clash-and-dashboard/src/lib/helper.ts

// eslint-disable-next-line @typescript-eslint/no-empty-function
export function noop () {}

export function partition<T> (arr: T[], fn: (arg: T) => boolean): [T[], T[]] {
    const left: T[] = []
    const right: T[] = []
    for (const item of arr) {
        fn(item) ? left.push(item) : right.push(item)
    }
    return [left, right]
}

export function formatTraffic (num: number) {
    const s = ['B', 'KB', 'MB', 'GB', 'TB']
    let idx = 0
    while (~~(num / 1024) && idx < s.length) {
        num /= 1024
        idx++
    }

    return `${idx === 0 ? num : num.toFixed(2)} ${s[idx]}`
}