shelving/util/item.js

Toolkit for using data in JavaScript.

/** Get the identifier from an item object. */
export function getIdentifier({ id }) {
    return id;
}
/** Get the identifiers from an iterable set item objects. */
export function* getIdentifiers(entities) {
    for (const { id } of entities)
        yield id;
}
/** Does a data object or data item object. */
export function hasIdentifier(item, id) {
    return item.id === id;
}
/** Merge an ID into a set of data to make an `ItemData` */
export function getItem(id, data) {
    return hasIdentifier(data, id) ? data : { ...data, id };
}