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This commit is contained in:
idlewinn 2020-03-09 23:37:42 -07:00
parent 1419f17175
commit a0669f874e
2 changed files with 12 additions and 0 deletions
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6
src/components/App.tsx
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@ -263,9 +263,14 @@ export class App extends React.Component<any, AppState> {
sceneAppState || getDefaultAppState(),
{ scrollToContent: true },
);
// Perform reconciliation - in collaboration, if we encounter
// elements with more staler versions than ours, ignore them
// and keep ours.
if (elements == null || elements.length === 0) {
elements = restoredState.elements;
} else {
// create a map of ids so we don't have to iterate
// over the array more than once.
const elementMap = elements.reduce(
(
acc: { [key: string]: ExcalidrawElement },
@ -276,6 +281,7 @@ export class App extends React.Component<any, AppState> {
},
{},
);
// Reconcile
elements = restoredState.elements.map(element => {
if (
elementMap.hasOwnProperty(element.id) &&