: "a0",
},
];
testIdentical(elements1, elements1, ["A", "B"]);
testIdentical(elements1, elements1.slice(), ["A", "B"]);
testIdentical(elements1.slice(), elements1, ["A", "B"]);
testIdentical(elements1.slice(), elements1.slice(), ["A", "B"]);
const el1 = {
id: "A",
version: 1,
versionNonce: 1,
index: "a0",
};
const el2 = {
id: "B",
version: 1,
versionNonce: 1,
index: "a0",
};
testIdentical([el1, el2], [el2, el1], ["A", "B"]);
});
});

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