69ee8fd96a
* Add commercial licence and update config files * Update license in headers * Revert "Update license in headers" This reverts commit 7ed7949485e88889a9ffc8075a9df1f8e936777e. * Update only spdx id * Remove LicenseRef- from package.json LicenseRef- no longer allowed in npm v3 package.json This fixes the warning in the logs and failing build check.
39 lines
1.3 KiB
TypeScript
39 lines
1.3 KiB
TypeScript
/*
|
|
Copyright 2024 New Vector Ltd.
|
|
Copyright 2021 The Matrix.org Foundation C.I.C.
|
|
|
|
SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
|
|
Please see LICENSE files in the repository root for full details.
|
|
*/
|
|
|
|
import { arrayDiff, Diff } from "./arrays";
|
|
|
|
/**
|
|
* Determines if two sets are different through a shallow comparison.
|
|
* @param a The first set. Must be defined.
|
|
* @param b The second set. Must be defined.
|
|
* @returns True if they are different, false otherwise.
|
|
*/
|
|
export function setHasDiff<T>(a: Set<T>, b: Set<T>): boolean {
|
|
if (a.size === b.size) {
|
|
// When the lengths are equal, check to see if either set is missing an element from the other.
|
|
if (Array.from(b).some((i) => !a.has(i))) return true;
|
|
if (Array.from(a).some((i) => !b.has(i))) return true;
|
|
|
|
// if all the keys are common, say so
|
|
return false;
|
|
} else {
|
|
return true; // different lengths means they are naturally diverged
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Determines the values added and removed between two sets.
|
|
* @param a The first set. Must be defined.
|
|
* @param b The second set. Must be defined.
|
|
* @returns The difference between the values in each set.
|
|
*/
|
|
export function setDiff<T>(a: Set<T>, b: Set<T>): Diff<T> {
|
|
return arrayDiff(Array.from(a), Array.from(b));
|
|
}
|