melt/dist/utils/array.js

The next generation of Melt UI. Built for Svelte 5.

export function findNext(array, condition) {
    const index = array.findIndex(condition);
    if (index === -1) {
        return undefined; // Condition not met
    }
    const nextIndex = (index + 1) % array.length; // Wrap around
    return array[nextIndex];
}
export function findPrev(array, condition) {
    const index = array.findIndex(condition);
    if (index === -1) {
        return undefined; // Condition not met
    }
    const prevIndex = (index - 1 + array.length) % array.length; // Wrap around
    return array[prevIndex];
}
// Map and filter, but using reduce under the hood, for implicit typing.
export function mapAndFilter(array, mapper, filter) {
    return array.reduce((acc, item) => {
        const mappedItem = mapper(item);
        if (filter(mappedItem))
            acc.push(mappedItem);
        return acc;
    }, []);
}