Simple item list diff.

Say you have a saved list of items and you fetch a fresh list of items. Use this library to compare and get lists of created, updated, deleted items.

API

createFeedInfo(items)

Returns { items: [{ id: 'abc', revision: 'f3295...'}], revision: 'aw3bc123' }

• Adds revision property on every item.
• Calculates revision of all items.

checkFeed(saved, fresh)

saved needs to have items in the form of an object keyed by id.

getTouchedIds(checkFeedResult)

Creates a single array that combines created, updated, deleted. That order may change in the future. Each value in the array looks like { id: ID, action: ACTION }.

checkFeedGetTouched(saved, fresh)

Same as checkFeed but includes touchedIds field.